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Risk/Return: rr_RiskReturnAbstract  
ProspectusDate rr_ProspectusDate Nov. 28, 2011
Frost Low Duration Municipal Bond Fund (First Prospectus Summary) | Frost Low Duration Municipal Bond Fund
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return, Heading rr_RiskReturnHeading FROST LOW DURATION MUNICIPAL BOND FUND
Investment Objective, Heading rr_ObjectiveHeading INVESTMENT OBJECTIVE
investment Objective, Primary rr_ObjectivePrimaryTextBlock 
The Frost Low Duration Municipal Bond Fund (the "Fund") seeks to provide a
consistent level of current income exempt from federal income tax
Investment Objective, Secondary rr_ObjectiveSecondaryTextBlock 
with a secondary emphasis on maximizing total return.
Expense, Heading rr_ExpenseHeading FUND FEES AND EXPENSES
Expense, Narrative rr_ExpenseNarrativeTextBlock 
The table below describes the fees and expenses that you may pay if you buy and
hold Class A Shares of the Fund. You may qualify for sales charge discounts if
you and your family invest, or agree to invest in the future, at least $100,000
in Class A Shares of the Frost Funds (Class A Shares purchased without an
initial sales charge may be subject to a contingent deferred sales charge if
redeemed within 12 months of purchase). More information about these and other
discounts is available from your financial professional and in the section
"Sales Charges" on page 104 of this prospectus.
Shareholder Fees, Caption rr_ShareholderFeesCaption SHAREHOLDER FEES (FEES PAID DIRECTLY FROM YOUR INVESTMENT)
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
total annual fund operating expenses or in the example, affect the Fund's
performance. During its most recent fiscal year, the Fund's portfolio turnover
rate was 9% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 9.00%
Expense Breakpoint, Discounts rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in Class A Shares of the Frost Funds (Class A Shares purchased without an initial sales charge may be subject to a contingent deferred sales charge if redeemed within 12 months of purchase).
Expense Breakpoint, Minimum Investment Required Amount rr_ExpenseBreakpointMinimumInvestmentRequiredAmount 100,000
Expenses, Not Correlated to Ratio Due to Acquired Fund Fees rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees The Total Annual Fund Operating Expenses in this fee table do not correlate to the expense ratio in the Fund's Financial Highlights because the Financial Highlights include only the direct operating expenses incurred by the Fund, and exclude 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 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 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, at the time of initial purchase, in municipal securities that generate
income exempt from federal income tax, but not necessarily the federal
alternative minimum tax ("AMT").  These securities include securities of
municipal issuers located in Texas as well as in other states, territories and
possessions of the United States. This investment policy may not be changed
without shareholder approval.

The Fund primarily invests in securities that are of investment grade (rated in
one of the four highest rating categories). The Fund may invest more than 25%
of its total assets in bonds of issuers in Texas. The Adviser actively manages
the portfolio, as well as the maturity of the Fund, and purchases securities
which will, on average, mature in less than five years. The Fund tends to have
an average duration within plus or minus one year of the Barclays Capital
Three-Year Municipal Bond Index. The Fund seeks to maintain a low duration, but
may lengthen or shorten its duration within its target range to reflect changes
in the overall composition of the short-term investment-grade debt markets.
Duration is a measure of a bond price's sensitivity to a given change in
interest rates. Generally, the longer a bond's duration, the greater its price
sensitivity to a change in interest rates. For example, the price of a bond
with a duration of three years would be expected to fall approximately 3% if
rates were to rise by one percentage point.

The Adviser, in constructing and maintaining the Fund's portfolio, employs the
following four primary strategies to varying degrees depending on its views of
economic growth prospects, interest rate predictions and relative value
assessments: interest rate positioning based on duration and yield curve
positioning; asset category allocations; credit sector allocations relating to
security ratings by the national ratings agencies; and individual security
selection. Securities will be considered for sale in the event of or in
anticipation of a credit downgrade; to effect a change in duration or sector
weighting of the Fund; to realize an aberration in a security's valuation; or
when the Adviser otherwise deems appropriate.
Risk, Heading rr_RiskHeading PRINCIPAL RISKS
Risk, Narrative rr_RiskNarrativeTextBlock 
As with all mutual funds, a shareholder is subject to the risk that his or her
investment could lose money. A FUND SHARE IS NOT A BANK DEPOSIT AND IT IS NOT
INSURED OR GUARANTEED BY THE FDIC, OR ANY GOVERNMENT AGENCY. The principal risks
affecting shareholders' investments in the Fund are set forth below.

MUNICIPAL ISSUERS RISK -- There may be economic or political changes that
impact the ability of municipal issuers to repay principal and to make interest
payments on municipal securities. Changes in the financial condition or credit
rating of municipal issuers also may adversely affect the value of the Fund's
municipal securities. Constitutional or legislative limits on borrowing by
municipal issuers may result in reduced supplies of municipal securities.
Moreover, certain municipal securities are backed only by a municipal issuer's
ability to levy and collect taxes.

STATE-SPECIFIC RISK -- The Fund is subject to the risk that the economy of the
states in which it invests, and the revenues underlying state municipal bonds,
may decline.  Investing primarily in a single state means that the Fund is more
exposed to negative political or economic factors in that state than a fund
that invests more widely.

INTEREST RATE RISK -- As with most funds that invest in debt securities, changes
in interest rates are one of the most important factors that could affect the
value of your investment. Rising interest rates tend to cause the prices of
debt securities (especially those with longer maturities) and the Fund's share
price to fall.

The concept of duration is useful in assessing the sensitivity of a fixed
income fund to interest rate movements, which are usually the main source of
risk for most fixed-income funds. Duration measures price volatility by
estimating the change in price of a debt security for a 1% change in its yield.
For example, a duration of three years means the price of a debt security will
change about 3% for every 1% change in its yield. Thus, the higher duration,
the more volatile the security.

Debt securities have a stated maturity date when the issuer must repay the
principal amount of the bond. Some debt securities, known as callable bonds,
may repay the principal earlier than the stated maturity date. Debt securities
are most likely to be called when interest rates are falling because the issuer
can refinance at a lower rate.

Rising interest rates may also cause investors to pay off mortgage-backed and
asset-backed securities later than anticipated, forcing the Fund to keep its
money invested at lower rates. Falling interest rates, however, generally cause
investors to pay off mortgage-backed and asset-backed securities earlier than
expected, forcing the Fund to reinvest the money at a lower interest rate.

Mutual funds that invest in debt securities have no real maturity. Instead,
they calculate their weighted average maturity. This number is an average of
the effective or anticipated maturity of each debt security held by the mutual
fund, with the maturity of each security weighted by the percentage of its
assets of the mutual fund it represents.

CREDIT RISK -- The credit rating or financial condition of an issuer may affect
the value of a debt security. Generally, the lower the quality rating of a
security, the greater the risk that the issuer will fail to pay interest fully
and return principal in a timely manner. If an issuer defaults or becomes
unable to honor its financial obligations, the security may lose some or all of
its value. The issuer of an investment-grade security is more likely to pay
interest and repay principal than an issuer of a lower rated bond. Adverse
economic conditions or changing circumstances, however, may weaken the capacity
of the issuer to pay interest and repay principal.

Although the Fund's U.S. government securities are considered to be among the
safest investments, they are not guaranteed against price movements due to
changing interest rates. Obligations issued by some U.S. government agencies
are backed by the U.S. Treasury, while others are backed solely by the ability
of the agency to borrow from the U.S. Treasury or by the government sponsored
agency's own resources. As a result, investments in securities issued by
government sponsored agencies that are not backed by the U.S. Treasury are
subject to higher credit risk than those that are. High yield, or "junk," bonds
are highly speculative securities that are usually issued by smaller less credit
 worthy and/or highly leveraged (indebted)companies. Compared with investment-grade
bonds, high yield bonds carry a greater degree of risk and are less likely to make
payments of interest and principal. Market developments and the financial and
business conditions of the corporation issuing these securities influences their
price and liquidity more than changes in interest rates, when compared to investment-
grade debt securities. Insufficient liquidity in the junk bond market may make it
more difficult to dispose of junk bonds and may cause the Fund to experience sudden
and substantial price declines. A lack of reliable, objective data or market
quotations may make it more difficult to value junk bonds accurately.
Risk, Lose Money rr_RiskLoseMoney As with all mutual funds, a shareholder is subject to the risk that his or her investment could lose money.
Risk, Not Insured Depository Institution rr_RiskNotInsuredDepositoryInstitution A FUND SHARE IS NOT A BANK DEPOSIT AND IT IS NOT INSURED OR GUARANTEED BY THE FDIC, OR ANY GOVERNMENT AGENCY.
Bar Chart and Performance Table, Heading rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance, Narrative rr_PerformanceNarrativeTextBlock 
The bar chart and the performance table below illustrate the risks and
volatility of an investment in the Fund by showing changes in the Fund's
performance from year to year and by showing how the Fund's average annual
total returns for 1 and 5 years and since inception compare with those of a
broad measure of market performance.

The performance information provided includes the returns of Institutional
Class Shares for periods prior to August 28, 2008.  Institutional Class Shares
of the Fund are offered in a separate prospectus. Institutional Class Shares
would have substantially similar performance as Class A Shares because the
shares are invested in the same portfolio of securities and the annual returns
would differ only to the extent that the expenses of Class A Shares are higher
than the expenses of the Institutional Class Shares and, therefore, returns for
the Class A Shares would be lower than those of the Institutional Class Shares.
Institutional Class Shares performance presented has been adjusted to reflect
the Distribution (12b-1) fees and, for the performance table, the Maximum Sales
Charge (Load), applicable to Class A Shares.

Institutional Class Shares first became available on April 25, 2008, when the
Fund succeeded to the assets and operations of a common trust fund that was
managed by The Frost National Bank (the "Predecessor Fund"). The performance
information provided includes the returns of the Predecessor Fund for periods
prior to April 25, 2008.  Because the Predecessor Fund was not a registered
mutual fund, it was not subject to the same investment and tax restrictions as
the Fund; if it had been, the Predecessor Fund's performance may have been
lower.  The Predecessor Fund's inception start date is August 31, 2004
("Inception Start Date").

The bar chart figures do not include sales charges that may have been paid when
investors bought and sold Class A Shares of the Fund. If sales charges were
included, the returns would be lower. Of course, the Fund's past performance
(before and after taxes) does not necessarily indicate how the Fund will
perform in the future. Updated performance information is available on the
Fund's website at www.frostbank.com or by calling 1-877-71-FROST.
Performance, Information Illustrates Variability of Returns rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and the performance table below illustrate the risks and volatility of an investment in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual total returns for 1 and 5 years and since inception compare with those of a broad measure of market performance.
Performance, Availability Phone Number rr_PerformanceAvailabilityPhone 1-877-71-FROST
Performance, Availability Website Address rr_PerformanceAvailabilityWebSiteAddress www.frostbank.com
Performance, Past Does Not Indicate Future rr_PerformancePastDoesNotIndicateFuture Of course, the Fund's past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart, Closing rr_BarChartClosingTextBlock 
BEST QUARTER          WORST QUARTER
2.14%                 (1.27)%
(12/31/2008)          (03/31/2005)

The performance information shown above is based on a calendar year.  The
Fund's performance for Class A Shares from 1/1/11 to 9/30/11 was 1.73%.
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 Actual after-tax returns will 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, Narrative rr_PerformanceTableNarrativeTextBlock 
This table compares the Fund's Class A Shares' average annual total returns for
the periods ended December 31, 2010 to those of the Barclays Capital Three-Year
Municipal Bond Index. After-tax returns cannot be calculated for periods before
the Fund's registration as a mutual fund and they are, therefore, unavailable
for the period since the Inception Start Date.

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 will 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.

Returns after taxes on distributions and sale of Fund shares may be higher than
before-tax returns when a net capital loss occurs upon the redemption of Fund
shares.
Average Annual Returns, Caption rr_AverageAnnualReturnCaption AVERAGE ANNUAL TOTAL RETURNS FOR PERIODS ENDED DECEMBER 31, 2010
Frost Low Duration Municipal Bond Fund (First Prospectus Summary) | Frost Low Duration Municipal Bond Fund | Class A Shares
  
Risk/Return: rr_RiskReturnAbstract  
Year to Date Return, Label rr_YearToDateReturnLabel The performance information shown above is based on a calendar year.
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2011
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 1.73%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel BEST QUARTER
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2008
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 2.14%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel WORST QUARTER
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2005
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (1.27%)
Frost Low Duration Municipal Bond Fund | BARCLAYS CAPITAL THREE-YEAR MUNICIPAL BOND INDEX
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel BARCLAYS CAPITAL THREE-YEAR MUNICIPAL BOND INDEX
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 1.81%
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 4.22%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 3.51%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Aug. 31, 2004
Frost Low Duration Municipal Bond Fund | Class A Shares
  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 2.75%
Maximum Deferred Sales Charge (Load) (as a percentage of net asset value) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends and Other Distributions (as a percentage of offering price) rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption Fee (as a percentage of amount redeemed if applicable) rr_RedemptionFeeOverRedemption none
Management Fees rr_ManagementFeesOverAssets 0.50%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses rr_OtherExpensesOverAssets 0.30%
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.02%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.07% [1]
Expense Example, With Redemption, 1 Year rr_ExpenseExampleYear01 381
Expense Example, With Redemption, 3 Years rr_ExpenseExampleYear03 606
Expense Example, With Redemption, 5 Years rr_ExpenseExampleYear05 849
Expense Example, With Redemption, 10 Years rr_ExpenseExampleYear10 1,545
Annual Return 2005 rr_AnnualReturn2005 (0.61%)
Annual Return 2006 rr_AnnualReturn2006 1.49%
Annual Return 2007 rr_AnnualReturn2007 3.04%
Annual Return 2008 rr_AnnualReturn2008 3.31%
Annual Return 2009 rr_AnnualReturn2009 3.75%
Annual Return 2010 rr_AnnualReturn2010 1.31%
Average Annual Returns, Label rr_AverageAnnualReturnLabel FUND RETURN BEFORE TAXES
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (1.47%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05 2.00%
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception 1.46%
Average Annual Returns, Inception Date rr_AverageAnnualReturnInceptionDate Aug. 31, 2004
Frost Low Duration Municipal Bond Fund | Class A Shares | After Taxes on Distributions
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel FUND RETURN AFTER TAXES ON DISTRIBUTIONS
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (1.47%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05   
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception   
Frost Low Duration Municipal Bond Fund | Class A Shares | After Taxes on Distributions and Sales
  
Risk/Return: rr_RiskReturnAbstract  
Average Annual Returns, Label rr_AverageAnnualReturnLabel FUND RETURN AFTER TAXES ON DISTRIBUTIONS AND SALE OF FUND SHARES
Average Annual Returns, 1 Year rr_AverageAnnualReturnYear01 (0.38%)
Average Annual Returns, 5 Years rr_AverageAnnualReturnYear05   
Average Annual Returns, Since Inception rr_AverageAnnualReturnSinceInception   
[1] The Total Annual Fund Operating Expenses in this fee table do not correlate to the expense ratio in the Fund's Financial Highlights because the Financial Highlights include only the direct operating expenses incurred by the Fund, and exclude Acquired Fund Fees and Expenses.