The Fund incurs transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the period March 1, 2011 (commencement of operations) to August 31, 2011, the Fund's portfolio turnover rate (not annualized) was 21% of the average value of its portfolio.

Portfolio Turnover, Rate

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21.00%

Expenses Restated to Reflect Current [Text]

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The expense information in the fee table has been restated to reflect that effective September 1, 2011, the Fund entered into a new transfer agency agreement

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other 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 those periods. The example also assumes that your investment has a 5% return each year and that the Fund's operating expenses are as shown in the table and remain the same. The costs in the one-year example and for the first year of the three-, five, and ten-year examples reflect the Adviser's agreement to waive fees and reimburse expenses through July 6, 2013. Although your actual costs and returns may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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The Fund invests at least 80% of its assets in value oriented common stocks of small-sized U.S. companies similar in size to those within the Russell 2000^® Value Index. These small-sized companies, at the time of purchase, generally have market capitalizations in the range of companies in the Russell 2000^® Value Index. The largest company by market capitalization in the Russell 2000^® Value Index was approximately $2.8 billion as of August 31, 2011 and the median market capitalization of companies in the Index as of the same period was $415 million. The Adviser uses a disciplined investment process that identifies companies that it believes have good value relative to their assets, sustainable cash flow, acceptable levels of debt, and potential for improving their business fundamentals. In addition, these companies may have under-appreciated assets, or be involved in company turnarounds or corporate restructurings.

Risk [Heading]

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Principal Risks

Risk Narrative [Text Block]

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The Fund cannot assure that it will achieve its investment objective. An investment in the Fund is not a deposit of BMO Harris Bank N.A. or any of its affiliates and is not insured or guaranteed by the FDIC or any other government agency. The net asset value of the Fund will vary and you could lose money by investing in the Fund. In addition, the Fund is subject to the following risks.

Stock Market Risks. The Fund is subject to fluctuations in the stock market, which has periods of increasing and decreasing values. Stocks are more volatile than debt securities. If the value of the Fund's investments goes down, you may lose money.

Sector Risks. Companies with similar characteristics, such as those within the same industry, may be grouped together in broad categories called sectors. To the extent the Fund invests its assets in a particular sector, the Fund's performance may be more susceptible to any economic, business or other developments that generally affect that sector.

Style Risks. Investments in value stocks are subject to the risk that their intrinsic values may never be realized by the market, that a stock judged to be undervalued may actually be appropriately priced, or that their prices may decline, even though in theory they are already undervalued. Value stocks can react differently to issuer, political, market and economic developments than the market as a whole and other types of stocks (e.g., growth stocks).

Small Company Risks. Generally, the smaller the market capitalization of a company, the fewer the number of shares traded daily, the less liquid its stock and the more volatile its price. Companies with smaller market capitalizations also tend to have unproven track records, a limited product or service base and limited access to capital. These factors also increase risks and make these companies more likely to fail than companies with larger market capitalizations.

Management Risks. The Adviser's judgments about the attractiveness, value and potential appreciation of the Fund's investments may prove to be incorrect. Accordingly, there is no guarantee that the investment techniques used by the Fund's managers will produce the desired results.

Risk Lose Money [Text]

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The net asset value of the Fund will vary and you could lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

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An investment in the Fund is not a deposit of BMO Harris Bank N.A. or any of its affiliates and is not insured or guaranteed by the FDIC or any other government agency.

Bar Chart and Performance Table [Heading]

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Fund Performance

Performance Narrative [Text Block]

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Performance information is not included because the Fund does not have one full calendar year of performance.

Performance One Year or Less [Text]

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Performance information is not included because the Fund does not have one full calendar year of performance

[1]

The expense information in the fee table has been restated to reflect that effective September 1, 2011, the Fund entered into a new transfer agency agreement.

[2]

M&I Investment Management Corp. (Adviser) has agreed to waive or reduce its investment advisory fee and reimburse expenses to the extent necessary to prevent total annual operating expenses (excluding interest, taxes, brokerage commissions, other investment-related costs and extraordinary expenses, such as litigation and other expenses not incurred in the ordinary course of the Fund's business and Acquired Fund Fees and Expenses) from exceeding 1.24% for Class Y and 0.99% for Class I through July 6, 2013. The Adviser may not terminate this arrangement prior to July 6, 2013 unless the investment advisory agreement is terminated.