485BPOS

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 8, 2013

Securities Act Registration No. 333-12745

Investment Company Act Reg. No. 811-07831

SECURITIES AND EXCHANGE COMMISSION

Washington D.C.  20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933		[	X	]
Pre-Effective Amendment No.		[		]
Post-Effective Amendment No.	24	[	X	]

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940		[	X	]
Amendment No.	26	[	X	]

(Check appropriate box or boxes.)

FMI FUNDS, INC. (Exact Name of Registrant as Specified in Charter)
100 East Wisconsin Avenue, Suite 2200
Milwaukee, Wisconsin	53202
(Address of Principal Executive Offices)	(Zip Code)
(414)  226-4555 (Registrant’s Telephone Number, including Area Code)
Ted. D. Kellner	Copy to:
Fiduciary Management, Inc.	Peter Fetzer
100 East Wisconsin Avenue, Suite 2200	Foley & Lardner LLP
Milwaukee, WI  53202	777 East Wisconsin Avenue
(Name and Address of Agent for Service)	Milwaukee, Wisconsin  53202

Approximate Date of Proposed Public Offering:  As soon as practicable after the Registration Statement becomes effective.

It is proposed that this filing will become effective (check appropriate box)

[	X	]	immediately upon filing pursuant to paragraph (b)
[		]	On  (date) pursuant to paragraph (b)
[		]	60 days after filing pursuant to paragraph (a)(1)
[		]	on (date) pursuant to paragraph (a)(1)
[		]	75 days after filing pursuant to paragraph (a)(2)
[		]	on (date) pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

[ ] This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

Explanatory Note: This Post-Effective Amendment (“PEA”) No. 24 to the Trust’s Registration Statement on Form N-1A hereby incorporates Parts A, B and C from the Trust’s PEA No. 23 on Form N-1A filed January 29, 2013.  This PEA No. 24 is filed for the sole purpose of submitting the XBRL exhibit for the risk/return summary first provided in PEA No. 23 to the Trust’s Registration Statement.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, Registrant certifies that it meets all of the requirements for effectiveness of this registration statement under Rule 485(b) under the Securities Act and has duly caused this Amended Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Milwaukee and State of Wisconsin on the 7th day of February, 2013.

FMI FUNDS, INC.

(Registrant)

By:  /s/ Ted D. Kellner                       

 Ted D. Kellner, President

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the date(s) indicated.

Name	Title	Date
/s/ Ted D. Kellner	President, Treasurer and Director	February 7, 2013
Ted D. Kellner
/s/ Barry K. Allen	Director	February 7, 2013
Barry K. Allen
/s/ Robert C. Arzbaecher	Director	February 7, 2013
Robert C. Arzbaecher
/s/ Patrick J. English	Director	February 7, 2013
Patrick J. English
/s/ Gordon H. Gunnlaugsson	Director	February 7, 2013
Gordon H. Gunnlaugsson
/s/ Richard E. Lane	Director	February 7, 2013
Richard E. Lane
/s/ Paul S. Shain	Director	February 7, 2013
Paul S. Shain

INDEX TO EXHIBITS

Exhibit	Exhibit No.
Instance Document	EX-101.INS
Schema Document	EX-101.SCH
Calculation Linkbase Document	EX-101.CAL
Definition Linkbase Document	EX-101.DEF
Label Linkbase Document	EX-101.LAB
Presentation Linkbase Document	EX-101.PRE

XML

FMI LARGE CAP FUND | FMI LARGE CAP FUND

FMI LARGE CAP FUND

Investment Objective:

  FMI Large Cap Fund seeks long-term capital appreciation.

Fees and Expenses of the Fund: The following table 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)

Shareholder Fees (USD $)	FMI LARGE CAP FUND
Maximum Sales Charge (Load) Imposed on Purchases	none
Maximum Deferred Sales Charge (Load)	none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends and Distributions	none
Redemption Fee (transfer agent charge of $15 for each wire redemption)	none
Exchange Fee	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	FMI LARGE CAP FUND
Management Fees	0.75%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.21%
Total Annual Fund Operating Expenses	0.96%

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:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
FMI LARGE CAP FUND	98	306	531	1,178

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 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 21% of the average value of its portfolio.

Principal Investment Strategies:

  The Fund invests mainly in a limited number of large capitalization (namely, companies with more than $5 billion market capitalization) value stocks of companies listed or traded on a national securities exchange or on a national securities association, including foreign securities traded on a national securities exchange or on a national securities association.  In addition, the Fund invests in American Depositary Receipts (“ADRs”), which are dollar-denominated securities of foreign issuers traded in the U.S.

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.

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)

• 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’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

Principal Risks:

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, or sector of the market.

• Medium Capitalization Companies Risk: Medium capitalization companies tend to be more susceptible to adverse business or economic events than large capitalization companies, and there is a risk that the securities of medium capitalization companies may have limited liquidity and greater price volatility than securities of large capitalization companies.

• 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.

• 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 particular issuer), 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 is more sensitive to economic, business and political changes which may result in greater price fluctuations of the Fund’s shares.

• 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) 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 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, if the positions are not fully 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. Foreign companies may not be subject to the same regulatory requirements 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.  Foreign governments and foreign economies often are less stable than the U.S. Government and the U.S. economy.

Performance:

The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare to the performance of the Standard & Poor’s Composite Index of 500 Stocks (“S&P 500”).  For additional information on this index, please see “Index Descriptions” in this Prospectus.  The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.  Updated performance information is available on the Fund’s website at http://www.fmifunds.com.

FMI Large Cap Fund (Annual total return as of 12/31)

During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 15.06% (quarter ended June 30, 2003) and the lowest total return for a quarter was -18.29% (quarter ended December 31, 2008).

Average Annual Total Returns (for the periods ended December 31, 2012)

After-tax returns are calculated using the historical highest individual federal 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.  The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Average Annual Returns	1 Year	5 Years	10 Years
FMI LARGE CAP FUND	14.86%	4.25%	9.69%
FMI LARGE CAP FUND After Taxes on Distributions	14.45%	3.95%	9.22%
FMI LARGE CAP FUND After Taxes on Distributions and Sales	10.19%	3.61%	8.46%
FMI LARGE CAP FUND S&P 500 Index	16.00%	1.66%	7.10%

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

FMI International Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective:

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

  FMI International Fund seeks long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund: The following table 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)

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)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

2014-01-31

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

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 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 20% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

20.00%

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

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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund invests mainly in a limited number of large capitalization (namely, companies with more than $5 billion market capitalization) 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 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)

• 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’s adviser will generally sell a portfolio security when the adviser believes:

• 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]

rr_RiskHeading

Principal Risks:

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

  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, or sector of the market.

• 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 particular issuer), 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 is more sensitive to economic, business and political changes which may result in greater price fluctuations of the Fund’s shares.

• 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) 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 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, if the positions are not fully 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. Foreign companies may not be subject to the same regulatory requirements 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.  Foreign governments and foreign economies often are less stable than the U.S. Government and the U.S. economy.

• 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.

• Currency Hedging Risk:  The Fund may hedge a significant portion of its foreign stock investments against foreign currency changes in an effort to have its returns more closely reflect the market performance of its investments, rather than the value of the currency.  To the extent the Fund hedges portions of its portfolio, its relative performance may differ from that of unhedged portfolios or indices. There is no guarantee the hedges will fully protect against adverse currency movements.

• 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.

Risk Lose Money [Text]

rr_RiskLoseMoney

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]

rr_RiskNondiversifiedStatus

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 particular issuer), 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 is more sensitive to economic, business and political changes which may result in greater price fluctuations of the Fund's shares.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance:

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

  The following bar chart and table provide some indication of the risks of investing in the Fund by showing how the Fund’s performance from year to year and how the Fund's average annual returns over time compare to the performance of the Morgan Stanley Capital International Europe, Australasia and Far East Index (“MSCI EAFE”).  For additional information on this index, please see “Index Descriptions” in this Prospectus.  The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.  Updated performance information is available on the Fund’s website at http://www.fmifunds.com.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following bar chart and table provide some indication of the risks of investing in the Fund by showing how the Fund's performance from year to year and how the Fund's average annual returns over time compare to the performance of the Morgan Stanley Capital International Europe, Australasia and Far East Index ("MSCI EAFE").

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

http://www.fmifunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

FMI International Fund (Annual total return as of 12/31)

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the period shown on the bar chart, the Fund’s highest total return for a quarter was 9.80% (quarter ended March 31, 2012 ) and the lowest total return for a quarter was -12.16% (quarter ended September 30, 2011).  The inception date of the Fund was December 31, 2010.

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest total return for a quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

9.80%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest total return for a quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2010

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(12.16%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

reflects no deduction for fees, expenses or taxes

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal 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.  The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Caption

rr_AverageAnnualReturnCaption

Average Annual Total Returns (for the period ended December 31, 2012)

MSCI EAFE (LOC)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

17.31%

Since Inception

rr_AverageAnnualReturnSinceInception

1.52%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2010

MSCI EAFE (USD)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

17.32%

Since Inception

rr_AverageAnnualReturnSinceInception

1.53%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2010

FMI International Fund

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Sales Charge (Load) Imposed on Reinvested Dividends and Distributions

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption Fee (transfer agent charge of $15 for each wire redemption)

rr_RedemptionFeeOverRedemption

none

Exchange Fee

rr_ExchangeFee

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.70%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.45%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.45%)

^[2]

Net Annual Fund Operating Expenses

rr_NetExpensesOverAssets

1.00%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

102

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

414

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

749

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,697

Annual Return 2011

rr_AnnualReturn2011

(1.77%)

Annual Return 2012

rr_AnnualReturn2012

18.18%

1 Year

rr_AverageAnnualReturnYear01

18.18%

Since Inception

rr_AverageAnnualReturnSinceInception

7.74%

^[1]

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 2010

FMI International Fund | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

18.08%

Since Inception

rr_AverageAnnualReturnSinceInception

7.67%

FMI International Fund | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.30%

Since Inception

rr_AverageAnnualReturnSinceInception

6.71%

^[1]

[1] Inception December 31, 2010.

[2] The Fund's investment adviser has contractually agreed in the investment advisory 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 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. In addition to the reimbursement required under the investment advisory agreement, the investment adviser has agreed to reimburse the Fund to the extent necessary to ensure that total annual fund operating expenses do not exceed 1.00% at least through January 31, 2014 .

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Prospectus Date	rr_ProspectusDate	Jan. 31, 2013

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

FMI FOCUS FUND

Objective [Heading]

rr_ObjectiveHeading

Investment Objective:

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

  FMI Focus Fund (the “Fund”) seeks capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund: The following table 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)

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)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

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 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 55% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

55.00%

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.

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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund may invest in stocks of companies of all sizes, but primarily invests in small- to medium-capitalization (namely, less than $5 billion market capitalization) United States companies, that have substantial capital appreciation potential.  Many of these companies have little or no following by the major stock brokerage firms.  The Fund looks for stocks of businesses that are selling at what it believes are substantial discounts to prices that accurately reflect their future earnings prospects.  The Fund takes a “focused” approach to investing, meaning the Fund conducts extensive research (namely, focuses) on each prospective investment before purchasing.

The Fund’s portfolio managers actively trade the Fund’s portfolio.  The Fund’s portfolio managers may also use the following investment techniques:

• Effect “short sales” of a security when they think it will decline in value.

• Purchase securities with borrowed funds.

• Purchase put and call options and write call options on securities and stock indexes.

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’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]

rr_RiskHeading

Principal Risks:

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

  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 and a high tolerance for risk:

• 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, or sector of the market.

• Medium Capitalization Companies Risk:  Medium capitalization companies tend to be more susceptible to adverse business or economic events than large capitalization companies, and there is a risk that the securities of medium capitalization companies may have limited liquidity and greater price volatility than securities of large capitalization companies.

• Small Capitalization Companies Risk:  Small capitalization companies typically have relatively lower revenues, limited product lines and lack of management depth, and may have a smaller share of the market for their products or services, than large and medium capitalization companies.  There is a risk that the securities of small capitalization companies may have limited liquidity and greater price volatility than securities of large and medium capitalization companies, which can negatively affect the Fund’s ability to sell these securities at quoted market prices.  Finally, there are periods when investing in small capitalization company stocks falls out of favor with investors and these stocks may underperform.

• 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.

• Leverage Risk:  When our portfolio managers purchase securities with borrowed funds, they engage in a speculative investment practice called “leverage.” When the Fund engages in “leverage,” it has the potential to incur losses greater than if it had not engaged in leverage.

• Options Writing and Selling Risk:  If the Fund purchases an option and the price of the underlying stock or index moves in the wrong direction, the Fund will lose most or all of the amount the Fund paid for the option, plus commission costs. Similarly, the Fund likely will lose money if the underlying stock or index of a call option it has written increases in value. It is possible that there may be times when a market for the Fund’s outstanding options does not exist.

• Short Sales Risk:  The risk of incurring losses due to an appreciation in value of a security that was sold short.  Losses may incur if a short position is closed out earlier than the Fund had intended.  The potential loss is unlimited.

Risk Lose Money [Text]

rr_RiskLoseMoney

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

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance:

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

  The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare to the performance of the Russell 2000 Index and the Russell 2000 Growth Index.  For additional information on these indexes, please see “Index Descriptions” in this Prospectus.  The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.  Updated performance information is available on the Fund’s website at http://www.fmifunds.com.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and how the Fund's average annual returns over time compare to the performance of the Russell 2000 Index and the Russell 2000 Growth Index.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

http://www.fmifunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

FMI Focus Fund (Annual total return as of 12/31)

Bar Chart Footnotes [Text Block]

rr_BarChartFootnotesTextBlock

During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 25.25% (quarter ended September 30, 2009) and the lowest total return for a quarter was -23.77% (quarter ended December 31, 2008).

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest total return for a quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

25.25%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest total return for a quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(23.77%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

reflects no deduction for fees, expenses or taxes

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal 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.  The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Caption

rr_AverageAnnualReturnCaption

Average Annual Total Returns (for the periods ended December 31, 2012 )

Russell 2000 Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

16.35%

5 Years

rr_AverageAnnualReturnYear05

3.56%

10 Years

rr_AverageAnnualReturnYear10

9.72%

Russell 2000 Growth Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

14.59%

5 Years

rr_AverageAnnualReturnYear05

3.49%

10 Years

rr_AverageAnnualReturnYear10

9.80%

FMI FOCUS FUND

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Sales Charge (Load) Imposed on Reinvested Dividends and Distributions

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption Fee (transfer agent charge of $15 for each wire redemption)

rr_RedemptionFeeOverRedemption

none

Exchange Fee

rr_ExchangeFee

none

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.26%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.26%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

128

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

400

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

692

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,523

Annual Return 2003

rr_AnnualReturn2003

48.11%

Annual Return 2004

rr_AnnualReturn2004

7.05%

Annual Return 2005

rr_AnnualReturn2005

4.93%

Annual Return 2006

rr_AnnualReturn2006

12.78%

Annual Return 2007

rr_AnnualReturn2007

3.38%

Annual Return 2008

rr_AnnualReturn2008

(30.47%)

Annual Return 2009

rr_AnnualReturn2009

40.16%

Annual Return 2010

rr_AnnualReturn2010

29.55%

Annual Return 2011

rr_AnnualReturn2011

(3.37%)

Annual Return 2012

rr_AnnualReturn2012

13.33%

1 Year

rr_AverageAnnualReturnYear01

13.33%

5 Years

rr_AverageAnnualReturnYear05

6.69%

10 Years

rr_AverageAnnualReturnYear10

10.37%

FMI FOCUS FUND | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.85%

5 Years

rr_AverageAnnualReturnYear05

5.74%

10 Years

rr_AverageAnnualReturnYear10

9.17%

FMI FOCUS FUND | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

9.25%

5 Years

rr_AverageAnnualReturnYear05

5.46%

10 Years

rr_AverageAnnualReturnYear10

8.79%

XML

FMI FOCUS FUND | FMI FOCUS FUND

FMI FOCUS FUND

Investment Objective:

  FMI Focus Fund (the “Fund”) seeks capital appreciation.

Fees and Expenses of the Fund: The following table 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)

Shareholder Fees (USD $)	FMI FOCUS FUND
Maximum Sales Charge (Load) Imposed on Purchases	none
Maximum Deferred Sales Charge (Load)	none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends and Distributions	none
Redemption Fee (transfer agent charge of $15 for each wire redemption)	none
Exchange Fee	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	FMI FOCUS FUND
Management Fees	1.00%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.26%
Total Annual Fund Operating Expenses	1.26%

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:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
FMI FOCUS FUND	128	400	692	1,523

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 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 55% of the average value of its portfolio.

Principal Investment Strategies:

The Fund may invest in stocks of companies of all sizes, but primarily invests in small- to medium-capitalization (namely, less than $5 billion market capitalization) United States companies, that have substantial capital appreciation potential.  Many of these companies have little or no following by the major stock brokerage firms.  The Fund looks for stocks of businesses that are selling at what it believes are substantial discounts to prices that accurately reflect their future earnings prospects.  The Fund takes a “focused” approach to investing, meaning the Fund conducts extensive research (namely, focuses) on each prospective investment before purchasing.

The Fund’s portfolio managers actively trade the Fund’s portfolio.  The Fund’s portfolio managers may also use the following investment techniques:

• Effect “short sales” of a security when they think it will decline in value.

• Purchase securities with borrowed funds.

• Purchase put and call options and write call options on securities and stock indexes.

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’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.

Principal Risks:

  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 and a high tolerance for risk:

• 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, or sector of the market.

• Medium Capitalization Companies Risk:  Medium capitalization companies tend to be more susceptible to adverse business or economic events than large capitalization companies, and there is a risk that the securities of medium capitalization companies may have limited liquidity and greater price volatility than securities of large capitalization companies.

• Small Capitalization Companies Risk:  Small capitalization companies typically have relatively lower revenues, limited product lines and lack of management depth, and may have a smaller share of the market for their products or services, than large and medium capitalization companies.  There is a risk that the securities of small capitalization companies may have limited liquidity and greater price volatility than securities of large and medium capitalization companies, which can negatively affect the Fund’s ability to sell these securities at quoted market prices.  Finally, there are periods when investing in small capitalization company stocks falls out of favor with investors and these stocks may underperform.

• 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.

• Leverage Risk:  When our portfolio managers purchase securities with borrowed funds, they engage in a speculative investment practice called “leverage.” When the Fund engages in “leverage,” it has the potential to incur losses greater than if it had not engaged in leverage.

• Options Writing and Selling Risk:  If the Fund purchases an option and the price of the underlying stock or index moves in the wrong direction, the Fund will lose most or all of the amount the Fund paid for the option, plus commission costs. Similarly, the Fund likely will lose money if the underlying stock or index of a call option it has written increases in value. It is possible that there may be times when a market for the Fund’s outstanding options does not exist.

• Short Sales Risk:  The risk of incurring losses due to an appreciation in value of a security that was sold short.  Losses may incur if a short position is closed out earlier than the Fund had intended.  The potential loss is unlimited.

Performance:

  The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare to the performance of the Russell 2000 Index and the Russell 2000 Growth Index.  For additional information on these indexes, please see “Index Descriptions” in this Prospectus.  The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.  Updated performance information is available on the Fund’s website at http://www.fmifunds.com.

FMI Focus Fund (Annual total return as of 12/31)

During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 25.25% (quarter ended September 30, 2009) and the lowest total return for a quarter was -23.77% (quarter ended December 31, 2008).

Average Annual Total Returns (for the periods ended December 31, 2012 )

After-tax returns are calculated using the historical highest individual federal 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.  The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Average Annual Returns	1 Year	5 Years	10 Years
FMI FOCUS FUND	13.33%	6.69%	10.37%
FMI FOCUS FUND After Taxes on Distributions	12.85%	5.74%	9.17%
FMI FOCUS FUND After Taxes on Distributions and Sales	9.25%	5.46%	8.79%
FMI FOCUS FUND Russell 2000 Index	16.35%	3.56%	9.72%
FMI FOCUS FUND Russell 2000 Growth Index	14.59%	3.49%	9.80%

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

FMI COMMON STOCK FUND

Objective [Heading]

rr_ObjectiveHeading

Investment Objective:

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

  FMI Common Stock Fund seeks long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund: The following table 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)

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)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

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 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 43% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

43.00%

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.

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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

  The Fund invests mainly in small- to medium-capitalization companies (namely, companies with less than $5 billion market capitalization) value stocks of companies listed or traded on a national securities exchange or on a national securities association.  Under normal market conditions, the Fund invests 80% of its net assets in common stocks, including for purposes of this limitation common stocks of foreign companies traded as American Depositary Receipts (“ADRs”).

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.

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)

• 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’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]

rr_RiskHeading

Principal Risks:

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

  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, or sector of the market.

• Medium Capitalization Companies Risk:  Medium capitalization companies tend to be more susceptible to adverse business or economic events than large capitalization companies, and there is a risk that the securities of medium capitalization companies may have limited liquidity and greater price volatility than securities of large capitalization companies.

• Small Capitalization Companies Risk:  Small capitalization companies typically have relatively lower revenues, limited product lines and lack of management depth, and may have a smaller share of the market for their products or services, than large and medium capitalization companies.  There is a risk that the securities of small capitalization companies may have limited liquidity and greater price volatility than securities of large and medium capitalization companies, which can negatively affect the Fund’s ability to sell these securities at quoted market prices.  Finally, there are periods when investing in small capitalization company stocks falls out of favor with investors and these stocks may underperform.

• 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) 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 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 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, if the positions are not fully 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. Foreign companies may not be subject to the same regulatory requirements 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.  Foreign governments and foreign economies often are less stable than the U.S. Government and the U.S. economy.

Risk Lose Money [Text]

rr_RiskLoseMoney

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

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance:

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

  The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare to the performance of the Russell 2000 Index.  For additional information on this index, please see “Index Descriptions” in this Prospectus.  The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.  Updated performance information is available on the Fund’s website at http://www.fmifunds.com.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and how the Fund's average annual returns over time compare to the performance of the Russell 2000 Index.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

http://www.fmifunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

FMI Common Stock Fund (Annual total return as of 12/31)

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 21.52% (quarter ended June 30, 2009) and the lowest total return for a quarter was -19.88% (quarter ended December 31, 2008).

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest total return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

21.52%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest total return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(19.88%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

reflects no deduction for fees, expenses or taxes

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In certain cases, the figure representing "Return after taxes on distributions and sale of Fund shares" may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal 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.  In certain cases, the figure representing “Return after taxes on distributions and sale of Fund shares” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.  The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Caption

rr_AverageAnnualReturnCaption

Average Annual Total Returns (for the periods ended December 31, 2012)

Russell 2000 Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

16.35%

5 Years

rr_AverageAnnualReturnYear05

3.56%

10 Years

rr_AverageAnnualReturnYear10

9.72%

FMI COMMON STOCK FUND

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Sales Charge (Load) Imposed on Reinvested Dividends and Distributions

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption Fee (transfer agent charge of $15 for each wire redemption)

rr_RedemptionFeeOverRedemption

none

Exchange Fee

rr_ExchangeFee

none

Management Fees

rr_ManagementFeesOverAssets

1.00%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.20%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.20%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

122

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

381

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

660

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,455

Annual Return 2003

rr_AnnualReturn2003

24.08%

Annual Return 2004

rr_AnnualReturn2004

18.79%

Annual Return 2005

rr_AnnualReturn2005

9.45%

Annual Return 2006

rr_AnnualReturn2006

17.14%

Annual Return 2007

rr_AnnualReturn2007

(1.97%)

Annual Return 2008

rr_AnnualReturn2008

(20.41%)

Annual Return 2009

rr_AnnualReturn2009

33.89%

Annual Return 2010

rr_AnnualReturn2010

22.16%

Annual Return 2011

rr_AnnualReturn2011

4.52%

Annual Return 2012

rr_AnnualReturn2012

10.16%

1 Year

rr_AverageAnnualReturnYear01

10.16%

5 Years

rr_AverageAnnualReturnYear05

8.43%

10 Years

rr_AverageAnnualReturnYear10

10.75%

FMI COMMON STOCK FUND | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

8.55%

5 Years

rr_AverageAnnualReturnYear05

7.46%

10 Years

rr_AverageAnnualReturnYear10

9.35%

FMI COMMON STOCK FUND | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

8.63%

5 Years

rr_AverageAnnualReturnYear05

7.10%

10 Years

rr_AverageAnnualReturnYear10

9.09%

XML

Document and Entity Information	0 Months Ended
	Sep. 30, 2012
Risk/Return:
Document Type	485BPOS
Document Period End Date	Sep. 30, 2012
Registrant Name	FMI FUNDS INC
Central Index Key	0001023391
Amendment Flag	false
Document Creation Date	Jan. 29, 2013
Document Effective Date	Jan. 31, 2013
Prospectus Date	Jan. 31, 2013
FMI FOCUS FUND | FMI FOCUS FUND | FMI FOCUS FUND
Risk/Return:
Trading Symbol	FMIOX
FMI LARGE CAP FUND | FMI LARGE CAP FUND | FMI LARGE CAP FUND
Risk/Return:
Trading Symbol	FMIHX
FMI COMMON STOCK FUND | FMI COMMON STOCK FUND | FMI COMMON STOCK FUND
Risk/Return:
Trading Symbol	FMIMX
FMI International Fund | FMI International Fund | FMI International Fund
Risk/Return:
Trading Symbol	FMIJX

XML

FMI International Fund | FMI International Fund

FMI International Fund

Investment Objective:

  FMI International Fund seeks long-term capital appreciation.

Fees and Expenses of the Fund: The following table 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)

Shareholder Fees (USD $)	FMI International Fund
Maximum Sales Charge (Load) Imposed on Purchases	none
Maximum Deferred Sales Charge (Load)	none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends and Distributions	none
Redemption Fee (transfer agent charge of $15 for each wire redemption)	none
Exchange Fee	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		FMI International Fund
Management Fees		0.75%
Distribution and/or Service (12b-1) Fees		none
Other Expenses		0.70%
Total Annual Fund Operating Expenses		1.45%
Fee Waiver and/or Expense Reimbursement	[1]	(0.45%)
Net Annual Fund Operating Expenses		1.00%

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

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

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
FMI International Fund	102	414	749	1,697

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 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 20% of the average value of its portfolio.

Principal Investment Strategies:

The Fund invests mainly in a limited number of large capitalization (namely, companies with more than $5 billion market capitalization) 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 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)

• 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’s adviser will generally sell a portfolio security when the adviser believes:

• 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

Principal Risks:

  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, or sector of the market.

• 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 particular issuer), 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 is more sensitive to economic, business and political changes which may result in greater price fluctuations of the Fund’s shares.

• 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) 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 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, if the positions are not fully 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. Foreign companies may not be subject to the same regulatory requirements 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.  Foreign governments and foreign economies often are less stable than the U.S. Government and the U.S. economy.

• 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.

• Currency Hedging Risk:  The Fund may hedge a significant portion of its foreign stock investments against foreign currency changes in an effort to have its returns more closely reflect the market performance of its investments, rather than the value of the currency.  To the extent the Fund hedges portions of its portfolio, its relative performance may differ from that of unhedged portfolios or indices. There is no guarantee the hedges will fully protect against adverse currency movements.

• 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.

Performance:

  The following bar chart and table provide some indication of the risks of investing in the Fund by showing how the Fund’s performance from year to year and how the Fund's average annual returns over time compare to the performance of the Morgan Stanley Capital International Europe, Australasia and Far East Index (“MSCI EAFE”).  For additional information on this index, please see “Index Descriptions” in this Prospectus.  The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.  Updated performance information is available on the Fund’s website at http://www.fmifunds.com.

FMI International Fund (Annual total return as of 12/31)

During the period shown on the bar chart, the Fund’s highest total return for a quarter was 9.80% (quarter ended March 31, 2012 ) and the lowest total return for a quarter was -12.16% (quarter ended September 30, 2011).  The inception date of the Fund was December 31, 2010.

Average Annual Total Returns (for the period ended December 31, 2012)

After-tax returns are calculated using the historical highest individual federal 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.  The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Average Annual Returns	1 Year	Since Inception		Inception Date
FMI International Fund	18.18%	7.74%	[1]	Dec. 31, 2010
FMI International Fund After Taxes on Distributions	18.08%	7.67%
FMI International Fund After Taxes on Distributions and Sales	12.30%	6.71%	[1]
FMI International Fund MSCI EAFE (LOC)	17.31%	1.52%	[1]	Dec. 31, 2010
FMI International Fund MSCI EAFE (USD)	17.32%	1.53%	[1]	Dec. 31, 2010

[1] The Fund's investment adviser has contractually agreed in the investment advisory 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 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. In addition to the reimbursement required under the investment advisory agreement, the investment adviser has agreed to reimburse the Fund to the extent necessary to ensure that total annual fund operating expenses do not exceed 1.00% at least through January 31, 2014 .

[1] Inception December 31, 2010.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

FMI LARGE CAP FUND

Objective [Heading]

rr_ObjectiveHeading

Investment Objective:

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

  FMI Large Cap Fund seeks long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund: The following table 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)

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)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

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 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 21% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

21.00%

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.

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:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies:

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

  The Fund invests mainly in a limited number of large capitalization (namely, companies with more than $5 billion market capitalization) value stocks of companies listed or traded on a national securities exchange or on a national securities association, including foreign securities traded on a national securities exchange or on a national securities association.  In addition, the Fund invests in American Depositary Receipts (“ADRs”), which are dollar-denominated securities of foreign issuers traded in the U.S.

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.

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)

• 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’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]

rr_RiskHeading

Principal Risks:

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

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, or sector of the market.

• Medium Capitalization Companies Risk: Medium capitalization companies tend to be more susceptible to adverse business or economic events than large capitalization companies, and there is a risk that the securities of medium capitalization companies may have limited liquidity and greater price volatility than securities of large capitalization companies.

• 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.

• 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 particular issuer), 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 is more sensitive to economic, business and political changes which may result in greater price fluctuations of the Fund’s shares.

• 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) 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 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, if the positions are not fully 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. Foreign companies may not be subject to the same regulatory requirements 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.  Foreign governments and foreign economies often are less stable than the U.S. Government and the U.S. economy.

Risk Lose Money [Text]

rr_RiskLoseMoney

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]

rr_RiskNondiversifiedStatus

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 particular issuer), 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 is more sensitive to economic, business and political changes which may result in greater price fluctuations of the Fund's shares.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance:

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare to the performance of the Standard & Poor’s Composite Index of 500 Stocks (“S&P 500”).  For additional information on this index, please see “Index Descriptions” in this Prospectus.  The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.  Updated performance information is available on the Fund’s website at http://www.fmifunds.com.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and how the Fund's average annual returns over time compare to the performance of the Standard & Poor's Composite Index of 500 Stocks ("S&P 500").

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

http://www.fmifunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

FMI Large Cap Fund (Annual total return as of 12/31)

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 15.06% (quarter ended June 30, 2003) and the lowest total return for a quarter was -18.29% (quarter ended December 31, 2008).

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest total return for a quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2003

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

15.06%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest total return for a quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(18.29%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

reflects no deduction for fees, expenses or taxes

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

After-tax returns are calculated using the historical highest individual federal 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.  The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Caption

rr_AverageAnnualReturnCaption

Average Annual Total Returns (for the periods ended December 31, 2012)

S&P 500 Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

16.00%

5 Years

rr_AverageAnnualReturnYear05

1.66%

10 Years

rr_AverageAnnualReturnYear10

7.10%

FMI LARGE CAP FUND

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Maximum Sales Charge (Load) Imposed on Reinvested Dividends and Distributions

rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther

none

Redemption Fee (transfer agent charge of $15 for each wire redemption)

rr_RedemptionFeeOverRedemption

none

Exchange Fee

rr_ExchangeFee

none

Management Fees

rr_ManagementFeesOverAssets

0.75%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.96%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

98

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

306

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

531

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,178

Annual Return 2003

rr_AnnualReturn2003

31.55%

Annual Return 2004

rr_AnnualReturn2004

17.52%

Annual Return 2005

rr_AnnualReturn2005

9.12%

Annual Return 2006

rr_AnnualReturn2006

16.68%

Annual Return 2007

rr_AnnualReturn2007

4.11%

Annual Return 2008

rr_AnnualReturn2008

(26.91%)

Annual Return 2009

rr_AnnualReturn2009

29.68%

Annual Return 2010

rr_AnnualReturn2010

11.41%

Annual Return 2011

rr_AnnualReturn2011

1.49%

Annual Return 2012

rr_AnnualReturn2012

14.86%

1 Year

rr_AverageAnnualReturnYear01

14.86%

5 Years

rr_AverageAnnualReturnYear05

4.25%

10 Years

rr_AverageAnnualReturnYear10

9.69%

FMI LARGE CAP FUND | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

14.45%

5 Years

rr_AverageAnnualReturnYear05

3.95%

10 Years

rr_AverageAnnualReturnYear10

9.22%

FMI LARGE CAP FUND | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

10.19%

5 Years

rr_AverageAnnualReturnYear05

3.61%

10 Years

rr_AverageAnnualReturnYear10

8.46%

XML

FMI COMMON STOCK FUND | FMI COMMON STOCK FUND

FMI COMMON STOCK FUND

Investment Objective:

  FMI Common Stock Fund seeks long-term capital appreciation.

Fees and Expenses of the Fund: The following table 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)

Shareholder Fees (USD $)	FMI COMMON STOCK FUND
Maximum Sales Charge (Load) Imposed on Purchases	none
Maximum Deferred Sales Charge (Load)	none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends and Distributions	none
Redemption Fee (transfer agent charge of $15 for each wire redemption)	none
Exchange Fee	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	FMI COMMON STOCK FUND
Management Fees	1.00%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.20%
Total Annual Fund Operating Expenses	1.20%

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:

Expense Example (USD $)	1 Year	3 Years	5 Years	10 Years
FMI COMMON STOCK FUND	122	381	660	1,455

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 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 43% of the average value of its portfolio.

Principal Investment Strategies:

  The Fund invests mainly in small- to medium-capitalization companies (namely, companies with less than $5 billion market capitalization) value stocks of companies listed or traded on a national securities exchange or on a national securities association.  Under normal market conditions, the Fund invests 80% of its net assets in common stocks, including for purposes of this limitation common stocks of foreign companies traded as American Depositary Receipts (“ADRs”).

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.

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)

• 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’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

Principal Risks:

  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, or sector of the market.

• Medium Capitalization Companies Risk:  Medium capitalization companies tend to be more susceptible to adverse business or economic events than large capitalization companies, and there is a risk that the securities of medium capitalization companies may have limited liquidity and greater price volatility than securities of large capitalization companies.

• Small Capitalization Companies Risk:  Small capitalization companies typically have relatively lower revenues, limited product lines and lack of management depth, and may have a smaller share of the market for their products or services, than large and medium capitalization companies.  There is a risk that the securities of small capitalization companies may have limited liquidity and greater price volatility than securities of large and medium capitalization companies, which can negatively affect the Fund’s ability to sell these securities at quoted market prices.  Finally, there are periods when investing in small capitalization company stocks falls out of favor with investors and these stocks may underperform.

• 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) 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 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 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, if the positions are not fully 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. Foreign companies may not be subject to the same regulatory requirements 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.  Foreign governments and foreign economies often are less stable than the U.S. Government and the U.S. economy.

Performance:

  The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare to the performance of the Russell 2000 Index.  For additional information on this index, please see “Index Descriptions” in this Prospectus.  The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.  Updated performance information is available on the Fund’s website at http://www.fmifunds.com.

FMI Common Stock Fund (Annual total return as of 12/31)

During the ten year period shown on the bar chart, the Fund’s highest total return for a quarter was 21.52% (quarter ended June 30, 2009) and the lowest total return for a quarter was -19.88% (quarter ended December 31, 2008).

Average Annual Total Returns (for the periods ended December 31, 2012)

After-tax returns are calculated using the historical highest individual federal 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.  In certain cases, the figure representing “Return after taxes on distributions and sale of Fund shares” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.  The after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or Individual Retirement Accounts (IRAs).

Average Annual Returns	1 Year	5 Years	10 Years
FMI COMMON STOCK FUND	10.16%	8.43%	10.75%
FMI COMMON STOCK FUND After Taxes on Distributions	8.55%	7.46%	9.35%
FMI COMMON STOCK FUND After Taxes on Distributions and Sales	8.63%	7.10%	9.09%
FMI COMMON STOCK FUND Russell 2000 Index	16.35%	3.56%	9.72%