The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund’s performance. During the most recent fiscal year, the portfolio turnover rate for the Fund was 15% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

15.00%

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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The example below is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. This 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 each period. The example also assumes that your investment has a 5% annual return each year and that the Fund’s operating expenses remain the same.

Expense Example by, Year, Caption [Text]

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

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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Under normal conditions, Brown Advisory LLC (the “Adviser”) seeks to achieve the Fund’s investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in a diversified portfolio of equity securities. The Fund invests primarily in securities of medium and large market capitalization companies that the Adviser believes have strong, or improving, long-term business characteristics and share prices that do not reflect these favorable fundamental attributes. Medium and large market capitalization companies are, according to the Adviser, those companies with market capitalizations generally greater than $2 billion at the time of purchase. Equity securities include domestic and foreign common and preferred stock, convertible debt securities, American Depositary Receipts (“ADRs”), real estate investment trusts (“REITs”) and exchange traded funds (“ETFs”). The Adviser may also invest in private placements in these types of securities. The Fund invests primarily in ETFs that have an investment objective similar to the Fund’s or that otherwise are permitted investments with the Fund’s investment policies described herein. ADRs are equity securities traded on U.S. securities exchanges, which are generally issued by banks or trust companies to evidence ownership of foreign equity securities. The Fund may invest up to 15% of its net assets in foreign securities, including emerging markets.

The Adviser follows an investment philosophy referred to as “flexible equity.” Flexibility allows the Adviser to look at many types of opportunities expanding the bargain hunting concepts of value investing to a broad range of opportunities. The Adviser emphasizes individual security selection based on identifying long-term attractive businesses, i.e., those with significant desirable traits and few or no undesirable traits, when they are available at bargain prices. Desirable traits include favorable business economics supported by enduring competitive advantages, capable and trustworthy management, positive industry dynamics and sensible capital allocation. Bargain prices most often arise in the stock market due to short-term investor perceptions or temporary business challenges creating undue price declines and price recovery potential, or unrecognized favorable prospects within a business or changes for the better in company management or industry conditions.

With respect to 20% of its assets, the Fund may invest in (1) investment grade and non-investment grade debt securities, including with respect to 10% of its assets, non-investment grade securities rated BB (or lower)/Ba (or lower) (“junk bonds”), by Standard & Poor’s (“S&P”) or Moody’s Investors Service (“Moody’s”), respectively, or (2) unrated debt securities determined by the Adviser to be of comparable quality.

The sale of a company’s equity securities may arise if the securities’ market price exceeds the Adviser’s estimate of intrinsic value, if the ratio of risk and rewards of continuing to own the company’s equity is no longer attractive, or if the Adviser needs to raise cash to purchase a more attractive investment opportunity, satisfy net redemptions, or other purposes.

In order to respond to adverse market, economic, political, or other conditions, the Fund may assume a temporary defensive position that is inconsistent with its investment objective and principal investment strategy and invest without limit in cash and prime quality cash equivalents such as prime commercial paper and other money market instruments. A defensive position, taken at the wrong time, may have an adverse impact on the Fund’s performance. The Fund may be unable to achieve its investment objective during the employment of a temporary defensive measure.

Risk [Heading]

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Principal Investment Risks

Risk Narrative [Text Block]

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As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund. An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The following are the principal risks that could affect the value of your investment:

●

American Depositary Receipts (“ADRs”) Risk. ADRs may be subject to some of the same risks as direct investment in foreign companies, which includes international trade, currency, political, regulatory and diplomatic risks. In a sponsored ADR arrangement, the foreign issuer assumes the obligation to pay some or all of the depositary’s transaction fees. Under an unsponsored ADR arrangement, the foreign issuer assumes no obligations and the depositary’s transaction fees are paid directly by the ADR holders. Because unsponsored ADR arrangements are organized independently and without the cooperation of the issuer of the underlying securities, available information concerning the foreign issuer may not be as current as for sponsored ADRs and voting rights with respect to the deposited securities are not passed through.

●	Convertible Securities Risk. The value of convertible securities tends to decline as interest rates rise and, because of the conversion feature, tends to vary with fluctuations in the market value of the underlying securities.

●

Debt/Fixed Income Securities Risk. An increase in interest rates typically causes a fall in the value of the debt securities in which the Fund may invest. The value of your investment in the Fund may change in response to changes in the credit ratings of the Fund’s portfolio of debt securities. Interest rates in the United States are at, or near, historic lows, which may increase the Fund’s exposure to risks associated with rising interest rates. Moreover, rising interest rates or lack of market participants may lead to decreased liquidity in the bond and loan markets, making it more difficult for the Fund to sell its holdings at a time when the Fund’s manager might wish to sell. Lower rated securities (“junk bonds”) are generally subject to greater risk of loss of your money than higher rated securities. Issuers may (increase) decrease prepayments of principal when interest rates (fall) increase, affecting the maturity of the debt security and causing the value of the security to decline.

●

Equity and General Market Risk. Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value. The stock market may experience declines or stocks in the Fund’s portfolio may not increase their earnings at the rate anticipated. The Fund’s NAV and investment return will fluctuate based upon changes in the value of its portfolio securities.

●

ETF Risk. ETFs may trade at a discount to the aggregate value of the underlying securities and although expense ratios for ETFs are generally low, frequent trading of ETFs by the Fund can generate brokerage expenses. Shareholders of the Fund will indirectly be subject to the fees and expenses of the individual ETFs in which the Fund invests.

●	Foreign Securities Risk. Foreign securities, including ADRs, are subject to additional risks including international trade, currency, political, regulatory and diplomatic risks.

●	Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

●

Non-Investment Grade Securities Risk. Securities rated below investment grade, i.e., Ba or BB and lower (“junk bonds”), are subject to greater risks of loss of your money than higher rated securities. Compared with issuers of investment grade fixed-income securities, junk bonds are more likely to encounter financial difficulties and to be materially affected by these difficulties.

●

Private Placement Risk. The Fund may invest in privately issued securities of domestic common and preferred stock, convertible debt securities, ADRs, REITs and ETFs, including those which may be resold only in accordance with Rule 144A under the Securities Act of 1933, as amended (“1933 Act”). Privately issued securities are restricted securities that are not publicly traded. Delay or difficulty in selling such securities may result in a loss to the Fund.

●	REIT and Real Estate Risk. The value of the Fund’s investments in REITs may change in response to changes in the real estate market such as declines in the value of real estate, lack of available capital or financing opportunities, and increases in property taxes or operating costs.

●

Smaller and Medium Capitalization Company Risk. Securities of smaller and medium-sized companies may be more volatile and more difficult to liquidate during market down turns than securities of larger companies. Additionally the price of smaller companies may decline more in response to selling pressures.

●	Value Company Risk. The stock of value companies can continue to be undervalued for long periods of time and not realize its expected value. The value of the Fund may decrease in response to the activities and financial prospects of an individual company.

Risk Lose Money [Text]

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As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Risk Not Insured Depository Institution [Text]

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An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

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The following performance information provides some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of the Investor Shares, Advisor Shares and Institutional Shares for 1 year, 5 years and since inception periods compare to a broad-based market index.

The Fund is the successor to the investment performance of the Brown Advisory Flexible Value Fund (the “Predecessor Fund”) as a result of the reorganization of the Predecessor Fund into the Fund on October 19, 2012. Accordingly, the performance information shown below for periods prior to October 19, 2012 is that of the Predecessor Fund. The Predecessor Fund was also advised by the Adviser and had the same investment objective and strategies as the Fund.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisoryfunds.com or by calling 800-540-6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

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The following performance information provides some indication of the risks of investing in the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800-540-6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisoryfunds.com

Performance Past Does Not Indicate Future [Text]

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Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

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Brown Advisory Flexible Equity Fund - Investor Shares Calendar Year Total Returns

Bar Chart Closing [Text Block]

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The Fund’s calendar year-to-date total return as of September 30, 2014 was 6.11%. During the periods shown in the chart, the highest quarterly return was 17.44% (for the quarter ended June 30, 2009) and the lowest quarterly return was -23.94% (for the quarter ended December 31, 2008).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2014

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

6.11%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

17.44%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(23.94%)

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

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(reflects no deduction for fees, expenses and taxes)

Performance Table Uses Highest Federal Rate

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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

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Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

Performance Table One Class of after Tax Shown [Text]

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After-tax returns are shown for Investor Shares only. After-tax returns for Advisor Shares and Institutional Shares will vary.

Performance Table Closing [Text Block]

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NOTE: The Flexible Equity Fund offers three classes of shares. Investor Shares commenced operations on November 30, 2006 as part of the Predecessor Fund and Advisor Shares commenced operations on January 24, 2007 as part of the Predecessor Fund. Performance shown prior to inception of the Advisor Shares and Institutional Shares is based on the performance of Investor Shares, adjusted for the higher expenses applicable to Advisor Shares and lower expenses applicable to Institutional Shares. Prior to July 1, 2011, the Advisor Shares were known as A Shares. Institutional Shares commenced operations on October 19, 2012. Prior to October 19, 2012, Investor Shares were known as Institutional Shares.

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. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Investor Shares only. After-tax returns for Advisor Shares and Institutional Shares will vary.

Caption

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Brown Advisory Flexible Equity Fund Average Annual Total Returns

S&P 500® Index (reflects no deduction for fees, expenses and taxes)

Risk/Return:

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Label

rr_AverageAnnualReturnLabel

S&P 500® Index (reflects no deduction for fees, expenses and taxes)

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

32.39%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

17.94%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

6.26%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 30, 2006

Institutional Shares

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) imposed on Purchases (as a % of the offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) imposed on Redemptions (as a % of the sale price)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a % of amount exchanged on shares held for 14 days or less)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees

rr_ManagementFeesOverAssets

0.60%

Distribution (12b-1) Fees

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none

Shareholder Servicing Fees

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none

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Fund Operating Expenses

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0.81%

Expense Example, with Redemption, 1 Year

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$ 83

Expense Example, with Redemption, 3 Years

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259

Expense Example, with Redemption, 5 Years

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450

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,002

Label

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Institutional Shares - Return Before Taxes

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

35.75%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

21.25%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.79%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 30, 2006

Investor Shares

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) imposed on Purchases (as a % of the offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) imposed on Redemptions (as a % of the sale price)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a % of amount exchanged on shares held for 14 days or less)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees

rr_ManagementFeesOverAssets

0.60%

Distribution (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.96%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

Expense Example, with Redemption, 3 Years

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306

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

531

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,178

Annual Return 2007

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(7.50%)

Annual Return 2008

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(40.03%)

Annual Return 2009

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40.83%

Annual Return 2010

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10.86%

Annual Return 2011

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4.04%

Annual Return 2012

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18.12%

Annual Return 2013

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35.52%

Label

rr_AverageAnnualReturnLabel

Investor Shares - Return Before Taxes

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

35.52%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

21.06%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.62%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 30, 2006

Investor Shares | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Investor Shares - Return After Taxes on Distributions

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

35.43%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

20.95%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.50%

Investor Shares | After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Investor Shares - Return After Taxes on Distributions and Sale of Fund Shares

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

20.18%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

17.26%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

4.40%

Advisor Shares

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) imposed on Purchases (as a % of the offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) imposed on Redemptions (as a % of the sale price)

rr_MaximumDeferredSalesChargeOverOther

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a % of amount exchanged on shares held for 14 days or less)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees

rr_ManagementFeesOverAssets

0.60%

Distribution (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.21%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

123

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

384

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

665

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,466

Label

rr_AverageAnnualReturnLabel

Advisor Shares - Return Before Taxes

Average Annual Returns, 1 Year

rr_AverageAnnualReturnYear01

35.28%

Average Annual Returns, 5 Years

rr_AverageAnnualReturnYear05

20.87%

Average Annual Returns, Since Inception

rr_AverageAnnualReturnSinceInception

5.33%

Average Annual Returns, Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 30, 2006