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AdvisorShares Athena High Dividend ETF (Prospectus Summary) | AdvisorShares Athena High Dividend ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk/Return [Heading] rr_RiskReturnHeading

ADVISORSHARES ATHENA HIGH DIVIDEND ETF

NYSE Arca Ticker: DIVI
Objective [Heading] rr_ObjectiveHeading

INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The AdvisorShares Athena High Dividend ETF (the “Fund”) seeks long-term capital appreciation.
Expense [Heading] rr_ExpenseHeading

FUND FEES AND EXPENSES

Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption

SHAREHOLDER FEES (fees paid directly from your investment) None

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 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 Operating Expenses or in the Example, affect the Fund’s performance. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund’s shares. During the most recent fiscal year ended June 30, 2016, the Fund’s portfolio turnover rate was 199% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 199.00%
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 shares of the Fund with the cost of investing in other funds. This Example does not take into account creation or redemption transaction fees, or the brokerage commissions that you pay when purchasing or selling shares of the Fund. If these fees and commissions were included, your costs would be higher.

 

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell 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. 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 seeks to achieve its investment objective by investing primarily in U.S. and foreign common stock of issuers of any capitalization range and American Depositary Receipts (“ADRs”) that provide investment exposure to global equity markets. ADRs are U.S. traded equity securities that represent interests in securities issued by foreign publicly listed companies. To a lesser extent, the Fund may invest in affiliated and unaffiliated exchange-traded funds (“ETFs”) and exchange-traded notes (“ETNs” and together with ETFs, exchange-traded products (“ETPs”)), as well as real estate investment trusts (“REITs”), master limited partnerships, exchange-traded limited partnerships, and closed-end funds.

 

AthenaInvest Advisors LLC (the “Sub-Advisor”) manages the Fund’s portfolio based on its patented Behavioral Portfolio Management methodology. The Sub-Advisor starts by applying a quantitative behavioral screen that narrows the equity universe to securities held in large part by mutual funds the Sub-Advisor believes to be most consistently pursuing their investment strategy. The Sub-Advisor then narrows this universe by a high dividend yield criteria and selects positions for the portfolio based on the highest combined ranking of the two dimensions.

 

On a day-to-day basis, the Fund may hold money market instruments, cash, other cash equivalents, and ETPs that invest in these and other highly liquid instruments.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration

The Fund seeks to achieve its investment objective by investing primarily in U.S. and foreign common stock of issuers of any capitalization range and American Depositary Receipts (“ADRs”) that provide investment exposure to global equity markets.
Risk [Heading] rr_RiskHeading

PRINCIPAL RISKS OF INVESTING IN THE FUND
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock

The Fund is subject to a number of risks, as described below, that may affect the value of its shares, including the possible loss of money. As with any fund, there is no guarantee that the Fund will achieve its investment objective.

 

American Depositary Receipt Risk. ADRs have the same currency and economic risks as the underlying non-U.S. shares they represent. They are affected by the risks associated with non-U.S. securities, such as changes in political or economic conditions of other countries, changes in the exchange rates of, or exchange control regulations associated with, foreign currencies, and differing accounting, auditing, financial reporting and legal standards and practices. In addition, investments in ADRs may be less liquid than the underlying securities in their primary trading market.

 

Closed-End Fund Risk. Secondary market trading prices of closed-end funds should be expected to fluctuate and such prices may be higher or lower than the net asset value (“NAV”) of a closed-end fund’s portfolio holdings. There can be no guarantee that shares of a closed-end held by the Fund will not trade at a persistent and ongoing discount. Nor can there be any guarantee that an active market in shares of closed-end funds held by the Fund will exist. The Fund may not be able to sell closed-end fund shares at a price equal to the NAV of the closed-end fund.

 

Equity Risk. The prices of equity securities in which the Fund holds positions may rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole.

 

Exchange-Traded Product Risk. The Fund may invest in certain ETPs. Through its positions in ETPs, the Fund will be subject to the risks associated with such ETPs’ investments, or reference assets in the case of ETNs, including the possibility that the value of the securities or instruments held by an ETP or an ETN’s reference assets could decrease (or increase in the case of short positions). An ETP’s lack of liquidity can result in its value being more volatile than the underlying portfolio investment or reference asset. In addition, certain of the ETPs may hold common portfolio positions, thereby reducing any diversification benefits.

 

Exchange-Traded Note Risk. ETNs are senior, unsecured, unsubordinated debt securities issued by an underwriting bank that are designed to provide returns that are linked to a particular benchmark less investor fees. ETNs have a maturity date and, generally, are backed only by the creditworthiness of the issuer. As a result, the value of an ETN may be influenced by time to maturity, level of supply and demand for the ETN, volatility and lack of liquidity in the underlying market (e.g., the commodities market), changes in the applicable interest rates, and changes in the issuer’s credit rating and economic, legal, political or geographic events that affect the referenced market. ETNs also may be subject to commodities market risk and credit risk.

 

Foreign Investment Risk. The Fund’s investments in securities of foreign issuers, including ADRs, may involve certain risks that are greater than those associated with investments in securities of U.S. issuers. These include risks of adverse changes in foreign economic, political, regulatory and other conditions; changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges); differing accounting, auditing, financial reporting and legal standards and practices; differing securities market structures; and higher transaction costs.

 

Liquidity Risk. Liquidity risk exists when particular Fund investments are difficult to purchase or sell. This can reduce the Fund’s returns because the Fund may be unable to transact at advantageous times or prices.

 

Management Risk. The Sub-Advisor continuously evaluates the Fund’s holdings, purchases and sales with a view to achieving the Fund’s investment objective. However, the achievement of the stated investment objective cannot be guaranteed over short- or long-term market cycles. The Sub-Advisor’s judgments about the markets, the economy, or companies may not anticipate actual market movements, economic conditions or company performance, and these judgments may affect the return on your investment.

 

Market Risk. Due to market conditions, the value of the Fund’s investments may fluctuate significantly from day to day. Price fluctuations may be temporary or may last for extended periods. This volatility may cause the value of your investment in the Fund to decrease.

 

Portfolio Turnover Risk. The Fund may experience relatively high portfolio turnover, which may result in increased transaction costs and Fund performance that is lower than expected.

 

Real Estate Investment Trust Risk. The Fund’s investments in REITs will be subject to the risks associated with the direct ownership of real estate. Risks commonly associated with the direct ownership of real estate include fluctuations in the value of underlying properties, defaults by borrowers or tenants, changes in interest rates and risks related to general or local economic conditions.

 

Trading Risk. Shares of the Fund may trade above or below their net asset value (“NAV”). The trading price of the Fund’s shares may deviate significantly from their NAV during periods of market volatility. There can be no assurance that an active trading market for the Fund’s shares will develop or be maintained. In addition, trading in shares of the Fund may be halted because of market conditions or for reasons that, in the view of the NYSE Arca, Inc. (the “Exchange”), make trading in shares inadvisable.
Risk Lose Money [Text] rr_RiskLoseMoney

The Fund is subject to a number of risks, as described below, that may affect the value of its shares, including the possible loss of money.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

FUND PERFORMANCE
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The bar chart and table that follow show how the Fund has performed on a calendar year basis and provide an indication of the risks of investing in the Fund. The table also shows how the Fund’s performance compares to the MSCI All Country World Index, which is an unmanaged free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed and emerging markets. Both the bar chart and the table assume the reinvestment of all dividends and distributions. 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.advisorshares.com.
Performance Additional Market Index [Text] rr_PerformanceAdditionalMarketIndex

The table also shows how the Fund’s performance compares to the MSCI All Country World Index, which is an unmanaged free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed and emerging markets.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress

www.advisorshares.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Annual Return Caption [Text] rr_AnnualReturnCaption

Return
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

The Fund’s year-to-date total return as of September 30, 2016 was 17.26%.

 

Best and Worst Quarter Returns (for the period reflected in the bar chart above)

           
    Return     Quarter/Year
Highest Return   -1.95 %    Q2/2015
Lowest Return   -16.63 %    Q3/2015
Year to Date Return, Label rr_YearToDateReturnLabel

total return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2016
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 17.26%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel

Highest Return
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2015
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn (1.95%)
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel

Lowest Return
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2015
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (16.63%)
Performance Table Heading rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDED DECEMBER 31, 2015 
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest historical 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 depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher

In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
AdvisorShares Athena High Dividend ETF (Prospectus Summary) | AdvisorShares Athena High Dividend ETF | MSCI All Country World Index  
Prospectus [Line Items] rr_ProspectusLineItems  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes

Reflects no deduction for fees, expenses, or taxes
Label rr_AverageAnnualReturnLabel

MSCI All Country World Index (Reflects no deduction for fees, expenses, or taxes)
1 Year rr_AverageAnnualReturnYear01 (2.36%)
Since Inception rr_AverageAnnualReturnSinceInception (3.29%)
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 29, 2014
AdvisorShares Athena High Dividend ETF (Prospectus Summary) | AdvisorShares Athena High Dividend ETF | AdvisorShares Athena High Dividend ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
MANAGEMENT FEES rr_ManagementFeesOverAssets 0.80%
DISTRIBUTION (12b-1) FEES rr_DistributionAndService12b1FeesOverAssets none
OTHER EXPENSES rr_OtherExpensesOverAssets 0.96%
TOTAL ANNUAL OPERATING EXPENSES rr_ExpensesOverAssets 1.76%
FEE WAIVER/EXPENSE REIMBURSEMENT rr_FeeWaiverOrReimbursementOverAssets (0.77%) [1]
TOTAL ANNUAL OPERATING EXPENSES AFTER FEE WAIVER/EXPENSE REIMBURSEMENT rr_NetExpensesOverAssets 0.99%
1 Year rr_ExpenseExampleYear01 $ 101
3 Years rr_ExpenseExampleYear03 479
5 Years rr_ExpenseExampleYear05 882
10 Years rr_ExpenseExampleYear10 $ 2,009
Annual Return 2015 rr_AnnualReturn2015 (25.18%)
Label rr_AverageAnnualReturnLabel

Return Before Taxes Based on NAV
1 Year rr_AverageAnnualReturnYear01 (25.18%)
Since Inception rr_AverageAnnualReturnSinceInception (27.96%)
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 29, 2014
AdvisorShares Athena High Dividend ETF (Prospectus Summary) | AdvisorShares Athena High Dividend ETF | AdvisorShares Athena High Dividend ETF | After Taxes on Distributions  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel

Return After Taxes on Distributions
1 Year rr_AverageAnnualReturnYear01 (26.32%) [2]
Since Inception rr_AverageAnnualReturnSinceInception (28.92%) [2]
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 29, 2014 [2]
AdvisorShares Athena High Dividend ETF (Prospectus Summary) | AdvisorShares Athena High Dividend ETF | AdvisorShares Athena High Dividend ETF | After Taxes on Distributions and Sales  
Prospectus [Line Items] rr_ProspectusLineItems  
Label rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 (13.97%) [2]
Since Inception rr_AverageAnnualReturnSinceInception (21.09%) [2]
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 29, 2014 [2]
[1] AdvisorShares Investments, LLC (the "Advisor") has contractually agreed to reduce its fees and/or reimburse expenses to keep net expenses (excluding amounts payable pursuant to any plan adopted in accordance with Rule 12b-1, interest expense, taxes, brokerage commissions, acquired fund fees and expenses, other expenditures which are capitalized in accordance with generally accepted accounting principles, and extraordinary expenses) from exceeding 0.99% of the Fund's average daily net assets for at least one year from the date of this Prospectus. The expense limitation agreement may be terminated, without payment of any penalty, (i) by the Trust for any reason and at any time and (ii) by the Advisor, for any reason, upon ninety (90) days' prior written notice to the Trust, such termination to be effective as of the close of business on the last day of the then-current one-year period.
[2] After-tax returns are calculated using the highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts. In some cases the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.