The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. The Fund is newly organized and, as of the date of the Prospectus, has not had any portfolio turnover.

Other Expenses, New Fund, Based on Estimates [Text]

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“Other Expenses” are estimated for the current fiscal year. Actual expenses may differ from estimates.

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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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 expenses are equal to net annual fund operating expenses for the first year and total annual fund operating expenses for the remaining years.

Expense Example by, Year, Caption [Text]

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Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Strategy [Heading]

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Principal Investment Strategies:

Strategy Narrative [Text Block]

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The Fund invests mainly in a limited number of large capitalization (namely, companies with more than $5 billion market capitalization at the time of initial purchase) value stocks of foreign companies (also referred to as non-U.S. companies). The Fund normally invests at least 65% of its total assets in the equity securities of non-U.S. companies. Non-U.S. companies are companies domiciled or headquartered outside of the United States, or whose primary business activities or principal trading markets are located outside of the United States. Sometimes these non-U.S. companies are traded in the U.S. on a national securities exchange, or through American Depositary Receipts (“ADRs”) or American Depositary Shares (“ADSs”). The Fund invests in common stocks and other equity securities, including preferred stocks, convertible preferred stocks, warrants, ADRs, ADSs and exchange-traded funds (“ETFs”) based on an international equity index. The Fund will generally not hedge its perceived foreign currency exposure back into the U.S. dollar and will be exposed to currency fluctuations.

The Fund may invest in ADRs through both sponsored and unsponsored arrangements. Issuers of the securities underlying sponsored ADRs, but not unsponsored ADRs, are contractually obligated to disclose material information in the United States. Therefore, the market value of unsponsored ADRs is less likely to reflect the effect of such information.

Unlike many international funds, the majority of the Fund’s investments will be in companies that have global operations rather than in companies whose business is limited to a particular country or geographic region. Because the Fund’s investments will be limited in number and investing in emerging market securities will not be a principal investment strategy, a substantial amount of the Fund’s assets (namely, more than 25% of its assets) may be in issuers located in a limited number of countries, and it is likely that the geographical and industry weightings of the Fund will differ significantly from popular international benchmarks. When determining whether an investment is in emerging market securities, the Fund views an investment in the securities of a company domiciled or headquartered in an emerging market, or whose primary business activities or principal trading markets are located in an emerging market as an investment in an emerging market.

The Fund uses fundamental analysis to look for stocks of good businesses that are selling at value prices in an effort to achieve above average performance with below average risk. The Fund believes good businesses have some or all of the following characteristics:


•	A strong, defendable market niche or products and services niche that is difficult to replicate;


•	A high degree of relative recurring revenue;


•	Modestly priced products or services;


•	Attractive return-on-investment economics (namely, where return on investment exceeds a company’s cost of capital over a three to five year period); and


•	Above-average growth or improving profitability prospects.

The Fund considers valuation:


•	On both an absolute and relative to the market basis.


•	Utilizing both historical and prospective analysis.

In reviewing companies, the Fund applies the characteristics identified above on a case-by-case basis as the order of importance varies depending on the type of business or industry and the company being reviewed.

The Fund is non-diversified which means that it may invest a significant portion of its assets in the securities of a single issuer or small number of issuers.

The Fund’s portfolio managers will generally sell a portfolio security when they believe:


•	The security has achieved its value potential.


•	Such sale is necessary for portfolio diversification.


•	Changing fundamentals signal a deteriorating value potential.


•	Other securities have a better value potential.

Risk [Heading]

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Principal Risks:

Risk Narrative [Text Block]

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There is a risk that you could lose all or a portion of your money on your investment in the Fund. This risk may increase during times of significant market volatility. The risks below could affect the value of your investment, and because of these risks the Fund is a suitable investment only for those investors who have long-term investment goals:

•

Stock Market Risk: The prices of the securities in which the Fund invests may decline for a number of reasons. The price declines of common stocks, in particular, may be steep, sudden and/or prolonged. Price changes may occur in the market as a whole, or they may occur in only a particular company, industry, sector, or geographical region of the market. A rise in protectionist trade policies, slowing global economic growth, risks associated with the United Kingdom’s vote to leave the European Union, the trade dispute between the United States and China, the risk of trade disputes with other countries, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time.

•

Non-Diversification Risk: Because the Fund is non-diversified (meaning that compared to diversified mutual funds, the Fund may invest a greater percentage of its assets in a more limited number of issuers), the Fund’s shares may be more susceptible to adverse changes in the value of a particular security than would be the shares of a diversified mutual fund. Thus, the Fund may be more volatile because each stock in which it invests will have greater impact on the Fund’s performance.


•	Value Investing Risk: The Fund’s portfolio managers may be wrong in their assessment of a company’s value and the stocks the Fund holds may not reach what the portfolio managers believe are their full values. From time to time “value” investing falls out of favor with investors. During these periods, the Fund’s relative performance may suffer.

•

Foreign Securities Risk: Stocks of non-U.S. companies (whether directly or in ADRs or ADSs) as an asset class may underperform stocks of U.S. companies, and such stocks may be less liquid and more volatile than stocks of U.S. companies. The costs associated with securities transactions are often higher in foreign countries than in the U.S. The U.S. dollar value of foreign securities traded in foreign currencies (and any dividends and interest earned) held by the Fund or by ETFs in which the Fund invests may be affected unfavorably by changes in foreign currency exchange rates. An increase in the U.S. dollar relative to these other currencies will adversely affect the Fund, as the positions are not hedged. Additionally, investments in foreign securities, whether or not publicly traded in the United States, may involve risks which are in addition to those inherent in domestic investments, including foreign political and economic risk not associated with domestic investments, meaning that political events, social and economic events and natural disasters occurring in a country where the Fund invests could cause the Fund’s investments in that country to experience gains or losses. Foreign companies may be subject to significantly higher levels of taxation than U.S. companies, including potentially confiscatory levels of taxation, thereby reducing the earnings potential of such foreign companies. Substantial withholding taxes may apply to distributions from foreign companies. Foreign companies may not be subject to the same regulatory requirements as those of U.S. companies and, as a consequence, there may be less publicly available information about such companies. Also, foreign companies may not be subject to uniform accounting, auditing and financial reporting standards and requirements comparable to those applicable to U.S. companies. Policy and legislative changes in foreign countries and other events affecting global markets, such as the United Kingdom’s expected exit from the European Union (or Brexit), may contribute to decreased liquidity and increased volatility in the financial markets. Foreign governments and foreign economies often are less stable than the U.S. Government and the U.S. economy. The Fund generally will not hedge its perceived foreign currency exposure back into the U.S. dollar and therefore the Fund is considered to be “currency unhedged.”


•	Geographic Concentration Risk: Concentrating investments in a limited number of countries or particular geographic regions makes the Fund more susceptible to adverse economic, political, social, regulatory and other developments in that country, countries or region. Additionally, the Fund’s performance may be more volatile when the Fund’s investments are less diversified across countries.


•	Large Capitalization Companies Risk: Large capitalization companies may grow more slowly than the overall economy and tend to go in and out of favor based on market and economic conditions, and the Fund may underperform investments that focus on small or medium capitalization companies.

•

Liquidity Risk: Liquidity risk is the risk, due to certain investments trading in lower volumes or to market and economic conditions, that the Fund may be unable to find a buyer for its investments when it seeks to sell them or to receive the price it expects based on the Fund’s valuation of the investments. Events that may lead to increased redemptions, such as market disruptions, may also negatively impact the liquidity of the Fund’s investments when it needs to dispose of them. If the Fund is forced to sell its investments at an unfavorable time and/or under adverse conditions in order to meet redemption requests, such sales could negatively affect the Fund. Liquidity issues may also make it difficult to value the Fund’s investments.

Risk Lose Money [Text]

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There is a risk that you could lose all or a portion of your money on your investment in the Fund.

Risk Nondiversified Status [Text]

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Because the Fund is non-diversified (meaning that compared to diversified mutual funds, the Fund may invest a greater percentage of its assets in a more limited number of issuers), the Fund’s shares may be more susceptible to adverse changes in the value of a particular security than would be the shares of a diversified mutual fund. Thus, the Fund may be more volatile because each stock in which it invests will have greater impact on the Fund’s performance.

Bar Chart and Performance Table [Heading]

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Performance:

Performance Narrative [Text Block]

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Performance information for the Fund will be provided once it has annual returns for a full calendar year. 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 at https://www.fmimgt.com/current-performance/.

Performance One Year or Less [Text]

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Performance information for the Fund will be provided once it has annual returns for a full calendar year.

Performance Availability Website Address [Text]

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https://www.fmimgt.com/current-performance/

Performance Past Does Not Indicate Future [Text]

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Please remember that the Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance.

FMI International Fund II - Currency Unhedged | Investor Class

Prospectus [Line Items]

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Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

none

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

none

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Component1 Other Expenses

rr_Component1OtherExpensesOverAssets

0.15%

Component2 Other Expenses

rr_Component2OtherExpensesOverAssets

1.05%

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

1.20%

^[1]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.95%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(1.05%)

^[2]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.90%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 92

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

$ 468

FMI International Fund II - Currency Unhedged | Institutional Class

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

FMIFX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

none

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

none

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Component1 Other Expenses

rr_Component1OtherExpensesOverAssets

none

Component2 Other Expenses

rr_Component2OtherExpensesOverAssets

1.05%

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

1.05%

^[1]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.80%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.90%)

^[2]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.90%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 92

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

$ 447

[1]

“Other Expenses” are estimated for the current fiscal year. Actual expenses may differ from estimates.

[2]

The Fund’s investment adviser has contractually agreed in the investment advisory agreement and operating expenses limitation agreement to waive its advisory fee to the extent necessary to ensure that net expenses (excluding federal, state and local taxes, interest, brokerage commissions and extraordinary items) do not exceed 1.75% of the average daily net assets of the Investor Class shares of the Fund and 1.65% of the average daily net assets of the Institutional Class shares of the Fund. The investment advisory agreement may be terminated by the Fund or the Fund’s investment adviser for any reason upon sixty days prior written notice, but is expected to continue indefinitely, and the operating expenses limitation agreement may only be terminated by the Fund’s Board of Directors. In addition to the reimbursement required under the investment advisory agreement, the investment adviser has voluntarily agreed to reimburse the Fund to the extent necessary to ensure that total annual fund operating expenses do not exceed 0.90% at least through January 31, 2021.