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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
ProspectusDate rr_ProspectusDate Jun. 28, 2011
Bright Rock Mid Cap Growth Fund (Prospectus Summary) | Bright Rock Mid Cap Growth Fund
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return, Heading rr_RiskReturnHeading Bright Rock Mid Cap Growth Fund
Investment Objective, Heading rr_ObjectiveHeading Investment Objective
investment Objective, Primary rr_ObjectivePrimaryTextBlock 
The investment objective of the Bright Rock Mid Cap Growth Fund (the "Fund") is
long-term capital appreciation.
Expense, Heading rr_ExpenseHeading Fees and Expenses of the Fund
Expense, Narrative rr_ExpenseNarrativeTextBlock 
This table describes the fees and expenses that you may pay if you buy and hold
shares of the Fund.
Shareholder Fees, Caption rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment) None
Operating Expenses, Caption 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 rr_PortfolioTurnoverTextBlock 
The Fund pays transaction costs, such as commissions, when it buys and sells
securities (or "turns over" its portfolio). A higher portfolio turnover rate may
indicate higher transaction costs and may result in higher taxes when Fund
shares are held in a taxable account. These costs, which are not reflected in
the annual fund operating expenses or in the Example, affect the Fund's
performance. For the period from May 26, 2010 (commencement of operations) to
February 28, 2011, the Fund's portfolio turnover rate was 43.2% of the average
value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 43.20%
Expenses, Not Correlated to Ratio Due to Acquired Fund Fees rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees Please note that the Total Annual Fund Operating Expenses in the table above do not correlate to the Ratio of Expenses to Average Net Assets found within the "Financial Highlights" section of the prospectus, which do not include the Acquired Fund Fees and Expenses.
Expense Example, Heading rr_ExpenseExampleHeading Example
Expense Example, Narrative rr_ExpenseExampleNarrativeTextBlock 
This Example is intended to help you compare the costs 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 those 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 rr_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Investment Strategy, Heading rr_StrategyHeading Principal Investment Strategies
Investment Strategy, Narrative rr_StrategyNarrativeTextBlock 
Under normal market conditions, the Fund invests at least 80% of its net assets
in equity securities of companies with medium-sized market capitalizations
("mid-cap companies"). The Fund defines mid-cap companies as those companies
with market capitalizations within the range of companies in the Russell Midcap
Growth® Index at the time of investment. As of the date of this Prospectus, the
market capitalization range of companies in the Russell Midcap Growth® Index was
between $675 million and $23 billion.

The Fund seeks to achieve its investment objective by investing primarily in
common stocks of mid-cap U.S. companies. Equity securities in which the Fund may
invest also include preferred stocks, convertible debt securities, and other
investment companies and exchange-traded funds ("ETFs") that invest in equity
securities of mid-cap companies. In addition to U.S. companies, the Fund may
invest up to 25% of its net assets in securities of foreign mid-cap companies
that are traded in the U.S., including companies located in emerging markets, as
well as American depositary receipts ("ADRs"). To a limited extent, the Fund may
sell securities short and may use derivative instruments, including options and
futures contracts. The Fund may also engage in securities lending to earn
income.

In selecting investments for the Fund, the Adviser seeks to identify companies
with attractive earnings growth prospects. Investments for the Fund's portfolio
are selected by applying the Adviser's disciplined, bottom-up fundamental
research process, which takes into account a company's history of earnings
stability and growth; proprietary products, processes and/or services;
leadership or competitive positions in the market or industry; balance sheet
strength; and experience of management teams. The Adviser may sell an investment
in the Fund's portfolio when the investment no longer meets the Adviser's
criteria for investments with strong growth potential or when a more attractive
investment opportunity arises.
Risk, Heading rr_RiskHeading Principal Risks
Risk, Narrative rr_RiskNarrativeTextBlock 
Before investing in the Fund, you should carefully consider your own investment
goals, the amount of time you are willing to leave your money invested, and the
amount of risk you are willing to take. Remember, in addition to possibly not
achieving your investment goals, you could lose all or a portion of your
investment in the Fund over short or even long periods of time. The principal
risks of investing in the Fund are:

  o Management Risk. The risk that investment strategies employed by the Adviser
    in selecting investments and asset allocations for the Fund may not result in
    an increase in the value of your investment or in overall performance equal to
    other similar investment vehicles having similar investment strategies.


  o New Fund Risk. There can be no assurance that the Fund will grow to or
    maintain an economically viable size.


  o General Market Risk. The risk that certain securities selected for the Fund's
    portfolio may be worth less than the price originally paid for them, or less
    than they were worth at an earlier time.


  o Equity Market Risk. The equity securities held in the Fund's portfolio may
    experience sudden, unpredictable drops in value or long periods of decline in
    value. This may occur because of factors that affect securities markets
    generally or factors affecting specific industries, sectors or companies in
    which the Fund invests.


  o Preferred Stock Risk. Preferred stock is subject to the risk that the dividend
    on the stock may be changed or omitted by the issuer, and that participation
    in the growth of an issuer may be limited.


  o Convertible Securities Risk. A convertible security is a fixed-income security
    (a debt instrument or a preferred stock) which may be converted at a stated
    price within a specified period of time into a certain quantity of the common
    stock of the same or a different issuer. The market value of a convertible
    security performs like that of a regular debt security, that is, if market
    interest rates rise, the value of the convertible security falls.

  o Growth Stock Risk. The prices of growth stocks may be more sensitive to
    changes in current or expected earnings than the prices of other stocks.


  o Mid-Cap Company Risk. The risk that the mid-capitalization companies in which
    the Fund may invest may be more vulnerable to adverse business or economic
    events than larger, more established companies. In particular, these mid-sized
    companies may pose additional risks, including liquidity risk, because these
    companies tend to have limited product lines, markets and financial resources,
    and may depend upon a relatively small management group. Therefore, mid-cap
    stocks may be more volatile than the stocks of larger companies.


  o Shares of Other Investment Companies Risk. You will indirectly bear fees and
    expenses charged by the underlying funds in addition to the Fund's direct fees
    and expenses. As a result, your cost of investing in the Fund will generally
    be higher than the cost of investing directly in the underlying fund shares.


  o Exchange-Traded Funds Risk. There are risks related to investing in ETFs that
    do not apply to investments in conventional mutual funds, including that the
    market price of the ETF's shares may trade at a discount to their net asset
    value ("NAV") or that an active trading market for an ETF's shares may not
    develop or be maintained.


  o Foreign Securities Risk. The risks of investments in securities of foreign
    companies involve risks not generally associated with investment in the
    securities of U.S. companies, including risks relating to political, social
    and economic developments abroad and differences between U.S. and foreign
    regulatory requirements and market practices, including fluctuations in
    foreign currencies.


  o Emerging Markets Risk. The risk that countries in emerging markets are
    generally more volatile and can have relatively unstable governments, social
    and legal systems that do not protect shareholders, economies based on only a
    few industries, and securities markets that trade a small number of issues.


  o Options and Futures Risk. Options and futures may be more volatile than
    investments directly in the underlying securities, involve additional costs
    and may involve a small initial investment relative to the risk assumed. In
    addition, the value of an option or future may not correlate perfectly to the
    underlying securities index or overall securities markets.


  o Short Sale Risk. Short sale strategies are riskier than long investment
    strategies. Short selling of securities may result in the Fund's investment
    performance suffering if it is required to close out a short position earlier
    than it had intended.


  o Securities Lending Risk. The Fund may lend its portfolio securities to
    brokers, dealers and financial institutions under agreements which require
    that the loans be secured continuously by collateral, typically cash, which
    the Fund will invest during the term of the loan. The risk in lending
    portfolio securities, as with other extensions of credit, consists of
    potential default or insolvency of the borrower. In either of these cases, the
    Fund could experience delays in recovering securities or collateral or could
    lose all or part of the value of the loaned securities. The Fund also bears
    the risk that the value of investments made with collateral posted for the
    loan may decline.


  o Not a Bank Deposit. Investments by any investors in the Fund are not bank
    deposits, are not guaranteed by any bank, and are not insured or guaranteed by
    the Federal Deposit Insurance Corporation or any other government agency.
Risk, Lose Money rr_RiskLoseMoney Remember, in addition to possibly not achieving your investment goals, you could lose all or a portion of your investment in the Fund over short or even long periods of time.
Risk, Not Insured Depository Institution rr_RiskNotInsuredDepositoryInstitution Investments by any investors in the Fund are not bank deposits, are not guaranteed by any bank, and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table, Heading rr_BarChartAndPerformanceTableHeading Performance
Performance, Narrative rr_PerformanceNarrativeTextBlock 
Performance information for the Fund has not been presented because, as of the
date of this Prospectus, the Fund has not been in operation for a full calendar
year.
Performance, One Year or Less rr_PerformanceOneYearOrLess Performance information for the Fund has not been presented because, as of the date of this Prospectus, the Fund has not been in operation for a full calendar year.
Bright Rock Mid Cap Growth Fund (Prospectus Summary) | Bright Rock Mid Cap Growth Fund | Institutional Class Shares
  
Risk/Return: rr_RiskReturnAbstract  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2013-05-28
Bright Rock Mid Cap Growth Fund (Prospectus Summary) | Bright Rock Mid Cap Growth Fund | Investor Class Shares
  
Risk/Return: rr_RiskReturnAbstract  
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination 2013-05-28
Bright Rock Mid Cap Growth Fund | Institutional Class Shares
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.75% [1]
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.87%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.62% [2]
Fee Waiver/Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.37%)
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.25% [3]
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 127
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 427
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 800
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 1,849
Bright Rock Mid Cap Growth Fund | Investor Class Shares
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.75% [1]
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.87%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.87% [2]
Fee Waiver/Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.37%)
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.50% [3]
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 153
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 504
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 931
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 2,120
[1] Effective June 28, 2011, the management fee was reduced from 1.00% to 0.75%. The table has been restated to reflect the current lower management fee.
[2] Please note that the Total Annual Fund Operating Expenses in the table above do not correlate to the Ratio of Expenses to Average Net Assets found within the "Financial Highlights" section of the prospectus, which do not include the Acquired Fund Fees and Expenses.
[3] Pursuant to an operating expense limitation agreement between the Fund's investment adviser, Bright Rock Capital Management, LLC (the "Adviser"), and the Fund, the Adviser has agreed to waive its fees and/or reimburse expenses of the Fund to ensure that Total Annual Fund Operating Expenses (exclusive of any front-end or contingent deferred loads, taxes, leverage, interest, brokerage commissions, expenses incurred in connection with any merger or reorganization, dividends or interest expenses on short positions, acquired fund fees and expenses or extraordinary expenses) for the Fund do not exceed 1.25% and 1.50% of the Fund's average net assets for Institutional Class shares and Investor Class shares, respectively, through May 28, 2013, subject thereafter to annual re-approval of the agreement by the Trust's Board of Trustees (the "Board of Trustees"). Prior to June 28, 2011, the expense limitation was 1.50% and 1.75% for Institutional Class shares and Investor Class shares, respectively. The current operating expense limitation agreement can be terminated only by, or with the consent of, the Board of Trustees. The Adviser is permitted to seek reimbursement from the Fund, subject to the limitations on Fund expenses described herein, for fees it waives and Fund expenses it paid for a period of three fiscal years from the date of such waiver and/or reimbursement.