Leuthold Core Investment Fund | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Core Investment Fund | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Investment Objective | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Core Investment Fund seeks capital appreciation and income (or “total return”) in amounts attainable by assuming only prudent investment risk over the long term. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Fund Fees and Expenses | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Shareholder Fees (fees paid directly from your investment) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Example | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of these periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Although your actual costs may be higher or lower, based on these assumptions your costs would be: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Portfolio Turnover | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 52.36% of the average value of its portfolio. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Principal Investment Strategies of the Fund | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
The Fund is a “flexible” fund, meaning that it allocates its investments among:
in proportions which reflect the judgment of Leuthold Weeden Capital Management (referred to as the Adviser) of the potential returns and risks of each asset class. The Adviser considers a number of factors when making these allocations, including economic conditions and monetary factors, inflation and interest rate levels and trends, investor confidence, and technical stock market measures.
The Fund expects that normally:
The Fund’s investments in common stocks and other equity securities may consist of:
In investing in equity securities and debt securities, the Fund uses a disciplined, unemotional, quantitative investment approach that is based on the belief investors can achieve superior investment performance through group selection (Select Industries Strategy).
Pursuant to the Select Industries Strategy, the Adviser believes that as shifts among industry groups in the equity market have become more dramatic, group selection has become as important as individual stock selection in determining investment performance. The Adviser considers a group to be a collection of stocks whose investment performance tends to be similarly influenced by a variety of factors. The Adviser currently monitors about 110 groups. The major types of groups the Adviser monitors as part of the Select Industries Strategy are Industry Specific Groups comprised of narrower themes. Examples include “Airlines,” “Health Care Facilities” or “Semiconductors”.
The Adviser continuously updates its investment discipline and adjusts the Fund’s portfolio as necessary to keep the Fund invested in stocks in those groups which the Adviser believes are the most attractive. Such adjustments usually results in high portfolio turnover.
The Fund may invest in U.S. and some foreign (developed and emerging) government-related securities, including those issued by sovereign and local governments and their sponsored entities, U.S. and some foreign corporate securities, and securitized debts. The Funds may invest in both above and below investment grade securities or mutual funds and exchange-traded funds that invest in these securities.
The Fund may engage in short sales of index-related and other equity securities to reduce its equity exposure or to profit from an anticipated decline in the price of the security sold short.
The Fund’s investments are allocated among common stocks, corporate bonds, government bonds, real estate investment trusts, commodities (including both physical commodities and commodity-based exchange-traded funds), and cash equivalents. Portfolio weightings in these asset classes are driven by models that (1) determine the relative appeal of each asset class in relation to the others, and (2) the return potential of each asset class on an absolute, or stand-alone, basis. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Principal Risks of Investing in the Fund | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Investors in the Fund may lose money. The principal risks of investing in the Fund, including the risks to which the Fund’s portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund’s performance, are summarized below.
As a result, the Fund is a suitable investment only for those investors who have medium to long-term investment goals. Prospective investors who are uncomfortable with an investment that may decrease in value should not invest in the Fund. The Adviser does not intend the Fund to be a fixed, balanced investment program. Rather, the Fund is intended to be a flexible core investment suitable for long-term investors. Long-term investors may wish to supplement an investment in the Fund with other investments to satisfy their short-term financial needs and to diversify their exposure to various markets and asset classes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Performance Information | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund. The bar chart shows the performance of the Fund’s Retail Class shares, and performance of the Fund’s Institutional Class shares will differ from those shown to the extent that the classes of shares do not have the same expenses or inception date. Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future. Updated performance information is available on the Fund’s website, www.leutholdfunds.com. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Core Investment Fund Total Return of the Retail Shares (per calendar year) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Note: During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 16.10% (quarter ended September 30, 2009) and the lowest total return for a quarter was -14.71% (quarter ended December 31, 2008). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Total Returns (for the periods ended December 31, 2017) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The inception date for Institutional Shares is January 31, 2006.
We use the Lipper Flexible Portfolio Funds Index, the Morningstar Tactical Allocation Index, and Bloomberg Barclays Global Aggregate Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares.
One of the Fund’s additional indices has changed. Previously, the Fund used the Barclays U.S. Aggregate Index, but now the Fund uses the Bloomberg Barclays Global Aggregate Index, because the new index better reflects both the underlying holdings of the Fund and the investible stock universe for the Fund. The average annual total returns of the Barclays U.S. Aggregate Index for the one-year, five-year and ten-year periods ended December 31, 2017 were 3.54%,2.10%and 4.01%,respectively. |
Label | Element | Value | |||||||||||||||||||||||||||||||||||||||||||||||||
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Leuthold Core Investment Fund | |||||||||||||||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||||||||||||||
Risk/Return [Heading] | rr_RiskReturnHeading | Leuthold Core Investment Fund |
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Objective [Heading] | rr_ObjectiveHeading | Investment Objective |
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Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | Leuthold Core Investment Fund seeks capital appreciation and income (or “total return”) in amounts attainable by assuming only prudent investment risk over the long term. |
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Expense [Heading] | rr_ExpenseHeading | Fund Fees and Expenses |
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Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. |
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Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder Fees (fees paid directly from your investment) |
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Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) |
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Portfolio Turnover [Heading] | rr_PortfolioTurnoverHeading | Portfolio Turnover |
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Portfolio Turnover [Text Block] | rr_PortfolioTurnoverTextBlock | The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 52.36% of the average value of its portfolio. |
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Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 52.36% | |||||||||||||||||||||||||||||||||||||||||||||||||
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] | rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees | Acquired Fund Fees and Expenses are not directly borne by the Fund, and they are not reflected in the Fund’s financial statements, with the result that the information presented in the expense table may differ from that presented in the financial highlights. |
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Expense Example [Heading] | rr_ExpenseExampleHeading | Example |
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Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of these periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. |
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Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Although your actual costs may be higher or lower, based on these assumptions your costs would be: |
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Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies of the Fund |
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Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | The Fund is a “flexible” fund, meaning that it allocates its investments among:
in proportions which reflect the judgment of Leuthold Weeden Capital Management (referred to as the Adviser) of the potential returns and risks of each asset class. The Adviser considers a number of factors when making these allocations, including economic conditions and monetary factors, inflation and interest rate levels and trends, investor confidence, and technical stock market measures.
The Fund expects that normally:
The Fund’s investments in common stocks and other equity securities may consist of:
In investing in equity securities and debt securities, the Fund uses a disciplined, unemotional, quantitative investment approach that is based on the belief investors can achieve superior investment performance through group selection (Select Industries Strategy).
Pursuant to the Select Industries Strategy, the Adviser believes that as shifts among industry groups in the equity market have become more dramatic, group selection has become as important as individual stock selection in determining investment performance. The Adviser considers a group to be a collection of stocks whose investment performance tends to be similarly influenced by a variety of factors. The Adviser currently monitors about 110 groups. The major types of groups the Adviser monitors as part of the Select Industries Strategy are Industry Specific Groups comprised of narrower themes. Examples include “Airlines,” “Health Care Facilities” or “Semiconductors”.
The Adviser continuously updates its investment discipline and adjusts the Fund’s portfolio as necessary to keep the Fund invested in stocks in those groups which the Adviser believes are the most attractive. Such adjustments usually results in high portfolio turnover.
The Fund may invest in U.S. and some foreign (developed and emerging) government-related securities, including those issued by sovereign and local governments and their sponsored entities, U.S. and some foreign corporate securities, and securitized debts. The Funds may invest in both above and below investment grade securities or mutual funds and exchange-traded funds that invest in these securities.
The Fund may engage in short sales of index-related and other equity securities to reduce its equity exposure or to profit from an anticipated decline in the price of the security sold short.
The Fund’s investments are allocated among common stocks, corporate bonds, government bonds, real estate investment trusts, commodities (including both physical commodities and commodity-based exchange-traded funds), and cash equivalents. Portfolio weightings in these asset classes are driven by models that (1) determine the relative appeal of each asset class in relation to the others, and (2) the return potential of each asset class on an absolute, or stand-alone, basis. |
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Risk [Heading] | rr_RiskHeading | Principal Risks of Investing in the Fund |
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Risk Narrative [Text Block] | rr_RiskNarrativeTextBlock | Investors in the Fund may lose money. The principal risks of investing in the Fund, including the risks to which the Fund’s portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund’s performance, are summarized below.
As a result, the Fund is a suitable investment only for those investors who have medium to long-term investment goals. Prospective investors who are uncomfortable with an investment that may decrease in value should not invest in the Fund. The Adviser does not intend the Fund to be a fixed, balanced investment program. Rather, the Fund is intended to be a flexible core investment suitable for long-term investors. Long-term investors may wish to supplement an investment in the Fund with other investments to satisfy their short-term financial needs and to diversify their exposure to various markets and asset classes |
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Risk Lose Money [Text] | rr_RiskLoseMoney | Investors in the Fund may lose money.
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Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | Performance Information |
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Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund. The bar chart shows the performance of the Fund’s Retail Class shares, and performance of the Fund’s Institutional Class shares will differ from those shown to the extent that the classes of shares do not have the same expenses or inception date. Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future. Updated performance information is available on the Fund’s website, www.leutholdfunds.com. |
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Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund.
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Performance Additional Market Index [Text] | rr_PerformanceAdditionalMarketIndex | We use the Lipper Flexible Portfolio Funds Index, the Morningstar Tactical Allocation Index, and Bloomberg Barclays Global Aggregate Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund. |
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Performance Availability Website Address [Text] | rr_PerformanceAvailabilityWebSiteAddress | www.leutholdfunds.com
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Performance Past Does Not Indicate Future [Text] | rr_PerformancePastDoesNotIndicateFuture | Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future.
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Bar Chart [Heading] | rr_BarChartHeading | Leuthold Core Investment Fund Total Return of the Retail Shares (per calendar year) |
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Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock | Note: During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 16.10% (quarter ended September 30, 2009) and the lowest total return for a quarter was -14.71% (quarter ended December 31, 2008). |
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Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | highest total return
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Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Sep. 30, 2009 | |||||||||||||||||||||||||||||||||||||||||||||||||
Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 16.10% | |||||||||||||||||||||||||||||||||||||||||||||||||
Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | lowest total return
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Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Dec. 31, 2008 | |||||||||||||||||||||||||||||||||||||||||||||||||
Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (14.71%) | |||||||||||||||||||||||||||||||||||||||||||||||||
Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes.
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Performance Table Not Relevant to Tax Deferred | rr_PerformanceTableNotRelevantToTaxDeferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
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Performance Table Explanation after Tax Higher | rr_PerformanceTableExplanationAfterTaxHigher | The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares.
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Performance Table Closing [Text Block] | rr_PerformanceTableClosingTextBlock | The inception date for Institutional Shares is January 31, 2006.
We use the Lipper Flexible Portfolio Funds Index, the Morningstar Tactical Allocation Index, and Bloomberg Barclays Global Aggregate Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares.
One of the Fund’s additional indices has changed. Previously, the Fund used the Barclays U.S. Aggregate Index, but now the Fund uses the Bloomberg Barclays Global Aggregate Index, because the new index better reflects both the underlying holdings of the Fund and the investible stock universe for the Fund. The average annual total returns of the Barclays U.S. Aggregate Index for the one-year, five-year and ten-year periods ended December 31, 2017 were 3.54%,2.10%and 4.01%,respectively. |
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Caption | rr_AverageAnnualReturnCaption | Average Annual Total Returns (for the periods ended December 31, 2017) |
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Leuthold Core Investment Fund | S&P 500 Index | |||||||||||||||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | S&P 500 Index
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 21.83% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 15.79% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 8.50% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Jan. 31, 2006 | |||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Core Investment Fund | Lipper Flexible Portfolio Funds Index | |||||||||||||||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Lipper Flexible Portfolio Funds Index
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 15.47% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 7.77% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 5.21% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Jan. 31, 2006 | |||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Core Investment Fund | Morningstar Tactical Allocation Index | |||||||||||||||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Morningstar Tactical Allocation Index
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 12.63% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 5.36% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 3.78% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Jan. 31, 2006 | |||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Core Investment Fund | Bloomberg Barclays Global Aggregate Index | |||||||||||||||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Bloomberg Barclays Global Aggregate Index
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 7.40% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 0.79% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 3.09% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Jan. 31, 2006 | |||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Core Investment Fund | Leuthold Core Investment Fund-Retail Class | |||||||||||||||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||||||||||||||
Maximum Sales Charge (Load) Imposed on Purchases | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | |||||||||||||||||||||||||||||||||||||||||||||||||
Maximum Deferred Sales Charge (Load) | rr_MaximumDeferredSalesChargeOverOther | none | |||||||||||||||||||||||||||||||||||||||||||||||||
Maximum Deferred Sales Charge (Load) Imposed on Reinvested Dividends and Distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||||||||||||||||||||||||||||||||||||||||||
Redemption Fee (as a percentage of amount redeemed within 5 business days of purchase) | rr_RedemptionFeeOverRedemption | 2.00% | |||||||||||||||||||||||||||||||||||||||||||||||||
Exchange Fee (as a percentage of amount exchanged within 5 business days of purchase) | rr_ExchangeFeeOverRedemption | 2.00% | |||||||||||||||||||||||||||||||||||||||||||||||||
Management Fees | rr_ManagementFeesOverAssets | 0.90% | |||||||||||||||||||||||||||||||||||||||||||||||||
Distribution (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none | |||||||||||||||||||||||||||||||||||||||||||||||||
Service Fees | rr_Component1OtherExpensesOverAssets | 0.11% | |||||||||||||||||||||||||||||||||||||||||||||||||
Dividends on Short Positions | rr_Component2OtherExpensesOverAssets | 0.02% | |||||||||||||||||||||||||||||||||||||||||||||||||
All Remaining Other Expenses | rr_Component3OtherExpensesOverAssets | 0.18% | |||||||||||||||||||||||||||||||||||||||||||||||||
Other Expenses | rr_OtherExpensesOverAssets | 0.37% | |||||||||||||||||||||||||||||||||||||||||||||||||
Acquired Fund Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.06% | [1] | ||||||||||||||||||||||||||||||||||||||||||||||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.27% | |||||||||||||||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 1 Year | rr_ExpenseExampleYear01 | $ 129 | |||||||||||||||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 3 Years | rr_ExpenseExampleYear03 | 403 | |||||||||||||||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 5 Years | rr_ExpenseExampleYear05 | 697 | |||||||||||||||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 10 Years | rr_ExpenseExampleYear10 | $ 1,534 | |||||||||||||||||||||||||||||||||||||||||||||||||
Annual Return 2008 | rr_AnnualReturn2008 | (27.44%) | |||||||||||||||||||||||||||||||||||||||||||||||||
Annual Return 2009 | rr_AnnualReturn2009 | 27.49% | |||||||||||||||||||||||||||||||||||||||||||||||||
Annual Return 2010 | rr_AnnualReturn2010 | 3.53% | |||||||||||||||||||||||||||||||||||||||||||||||||
Annual Return 2011 | rr_AnnualReturn2011 | (5.34%) | |||||||||||||||||||||||||||||||||||||||||||||||||
Annual Return 2012 | rr_AnnualReturn2012 | 8.32% | |||||||||||||||||||||||||||||||||||||||||||||||||
Annual Return 2013 | rr_AnnualReturn2013 | 19.18% | |||||||||||||||||||||||||||||||||||||||||||||||||
Annual Return 2014 | rr_AnnualReturn2014 | 8.58% | |||||||||||||||||||||||||||||||||||||||||||||||||
Annual Return 2015 | rr_AnnualReturn2015 | (0.96%) | |||||||||||||||||||||||||||||||||||||||||||||||||
Annual Return 2016 | rr_AnnualReturn2016 | 4.51% | |||||||||||||||||||||||||||||||||||||||||||||||||
Annual Return 2017 | rr_AnnualReturn2017 | 15.76% | |||||||||||||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Retail Shares Return Before Taxes
|
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 15.76% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 9.16% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 4.29% | |||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Core Investment Fund | Leuthold Core Investment Fund-Retail Class | After Taxes on Distributions | |||||||||||||||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return After Taxes on Distributions
|
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 14.90% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 7.83% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 3.52% | |||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Core Investment Fund | Leuthold Core Investment Fund-Retail Class | After Taxes on Distributions and Sale of Fund Shares | |||||||||||||||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return After Taxes on Distributions and Sale of Fund Shares
|
|||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 9.63% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 6.91% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 3.21% | |||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Core Investment Fund | Leuthold Core Investment Fund-Institutional Class | |||||||||||||||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||||||||||||||
Maximum Sales Charge (Load) Imposed on Purchases | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | |||||||||||||||||||||||||||||||||||||||||||||||||
Maximum Deferred Sales Charge (Load) | rr_MaximumDeferredSalesChargeOverOther | none | |||||||||||||||||||||||||||||||||||||||||||||||||
Maximum Deferred Sales Charge (Load) Imposed on Reinvested Dividends and Distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||||||||||||||||||||||||||||||||||||||||||
Redemption Fee (as a percentage of amount redeemed within 5 business days of purchase) | rr_RedemptionFeeOverRedemption | 2.00% | |||||||||||||||||||||||||||||||||||||||||||||||||
Exchange Fee (as a percentage of amount exchanged within 5 business days of purchase) | rr_ExchangeFeeOverRedemption | 2.00% | |||||||||||||||||||||||||||||||||||||||||||||||||
Management Fees | rr_ManagementFeesOverAssets | 0.90% | |||||||||||||||||||||||||||||||||||||||||||||||||
Distribution (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none | |||||||||||||||||||||||||||||||||||||||||||||||||
Service Fees | rr_Component1OtherExpensesOverAssets | none | |||||||||||||||||||||||||||||||||||||||||||||||||
Dividends on Short Positions | rr_Component2OtherExpensesOverAssets | 0.02% | |||||||||||||||||||||||||||||||||||||||||||||||||
All Remaining Other Expenses | rr_Component3OtherExpensesOverAssets | 0.18% | |||||||||||||||||||||||||||||||||||||||||||||||||
Other Expenses | rr_OtherExpensesOverAssets | 0.26% | |||||||||||||||||||||||||||||||||||||||||||||||||
Acquired Fund Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.06% | [1] | ||||||||||||||||||||||||||||||||||||||||||||||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.16% | |||||||||||||||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 1 Year | rr_ExpenseExampleYear01 | $ 118 | |||||||||||||||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 3 Years | rr_ExpenseExampleYear03 | 368 | |||||||||||||||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 5 Years | rr_ExpenseExampleYear05 | 638 | |||||||||||||||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 10 Years | rr_ExpenseExampleYear10 | $ 1,409 | |||||||||||||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Institutional Shares Return Before Taxes
|
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 15.88% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 9.27% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 4.40% | |||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Jan. 31, 2006 | |||||||||||||||||||||||||||||||||||||||||||||||||
|
Leuthold Global Fund | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Global Fund | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Investment Objective | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Global Fund seeks capital appreciation and income (or “total return”) in amounts attainable by assuming only prudent investment risk over the long term. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Fund Fees and Expenses | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Shareholder Fees (fees paid directly from your investment) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Example | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of these periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Although your actual costs may be higher or lower, based on these assumptions your costs would be: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Portfolio Turnover | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 63.13 % of the average value of its portfolio. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Principal Investment Strategies of the Fund | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Global Fund is a “flexible” fund, meaning that it allocates its investments among:
in proportions which reflect the judgment of Leuthold Weeden Capital Management (referred to as the Adviser) of the potential returns and risks of each asset class.
The Adviser considers a number of factors when making these allocations, including economic conditions and monetary factors, inflation and interest rate levels and trends, investor confidence, and technical stock market measures. Normally, the Fund will invest at least 40% of its assets in securities from international markets, unless market conditions are not deemed favorable by the Adviser, in which case the Fund may invest less than 40% of its assets in securities from international markets (but in any event not less than 30%). While at least 40% of the Fund’s assets will be invested in securities from international markets, the Fund’s investments will be allocated among the following categories, with portions of each being made up of domestic and international securities:
The Fund’s investments in common stocks and other equity securities may consist of the following from around the world:
In investing in equity securities and debt securities, the Fund utilizes a disciplined, unemotional, quantitative investment approach that is based on the belief investors can achieve superior investment performance through group selection (Global Group Strategy). The Fund will invest in domestic and foreign companies of all sizes and industries as well as in “growth” stocks and “value” stocks.
The Adviser currently monitors about 90 global groups. The major types of groups the Adviser monitors are Industry Specific Groups comprised of narrower themes. Examples include “Airlines,” “Health Care Facilities” or “Semiconductors”.
The Adviser continuously updates its investment discipline and adjusts the Fund’s portfolio as necessary to keep the Fund invested in stocks in those groups which the Adviser believes are the most attractive. Such adjustments may result in high portfolio turnover.
The Fund may invest in global (developed and emerging) government related securities, including those issued by sovereign and local governments and their sponsored entities, global corporate securities, and securitized debts. The Fund may invest in both above and below investment grade securities or mutual funds and exchange-traded funds that invest in these securities.
The Fund may engage in short sales of index-related and other equity securities to reduce its equity exposure or to profit from an anticipated decline in the price of the security sold short. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Principal Risks of Investing in the Fund | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Investors in the Fund may lose money. The principal risks of investing in the Fund, including the risks to which the Fund’s portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund’s performance, are summarized below.
The Fund’s investment performance will also suffer if it is required to close out a short position earlier than it had intended. In addition, the Fund may be subject to expenses related to short sales that are not typically associated with investing in securities directly, such as costs of borrowing and margin account maintenance costs associated with the Fund’s open short positions. These expenses may negatively impact the performance of the Fund. Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited risk.
As a result, the Fund is a suitable investment only for those investors who have medium to long-term investment goals. Prospective investors who are uncomfortable with an investment that may decrease in value should not invest in the Fund. The Adviser does not intend the Fund to be a fixed, balanced investment program. Rather, the Fund is intended to be a flexible core investment suitable for long-term investors. Long-term investors may wish to supplement an investment in the Fund with other investments to satisfy their short-term financial needs and to diversify their exposure to various markets and asset classes. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Performance Information | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund. The bar chart shows the performance of the Fund’s Retail Class shares, and performance of the Fund’s Institutional Class shares will differ from those shown to the extent that the classes of shares do not have the same expenses or inception date. Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future. Updated performance information is available on the Fund’s website, www.leutholdfunds.com. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Global Fund Total Return of the Retail Shares (per calendar year) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Note: During the nine year period shown on the bar chart, the Fund’s highest total return for a quarter was 16.61% (quarter ended June 30, 2009) and the lowest return for a quarter was -13.11% (quarter ended September 30, 2011). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Total Returns (for the periods ended December 31, 2017) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The inception date for Retail Shares is July 1, 2008. The inception date for Institutional Shares is April 30, 2008.
We use the MSCI All Country World Index and Bloomberg Barclays Global Aggregate Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares. |
Label | Element | Value | |||||||||||||||||||||||||||||||||||||
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Leuthold Global Fund | |||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||
Risk/Return [Heading] | rr_RiskReturnHeading | Leuthold Global Fund |
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Objective [Heading] | rr_ObjectiveHeading | Investment Objective |
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Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | Leuthold Global Fund seeks capital appreciation and income (or “total return”) in amounts attainable by assuming only prudent investment risk over the long term. |
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Expense [Heading] | rr_ExpenseHeading | Fund Fees and Expenses |
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Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. |
|||||||||||||||||||||||||||||||||||||
Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder Fees (fees paid directly from your investment) |
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Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) |
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Portfolio Turnover [Heading] | rr_PortfolioTurnoverHeading | Portfolio Turnover |
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Portfolio Turnover [Text Block] | rr_PortfolioTurnoverTextBlock | The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 63.13 % of the average value of its portfolio. |
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Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 63.13% | |||||||||||||||||||||||||||||||||||||
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] | rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees | Acquired Fund Fees and Expenses are not directly borne by the Fund, and they are not reflected in the Fund’s financial statements, with the result that the information presented in the expense table may differ from that presented in the financial highlights. |
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Expense Example [Heading] | rr_ExpenseExampleHeading | Example |
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Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of these periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. |
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Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Although your actual costs may be higher or lower, based on these assumptions your costs would be: |
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Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies of the Fund |
|||||||||||||||||||||||||||||||||||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | Leuthold Global Fund is a “flexible” fund, meaning that it allocates its investments among:
in proportions which reflect the judgment of Leuthold Weeden Capital Management (referred to as the Adviser) of the potential returns and risks of each asset class.
The Adviser considers a number of factors when making these allocations, including economic conditions and monetary factors, inflation and interest rate levels and trends, investor confidence, and technical stock market measures. Normally, the Fund will invest at least 40% of its assets in securities from international markets, unless market conditions are not deemed favorable by the Adviser, in which case the Fund may invest less than 40% of its assets in securities from international markets (but in any event not less than 30%). While at least 40% of the Fund’s assets will be invested in securities from international markets, the Fund’s investments will be allocated among the following categories, with portions of each being made up of domestic and international securities:
The Fund’s investments in common stocks and other equity securities may consist of the following from around the world:
In investing in equity securities and debt securities, the Fund utilizes a disciplined, unemotional, quantitative investment approach that is based on the belief investors can achieve superior investment performance through group selection (Global Group Strategy). The Fund will invest in domestic and foreign companies of all sizes and industries as well as in “growth” stocks and “value” stocks.
The Adviser currently monitors about 90 global groups. The major types of groups the Adviser monitors are Industry Specific Groups comprised of narrower themes. Examples include “Airlines,” “Health Care Facilities” or “Semiconductors”.
The Adviser continuously updates its investment discipline and adjusts the Fund’s portfolio as necessary to keep the Fund invested in stocks in those groups which the Adviser believes are the most attractive. Such adjustments may result in high portfolio turnover.
The Fund may invest in global (developed and emerging) government related securities, including those issued by sovereign and local governments and their sponsored entities, global corporate securities, and securitized debts. The Fund may invest in both above and below investment grade securities or mutual funds and exchange-traded funds that invest in these securities.
The Fund may engage in short sales of index-related and other equity securities to reduce its equity exposure or to profit from an anticipated decline in the price of the security sold short. |
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Risk [Heading] | rr_RiskHeading | Principal Risks of Investing in the Fund |
|||||||||||||||||||||||||||||||||||||
Risk Narrative [Text Block] | rr_RiskNarrativeTextBlock | Investors in the Fund may lose money. The principal risks of investing in the Fund, including the risks to which the Fund’s portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund’s performance, are summarized below.
The Fund’s investment performance will also suffer if it is required to close out a short position earlier than it had intended. In addition, the Fund may be subject to expenses related to short sales that are not typically associated with investing in securities directly, such as costs of borrowing and margin account maintenance costs associated with the Fund’s open short positions. These expenses may negatively impact the performance of the Fund. Short positions introduce more risk to the Fund than long positions (purchases) because the maximum sustainable loss on a security purchased (held long) is limited to the amount paid for the security plus the transaction costs, whereas there is no maximum attainable price of the shorted security. Therefore, in theory, securities sold short have unlimited risk.
As a result, the Fund is a suitable investment only for those investors who have medium to long-term investment goals. Prospective investors who are uncomfortable with an investment that may decrease in value should not invest in the Fund. The Adviser does not intend the Fund to be a fixed, balanced investment program. Rather, the Fund is intended to be a flexible core investment suitable for long-term investors. Long-term investors may wish to supplement an investment in the Fund with other investments to satisfy their short-term financial needs and to diversify their exposure to various markets and asset classes. |
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Risk Lose Money [Text] | rr_RiskLoseMoney | Investors in the Fund may lose money.
|
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Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | Performance Information |
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Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund. The bar chart shows the performance of the Fund’s Retail Class shares, and performance of the Fund’s Institutional Class shares will differ from those shown to the extent that the classes of shares do not have the same expenses or inception date. Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future. Updated performance information is available on the Fund’s website, www.leutholdfunds.com. |
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Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund.
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Performance Additional Market Index [Text] | rr_PerformanceAdditionalMarketIndex | We use the MSCI All Country World Index and Bloomberg Barclays Global Aggregate Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund. |
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Performance Availability Website Address [Text] | rr_PerformanceAvailabilityWebSiteAddress | www.leutholdfunds.com
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Performance Past Does Not Indicate Future [Text] | rr_PerformancePastDoesNotIndicateFuture | Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future.
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Bar Chart [Heading] | rr_BarChartHeading | Leuthold Global Fund Total Return of the Retail Shares (per calendar year) |
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Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock | Note: During the nine year period shown on the bar chart, the Fund’s highest total return for a quarter was 16.61% (quarter ended June 30, 2009) and the lowest return for a quarter was -13.11% (quarter ended September 30, 2011). |
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Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | highest total return
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Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Jun. 30, 2009 | |||||||||||||||||||||||||||||||||||||
Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 16.61% | |||||||||||||||||||||||||||||||||||||
Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | lowest return
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Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Sep. 30, 2011 | |||||||||||||||||||||||||||||||||||||
Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (13.11%) | |||||||||||||||||||||||||||||||||||||
Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes.
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Performance Table Not Relevant to Tax Deferred | rr_PerformanceTableNotRelevantToTaxDeferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
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Performance Table Explanation after Tax Higher | rr_PerformanceTableExplanationAfterTaxHigher | The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares.
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Performance Table Closing [Text Block] | rr_PerformanceTableClosingTextBlock | The inception date for Retail Shares is July 1, 2008. The inception date for Institutional Shares is April 30, 2008.
We use the MSCI All Country World Index and Bloomberg Barclays Global Aggregate Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares. |
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Caption | rr_AverageAnnualReturnCaption | Average Annual Total Returns (for the periods ended December 31, 2017) |
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Leuthold Global Fund | S&P 500 Index Retail Class Comparison | |||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | S&P 500 Index Retail Class Comparison
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 21.83% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 15.79% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 10.38% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Jul. 01, 2008 | |||||||||||||||||||||||||||||||||||||
Leuthold Global Fund | MSCI All Country World Index Retail Class Comparison | |||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | MSCI All Country World Index Retail Class Comparison
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 24.62% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 11.40% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 6.82% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Jul. 01, 2008 | |||||||||||||||||||||||||||||||||||||
Leuthold Global Fund | Barclays Global Aggregate Index Retail Class Comparison | |||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Bloomberg Barclays Global Aggregate Index Retail Class Comparison
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 7.40% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 0.79% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 2.90% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Jul. 01, 2008 | |||||||||||||||||||||||||||||||||||||
Leuthold Global Fund | S&P 500 Index Institutional Class Comparison | |||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | S&P 500 Index Institutional Class Comparison
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 21.83% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 15.79% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 9.38% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Apr. 30, 2008 | |||||||||||||||||||||||||||||||||||||
Leuthold Global Fund | MSCI All Country World Index Institutional Class Comparison | |||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | MSCI All Country World Index Institutional Class Comparison
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 24.62% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 11.40% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 5.85% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Apr. 30, 2008 | |||||||||||||||||||||||||||||||||||||
Leuthold Global Fund | Barclays Global Aggregate Index Institutional Class Comparison | |||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Bloomberg Barclays Global Aggregate Index Institutional Class Comparison
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 7.40% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 0.79% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 2.72% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Apr. 30, 2008 | |||||||||||||||||||||||||||||||||||||
Leuthold Global Fund | Leuthold Global Fund (Retail) | |||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||
Maximum Sales Charge (Load) Imposed on Purchases | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | |||||||||||||||||||||||||||||||||||||
Maximum Deferred Sales Charge (Load) | rr_MaximumDeferredSalesChargeOverOther | none | |||||||||||||||||||||||||||||||||||||
Maximum Deferred Sales Charge (Load) Imposed on Reinvested Dividends and Distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||||||||||||||||||||||||||||||
Redemption Fee (as a percentage of amount redeemed within 5 business days of purchase) | rr_RedemptionFeeOverRedemption | 2.00% | |||||||||||||||||||||||||||||||||||||
Exchange Fee (as a percentage of amount exchanged within 5 business days of purchase) | rr_ExchangeFeeOverRedemption | 2.00% | |||||||||||||||||||||||||||||||||||||
Management Fees | rr_ManagementFeesOverAssets | 0.90% | |||||||||||||||||||||||||||||||||||||
Distribution (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | 0.20% | |||||||||||||||||||||||||||||||||||||
All Remaining Other Expenses | rr_Component3OtherExpensesOverAssets | 0.46% | |||||||||||||||||||||||||||||||||||||
Other Expenses | rr_OtherExpensesOverAssets | 0.52% | |||||||||||||||||||||||||||||||||||||
Acquired Fund Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.06% | [1] | ||||||||||||||||||||||||||||||||||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.62% | |||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 1 Year | rr_ExpenseExampleYear01 | $ 165 | |||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 3 Years | rr_ExpenseExampleYear03 | 511 | |||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 5 Years | rr_ExpenseExampleYear05 | 881 | |||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 10 Years | rr_ExpenseExampleYear10 | $ 1,922 | |||||||||||||||||||||||||||||||||||||
Annual Return 2009 | rr_AnnualReturn2009 | 31.72% | |||||||||||||||||||||||||||||||||||||
Annual Return 2010 | rr_AnnualReturn2010 | 15.38% | |||||||||||||||||||||||||||||||||||||
Annual Return 2011 | rr_AnnualReturn2011 | (7.44%) | |||||||||||||||||||||||||||||||||||||
Annual Return 2012 | rr_AnnualReturn2012 | 10.87% | |||||||||||||||||||||||||||||||||||||
Annual Return 2013 | rr_AnnualReturn2013 | 17.53% | |||||||||||||||||||||||||||||||||||||
Annual Return 2014 | rr_AnnualReturn2014 | 3.15% | |||||||||||||||||||||||||||||||||||||
Annual Return 2015 | rr_AnnualReturn2015 | (1.82%) | |||||||||||||||||||||||||||||||||||||
Annual Return 2016 | rr_AnnualReturn2016 | 1.42% | |||||||||||||||||||||||||||||||||||||
Annual Return 2017 | rr_AnnualReturn2017 | 16.53% | |||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Retail Shares Return Before Taxes
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 16.53% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 7.06% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 5.36% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Jul. 01, 2008 | |||||||||||||||||||||||||||||||||||||
Leuthold Global Fund | Leuthold Global Fund (Retail) | After Taxes on Distributions | |||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return After Taxes on Distributions
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 13.68% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 4.69% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 3.93% | |||||||||||||||||||||||||||||||||||||
Leuthold Global Fund | Leuthold Global Fund (Retail) | After Taxes on Distributions and Sale of Fund Shares | |||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return After Taxes on Distributions and Sale of Shares
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 10.83% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 5.07% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 4.02% | |||||||||||||||||||||||||||||||||||||
Leuthold Global Fund | Leuthold Global Fund (Institutional) | |||||||||||||||||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||||||||||||||||||||
Maximum Sales Charge (Load) Imposed on Purchases | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | |||||||||||||||||||||||||||||||||||||
Maximum Deferred Sales Charge (Load) | rr_MaximumDeferredSalesChargeOverOther | none | |||||||||||||||||||||||||||||||||||||
Maximum Deferred Sales Charge (Load) Imposed on Reinvested Dividends and Distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||||||||||||||||||||||||||||||
Redemption Fee (as a percentage of amount redeemed within 5 business days of purchase) | rr_RedemptionFeeOverRedemption | 2.00% | |||||||||||||||||||||||||||||||||||||
Exchange Fee (as a percentage of amount exchanged within 5 business days of purchase) | rr_ExchangeFeeOverRedemption | 2.00% | |||||||||||||||||||||||||||||||||||||
Management Fees | rr_ManagementFeesOverAssets | 0.90% | |||||||||||||||||||||||||||||||||||||
Distribution (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none | |||||||||||||||||||||||||||||||||||||
All Remaining Other Expenses | rr_Component3OtherExpensesOverAssets | 0.46% | |||||||||||||||||||||||||||||||||||||
Other Expenses | rr_OtherExpensesOverAssets | 0.52% | |||||||||||||||||||||||||||||||||||||
Acquired Fund Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.06% | [1] | ||||||||||||||||||||||||||||||||||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.42% | |||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 1 Year | rr_ExpenseExampleYear01 | $ 145 | |||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 3 Years | rr_ExpenseExampleYear03 | 449 | |||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 5 Years | rr_ExpenseExampleYear05 | 776 | |||||||||||||||||||||||||||||||||||||
Expense Example, with Redemption, 10 Years | rr_ExpenseExampleYear10 | $ 1,702 | |||||||||||||||||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Institutional Shares Return Before Taxes
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 16.72% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 7.29% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 5.37% | |||||||||||||||||||||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | Apr. 30, 2008 | |||||||||||||||||||||||||||||||||||||
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Leuthold Select Industries Fund | |||||||||||||||||||||||||||||||||||
Leuthold Select Industries Fund | |||||||||||||||||||||||||||||||||||
Investment Objective | |||||||||||||||||||||||||||||||||||
Leuthold Select Industries Fund (LSLTX) seeks capital appreciation. | |||||||||||||||||||||||||||||||||||
Fund Fees and Expenses | |||||||||||||||||||||||||||||||||||
The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. | |||||||||||||||||||||||||||||||||||
Shareholder Fees (fees paid directly from your investment) | |||||||||||||||||||||||||||||||||||
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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) | |||||||||||||||||||||||||||||||||||
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Example | |||||||||||||||||||||||||||||||||||
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of these periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. | |||||||||||||||||||||||||||||||||||
Although your actual costs may be higher or lower, based on these assumptions your costs would be: | |||||||||||||||||||||||||||||||||||
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Portfolio Turnover | |||||||||||||||||||||||||||||||||||
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 62.72% of the average value of its portfolio. | |||||||||||||||||||||||||||||||||||
Principal Investment Strategies of the Fund | |||||||||||||||||||||||||||||||||||
The Fund seeks capital appreciation by investing substantially all of its assets in equity securities traded in the U.S. securities markets (including common stocks, preferred stocks, convertible preferred stocks, warrants, options, and American Depository Receipts). The Fund invests in companies of all sizes and industries as well as in “growth” stocks and “value” stocks. In investing in equity securities, the Fund uses a disciplined, unemotional, quantitative investment approach that is based on the belief investors can achieve superior investment performance through group selection (Select Industries Strategy).
Pursuant to the Select Industries Strategy, Leuthold Weeden Capital Management (referred to as the Adviser) believes that as shifts among industry groups in the equity market have become more dramatic, group selection has become as important as individual stock selection in determining investment performance. The Adviser considers a group to be a collection of stocks whose investment performance tends to be similarly influenced by a variety of factors. The Adviser currently monitors about 110 groups. The major types of groups the Adviser monitors are Industry Specific Groups comprised of narrower themes. Examples include “Airlines,” “Health Care Facilities” or “Semiconductors”.
The Adviser continuously updates its investment discipline and adjusts the Fund’s portfolio as necessary to keep the Fund invested in stocks in those groups which the Adviser believes are the most attractive. Such adjustments usually results in high portfolio turnover. | |||||||||||||||||||||||||||||||||||
Principal Risks of Investing in the Fund | |||||||||||||||||||||||||||||||||||
Investors in the Fund may lose money. The principal risks of investing in the Fund, including the risks to which the Fund’s portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund’s performance, are summarized below.
As a result, the Fund is a suitable investment only for those investors who have long-term investment goals. Prospective investors who are uncomfortable with an investment that may decrease in value should not invest in the Fund. | |||||||||||||||||||||||||||||||||||
Performance Information | |||||||||||||||||||||||||||||||||||
The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare to the performance with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund. Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future. | |||||||||||||||||||||||||||||||||||
Leuthold Select Industries Fund Total Return (per calendar year) | |||||||||||||||||||||||||||||||||||
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Note: During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 18.92% (quarter ended September 30, 2009) and the lowest total return for a quarter was-23.51% (quarter ended September 30, 2011). | |||||||||||||||||||||||||||||||||||
Average Annual Total Returns (for the periods ended December 31, 2017) | |||||||||||||||||||||||||||||||||||
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We use the Russell 2000 Index and Lipper Multi-Cap Core Funds Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. |
Label | Element | Value | ||||||||||||||||
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Leuthold Select Industries Fund | ||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
Risk/Return [Heading] | rr_RiskReturnHeading | Leuthold Select Industries Fund |
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Objective [Heading] | rr_ObjectiveHeading | Investment Objective |
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Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | Leuthold Select Industries Fund (LSLTX) seeks capital appreciation. |
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Expense [Heading] | rr_ExpenseHeading | Fund Fees and Expenses |
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Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. |
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Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder Fees (fees paid directly from your investment) |
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Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) |
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Portfolio Turnover [Heading] | rr_PortfolioTurnoverHeading | Portfolio Turnover |
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Portfolio Turnover [Text Block] | rr_PortfolioTurnoverTextBlock | The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 62.72% of the average value of its portfolio. |
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Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 62.72% | ||||||||||||||||
Expense Example [Heading] | rr_ExpenseExampleHeading | Example |
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Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of these periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. |
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Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Although your actual costs may be higher or lower, based on these assumptions your costs would be: |
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Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies of the Fund |
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Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | The Fund seeks capital appreciation by investing substantially all of its assets in equity securities traded in the U.S. securities markets (including common stocks, preferred stocks, convertible preferred stocks, warrants, options, and American Depository Receipts). The Fund invests in companies of all sizes and industries as well as in “growth” stocks and “value” stocks. In investing in equity securities, the Fund uses a disciplined, unemotional, quantitative investment approach that is based on the belief investors can achieve superior investment performance through group selection (Select Industries Strategy).
Pursuant to the Select Industries Strategy, Leuthold Weeden Capital Management (referred to as the Adviser) believes that as shifts among industry groups in the equity market have become more dramatic, group selection has become as important as individual stock selection in determining investment performance. The Adviser considers a group to be a collection of stocks whose investment performance tends to be similarly influenced by a variety of factors. The Adviser currently monitors about 110 groups. The major types of groups the Adviser monitors are Industry Specific Groups comprised of narrower themes. Examples include “Airlines,” “Health Care Facilities” or “Semiconductors”.
The Adviser continuously updates its investment discipline and adjusts the Fund’s portfolio as necessary to keep the Fund invested in stocks in those groups which the Adviser believes are the most attractive. Such adjustments usually results in high portfolio turnover. |
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Risk [Heading] | rr_RiskHeading | Principal Risks of Investing in the Fund |
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Risk Narrative [Text Block] | rr_RiskNarrativeTextBlock | Investors in the Fund may lose money. The principal risks of investing in the Fund, including the risks to which the Fund’s portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund’s performance, are summarized below.
As a result, the Fund is a suitable investment only for those investors who have long-term investment goals. Prospective investors who are uncomfortable with an investment that may decrease in value should not invest in the Fund. |
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Risk Lose Money [Text] | rr_RiskLoseMoney | Investors in the Fund may lose money.
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Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | Performance Information |
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Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare to the performance with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund. Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future. |
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Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare to the performance with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund.
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Performance Additional Market Index [Text] | rr_PerformanceAdditionalMarketIndex | We use the Russell 2000 Index and Lipper Multi-Cap Core Funds Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
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Performance Past Does Not Indicate Future [Text] | rr_PerformancePastDoesNotIndicateFuture | Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future.
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Bar Chart [Heading] | rr_BarChartHeading | Leuthold Select Industries Fund Total Return (per calendar year) |
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Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock | Note: During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 18.92% (quarter ended September 30, 2009) and the lowest total return for a quarter was-23.51% (quarter ended September 30, 2011). |
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Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | highest total return
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Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Sep. 30, 2009 | ||||||||||||||||
Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 18.92% | ||||||||||||||||
Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | lowest total return
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Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Sep. 30, 2011 | ||||||||||||||||
Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (23.51%) | ||||||||||||||||
Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes.
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Performance Table Not Relevant to Tax Deferred | rr_PerformanceTableNotRelevantToTaxDeferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
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Performance Table Closing [Text Block] | rr_PerformanceTableClosingTextBlock | We use the Russell 2000 Index and Lipper Multi-Cap Core Funds Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. |
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Caption | rr_AverageAnnualReturnCaption | Average Annual Total Returns (for the periods ended December 31, 2017) |
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Leuthold Select Industries Fund | S&P 500 Index | ||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
Label | rr_AverageAnnualReturnLabel | S&P 500 Index
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 21.83% | ||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 15.79% | ||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 8.50% | ||||||||||||||||
Leuthold Select Industries Fund | Russell 2000 Index | ||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Russell 2000 Index
|
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 14.65% | ||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 14.12% | ||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 8.71% | ||||||||||||||||
Leuthold Select Industries Fund | Lipper Multi-Cap Core Funds Index | ||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Lipper Multi-Cap Core Funds Index
|
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 20.54% | ||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 14.24% | ||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 7.69% | ||||||||||||||||
Leuthold Select Industries Fund | No Load | ||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
Maximum Sales Charge (Load) Imposed on Purchases | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | ||||||||||||||||
Maximum Deferred Sales Charge (Load) | rr_MaximumDeferredSalesChargeOverOther | none | ||||||||||||||||
Maximum Deferred Sales Charge (Load) Imposed on Reinvested Dividends and Distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | ||||||||||||||||
Redemption Fee (as a percentage of amount redeemed within 5 business days of purchase) | rr_RedemptionFeeOverRedemption | none | ||||||||||||||||
Exchange Fee (as a percentage of amount exchanged within 5 business days of purchase) | rr_ExchangeFeeOverRedemption | none | ||||||||||||||||
Management Fees | rr_ManagementFeesOverAssets | 1.00% | ||||||||||||||||
Distribution (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||||||||||||||
Service Fees | rr_Component1OtherExpensesOverAssets | 0.09% | ||||||||||||||||
All Remaining Other Expenses | rr_Component3OtherExpensesOverAssets | 0.71% | ||||||||||||||||
Other Expenses | rr_OtherExpensesOverAssets | 0.80% | ||||||||||||||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 1.80% | ||||||||||||||||
Fee Waiver or Reimbursement | rr_FeeWaiverOrReimbursementOverAssets | (0.30%) | [1] | |||||||||||||||
After Expense Reimbursement | rr_NetExpensesOverAssets | 1.50% | ||||||||||||||||
Expense Example, with Redemption, 1 Year | rr_ExpenseExampleYear01 | $ 153 | ||||||||||||||||
Expense Example, with Redemption, 3 Years | rr_ExpenseExampleYear03 | 537 | ||||||||||||||||
Expense Example, with Redemption, 5 Years | rr_ExpenseExampleYear05 | 947 | ||||||||||||||||
Expense Example, with Redemption, 10 Years | rr_ExpenseExampleYear10 | $ 2,091 | ||||||||||||||||
Annual Return 2008 | rr_AnnualReturn2008 | (34.67%) | ||||||||||||||||
Annual Return 2009 | rr_AnnualReturn2009 | 18.62% | ||||||||||||||||
Annual Return 2010 | rr_AnnualReturn2010 | 0.59% | ||||||||||||||||
Annual Return 2011 | rr_AnnualReturn2011 | (6.50%) | ||||||||||||||||
Annual Return 2012 | rr_AnnualReturn2012 | 11.92% | ||||||||||||||||
Annual Return 2013 | rr_AnnualReturn2013 | 41.93% | ||||||||||||||||
Annual Return 2014 | rr_AnnualReturn2014 | 16.27% | ||||||||||||||||
Annual Return 2015 | rr_AnnualReturn2015 | (0.73%) | ||||||||||||||||
Annual Return 2016 | rr_AnnualReturn2016 | 5.33% | ||||||||||||||||
Annual Return 2017 | rr_AnnualReturn2017 | 21.84% | ||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return before taxes
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 21.84% | ||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 16.02% | ||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 5.54% | ||||||||||||||||
Leuthold Select Industries Fund | No Load | After Taxes on Distributions | ||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return after taxes on distributions
|
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 20.48% | ||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 15.68% | ||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 5.38% | ||||||||||||||||
Leuthold Select Industries Fund | No Load | After Taxes on Distributions and Sale of Fund Shares | ||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return after taxes on distributions and sale of Fund shares
|
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 13.46% | ||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 12.95% | ||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 4.43% | ||||||||||||||||
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Leuthold Global Industries Fund | ||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Global Industries Fund | ||||||||||||||||||||||||||||||||||||||||||||||||
Investment Objective | ||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Global Industries Fund seeks capital appreciation and dividend income. | ||||||||||||||||||||||||||||||||||||||||||||||||
Fund Fees and Expenses | ||||||||||||||||||||||||||||||||||||||||||||||||
The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. | ||||||||||||||||||||||||||||||||||||||||||||||||
Shareholder Fees (fees paid directly from your investment) | ||||||||||||||||||||||||||||||||||||||||||||||||
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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) | ||||||||||||||||||||||||||||||||||||||||||||||||
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Example | ||||||||||||||||||||||||||||||||||||||||||||||||
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of these periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. | ||||||||||||||||||||||||||||||||||||||||||||||||
Although your actual costs may be higher or lower, based on these assumptions your costs would be: | ||||||||||||||||||||||||||||||||||||||||||||||||
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Portfolio Turnover | ||||||||||||||||||||||||||||||||||||||||||||||||
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 87.41%. | ||||||||||||||||||||||||||||||||||||||||||||||||
Principal Investment Strategies of the Fund | ||||||||||||||||||||||||||||||||||||||||||||||||
Normally, the Fund will invest at least 40% of its assets in securities from non-U.S. securities markets (the Fund refers to these markets as “international markets”), unless market conditions are not deemed favorable by the Fund’s investment adviser (Adviser), in which case the Fund may invest less than 40% of its assets in securities from international markets (but in any event not less than 30%). The Fund differs from the Leuthold Global Fund because the Leuthold Global Fund is a “flexible” fund that allocates its investments among equity securities, fixed-income securities, and money market instruments, while the Fund invests in equity securities.
The Fund’s investments in common stocks and other equity securities (which include preferred stocks, convertible preferred stocks, warrants, options, and American Depository Receipts) may consist of the following from around the world:
In investing in common stocks and other equity securities, the Fund utilizes a disciplined, unemotional, quantitative investment approach that is based on the belief investors can achieve superior investment performance through group selection (Global Group Strategy).
The Adviser currently monitors about 90 global groups. The major types of groups the Adviser monitors are Industry Specific Groups comprised of narrower themes. Examples include “Airlines,” “Health Care Facilities” or “Semiconductors”.
In selecting among equity securities within the global groups, the Fund looks for companies that are financially sound with good prospects for the future. It will invest in domestic and foreign companies of all sizes and industries as well as in”growth” stocks and “value” stocks. The Fund sells companies that no longer meet its investment criteria, or if better investment opportunities are available. In addition, the Adviser continuously updates its investment discipline and adjusts the Fund’s portfolio as necessary to keep the Fund invested in stocks in those groups which the Adviser believes are the most attractive. As a result, the Fund may engage in active and frequent trading, and the portfolio turnover of the Fund may be high. | ||||||||||||||||||||||||||||||||||||||||||||||||
Principal Risks of Investing in the Fund | ||||||||||||||||||||||||||||||||||||||||||||||||
Investors in the Fund may lose money. The principal risks of investing in the Fund, including the risks to which the Fund’s portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund’s performance, are summarized below.
As a result, the Fund is a suitable investment only for those investors who have long-term investment goals. Prospective investors who are uncomfortable with an investment that may decrease in value should not invest in the Fund. | ||||||||||||||||||||||||||||||||||||||||||||||||
Performance Information | ||||||||||||||||||||||||||||||||||||||||||||||||
The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund. The bar chart shows the performance of the Fund’s Retail Class shares, and performance of the Fund’s Institutional Class shares will differ from those shown to the extent that the classes of shares do not have the same expenses or inception date. Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future. Updated performance information is available on the Fund’s website, www.leutholdfunds.com. | ||||||||||||||||||||||||||||||||||||||||||||||||
Leuthold Global Industries Fund Total Return of the Retail Shares (per calendar year) | ||||||||||||||||||||||||||||||||||||||||||||||||
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Note: During the seven year period shown on the bar chart, the Fund’s highest total return for a quarter was 19.67% (quarter ended September 30, 2010) and the lowest total return for a quarter was -23.34% (quarter ended September 30, 2011). | ||||||||||||||||||||||||||||||||||||||||||||||||
Average Annual Total Returns (for the periods ended December 31, 2017) | ||||||||||||||||||||||||||||||||||||||||||||||||
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The inception date for Retail Shares and Institutional shares is May 17, 2010.
We use the MSCI All Country World Index and Lipper Global Multi-Cap Value Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares. |
Label | Element | Value | |||||||||||||||||||
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Leuthold Global Industries Fund | |||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||
Risk/Return [Heading] | rr_RiskReturnHeading | Leuthold Global Industries Fund |
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Objective [Heading] | rr_ObjectiveHeading | Investment Objective |
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Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | Leuthold Global Industries Fund seeks capital appreciation and dividend income. |
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Expense [Heading] | rr_ExpenseHeading | Fund Fees and Expenses |
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Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. |
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Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder Fees (fees paid directly from your investment) |
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Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) |
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Portfolio Turnover [Heading] | rr_PortfolioTurnoverHeading | Portfolio Turnover |
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Portfolio Turnover [Text Block] | rr_PortfolioTurnoverTextBlock | The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 87.41%. |
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Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | 87.41% | |||||||||||||||||||
Expense Example [Heading] | rr_ExpenseExampleHeading | Example |
|||||||||||||||||||
Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of these periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. |
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Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Although your actual costs may be higher or lower, based on these assumptions your costs would be: |
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Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies of the Fund |
|||||||||||||||||||
Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | Normally, the Fund will invest at least 40% of its assets in securities from non-U.S. securities markets (the Fund refers to these markets as “international markets”), unless market conditions are not deemed favorable by the Fund’s investment adviser (Adviser), in which case the Fund may invest less than 40% of its assets in securities from international markets (but in any event not less than 30%). The Fund differs from the Leuthold Global Fund because the Leuthold Global Fund is a “flexible” fund that allocates its investments among equity securities, fixed-income securities, and money market instruments, while the Fund invests in equity securities.
The Fund’s investments in common stocks and other equity securities (which include preferred stocks, convertible preferred stocks, warrants, options, and American Depository Receipts) may consist of the following from around the world:
In investing in common stocks and other equity securities, the Fund utilizes a disciplined, unemotional, quantitative investment approach that is based on the belief investors can achieve superior investment performance through group selection (Global Group Strategy).
The Adviser currently monitors about 90 global groups. The major types of groups the Adviser monitors are Industry Specific Groups comprised of narrower themes. Examples include “Airlines,” “Health Care Facilities” or “Semiconductors”.
In selecting among equity securities within the global groups, the Fund looks for companies that are financially sound with good prospects for the future. It will invest in domestic and foreign companies of all sizes and industries as well as in”growth” stocks and “value” stocks. The Fund sells companies that no longer meet its investment criteria, or if better investment opportunities are available. In addition, the Adviser continuously updates its investment discipline and adjusts the Fund’s portfolio as necessary to keep the Fund invested in stocks in those groups which the Adviser believes are the most attractive. As a result, the Fund may engage in active and frequent trading, and the portfolio turnover of the Fund may be high. |
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Risk [Heading] | rr_RiskHeading | Principal Risks of Investing in the Fund |
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Risk Narrative [Text Block] | rr_RiskNarrativeTextBlock | Investors in the Fund may lose money. The principal risks of investing in the Fund, including the risks to which the Fund’s portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund’s performance, are summarized below.
As a result, the Fund is a suitable investment only for those investors who have long-term investment goals. Prospective investors who are uncomfortable with an investment that may decrease in value should not invest in the Fund. |
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Risk Lose Money [Text] | rr_RiskLoseMoney | Investors in the Fund may lose money.
|
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Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | Performance Information |
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Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund. The bar chart shows the performance of the Fund’s Retail Class shares, and performance of the Fund’s Institutional Class shares will differ from those shown to the extent that the classes of shares do not have the same expenses or inception date. Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future. Updated performance information is available on the Fund’s website, www.leutholdfunds.com. |
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Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund.
|
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Performance Additional Market Index [Text] | rr_PerformanceAdditionalMarketIndex | We use the MSCI All Country World Index and Lipper Global Multi-Cap Value Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund. |
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Performance Availability Website Address [Text] | rr_PerformanceAvailabilityWebSiteAddress | www.leutholdfunds.com
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Performance Past Does Not Indicate Future [Text] | rr_PerformancePastDoesNotIndicateFuture | Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future.
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Bar Chart [Heading] | rr_BarChartHeading | Leuthold Global Industries Fund Total Return of the Retail Shares (per calendar year) |
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Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock | Note: During the seven year period shown on the bar chart, the Fund’s highest total return for a quarter was 19.67% (quarter ended September 30, 2010) and the lowest total return for a quarter was -23.34% (quarter ended September 30, 2011). |
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Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | highest total return
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Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Sep. 30, 2010 | |||||||||||||||||||
Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 19.67% | |||||||||||||||||||
Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | lowest total return
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Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Sep. 30, 2011 | |||||||||||||||||||
Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (23.34%) | |||||||||||||||||||
Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes.
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Performance Table Not Relevant to Tax Deferred | rr_PerformanceTableNotRelevantToTaxDeferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
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Performance Table Explanation after Tax Higher | rr_PerformanceTableExplanationAfterTaxHigher | The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares.
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Performance Table Closing [Text Block] | rr_PerformanceTableClosingTextBlock | The inception date for Retail Shares and Institutional shares is May 17, 2010.
We use the MSCI All Country World Index and Lipper Global Multi-Cap Value Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares. |
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Caption | rr_AverageAnnualReturnCaption | Average Annual Total Returns (for the periods ended December 31, 2017) |
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Leuthold Global Industries Fund | S&P 500 Index | |||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | S&P 500 Index
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 21.83% | |||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 15.79% | |||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 14.25% | |||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | May 17, 2010 | |||||||||||||||||||
Leuthold Global Industries Fund | MSCI All Country World Index | |||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | MSCI All Country World Index
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 24.62% | |||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 11.40% | |||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 10.82% | |||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | May 17, 2010 | |||||||||||||||||||
Leuthold Global Industries Fund | Lipper Global Multi-Cap Value Index | |||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Lipper Global Multi-Cap Value Index
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 19.37% | |||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 10.18% | |||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 9.83% | |||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | May 17, 2010 | |||||||||||||||||||
Leuthold Global Industries Fund | Retail Class | |||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||
Maximum Sales Charge (Load) Imposed on Purchases | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | |||||||||||||||||||
Maximum Deferred Sales Charge (Load) | rr_MaximumDeferredSalesChargeOverOther | none | |||||||||||||||||||
Maximum Deferred Sales Charge (Load) Imposed on Reinvested Dividends and Distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||||||||||||
Redemption Fee (as a percentage of amount redeemed within 5 business days of purchase) | rr_RedemptionFeeOverRedemption | 2.00% | |||||||||||||||||||
Exchange Fee (as a percentage of amount exchanged within 5 business days of purchase) | rr_ExchangeFeeOverRedemption | 2.00% | |||||||||||||||||||
Management Fees | rr_ManagementFeesOverAssets | 1.00% | |||||||||||||||||||
Distribution (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | 0.25% | |||||||||||||||||||
All Remaining Other Expenses | rr_Component3OtherExpensesOverAssets | 1.40% | |||||||||||||||||||
Other Expenses | rr_OtherExpensesOverAssets | 1.41% | |||||||||||||||||||
Acquired Fund Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.01% | [1] | ||||||||||||||||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 2.67% | |||||||||||||||||||
Fee Waiver or Reimbursement | rr_FeeWaiverOrReimbursementOverAssets | (1.17%) | [2] | ||||||||||||||||||
After Expense Reimbursement | rr_NetExpensesOverAssets | 1.51% | |||||||||||||||||||
Expense Example, with Redemption, 1 Year | rr_ExpenseExampleYear01 | $ 154 | |||||||||||||||||||
Expense Example, with Redemption, 3 Years | rr_ExpenseExampleYear03 | 719 | |||||||||||||||||||
Expense Example, with Redemption, 5 Years | rr_ExpenseExampleYear05 | 1,131 | |||||||||||||||||||
Expense Example, with Redemption, 10 Years | rr_ExpenseExampleYear10 | $ 2,917 | |||||||||||||||||||
Annual Return 2011 | rr_AnnualReturn2011 | (14.15%) | |||||||||||||||||||
Annual Return 2012 | rr_AnnualReturn2012 | 16.55% | |||||||||||||||||||
Annual Return 2013 | rr_AnnualReturn2013 | 33.80% | |||||||||||||||||||
Annual Return 2014 | rr_AnnualReturn2014 | 6.47% | |||||||||||||||||||
Annual Return 2015 | rr_AnnualReturn2015 | (2.03%) | |||||||||||||||||||
Annual Return 2016 | rr_AnnualReturn2016 | 2.36% | |||||||||||||||||||
Annual Return 2017 | rr_AnnualReturn2017 | 24.66% | |||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Retail Shares Return Before Taxes
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 24.66% | |||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 12.24% | |||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 10.82% | |||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | May 17, 2010 | |||||||||||||||||||
Leuthold Global Industries Fund | Retail Class | After Taxes on Distributions | |||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return After Taxes on Distributions
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 21.86% | |||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 11.24% | |||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 10.17% | |||||||||||||||||||
Leuthold Global Industries Fund | Retail Class | After Taxes on Distributions and Sale of Fund Shares | |||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return After Taxes on Distributions and Sale of Shares
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 15.26% | |||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 9.69% | |||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 8.79% | |||||||||||||||||||
Leuthold Global Industries Fund | Institutional Class | |||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | ||||||||||||||||||||
Maximum Sales Charge (Load) Imposed on Purchases | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | |||||||||||||||||||
Maximum Deferred Sales Charge (Load) | rr_MaximumDeferredSalesChargeOverOther | none | |||||||||||||||||||
Maximum Deferred Sales Charge (Load) Imposed on Reinvested Dividends and Distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | |||||||||||||||||||
Redemption Fee (as a percentage of amount redeemed within 5 business days of purchase) | rr_RedemptionFeeOverRedemption | 2.00% | |||||||||||||||||||
Exchange Fee (as a percentage of amount exchanged within 5 business days of purchase) | rr_ExchangeFeeOverRedemption | 2.00% | |||||||||||||||||||
Management Fees | rr_ManagementFeesOverAssets | 1.00% | |||||||||||||||||||
Distribution (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none | |||||||||||||||||||
All Remaining Other Expenses | rr_Component3OtherExpensesOverAssets | 1.40% | |||||||||||||||||||
Other Expenses | rr_OtherExpensesOverAssets | 1.41% | |||||||||||||||||||
Acquired Fund Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.01% | [1] | ||||||||||||||||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 2.42% | |||||||||||||||||||
Fee Waiver or Reimbursement | rr_FeeWaiverOrReimbursementOverAssets | (1.17%) | [2] | ||||||||||||||||||
After Expense Reimbursement | rr_NetExpensesOverAssets | 1.26% | |||||||||||||||||||
Expense Example, with Redemption, 1 Year | rr_ExpenseExampleYear01 | $ 128 | |||||||||||||||||||
Expense Example, with Redemption, 3 Years | rr_ExpenseExampleYear03 | 643 | |||||||||||||||||||
Expense Example, with Redemption, 5 Years | rr_ExpenseExampleYear05 | 1,186 | |||||||||||||||||||
Expense Example, with Redemption, 10 Years | rr_ExpenseExampleYear10 | $ 2,668 | |||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Institutional Shares Return Before Taxes
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 25.02% | |||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 12.52% | |||||||||||||||||||
Average Annual Returns, Since Inception | rr_AverageAnnualReturnSinceInception | 11.11% | |||||||||||||||||||
Average Annual Returns, Inception Date | rr_AverageAnnualReturnInceptionDate | May 17, 2010 | |||||||||||||||||||
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Grizzly Short Fund | |||||||||||||||||||||||||||||||||||
Grizzly Short Fund | |||||||||||||||||||||||||||||||||||
Investment Objective | |||||||||||||||||||||||||||||||||||
Grizzly Short Fund (GRZZX) seeks capital appreciation. | |||||||||||||||||||||||||||||||||||
Fund Fees and Expenses | |||||||||||||||||||||||||||||||||||
The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. | |||||||||||||||||||||||||||||||||||
Shareholder Fees (fees paid directly from your investment) | |||||||||||||||||||||||||||||||||||
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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) | |||||||||||||||||||||||||||||||||||
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Example | |||||||||||||||||||||||||||||||||||
This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of these periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. | |||||||||||||||||||||||||||||||||||
Although your actual costs may be higher or lower, based on these assumptions your costs would be: | |||||||||||||||||||||||||||||||||||
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Portfolio Turnover | |||||||||||||||||||||||||||||||||||
The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 0.00% of the average value of its portfolio. | |||||||||||||||||||||||||||||||||||
Principal Investment Strategies of the Fund | |||||||||||||||||||||||||||||||||||
Grizzly Short Fund sells stocks short. Short selling involves the sale of borrowed securities. When the Fund sells a stock short, it incurs an obligation to replace the stock borrowed at whatever its price may be at the time it purchases the stock for delivery to the securities lender. The Fund will realize a gain if at that time the price of the stock is less than the price of the stock when it was sold short, and will realize a loss if at that time the price of the stock is greater than the price of the stock when it was sold short. The aggregate amount of its outstanding short positions typically will be approximately equal to, or slightly less than, its net assets. When the Fund’s outstanding short positions equal its net assets, it is “100% short.” The Fund utilizes a disciplined, unemotional, quantitative investment approach.
The Fund believes that in all market conditions there will exist some companies whose stocks are overvalued by the market and that capital appreciation can be realized by selling short those stocks. However, the best overall results typically will be achieved in declining stock markets. In rising stock markets the risk of loss is likely. The Fund generally will have outstanding approximately 60 to 100 stocks that it has sold short. The Fund may increase the number of stocks it sells short if market conditions warrant an increase. In determining which stocks to sell short, Leuthold Weeden Capital Management (referred to as the Adviser) calculates a quantitative index for each security that it follows that is designed to identify those securities that are most likely to decline in price or underperform the market (the “Vulnerability Index”). In calculating a Vulnerability Index, the Adviser considers twelve or more components. Some of the components include fundamental factors such as earnings growth or dividends, while other components consider market factors such as institutional trading activity or insider buying or selling. From time to time the Fund may sell short index-related securities. The Fund will do so to rapidly increase its short position.
The Fund also follows a disciplined approach in determining when to cover its short positions. The factors the Adviser considers in determining when to cover short positions include:
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Principal Risks of Investing in the Fund | |||||||||||||||||||||||||||||||||||
Investors in the Fund may lose money. The principal risks of investing in the Fund, including the risks to which the Fund’s portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund’s performance, are summarized below.
Investors who wish to hedge some or all of their stock portfolios might find that investment goal consistent with an investment in the Fund.
However, because movements in the prices of the stocks the Fund has sold short are unlikely to correlate perfectly with the stocks in an investor’s portfolio, such an investor could incur both a loss on the investor’s stock portfolio and the investor’s investment in the Fund. | |||||||||||||||||||||||||||||||||||
Performance Information | |||||||||||||||||||||||||||||||||||
The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund. Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future. | |||||||||||||||||||||||||||||||||||
Grizzly Short Fund Total Return (per calendar year) | |||||||||||||||||||||||||||||||||||
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Note: During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 23.30% (quarter ended September 30,2011) and the lowest total return for a quarter was -26.55% (quarter ended June 30, 2009). | |||||||||||||||||||||||||||||||||||
Average Annual Total Returns (for the periods ended December 31, 2017) | |||||||||||||||||||||||||||||||||||
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We use the S&P Midcap 400 and Lipper Dedicated Short Bias Funds Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares. |
Label | Element | Value | ||||||||||||||||||||||
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Grizzly Short Fund | ||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||||||||
Risk/Return [Heading] | rr_RiskReturnHeading | Grizzly Short Fund |
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Objective [Heading] | rr_ObjectiveHeading | Investment Objective |
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Objective, Primary [Text Block] | rr_ObjectivePrimaryTextBlock | Grizzly Short Fund (GRZZX) seeks capital appreciation. |
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Expense [Heading] | rr_ExpenseHeading | Fund Fees and Expenses |
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Expense Narrative [Text Block] | rr_ExpenseNarrativeTextBlock | The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund. |
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Shareholder Fees Caption [Text] | rr_ShareholderFeesCaption | Shareholder Fees (fees paid directly from your investment) |
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Operating Expenses Caption [Text] | rr_OperatingExpensesCaption | Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) |
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Portfolio Turnover [Heading] | rr_PortfolioTurnoverHeading | Portfolio Turnover |
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Portfolio Turnover [Text Block] | rr_PortfolioTurnoverTextBlock | The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 0.00% of the average value of its portfolio. |
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Portfolio Turnover, Rate | rr_PortfolioTurnoverRate | none | ||||||||||||||||||||||
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] | rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees | Acquired Fund Fees and Expenses are not directly borne by the Fund, and they are not reflected in the Fund’s financial statements, with the result that the information presented in the expense table may differ from that presented in the financial highlights. |
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Expense Example [Heading] | rr_ExpenseExampleHeading | Example |
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Expense Example Narrative [Text Block] | rr_ExpenseExampleNarrativeTextBlock | This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.
The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of these periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. |
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Expense Example by, Year, Caption [Text] | rr_ExpenseExampleByYearCaption | Although your actual costs may be higher or lower, based on these assumptions your costs would be: |
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Strategy [Heading] | rr_StrategyHeading | Principal Investment Strategies of the Fund |
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Strategy Narrative [Text Block] | rr_StrategyNarrativeTextBlock | Grizzly Short Fund sells stocks short. Short selling involves the sale of borrowed securities. When the Fund sells a stock short, it incurs an obligation to replace the stock borrowed at whatever its price may be at the time it purchases the stock for delivery to the securities lender. The Fund will realize a gain if at that time the price of the stock is less than the price of the stock when it was sold short, and will realize a loss if at that time the price of the stock is greater than the price of the stock when it was sold short. The aggregate amount of its outstanding short positions typically will be approximately equal to, or slightly less than, its net assets. When the Fund’s outstanding short positions equal its net assets, it is “100% short.” The Fund utilizes a disciplined, unemotional, quantitative investment approach.
The Fund believes that in all market conditions there will exist some companies whose stocks are overvalued by the market and that capital appreciation can be realized by selling short those stocks. However, the best overall results typically will be achieved in declining stock markets. In rising stock markets the risk of loss is likely. The Fund generally will have outstanding approximately 60 to 100 stocks that it has sold short. The Fund may increase the number of stocks it sells short if market conditions warrant an increase. In determining which stocks to sell short, Leuthold Weeden Capital Management (referred to as the Adviser) calculates a quantitative index for each security that it follows that is designed to identify those securities that are most likely to decline in price or underperform the market (the “Vulnerability Index”). In calculating a Vulnerability Index, the Adviser considers twelve or more components. Some of the components include fundamental factors such as earnings growth or dividends, while other components consider market factors such as institutional trading activity or insider buying or selling. From time to time the Fund may sell short index-related securities. The Fund will do so to rapidly increase its short position.
The Fund also follows a disciplined approach in determining when to cover its short positions. The factors the Adviser considers in determining when to cover short positions include:
|
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Risk [Heading] | rr_RiskHeading | Principal Risks of Investing in the Fund |
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Risk Narrative [Text Block] | rr_RiskNarrativeTextBlock | Investors in the Fund may lose money. The principal risks of investing in the Fund, including the risks to which the Fund’s portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund’s performance, are summarized below.
Investors who wish to hedge some or all of their stock portfolios might find that investment goal consistent with an investment in the Fund.
However, because movements in the prices of the stocks the Fund has sold short are unlikely to correlate perfectly with the stocks in an investor’s portfolio, such an investor could incur both a loss on the investor’s stock portfolio and the investor’s investment in the Fund. |
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Risk Lose Money [Text] | rr_RiskLoseMoney | Investors in the Fund may lose money.
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Bar Chart and Performance Table [Heading] | rr_BarChartAndPerformanceTableHeading | Performance Information |
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Performance Narrative [Text Block] | rr_PerformanceNarrativeTextBlock | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund. Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future. |
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Performance Information Illustrates Variability of Returns [Text] | rr_PerformanceInformationIllustratesVariabilityOfReturns | The bar chart and table that follow provide some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how its average annual returns over various periods compare with those of an index that reflects a broad measure of market performance, as well as additional indices that reflect the performance of investments similar to those of the Fund.
|
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Performance Additional Market Index [Text] | rr_PerformanceAdditionalMarketIndex | We use the S&P Midcap 400 and Lipper Dedicated Short Bias Funds Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
|
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Performance Past Does Not Indicate Future [Text] | rr_PerformancePastDoesNotIndicateFuture | Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. It may perform better or worse in the future.
|
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Bar Chart [Heading] | rr_BarChartHeading | Grizzly Short Fund Total Return (per calendar year) |
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Bar Chart Closing [Text Block] | rr_BarChartClosingTextBlock | Note: During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 23.30% (quarter ended September 30,2011) and the lowest total return for a quarter was -26.55% (quarter ended June 30, 2009). |
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Highest Quarterly Return, Label | rr_HighestQuarterlyReturnLabel | highest total return
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Highest Quarterly Return, Date | rr_BarChartHighestQuarterlyReturnDate | Sep. 30, 2011 | ||||||||||||||||||||||
Highest Quarterly Return | rr_BarChartHighestQuarterlyReturn | 23.30% | ||||||||||||||||||||||
Lowest Quarterly Return, Label | rr_LowestQuarterlyReturnLabel | lowest total return
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Lowest Quarterly Return, Date | rr_BarChartLowestQuarterlyReturnDate | Jun. 30, 2009 | ||||||||||||||||||||||
Lowest Quarterly Return | rr_BarChartLowestQuarterlyReturn | (26.55%) | ||||||||||||||||||||||
Performance Table Uses Highest Federal Rate | rr_PerformanceTableUsesHighestFederalRate | The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes.
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Performance Table Not Relevant to Tax Deferred | rr_PerformanceTableNotRelevantToTaxDeferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
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Performance Table Explanation after Tax Higher | rr_PerformanceTableExplanationAfterTaxHigher | The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares.
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Performance Table Closing [Text Block] | rr_PerformanceTableClosingTextBlock | We use the S&P Midcap 400 and Lipper Dedicated Short Bias Funds Index because those indices compare the Fund’s performance with the returns of indices reflecting the performance of investments similar to those of the Fund.
The after-tax returns are calculated using the historical highest individual marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. The Fund’s return after taxes on distributions and sale of Fund shares may be higher than the other return figures for the same period due to a tax benefit of realizing a capital loss upon the sale of Fund shares. |
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Caption | rr_AverageAnnualReturnCaption | Average Annual Total Returns (for the periods ended December 31, 2017) |
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Grizzly Short Fund | S&P 500 | ||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | S&P 500
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 21.83% | ||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 15.79% | ||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 8.50% | ||||||||||||||||||||||
Grizzly Short Fund | S&P Midcap 400 | ||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | S&P Midcap 400
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | 16.24% | ||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | 15.01% | ||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | 9.97% | ||||||||||||||||||||||
Grizzly Short Fund | Lipper Dedicated Short Bias Funds Index | ||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Lipper Dedicated Short Bias Funds Index
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | (26.69%) | ||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | (22.84%) | ||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | (18.12%) | ||||||||||||||||||||||
Grizzly Short Fund | No Load | ||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||||||||
Maximum Sales Charge (Load) Imposed on Purchases | rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice | none | ||||||||||||||||||||||
Maximum Deferred Sales Charge (Load) | rr_MaximumDeferredSalesChargeOverOther | none | ||||||||||||||||||||||
Maximum Deferred Sales Charge (Load) Imposed on Reinvested Dividends and Distributions | rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther | none | ||||||||||||||||||||||
Redemption Fee (as a percentage of amount redeemed within 5 business days of purchase) | rr_RedemptionFeeOverRedemption | none | ||||||||||||||||||||||
Exchange Fee (as a percentage of amount exchanged within 5 business days of purchase) | rr_ExchangeFeeOverRedemption | none | ||||||||||||||||||||||
Management Fees | rr_ManagementFeesOverAssets | 1.25% | ||||||||||||||||||||||
Distribution (12b-1) Fees | rr_DistributionAndService12b1FeesOverAssets | none | ||||||||||||||||||||||
Service Fees | rr_Component1OtherExpensesOverAssets | 0.10% | ||||||||||||||||||||||
Dividends on Short Positions | rr_Component2OtherExpensesOverAssets | 1.09% | ||||||||||||||||||||||
All Remaining Other Expenses | rr_Component3OtherExpensesOverAssets | 0.19% | ||||||||||||||||||||||
Other Expenses | rr_OtherExpensesOverAssets | 1.53% | ||||||||||||||||||||||
Acquired Fund Fees and Expenses | rr_AcquiredFundFeesAndExpensesOverAssets | 0.15% | [1] | |||||||||||||||||||||
Total Annual Fund Operating Expenses | rr_ExpensesOverAssets | 2.78% | ||||||||||||||||||||||
Expense Example, with Redemption, 1 Year | rr_ExpenseExampleYear01 | $ 281 | ||||||||||||||||||||||
Expense Example, with Redemption, 3 Years | rr_ExpenseExampleYear03 | 862 | ||||||||||||||||||||||
Expense Example, with Redemption, 5 Years | rr_ExpenseExampleYear05 | 1,469 | ||||||||||||||||||||||
Expense Example, with Redemption, 10 Years | rr_ExpenseExampleYear10 | $ 3,109 | ||||||||||||||||||||||
Annual Return 2008 | rr_AnnualReturn2008 | 73.69% | ||||||||||||||||||||||
Annual Return 2009 | rr_AnnualReturn2009 | (47.17%) | ||||||||||||||||||||||
Annual Return 2010 | rr_AnnualReturn2010 | (23.19%) | ||||||||||||||||||||||
Annual Return 2011 | rr_AnnualReturn2011 | (1.92%) | ||||||||||||||||||||||
Annual Return 2012 | rr_AnnualReturn2012 | (21.13%) | ||||||||||||||||||||||
Annual Return 2013 | rr_AnnualReturn2013 | (26.61%) | ||||||||||||||||||||||
Annual Return 2014 | rr_AnnualReturn2014 | (11.04%) | ||||||||||||||||||||||
Annual Return 2015 | rr_AnnualReturn2015 | 3.81% | ||||||||||||||||||||||
Annual Return 2016 | rr_AnnualReturn2016 | (14.40%) | ||||||||||||||||||||||
Annual Return 2017 | rr_AnnualReturn2017 | (19.84%) | ||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return before taxes
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | (19.84%) | ||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | (14.20%) | ||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | (12.82%) | ||||||||||||||||||||||
Grizzly Short Fund | No Load | After Taxes on Distributions | ||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return after taxes on distributions
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | (19.84%) | ||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | (14.20%) | ||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | (12.97%) | ||||||||||||||||||||||
Grizzly Short Fund | No Load | After Taxes on Distributions and Sale of Fund Shares | ||||||||||||||||||||||||
Risk/Return: | rr_RiskReturnAbstract | |||||||||||||||||||||||
Label | rr_AverageAnnualReturnLabel | Return after taxes on distributions and sale of Fund shares
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Average Annual Returns, 1 Year | rr_AverageAnnualReturnYear01 | (11.23%) | ||||||||||||||||||||||
Average Annual Returns, 5 Years | rr_AverageAnnualReturnYear05 | (9.94%) | ||||||||||||||||||||||
Average Annual Returns, 10 Years | rr_AverageAnnualReturnYear10 | (7.86%) | ||||||||||||||||||||||
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Label | Element | Value |
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Risk/Return: | rr_RiskReturnAbstract | |
Prospectus Date | rr_ProspectusDate | Jan. 31, 2018 |