485BPOS

As filed with the Securities and Exchange Commission on November 14, 2013

Securities Act File No. File Nos. 333-157876

Investment Company File No. 811-22110

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	[X]
Pre-Effective Amendment No.	[    ]
Post-Effective Amendment No. 87	[X]
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	[X]
Amendment No. 89	[X]
(Check appropriate box or boxes)

AdvisorShares Trust

(Exact Name of Registrant as Specified in Charter)

2 Bethesda Metro Center, Suite 1330

Bethesda, Maryland 20814

(Address of Principal Executive Offices) (Zip Code)

Registrant's Telephone Number, including Area Code: (877) 843-3831

Noah Hamman

AdvisorShares Trust

2 Bethesda Metro Center, Suite 1330

Bethesda, Maryland 20814

(Name and Address of Agent for Service)

Copy to: W. John McGuire, Esq.

Bingham McCutchen LLP

2020 K Street NW

Washington, DC 20006

It is proposed that this filing will become effective: (check appropriate box)

[X] immediately upon filing pursuant to paragraph (b) of Rule 485

[   ] on (date) pursuant to paragraph (b)(1)(v) of Rule 485

[   ] 60 days after filing pursuant to paragraph (a) (1) of Rule 485

[   ] on (date) pursuant to paragraph (a)(1) of Rule 485

[   ] 75 days after filing pursuant to paragraph (a)(2) of Rule 485

[   ] on (date) pursuant to paragraph (a)(2) of Rule 485

EXPLANATORY NOTE

This Post-Effective Amendment No. 87 relates solely to the Accuvest Global Long Short ETF, Accuvest Global Opportunities ETF, Cambria Global Tactical ETF, Global Alpha & Beta ETF, Global Echo ETF, Madrona Domestic ETF, Madrona Global Bond ETF, Madrona International ETF, Meidell Tactical Advantage ETF, Newfleet Multi-Sector Income ETF, Peritus High Yield ETF, Pring Turner Business Cycle ETF, QAM Equity Hedge ETF, Ranger Equity Bear ETF, STAR Global Buy-Write ETF, TrimTabs Float Shrink ETF, and WCM/BNY Mellon Focused Growth ADR ETF.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 (the “Securities Act”) and the Investment Company Act of 1940, the Trust certifies that it meets all of the requirements for effectiveness of this Registration Statement under Rule 485(b) under the Securities Act and has duly caused this Post-Effective Amendment No. 87 to Registration Statement No. 333-157876 to be signed on its behalf by the undersigned, duly authorized, in the City of Bethesda, State of Maryland on this 14th day of November, 2013.

AdvisorShares Trust

/s/ Noah Hamman

Noah Hamman

Chairman of the Board of Trustees,

Chief Executive Officer and President

Pursuant to the requirements of the Securities Act, this Post-Effective Amendment No. 87 to the Registration Statement has been signed below by the following persons in the capacity and on the date indicated.

Signature	Title	Date
/s/ Noah Hamman	Chief Executive Officer and	November 14, 2013
Noah Hamman	President
*	Trustee	November 14, 2013
Elizabeth Piper/Bach
*	Trustee	November 14, 2013
William G. McVay
*	Treasurer	November 14, 2013
Dan Ahrens

/s/ Noah Hamman

* Noah Hamman, Power of Attorney

Exhibit No.	Description
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxomony Extension Presentation Linkbase

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AdvisorShares TrimTabs Float Shrink ETF (Prospectus Summary) | AdvisorShares TrimTabs Float Shrink ETF

TRIMTABS FLOAT SHRINK ETF (NYSE Arca Ticker: TTFS)

INVESTMENT OBJECTIVE

TrimTabs Float Shrink ETF (the “Fund”) seeks to generate long-term returns in excess of the total return of the Russell 3000^® Index (the “Index”), with less volatility than the Index.

FUND FEES AND EXPENSES

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 (fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares TrimTabs Float Shrink ETF
MANAGEMENT FEES		0.99%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		0.91%
TOTAL ANNUAL FUND OPERATING EXPENSES		1.90%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[1]	0.91%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT		0.99%

EXAMPLE

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 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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares TrimTabs Float Shrink ETF	101	509	943	2,150

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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, 2013, the Fund's portfolio turnover rate was 57% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund is an actively managed exchange-traded fund (“ETF”) that seeks to achieve its investment objective by primarily investing in the broad U.S. equity market, as represented by the Index. The Fund seeks to achieve this goal by investing in stocks with liquidity and fundamental characteristics that are historically associated with superior long-term performance. Based on extensive historical research, Trim Tabs Asset Management, LLC (the “Sub-Advisor”) designed the following quantitative stock selection rules to make allocation decisions and to protect against dramatic over or under weighting of individual securities in the Fund's portfolio.

Decile Ranking of Russell 3000^® Index Stocks. The Sub-Advisor ranks stocks in the Index by decile based on the following criteria:

(i) the decrease in their outstanding shares over approximately the past 120 days (“float shrink”),

(ii) the increase in free cash flow (the money available to the company that is not used to pay for its daily operations) over approximately the past 120 days, and

(iii) the decrease in leverage over approximately the past 120 days. Leverage is measured as the ratio of total liabilities to total assets. The Sub-Advisor uses the relative decrease in leverage rather than amount of leverage itself as a criterion because the degree of leverage varies across industries.

The top decile of each respective ranking consists of the stocks of the companies with (1) the strongest reduction in shares outstanding, (2) the strongest growth in free cash flow, and (3) the largest decrease in leverage, respectively.

Stock Selection Algorithm. The Sub-Advisor uses an algorithm to give a relative weight to the three decile rankings, combining them in a single ranking (combined ranking). The algorithm places a higher weight on the float shrink ranking, followed by the free cash flow ranking, followed by the leverage ranking. The Fund under normal circumstances invests in 80 to 120 stocks from among the tenth percentile of stocks with the highest combined ranking.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Large-Capitalization Securities Risk. The Fund may invest in large-capitalization companies. Large- capitalization securities tend to go in and out of favor based on market and economic conditions. During a period when the demand for large-capitalization securities is less than for other types of investments - small-capitalization securities, for instance - the Fund's performance could be reduced.

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. 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 Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Mid-Capitalization Securities Risk. The Fund may invest in mid-capitalization companies. Mid-size companies may be more volatile and more likely than large-capitalization companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid-size companies could trail the returns on investments in stocks of larger or smaller companies.

Premium-Discount Risk. The Fund's shares may trade above or below their net asset value (“NAV”). The trading price of the Fund's shares may deviate significantly from their net asset value during periods of market volatility.

Small-Capitalization Securities Risk. The Fund may invest in small-capitalization companies. Security prices of small capitalization companies may be more volatile than those of larger companies and therefore the Fund's share price may be more volatile than those of funds that invest a larger percentage of their assets in securities issued by larger-capitalization companies.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

The bar chart and table that follow show how the Fund has performed on a calendar year basis and provides an indication of the risks of investing in the Fund. The table also shows how the Fund's performance compares to the Index, which measures the performance of the largest 3,000 U.S. companies representing approximately 98% of the investable U.S. equity market. 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.

Return

The Fund's year-to-date total return as of September 30, 2013 was 28.69%.

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

	Return	Quarter/Year
Highest Return	13.04%	1Q/2012
Lowest Return	-1.69%	2Q/2012

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

Average Annual Total Returns	Label		1 Year	Since Inception	Inception Date
AdvisorShares TrimTabs Float Shrink ETF	Return Before Taxes Based on NAV		15.50%	24.78%	Oct. 04, 2011
AdvisorShares TrimTabs Float Shrink ETF After Taxes on Distributions	Return After Taxes on Distributions	[1]	15.29%	24.58%	Oct. 04, 2011
AdvisorShares TrimTabs Float Shrink ETF After Taxes on Distributions and Sales	Return After Taxes on Distributions and Sale of Fund Shares	[1]	10.26%	21.10%	Oct. 04, 2011
AdvisorShares TrimTabs Float Shrink ETF Russell 3000 Index	Russell 3000 Index (Reflects no deduction for fees, expenses, or taxes)		16.42%	24.56%	Oct. 04, 2011

[1] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[1] 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-deferred 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.

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AdvisorShares Peritus High Yield ETF (Prospectus Summary) | AdvisorShares Peritus High Yield ETF

PERITUS HIGH YIELD ETF (NYSE Arca Ticker: HYLD)

INVESTMENT OBJECTIVE

The Peritus High Yield ETF (the “Fund”) seeks high current income with a secondary goal of capital appreciation.

FUND FEES AND EXPENSES 

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 (fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Peritus High Yield ETF
MANAGEMENT FEES		1.10%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		0.13%
TOTAL ANNUAL FUND OPERATING EXPENSES		1.23%
FEE WAIVER/EXPENSE REIMBURSEMENT OR RECAPTURED EXPENSE	[1]	(0.02%)
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER/EXPENSE REIMBURSEMENT OR RECAPTURED EXPENSE		1.25%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Peritus High Yield ETF	128	394	680	1,496

PORTFOLIO TURNOVER 

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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, 2013, the Fund's portfolio turnover rate was 37% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES 

Peritus I Asset Management, LLC (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by selecting a focused portfolio of high-yield debt securities (commonly referred to as “junk bonds”), which include senior and subordinated corporate debt obligations (such as loans, bonds, debentures, notes and commercial paper). The Fund does not have any portfolio maturity limitation and may invest its assets in instruments with short-term, medium-term or long-term maturities. The Fund also may invest, to a lesser extent, in equity securities that the Sub-Advisor believes will yield high dividends or are otherwise consistent with the Fund's investment objective.

In selecting securities for the Fund's portfolio, the Sub-Advisor, subject to the oversight of the Advisor and the Board, performs an independent investment analysis of each issuer to determine its creditworthiness. The Sub-Advisor takes a deep value contrarian approach to the credit markets, foregoing relative value and new issue participation in favor of absolute returns. The Sub-Advisor focuses on the secondary market, predominantly investing in assets at a discount to par ($100), allowing for a potential opportunity to generate capital gains in addition to current yield. The Sub-Advisor believes that structural and technical inefficiencies exist in the secondary credit markets, which create tremendous investment opportunities, and that, by holding a diversified but limited number of securities, the portfolio will be constructed of securities that provide exposure to industries believed to offer the most value to the Fund.

PRINCIPAL RISKS OF INVESTING IN THE FUND 

The Fund is subject to a number of risks that may affect the value of its shares, including:

Credit Risk. The Fund is subject to the risk that an issuer of a fixed income security, such as a corporate bond, may be unable or unwilling to make interest and principal payments when due. The Fund is also subject to the related risk that the value of a fixed income security may decline because of concerns about the issuer's creditworthiness. Credit risk is heightened to the extent the Fund invests in high-yield securities or junk bonds.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Fixed Income Risk. The market value of fixed income investments in which the Fund may invest may change in response to interest rate changes and other factors. During periods of falling interest rates, the value of outstanding fixed income securities generally rise. Conversely, during periods of rising interest rates, the value of fixed income securities generally decline.

High-Yield Risk. The Fund's investments in high-yield securities and unrated securities of similar credit quality (commonly known as “junk bonds”) may be subject to greater levels of interest rate, credit and liquidity risk than funds that do not invest in such securities. These securities are considered predominately speculative with respect to the issuer's continuing ability to make principal and interest payments.

Issuer Risk. The value of a security may increase for a number of reasons which directly relate to the issuer, such as management performance, improved financial condition and increased demand of the issuer's goods or services. An increase in the value of the securities of an issuer or guarantor of a debt instrument may cause the value of your investment in the Fund to decrease.

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.

Loan Participation Risk. The Fund may not have a readily available market for loan participation interests and, in some cases, the Fund may have to dispose of such securities at a substantial discount from face value. Loan participations also involve the credit risk associated with the underlying corporate borrower.

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. 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. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Prepayment Risk. The Fund may invest in mortgage related securities, which may be paid off early if the borrower on the underlying mortgagee prepays the mortgage or refinances the mortgage prior to the maturity date. If interest rates are falling, the Fund may have to reinvest the unanticipated proceeds at lower interest rates, resulting in a decline in the Fund's income.

Trading Risk. A lthough the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

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 Barclays U.S. Corporate High Yield Index, which is an unmanaged index considered representative of the universe of U.S. fixed rate, non-investment-grade debt. 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.

The Fund's year-to-date total return as of September 30, 2013 was 9.03%.

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

	Return	Quarter/Year
Highest Return	6.89%	1Q/2012
Lowest Return	-7.05%	3Q/2011

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

Average Annual Total Returns	Label		1 Year	Since Inception	Inception Date
AdvisorShares Peritus High Yield ETF	Return Before Taxes Based on NAV		15.11%	8.61%	Nov. 30, 2010
AdvisorShares Peritus High Yield ETF After Taxes on Distributions	Return After Taxes on Distributions	[1]	11.75%	5.49%	Nov. 30, 2010
AdvisorShares Peritus High Yield ETF After Taxes on Distributions and Sales	Return After Taxes on Distributions and Sale of Fund Shares	[1]	9.71%	5.49%	Nov. 30, 2010
AdvisorShares Peritus High Yield ETF Barclays U.S. Corporate High Yield Index	Barclays U.S. Corporate High Yield Index (Reflects no deduction for fees, expenses, or taxes)		15.81%	10.78%	Nov. 30, 2010

[1] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.35% of the Fund's average daily net assets for at least a year from the date of this Prospectus. Pursuant to the expense limitation agreement, the Advisor is entitled to recapture any fees the Advisor waives and Fund expenses the Advisor reimburses until the third anniversary of the end of the fiscal year in which such waiver and/or reimbursement occurs, to the extent that such recapture by the Advisor will not cause the Fund to exceed the applicable expense limitation in place for the Fund. 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[1] 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-deferred 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.

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AdvisorShares Pring Turner Business Cycle ETF (Prospectus Summary) | AdvisorShares Pring Turner Business Cycle ETF

Pring Turner Business Cycle ETF (NYSE Arca Ticker: DBIZ)

INVESTMENT OBJECTIVE 

The Pring Turner Business Cycle ETF (the “Fund”) seeks long-term total return from capital appreciation and income.

FUND FEES AND EXPENSES

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(fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Pring Turner Business Cycle ETF
MANAGEMENT FEES		1.00%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		3.70%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.12%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	4.82%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[3]	3.21%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[2]	1.61%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Pring Turner Business Cycle ETF	164	1,162	2,164	4,685

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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. For the period from December 18, 2012, the Fund's commencement of operations, through the most recent fiscal year ended June 30, 2013, the Fund's portfolio turnover rate was 26% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The overriding investment goal of the Fund is to protect the value of the Fund's portfolio during unfavorable market conditions and to grow the value of the Fund's portfolio in favorable market conditions. Utilizing its proprietary business cycle research, Pring Turner Capital Group (the “Sub-Advisor”) proactively changes the Fund's asset allocation and sector emphasis in seeking to minimize the Fund's portfolio risk and to optimize portfolio returns throughout the business cycle. The Sub-Advisor will invest the Fund's portfolio in securities that provide diversified exposure to the three primary asset classes (i.e., stocks, bonds and commodities) across a wide range of economic sectors.

In seeking its objective, the Fund may invest in U.S. and foreign equity securities, including common and preferred stock, American Depositary Receipts (“ADRs”), high quality corporate debt securities (rated BBB or higher), affiliated and unaffiliated exchange-traded funds (“ETFs”), exchange-traded notes (“ETNs”), and cash and cash equivalents. The Fund may invest in securities of any capitalization range and in any market sector at any time as necessary to seek to achieve the Fund's investment objective.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

American Depositary Receipt (ADR) 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 and changes in the exchange rates of foreign currencies. In addition, investments in ADRs may be less liquid than the underlying securities in their primary trading market.

Commodities Risk. The Fund's exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities and commodity-linked financial instruments to which the Fund may be exposed may be affected by a variety of factors, including natural disasters and political and regulatory developments.

Credit Risk. The Fund is subject to the risk that an issuer of a fixed income security, such as a corporate bond, may be unable or unwilling to make interest and principal payments when due. The Fund is also subject to the related risk that the value of a fixed income security may decline because of concerns about the issuer's creditworthiness. Credit risk is heightened to the extent the Fund invests in high-yield securities or junk bonds.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time. 

Exchange-Traded Vehicle Risk. The Fund may invest in (or short) ETFs, ETNs and other exchange-traded products (collectively, “ETPs”). Through its positions in ETPs, the Fund will be subject to the risks associated with such ETP's 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 (ETN) 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.

Fixed Income Risk. The market value of fixed income investments in which the Fund may invest may change in response to interest rate changes and other factors. During periods of falling interest rates, the value of outstanding fixed income securities generally rise. Conversely, during periods of rising interest rates, the value of fixed income securities generally decline.

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.

Investment Risk. As with all investments, an investment in the Fund is subject to investment risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or even long periods of time.

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. The Sub-Advisor's judgment 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. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Tax Risk. In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.  

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Fund Performance

A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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.

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and certain exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include 'Acquired Fund Fees and Expenses.'

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.49% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Entity Central Index Key

dei_EntityCentralIndexKey

0001408970

AdvisorShares Madrona Domestic ETF (Prospectus Summary) | AdvisorShares Madrona Domestic ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

MADRONA DOMESTIC ETF (NYSE Arca Ticker: FWDD)

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Madrona Domestic ETF (the “Fund”) seeks to provide long-term capital appreciation above the capital appreciation of its benchmark, the S&P 500 Index.

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 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 Fund 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, 2013, the Fund's portfolio turnover rate was 33% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

33.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

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

 Madrona Funds, LLC (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by selecting a portfolio of up to 500 of the largest U.S.-traded equity securities. The Sub-Advisor selects the securities for the Fund's portfolio using a weighted allocation system based on consensus analyst estimates of the present value of future expected earnings relative to the share price of each security. The Sub-Advisor's investment committee meets on a bi-weekly basis to monitor the portfolio and make allocation decisions. The investment committee uses third-party analyst research and a proprietary fundamental process to make allocation decisions and employs guidelines to protect against dramatic over or under weighting of individual securities in the Fund's portfolio. The investment committee relies heavily on a stock's price and market capitalization relative to its future expected earnings in its analysis of individual securities.

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 that may affect the value of its shares, including:

Early Closing Risk.  An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Large-Capitalization Securities Risk. The Fund may invest in large-capitalization companies. Large-capitalization securities tend to go in and out of favor based on market and economic conditions. During a period when the demand for large-capitalization securities is less than for other types of investments - small-capitalization securities, for instance - the Fund's performance could be reduced.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

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 S&P 500 Index, which is a broad-based, unmanaged measurement of changes in stock market conditions based on the average of 500 widely held common stocks. 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 Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

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.

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund's year-to-date total return as of September 30, 2013 was 25.88%.

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

	Return	Quarter/Year
Highest Return	14.83%	1Q/2012
Lowest Return	-6.08%	2Q/2012

Performance Table Heading

rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

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

rr_IndexNoDeductionForFeesExpensesTaxes

Reflects no deduction for fees, expenses, or taxes

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-deferred 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 Madrona Domestic ETF (Prospectus Summary) | AdvisorShares Madrona Domestic ETF | S&P 500 Index

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500 Index (Reflects no deduction for fees, expenses, or taxes)

1 Year

rr_AverageAnnualReturnYear01

16.00%

Since Inception

rr_AverageAnnualReturnSinceInception

9.85%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

AdvisorShares Madrona Domestic ETF (Prospectus Summary) | AdvisorShares Madrona Domestic ETF | AdvisorShares Madrona Domestic ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

0.80%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

0.81%

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

1.61%

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

0.36%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

1.25%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 128

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

474

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

843

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,883

Annual Return 2012

rr_AnnualReturn2012

18.28%

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

25.88%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

14.83%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2012

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(6.08%)

Label

rr_AverageAnnualReturnLabel

Return Before Taxes Based on NAV

1 Year

rr_AverageAnnualReturnYear01

18.28%

Since Inception

rr_AverageAnnualReturnSinceInception

7.27%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

AdvisorShares Madrona Domestic ETF (Prospectus Summary) | AdvisorShares Madrona Domestic ETF | AdvisorShares Madrona Domestic ETF | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

^[2]

1 Year

rr_AverageAnnualReturnYear01

18.19%

Since Inception

rr_AverageAnnualReturnSinceInception

7.19%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

AdvisorShares Madrona Domestic ETF (Prospectus Summary) | AdvisorShares Madrona Domestic ETF | AdvisorShares Madrona Domestic ETF | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

^[2]

1 Year

rr_AverageAnnualReturnYear01

11.99%

Since Inception

rr_AverageAnnualReturnSinceInception

6.19%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

[1] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses to keep the Fund's Total Annual Fund Operating 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 1.25% of the Fund's average daily net assets for at least a 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 at its principal place of business, 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-deferred 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.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Entity Central Index Key

dei_EntityCentralIndexKey

0001408970

AdvisorShares TrimTabs Float Shrink ETF (Prospectus Summary) | AdvisorShares TrimTabs Float Shrink ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

TRIMTABS FLOAT SHRINK ETF (NYSE Arca Ticker: TTFS)

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

TrimTabs Float Shrink ETF (the “Fund”) seeks to generate long-term returns in excess of the total return of the Russell 3000^® Index (the “Index”), with less volatility than the Index.

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 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. 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, 2013, the Fund's portfolio turnover rate was 57% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

57.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

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 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 is an actively managed exchange-traded fund (“ETF”) that seeks to achieve its investment objective by primarily investing in the broad U.S. equity market, as represented by the Index. The Fund seeks to achieve this goal by investing in stocks with liquidity and fundamental characteristics that are historically associated with superior long-term performance. Based on extensive historical research, Trim Tabs Asset Management, LLC (the “Sub-Advisor”) designed the following quantitative stock selection rules to make allocation decisions and to protect against dramatic over or under weighting of individual securities in the Fund's portfolio.

Decile Ranking of Russell 3000^® Index Stocks. The Sub-Advisor ranks stocks in the Index by decile based on the following criteria:

(i) the decrease in their outstanding shares over approximately the past 120 days (“float shrink”),

(ii) the increase in free cash flow (the money available to the company that is not used to pay for its daily operations) over approximately the past 120 days, and

(iii) the decrease in leverage over approximately the past 120 days. Leverage is measured as the ratio of total liabilities to total assets. The Sub-Advisor uses the relative decrease in leverage rather than amount of leverage itself as a criterion because the degree of leverage varies across industries.

The top decile of each respective ranking consists of the stocks of the companies with (1) the strongest reduction in shares outstanding, (2) the strongest growth in free cash flow, and (3) the largest decrease in leverage, respectively.

Stock Selection Algorithm. The Sub-Advisor uses an algorithm to give a relative weight to the three decile rankings, combining them in a single ranking (combined ranking). The algorithm places a higher weight on the float shrink ranking, followed by the free cash flow ranking, followed by the leverage ranking. The Fund under normal circumstances invests in 80 to 120 stocks from among the tenth percentile of stocks with the highest combined ranking.

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 that may affect the value of its shares, including:

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Large-Capitalization Securities Risk. The Fund may invest in large-capitalization companies. Large- capitalization securities tend to go in and out of favor based on market and economic conditions. During a period when the demand for large-capitalization securities is less than for other types of investments - small-capitalization securities, for instance - the Fund's performance could be reduced.

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. 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 Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Mid-Capitalization Securities Risk. The Fund may invest in mid-capitalization companies. Mid-size companies may be more volatile and more likely than large-capitalization companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid-size companies could trail the returns on investments in stocks of larger or smaller companies.

Premium-Discount Risk. The Fund's shares may trade above or below their net asset value (“NAV”). The trading price of the Fund's shares may deviate significantly from their net asset value during periods of market volatility.

Small-Capitalization Securities Risk. The Fund may invest in small-capitalization companies. Security prices of small capitalization companies may be more volatile than those of larger companies and therefore the Fund's share price may be more volatile than those of funds that invest a larger percentage of their assets in securities issued by larger-capitalization companies.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

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 provides an indication of the risks of investing in the Fund. The table also shows how the Fund's performance compares to the Index, which measures the performance of the largest 3,000 U.S. companies representing approximately 98% of the investable U.S. equity market. 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 Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table that follow show how the Fund has performed on a calendar year basis and provides an indication of the risks of investing in the Fund.

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.

Bar Chart [Heading]

rr_BarChartHeading

Return

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund's year-to-date total return as of September 30, 2013 was 28.69%.

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

	Return	Quarter/Year
Highest Return	13.04%	1Q/2012
Lowest Return	-1.69%	2Q/2012

Performance Table Heading

rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

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

rr_IndexNoDeductionForFeesExpensesTaxes

Reflects no deduction for fees, expenses, or taxes

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-deferred 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 TrimTabs Float Shrink ETF (Prospectus Summary) | AdvisorShares TrimTabs Float Shrink ETF | Russell 3000 Index

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Russell 3000 Index (Reflects no deduction for fees, expenses, or taxes)

1 Year

rr_AverageAnnualReturnYear01

16.42%

Since Inception

rr_AverageAnnualReturnSinceInception

24.56%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 04, 2011

AdvisorShares TrimTabs Float Shrink ETF (Prospectus Summary) | AdvisorShares TrimTabs Float Shrink ETF | AdvisorShares TrimTabs Float Shrink ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

0.99%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

0.91%

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

1.90%

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

0.91%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

0.99%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 101

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

509

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

943

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 2,150

Annual Return 2012

rr_AnnualReturn2012

15.50%

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

28.69%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.04%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2012

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(1.69%)

Label

rr_AverageAnnualReturnLabel

Return Before Taxes Based on NAV

1 Year

rr_AverageAnnualReturnYear01

15.50%

Since Inception

rr_AverageAnnualReturnSinceInception

24.78%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 04, 2011

AdvisorShares TrimTabs Float Shrink ETF (Prospectus Summary) | AdvisorShares TrimTabs Float Shrink ETF | AdvisorShares TrimTabs Float Shrink ETF | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

^[2]

1 Year

rr_AverageAnnualReturnYear01

15.29%

Since Inception

rr_AverageAnnualReturnSinceInception

24.58%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 04, 2011

AdvisorShares TrimTabs Float Shrink ETF (Prospectus Summary) | AdvisorShares TrimTabs Float Shrink ETF | AdvisorShares TrimTabs Float Shrink ETF | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

^[2]

1 Year

rr_AverageAnnualReturnYear01

10.26%

Since Inception

rr_AverageAnnualReturnSinceInception

21.10%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 04, 2011

[1] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 a 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 at its principal place of business, 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-deferred 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.

XML

AdvisorShares QAM Equity Hedge ETF (Prospectus Summary) | AdvisorShares QAM Equity Hedge ETF

QAM EQUITY HEDGE ETF (NYSE Arca Ticker: QEH)

INVESTMENT OBJECTIVE

The QAM Equity Hedge ETF (the “Fund”) seeks investment results that exceed the risk adjusted performance of approximately 50% of the long/short equity hedge fund universe as defined by the HFRI Equity Hedge (Total) Index constituents.

FUND FEES AND EXPENSES

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 (fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares QAM Equity Hedge ETF
MANAGEMENT FEES		1.00%
DISTRIBUTION (12b-1) FEES		none
TOTAL OTHER EXPENSES		3.61%
Short Interest Expense		0.07%
Other Expenses		3.54%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.08%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	4.69%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[3]	3.04%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[2]	1.65%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares QAM Equity Hedge ETF	168	1,141	2,120	4,594

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund's capital shares. For the period from August 7, 2012, the Fund's commencement of operations, through the most recent fiscal year ended June 30, 2013, the Fund's portfolio turnover rate was 114% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund is a ‘‘fund of funds'' that seeks to achieve its investment objective by investing primarily in both long and short positions in other exchange-traded funds (“ETFs'') and exchange-traded notes (“ETNs”) that offer diversified exposure to global regions, countries, investment styles (i.e., value, growth), sectors and industries. Commerce Asset Management, LLC (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by taking long and short positions in ETFs and ETNs that the Sub-Advisor believes, in the aggregate, will track the performance of a selected universe of long/short equity hedge funds.

Long/short equity hedge funds typically buy stocks, ETFs, ETNs or currencies that the hedge fund managers expect will appreciate, and concurrently either sell short stocks, ETFs, ETNs or currencies that the hedge fund managers expect will decline in value or to hedge market or sector exposures.

In seeking to establish a long or short position in such instruments, the Fund may use swaps based on published indices, including international indices. The Fund also may invest in exchange-traded currency trusts (collectively, with ETFs and ETNs, (“ETPs”)). 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 to collateralize its derivative positions.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETPs and the allocation of assets among such ETPs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

Counterparty Credit Risk. The Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Fund's use of such financial instruments, including swap agreements, exposes the Fund to risks that are different than those associated with direct investments in portfolio securities. For example, if a swap agreement counterparty defaults on its payment obligations to the Fund, this default will cause the value of your investment in the Fund to decrease. Swap agreements also may be considered to be illiquid.

Credit Risk. The Fund could lose money if the issuer or guarantor of a debt instrument in which the Fund invests becomes unwilling or unable to make timely principal and/or interest payments, or to otherwise meet its obligations.

Derivatives Risk. The Fund intends to invest in derivatives to a significant extent. Derivatives may be riskier than other types of investments because they may be more sensitive to changes in economic or market conditions than other types of investments and could result in losses that significantly exceed the Fund's original investment. A derivative is a financial contract the value of which depends on, or is derived from, the value of a financial asset (such as stock, bond or currency), a physical asset (such as gold) or a market index (such as the S&P 500 Index). Many derivatives (including option contracts) create leverage thereby causing the Fund to be more volatile than it would be if it had not invested in derivatives. Derivatives also expose the Fund to counterparty risk (the risk that the derivative counterparty will not fulfill its contractual obligations) and to credit risk.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities in which the Fund invests rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

ETN 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.

Investment Risk. As with all investments, an investment in the Fund is subject to investment risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or even long periods of time.

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.

Market Risk. Due to market conditions, the value of the Fund's investments may fluctuate significantly from day to day. 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 lower Fund performance.

Premium-Discount Risk. The Fund's shares 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.

Short Sales Risk. Short sales are transactions in which the Fund sells a security it does not own. To complete the transaction, the Fund must borrow the security to make delivery to the buyer. The Fund is then obligated to replace the security borrowed by purchasing the security at the market price at the time of replacement. The price at such time may be higher or lower than the price at which the security was sold by the Fund. If the underlying security goes down in price between the time the Fund sells the security and buys it back, the Fund will realize a gain on the transaction. Conversely, if the underlying security goes up in price during the period, the Fund will realize a loss on the transaction. Any such loss is increased by the amount of premium or interest the Fund must pay to the lender of the security. Likewise, any gain will be decreased by the amount of premium or interest the Fund must pay to the lender of the security. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. Short sales involve leverage because the Fund borrows securities and then sells them, effectively leveraging its assets. The use of leverage may magnify gains or losses for the Fund.

Tax Risk. In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in ETPs, the Fund will be subject to the risks associated with such investment vehicles' investments, or reference assets in the case of ETNs, including the possibility that the value of the securities or instruments held or tracked by an ETP could decrease. These risks include any combination of the risks described below, as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the ETPs and their exposure to various security types, currencies, market sectors, and geographic regions.

·Commodity Risk. Because certain ETPs may have a significant portion of their assets exposed directly or indirectly to commodities or commodity-linked securities, developments affecting commodities may have a disproportionate impact on such ETPs. An ETP's investment in commodities or commodity-linked derivative instruments may subject the ETP (and indirectly the Fund) to greater volatility than investments in traditional securities, particularly if the instruments involve leverage. The value of commodities and commodity-linked derivative instruments may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments.

·Concentration Risk. An ETP may, at various times, concentrate in the securities or commodities of a particular industry, group of industries, market sector or geographic region. To the extent an ETP's investments are so concentrated, the Fund may be adversely affected by political, regulatory, and market conditions affecting the particular industry, group of industries, market sector or geographic region.

·Counterparty Risk. Commodity-linked derivatives, repurchase agreements, swap agreements and other forms of financial instruments that involve counterparties subject an ETP to the risk that the counterparty could default on its obligations under the agreement, either through the counterparty's bankruptcy or failure to perform its obligations.

·Credit Risk. Certain ETPs are subject to the risk that a decline in the credit quality of a portfolio investment or a counterparty to a portfolio investment could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

·Emerging Markets Risk. There is an increased risk of price volatility associated with an ETP's investments in, or exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

·Equity Risk. The prices of equity securities in which an ETP invests or is exposed to rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

·Foreign Currency Risk. Currency movements may negatively impact the value of an ETP portfolio security even when there is no change in the value of the security in the issuer's home country. Certain ETPs may not hedge against the risk of currency exchange rate fluctuations, while other ETPs may if there is volatility in currency exchange rates.

·Foreign Securities Risk. An ETP's investments in, or exposure to, foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

·Investment Risk. The Fund may experience losses with respect to its investment in an ETP. Further, there is no guarantee that an ETP will achieve its objective.

·Large-Cap Risk. An ETP may invest in large-capitalization companies. Returns on investments in stocks of large U.S. companies could trail the returns on investments in stocks of small- and mid- cap companies or the market as a whole.

·Mid-Cap Risk. An ETP may invest in mid-capitalization companies. Mid-cap companies may be more volatile and more likely than large-cap companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid- cap companies could trail the returns on investments in stocks of large- or small-cap companies or the market as a whole.

·Small-Cap Risk. An ETP may invest in small-capitalization companies. Small-cap companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. In particular, small-cap companies may have limited product lines, markets, and financial resources and may be dependent upon a relatively small management group. These securities may be listed on an exchange or trade over-the-counter, and may or may not pay dividends. During a period when the performance of small-cap stocks falls behind that of other types of investments, such as large-cap stocks, the ETP's performance could be adversely affected.

· Tracking Error Risk. Tracking error can arise due to factors such as the effect of transaction fees and expenses incurred by an ETP, changes in composition of the ETP's benchmark, and the ability of the ETP manager or sponsor to successfully implement his or her investment strategy.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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.

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.50% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Entity Central Index Key

dei_EntityCentralIndexKey

0001408970

AdvisorShares Accuvest Global Long Short ETF (Prospectus Summary) | AdvisorShares Accuvest Global Long Short ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

ACCUVEST GLOBAL LONG SHORT ETF (NYSE Arca Ticker: AGLS)

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Accuvest Global Long Short ETF (the “Fund”) seeks to provide average annual returns in excess of the total return of the MSCI World Index (the “Index”).

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 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. 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, 2013, the Fund's portfolio turnover rate was 270% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

270.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include Acquired Fund Fees and Expenses.

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 is considered a “fund of funds” that seeks to achieve its investment objective by primarily investing in both long and short positions in other exchange-traded funds (the “Underlying ETFs”) that offer diversified exposure to global regions, countries, styles (market capitalization, value, growth, etc.) or sectors, and other exchange-traded products, including, but not limited to, exchange-traded notes (“ETNs”) and exchange-traded currency trusts (collectively with Underlying ETFs, “ETPs”).

Accuvest Global Advisors (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by taking long positions in the Underlying ETFs that invest in what it believes to be the most relatively attractive global regions and countries within those regions and by taking short positions, by entering into short sales, in the Underlying ETFs that invest in what it believes to be the most relatively unattractive global regions and countries within those regions. In establishing such positions, the Fund seeks to profit from the relative performance between the long and short positions in global regions, countries, styles or sectors. From time to time, the Fund may have directional exposure to seek to profit by being net long when stock markets are rising and net short when markets are falling.

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 that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETPs and the allocation of assets among such ETPs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

ETN 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. 

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.

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

Premium-Discount Risk. The Fund's shares 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.

Short Sales Risk. Short sales are transactions in which the Fund sells a security it does not own. To complete the transaction, the Fund must borrow the security to make delivery to the buyer. The Fund is then obligated to replace the security borrowed by purchasing the security at the market price at the time of replacement. The price at such time may be higher or lower than the price at which the security was sold by the Fund. If the underlying security goes down in price between the time the Fund sells the security and buys it back, the Fund will realize a gain on the transaction. Conversely, if the underlying security goes up in price during the period, the Fund will realize a loss on the transaction. Any such loss is increased by the amount of premium or interest the Fund must pay to the lender of the security. Likewise, any gain will be decreased by the amount of premium or interest the Fund must pay to the lender of the security. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. Short sales involve leverage because the Fund borrows securities and then sells them, effectively leveraging its assets. The use of leverage may magnify gains or losses for the Fund.

Tax Risk. In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in the ETPs, the Fund will be subject to the risks associated with such investment vehicles' investments, or reference assets in the case of ETNs, including the possibility that the value of the securities or instruments held or tracked by an ETP could decrease. These risks include any combination of the risks described below, as well as the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the ETPs and their exposure to various security types, currencies, market sectors and geographic regions.

Credit Risk . Certain of the ETPs are subject to the risk that a decline in the credit quality of a portfolio investment or a counterparty to a portfolio investment could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

Emerging Markets Risk . There is an increased risk of price volatility associated with an ETP's investments in, or an ETN's exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Equity Risk . The prices of equity securities in which an ETP invests or is exposed to rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

Fixed Income Risk . An ETP's investments in or exposure to fixed income securities are subject to the risk that the securities may be paid off earlier or later than expected. Either situation could cause the ETP to hold securities paying lower-than-market rates of interest, which could hurt the Fund's yield or share price.

Foreign Currency Risk . Currency movements may negatively impact the value of an ETP portfolio security even when there is no change in the value of the security in the issuer's home country. Certain of the ETPs may not hedge against the risk of currency exchange rate fluctuations, while other ETPs may if there is volatility in currency exchange rates.

Foreign Securities Risk . An ETP's investments in or exposure to foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

Geographic Investment Risk . An ETP may invest in or have exposure to the securities of issuers organized in one or more jurisdictions around the world, or in securities or instruments that provide exposure to such issuers. Such an ETP is likely to be impacted by economic conditions or events affecting the particular market or markets to which it is exposed. As of the date of this Prospectus, the Fund is expected to have significant exposure to the region listed below. The Sub-Advisor anticipates, however, that the Fund's exposure to particular regions and countries will vary greatly and may change frequently.

ASIA. To the extent an ETP has significant investment exposure to Asia, the ETP will be susceptible to loss due to adverse market, political, regulatory, and geographic events affecting that region. While certain Asian economies are exemplars of growth and development others have been and continue to be subject, to some extent, to over-extension of credit, currency devaluations and restrictions, high unemployment, high inflation, decreased exports and economic recessions.

Interest Rate Risk . An ETP's investments in or exposure to fixed income securities are subject to the risk that interest rates rise and fall over time. As with any investment whose yield reflects current interest rates, an ETP's yield will change over time. During periods when interest rates are low, an ETP's yield (and total return) also may be low. To the extent that the investment advisor (or sub-advisor) or issuer of an ETP anticipates interest rate trends imprecisely, the ETP could miss yield opportunities or its share price could fall.

Investment Risk . The Fund may experience losses with respect to its investment in an ETP. Further, there is no guarantee that an ETP will achieve its objective.

Large-Capitalization Risk . An ETP may invest in or have exposure to large-capitalization companies. Returns on investments in stocks of large U.S. companies could trail the returns on investments in stocks of small- and mid-capitalization companies or the market as a whole.

Mid-Capitalization Risk . An ETP may invest in or have exposure to mid-capitalization companies. Mid-cap companies may be more volatile and more likely than large-cap companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid-cap companies could trail the returns on investments in stocks of large- or small-cap companies or the market as a whole.

Real Estate Investment Trusts (REITs) Risk . Certain of the ETPs invest in REITs. An ETP'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. REITs are more dependent upon specialized management skills, have limited diversification and are, therefore, generally dependent on their ability to generate cash flow to make distributions to shareholders. In addition, REITs have their own expenses, and the ETP will bear a proportionate share of those expenses.

Small-Capitalization Risk . An ETP may invest in or have exposure to small-capitalization companies. Small-cap companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. In particular, small-cap companies may have limited product lines, markets, and financial resources and may be dependent upon a relatively small management group. These securities may be listed on an exchange or trade over-the-counter, and may or may not pay dividends. During a period when the performance of small-cap stocks falls behind that of other types of investments, such as large-cap stocks, the ETP's performance could be adversely affected.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Bar Chart and Performance Table [Heading]

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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 World Index, which is a free float-adjusted market capitalization weighted index designed to measure the equity market performance of developed 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.

The Fund's name and investment sub-advisor changed effective December 1, 2011. Prior to December 1, 2011, the Fund was named “Mars Hill Global Relative Value ETF” and sub-advised by Mars Hill Partners, LLC. While the Fund's investment objective and principal investment strategies remain substantially the same, the performance prior to December 1, 2011 may not be indicative of the Fund's performance under the new Sub-Advisor.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

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.

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.

Bar Chart Closing [Text Block]

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The Fund's year-to-date total return as of September 30, 2013 was -3.38%.

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

	Return		Quarter/Year
Highest Return	4.41	%	4Q/2012
Lowest Return	-11.61	%	1Q/2011

Performance Table Heading

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AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

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

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Reflects no deduction for fees, expenses, or taxes

Performance Table Uses Highest Federal Rate

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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

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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-deferred 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 Accuvest Global Long Short ETF (Prospectus Summary) | AdvisorShares Accuvest Global Long Short ETF | MSCI World Index

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

MSCI World Index (Reflects no deduction for fees, expenses, or taxes)

1 Year

rr_AverageAnnualReturnYear01

15.83%

Since Inception

rr_AverageAnnualReturnSinceInception

11.19%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 08, 2010

AdvisorShares Accuvest Global Long Short ETF (Prospectus Summary) | AdvisorShares Accuvest Global Long Short ETF | AdvisorShares Accuvest Global Long Short ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

1.35%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

Short Interest Expense

rr_Component1OtherExpensesOverAssets

2.46%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.44%

TOTAL OTHER EXPENSES

rr_OtherExpensesOverAssets

2.90%

ACQUIRED FUND FEES AND EXPENSES

rr_AcquiredFundFeesAndExpensesOverAssets

0.32%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

4.57%

^[2]

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

0.29%

^[3]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

4.28%

^[2]

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 429

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,354

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,286

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 4,652

Annual Return 2011

rr_AnnualReturn2011

(17.89%)

Annual Return 2012

rr_AnnualReturn2012

9.39%

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(3.38%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

4.41%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(11.61%)

Label

rr_AverageAnnualReturnLabel

Return Before Taxes Based on NAV

1 Year

rr_AverageAnnualReturnYear01

9.39%

Since Inception

rr_AverageAnnualReturnSinceInception

(3.60%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 08, 2010

AdvisorShares Accuvest Global Long Short ETF (Prospectus Summary) | AdvisorShares Accuvest Global Long Short ETF | AdvisorShares Accuvest Global Long Short ETF | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

^[4]

1 Year

rr_AverageAnnualReturnYear01

9.39%

Since Inception

rr_AverageAnnualReturnSinceInception

(3.77%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 08, 2010

AdvisorShares Accuvest Global Long Short ETF (Prospectus Summary) | AdvisorShares Accuvest Global Long Short ETF | AdvisorShares Accuvest Global Long Short ETF | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

^[4]

1 Year

rr_AverageAnnualReturnYear01

6.10%

Since Inception

rr_AverageAnnualReturnSinceInception

(3.14%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 08, 2010

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.50% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[4] 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-deferred 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.

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AdvisorShares Global Echo ETF (Prospectus Summary) | AdvisorShares Global Echo ETF

ADVISORSHARES GLOBAL ECHO ETF (NYSE Arca Ticker: GIVE)

INVESTMENT OBJECTIVE

The AdvisorShares Global Echo ETF (the “Fund”) seeks to achieve long-term capital appreciation with an emphasis on absolute (positive) returns and low sensitivity to traditional financial market indices, such as the S&P 500 Index, over a full market cycle.

FUND FEES AND EXPENSES

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(fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Global Echo ETF
MANAGEMENT FEES		1.10%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		0.40%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.11%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	1.61%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Global Echo ETF	164	509	877	1,913

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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, 2013, the Fund's portfolio turnover rate was 180% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES 

The Fund is a multi-manager, multi-strategy, broadly diversified, actively managed exchange-traded fund (“ETF”) with a focus on Sustainable Investing. Sustainable Investing generally refers to an investment methodology that takes into consideration economic, environmental, technology, and a variety of social factors when making investment decisions. Accordingly, the Fund is designed as a core allocation that proactively seeks Sustainable Investment-themed investment opportunities that may socially and environmentally benefit the earth, with a focus on water, clean energy, community development, innovation and other sustainable themes across asset classes. Sustainable Investment themes that the Fund may pursue include, but are not limited to, the following: economic themes (e.g., corporate governance, risk and crisis management, community investment, energy efficiency, food, green building); environmental themes (e.g., air, water, earth); technology themes (e.g., mobility, renewable energy, technology, access); and social themes (e.g., human health, occupational health and safety).
 

The Fund's namesake is the Global Echo Foundation, a charitable foundation co-founded by Philippe Cousteau, Jr. The Global Echo Foundation's mission is to promote sustainable development across a number of different themes, including social, environmental, and entrepreneurship. The Fund was designed to pursue sustainable investment opportunities among the same themes thereby promoting the Global Echo Foundation's mission of increased sustainable development. To further support the Global Echo Foundation, the Fund will make regular monetary contributions to the Foundation. The Global Echo Foundation will not participate in or have any influence on the day-to-day operations of the Fund or the Advisor's and Sub-Advisors' management of the Fund.

The Fund seeks to achieve its investment objective by allocating a portion of the Fund's assets to each of the Fund's Sub-Advisors who will employ their respective investment strategies to generate absolute returns over a full market cycle. Generally, a full market cycle consists of a bull market followed by a bear market and a return to a bull market, or vice versa. Initially, an equal proportion of the Fund's assets will be allocated to each Sub-Advisor to obtain the desired exposure to the strategies described below. The allocation among Sub-Advisors will vary over time in response to a variety of factors including prevailing market conditions. The Advisor has designated First Affirmative Financial Network, LLC (“First Affirmative”) to allocate and monitor the allocation of the Fund's assets to each Sub-Advisor to ensure that the Fund's portfolio maintains the proper investment exposure to seek to achieve its investment objective. Each Sub-Advisor will seek to identify and invest either directly or indirectly through other ETFs, in securities of companies that are making a positive impact in the world and reflect Sustainable Investment themes, including corporate sustainability. The Fund's investments in companies that practice corporate sustainability provide an additional layer of diversification because such investments are designed to increase long-term shareholder value. Companies focused on corporate sustainability also can provide more attractive risk return profiles for investors, and can leverage various other Sustainable Investment themes.

The Fund invests primarily in U.S. and foreign equity securities, including common and preferred stock, American Depository Receipts (“ADRs”), fixed income securities, including municipal bonds, and affiliated and unaffiliated ETFs. The Fund may take both long and short positions in any of these investments. A long position is the purchase of an investment with the expectation that it will rise in value. A short position is the sale of a borrowed investment with the expectation that it will decline in value. The Fund may invest up to 65% (and intends to always invest at least 15%) of its net assets in domestic and foreign fixed income securities. The Fund may invest in securities of any capitalization range and may employ one or more investment styles (from growth to value) at any time as necessary to seek to achieve the Fund's investment objective.

Each Sub-Advisor will determine whether to buy or sell an investment for the Fund's portfolio by applying one or more of the following strategies:

Core Strategies

○Fixed Income Strategies. Fixed income strategies consist of investment strategies that invest primarily in debt securities of domestic and foreign governments, agencies, and instrumentalities, municipalities, and companies of all maturities and qualities (including “junk bonds” and up to 15% of the Fund's total assets in defaulted debt securities), TIPS (Treasury Inflation Protected Securities), and ETFs that provide exposure to fixed income securities or strategies. Debt securities of foreign governments are sometimes referred to as sovereign debt obligations and may be issued or guaranteed by foreign governments or their agencies. The Fund may invest in mortgage-backed securities, collateralized mortgage obligations, asset-backed securities, and other mortgage related securities (“Mortgage Related Securities”). Fixed income strategies also may involve hedging through the use of investments in other ETFs to enhance risk-adjusted return.

○Equity Strategies. Equity strategies consist of both domestic and international/emerging markets strategies. The domestic equity strategies seek to invest in securities of companies that the Sub-Advisor believes will outperform other equities securities over the long term. The international/emerging markets equity strategies seek to invest in securities of undervalued international companies through ADRs that provide the Fund with exposure to businesses outside of the U.S. and that are attractively priced relative to their economic fundamentals. Both U.S. and international investments are selected using fundamental analysis of factors such as earnings, cash flows, and valuations based upon them, and are diversified among the economic and industry sectors in the S&P 500^® Index, the Morgan Stanley Capital International (MSCI) All Country World Index, MSCI Europe, Australasia and Far East Index, and MSCI Emerging Markets Index.

Alternative Strategies

○Long/Short and Hedging Strategies. Alternative strategies consist of strategies that combine short sales of equities (including shares of ETFs) or purchase of shares of inverse ETFs. As such, long/short strategies may utilize securities that seek to track indexes on markets, sectors, strategies and/or industries to hedge against potential adverse movements in security prices. The Fund may implement multiple variations of long/short and hedging strategies. The basic long/short equity strategies generally seek to increase net long exposure in a bull market and decrease net long exposure, by holding high concentrations in cash or investing 100% short, in a bear market.

PRINCIPAL RISKS OF INVESTING IN THE FUND 

The Fund is subject to a number of risks that may affect the value of its shares, including:

American Depositary Receipt (ADR) 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 and changes in the exchange rates of foreign currencies. In addition, investments in ADRs may be less liquid than the underlying securities in their primary trading market.

Credit Risk. The Fund is subject to the risk that an issuer of a fixed income security, such as a municipal bond, may be unable or unwilling to make interest and principal payments when due. The Fund is also subject to the related risk that the value of a fixed income security may decline because of concerns about the issuer's creditworthiness. Credit risk is heightened to the extent the Fund invests in high yield securities or junk bonds.

Currency Risk. The Fund's indirect and direct exposure to foreign currencies subjects the Fund to the risk that those currencies will decline in value relative to the U.S. dollar.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Emerging Markets Risk. Certain of the Fund's investments will expose the Fund's portfolio to the risks of investing in emerging markets. Emerging markets, which consist of countries or markets with low to middle income economies as classified by the World Bank and other countries or markets with similar characteristics as determined by the Advisor, can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

ETF Risk. Through its investments in ETFs, the Fund will be subject to the risks associated with the ETFs' investments, including the possibility that the value of the securities held by an ETF could decrease.

Fixed Income Risk. Fixed income securities are subject to the risk that securities could lose value because of interest rate changes. Fixed income securities with longer maturities are subject to greater price shifts as a result of interest rate changes than fixed income securities with shorter maturities. Fixed income securities also are subject to prepayment, interest rate, and credit risks.

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. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

High-Yield Securities Risk. The risk that high-yield debt securities or “junk bonds” are subject to a greater risk of loss of income and principal than higher-grade debt securities. Issuers of junk bonds are often highly leveraged and are more vulnerable to changes in the economy.

Investment Risk. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may experience losses with respect to its investment. Further, there is no guarantee that the Fund will be able to achieve its objective.

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-Advisors continuously evaluate 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. The Sub-Advisors' judgment 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 Fund's investments may fluctuate significantly from day to day.  This volatility may cause the value of your investment in the Fund to decrease.

Mortgage-Backed Securities Risk. Mortgage-backed securities may be affected by, among other things, changes or perceived changes in interest rates and the quality of the underlying assets. The underlying assets may default or decline in quality or value.

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

Premium-Discount Risk. The Fund's shares 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.

Short Sales Risk. Short sales are transactions in which the Fund sells a security it does not own. To complete the transaction, the Fund must borrow the security to make delivery to the buyer. The Fund is then obligated to replace the security borrowed by purchasing the security at the market price at the time of replacement. The price at such time may be higher or lower than the price at which the security was sold by the Fund. If the underlying security goes down in price between the time the Fund sells the security and buys it back, the Fund will realize a gain on the transaction. Conversely, if the underlying security goes up in price during the period, the Fund will realize a loss on the transaction. Any such loss is increased by the amount of premium or interest the Fund must pay to the lender of the security. Likewise, any gain will be decreased by the amount of premium or interest the Fund must pay to the lender of the security. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. Short sales involve leverage because the Fund borrows securities and then sells them, effectively leveraging its assets. The use of leverage may magnify gains or losses for the Fund.

Strategy Risk. The risk that investment strategies employed by the Advisor and Sub-Advisors 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 investments. There is no guarantee that the Fund's investment strategies will succeed in limiting the Fund's exposure to stock market movements, capitalization and sector swings, or other risk factors.

Sustainable Investments Risk. The Fund's investments in sustainable investment theme issuers may subject the Fund to the risk that the securities of such issuers will underperform other economic sectors or the market as a whole.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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.

[1] As a shareholder in certain underlying exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

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AdvisorShares Meidell Tactical Advantage ETF (Prospectus Summary) | AdvisorShares Meidell Tactical Advantage ETF

MEIDELL TACTICAL ADVANTAGE ETF (NYSE Arca Ticker: MATH)

INVESTMENT OBJECTIVE

The Meidell Tactical Advantage ETF (the “Fund”) seeks to provide long-term capital appreciation with a secondary emphasis on capital preservation.

FUND FEES AND EXPENSES

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 (fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Meidell Tactical Advantage ETF
MANAGEMENT FEES		1.20%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		1.79%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.28%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	3.27%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[3]	1.64%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[2]	1.63%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Meidell Tactical Advantage ETF	166	853	1,565	3,455

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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, 2013, the Fund's portfolio turnover rate was 605% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund is considered a “fund of funds” that seeks to achieve its investment objective by primarily investing in other exchange-traded funds (the “Underlying ETFs”) that offer diversified exposure to global regions, countries, styles (market capitalization, value, growth, etc.) or sectors, and other exchange-traded products, including, but not limited to, exchange-traded notes (“ETNs”), exchange-traded currency trusts, and closed-end funds (together with Underlying ETFs, “ETPs”). The Fund primarily invests in U.S.-listed domestic and foreign equity, fixed income, and commodity ETPs.

American Wealth Management (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by managing a tactical strategy that has the ability to dynamically rebalance the Fund's portfolio from as much as 100% equity assets to 100% fixed income assets or cash and cash equivalents depending on market trends. This is a long-only tactical strategy that seeks to minimize portfolio losses by rotating out of higher volatility assets and into lower volatility assets when the Sub-Advisor believes there are significant risks in the equity markets. Risk management is an integral part of the Sub-Advisor's investment strategy. The Fund will not invest in leveraged or inverse exchange-traded funds.

The Sub-Advisor uses a quantitative tactical methodology to identify the ETPs believed to be participating in long-term “durable trends” within the market. This model enables the Sub-Advisor to evaluate, rank and select the appropriate mix of investments in ETPs given market conditions.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETPs and the allocation of assets among such ETPs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

ETN 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.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. 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 lower Fund performance.

Premium-Discount Risk. The Fund's shares 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.

Tax Risk.In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in the ETPs, the Fund will be subject to the risks associated with the ETPs' investments, including the possibility that the value of the securities held by an ETP could decrease. These risks include any combination of the risks described below as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation and ETP's asset allocation.

Commodities Risk. The commodities industries can be significantly affected by the level and volatility of commodity prices; world events including international monetary and political developments; import controls and worldwide competition; exploration and production spending; and tax and other government regulations and economic conditions.

Concentration Risk . An ETP may, at various times, concentrate in the securities of a particular industry, group of industries, or sector, and when a fund is over-weighted in an industry, group of industries, or sector, it may be more sensitive to any single economic, business, political, or regulatory occurrence than a fund that is not over-weighted in an industry, group of industries, or sector.

Credit Risk . Certain of the ETPs are subject to the risk that a decline in the credit quality of a portfolio investment could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

Emerging Markets Risk . There is an increased risk of price volatility associated with an ETP's investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Equity Risk . The prices of equity securities in which an ETP invests in or is exposed to rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

Fixed Income Risk . An ETP's investments in fixed income securities are subject to the risk that the securities may be paid off earlier or later than expected. Either situation could cause the ETP to hold securities paying lower- than-market rates of interest, which could hurt the Fund's yield or share price.

Foreign Currency Risk . Currency movements may negatively impact the value of an ETP security even when there is no change in the value of the security in the issuer's home country. Under normal circumstances, the ETPs do not intend to hedge against the risk of currency exchange rate fluctuations, but some ETPs may reserve the right to do so if there is extreme volatility in currency exchange rates.

Foreign Securities Risk . An ETP's investments in securities of foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at time, more volatile than securities of comparable U.S. companies.

“Growth” Investing Risk . An ETP may pursue a “growth style” of investing. Growth stocks can be volatile for several reasons. Since those companies usually invest a high portion of earnings in their businesses, they may lack the dividends of value stocks that can cushion stock prices in a falling market. The prices of growth stocks are based largely on projections of the issuer's future earnings and revenues. If a company's earnings or revenues fall short of expectations, its stock price may fall dramatically.

High-Yield Risk . An ETP may invest in high-yield securities and unrated securities of similar credit quality (commonly known as “junk bonds”). High-yield securities generally pay higher yields (greater income) than investment in higher quality securities; however, high-yield securities and junk bonds may be subject to greater levels of interest rate, credit and liquidity risk than funds that do not invest in such securities, and are considered predominantly speculative with respect to an issuer's continuing ability to make principal and interest payments.

Income Risk . An ETP may derive dividend and interest income from certain of its investments. This income can vary widely over the short- and long-term. If prevailing market interest rates drop, distribution rates of an ETP's income producing investments may decline which then may adversely affect the Fund's value.

Interest Rate Risk . An ETP's investments in fixed income securities are subject to the risk that interest rates rise and fall over time. As with any investment whose yield reflects current interest rates, an ETP's yield will change over time. During periods when interest rates are low, an ETP's yield (and total return) also may be low. To the extent that the investment advisor (or sub-advisor) of an ETP anticipates interest rate trends imprecisely, the ETP could miss yield opportunities or its share price could fall.

Investment Risk . An investment in an ETP is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may experience losses with respect to its investment in an ETP. Further, there is no guarantee that an ETP will be able to achieve its objective.

Large-Capitalization Risk . An ETP may invest in large-cap companies. Returns on investments in stocks of large U.S. companies could trail the returns on investments in stocks of smaller and mid-sized companies.

Mid-Capitalization Risk . An ETP may invest in mid-cap companies. Mid-sized companies may be more volatile and more likely than large-capitalization companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid-size companies could trail the returns on investments in stocks of larger or smaller companies.

Small-Capitalization Risk . An ETP may invest in small-cap companies. Small-capitalization companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. In particular, small- capitalization companies may have limited product lines, markets, and financial resources and may be dependent upon a relatively small management group. These securities may be listed on an exchange or trade over-the-counter, and may or may not pay dividends. During a period when small-cap stocks fall behind other types of investments - large-cap stocks, for instance - the ETP's performance could be reduced.

“Value” Investing Risk . Because it may invest indirectly in value stocks, the Fund could suffer losses or produce poor results relative to other funds, even in a rising market, if the Underlying ETF's investment advisor or Underlying ETP's issuers assessment of a company's value or prospects for exceeding earnings expectations or market conditions is wrong.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

The bar chart and table that follow show how the Fund has performed on a calendar year basis and provides an indication of the risks of investing in the Fund. The table also shows how the Fund's performance compares to the S&P 500 Index, which is a broad-based, unmanaged measurement of changes in stock market conditions based on the average of 500 widely held common stocks. 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.

The Fund's year-to-date total return as of September 30, 2013 was 9.87%.

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

	Return	Quarter/Year
Highest Return	9.41%	1Q/2012
Lowest Return	-6.44%	2Q/2012

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

Average Annual Total Returns	Label		1 Year	Since Inception	Inception Date
AdvisorShares Meidell Tactical Advantage ETF	Return Before Taxes Based on NAV		6.30%	2.88%	Jun. 22, 2011
AdvisorShares Meidell Tactical Advantage ETF After Taxes on Distributions	Return After Taxes on Distributions	[1]	6.16%	2.77%	Jun. 22, 2011
AdvisorShares Meidell Tactical Advantage ETF After Taxes on Distributions and Sales	Return After Taxes on Distributions and Sale of Fund Shares	[1]	4.28%	2.43%	Jun. 22, 2011
AdvisorShares Meidell Tactical Advantage ETF S&P 500 Index	S&P 500 Index (Reflects no deduction for fees, expenses, or taxes)		16.00%	9.39%	Jun. 22, 2011

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and certain exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.35% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[1] 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-deferred 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.

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AdvisorShares Global Alpha & Beta ETF (Prospectus Summary) | AdvisorShares Global Alpha & Beta ETF

Risk/Return:

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Risk/Return [Heading]

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AdvisorShares Global Alpha & Beta ETF (NYSE Arca Ticker: RRGR)

Objective [Heading]

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INVESTMENT OBJECTIVE  

Objective, Primary [Text Block]

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The AdvisorShares Global Alpha & Beta ETF (the “Fund”) seeks long-term capital growth.

Expense [Heading]

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FUND FEES AND EXPENSES

Expense Narrative [Text Block]

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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]

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SHAREHOLDER FEES(fees paid directly from your investment) None

Operating Expenses Caption [Text]

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ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

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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 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. 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. For the period from July 10, 2012, the Fund's commencement of operations, through the most recent fiscal year ended June 30, 2013, the Fund's portfolio turnover rate was 43% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

43.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

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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]

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PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

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The Fund is, in part, a ‘‘fund of funds'' that seeks to achieve its investment objective by investing primarily in other exchange-traded funds (“ETFs''), common stock of issuers of any capitalization range, and American Depositary Receipts (“ADRs”) that provide investment exposure to global equity markets and that meet certain selection criteria established by Your Source Financial, PLC (the “Sub-Advisor”).

The Sub-Advisor seeks to achieve the Fund's investment objective by actively managing the Fund's portfolio with a “top-down” perspective, focusing on tactical asset allocation and proprietary security selection. Prior to making an investment for the Fund, the Sub-Advisor will consider two indicators: (i) the 200-day moving average of the S&P 500 Index (the “Index”) and (ii) an inverted yield curve. If the Index is below its 200-day moving average or if the yield curve is inverted, the Sub-Advisor will maintain a defensive position in the Fund's portfolio.

The Fund's asset allocation and performance baseline benchmark is the Index. The Index consists of ten separate economic sectors - each of which has a weighting in the Index as a whole. In selecting investments for the Fund's portfolio, the Sub-Advisor will seek to add value by overweighting sectors that the Sub-Advisor expects to perform well and underweighting sectors that it expects to perform poorly.

The Sub-Advisor seeks to maintain diversification among and across economic sectors, industries and countries. When selling investments in the Fund's portfolio, the Sub-Advisor will consider the following factors: (i) whether equity has reached price considered to be fully valued; (ii) business or sector risk exposure to a specific security or class of securities; (iii) overvaluation or overweighting of the position in the Fund's portfolio; (iv) change in risk tolerance; and (v) identification of a better opportunity.

On a day-to-day basis, the Fund may hold money market instruments, cash, other cash equivalents, and ETFs that invest in these and other highly liquid instruments.

Risk [Heading]

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PRINCIPAL RISKS OF INVESTING IN THE FUND

Risk Narrative [Text Block]

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The Fund is subject to a number of risks that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETFs and the allocation of assets among such ETFs will cause the Fund to underperform other funds with a similar investment objective that seek to achieve their investment objectives by investing directly in the securities held by ETFs, by investing in a different selection of ETFs, or by pursuing a different allocation of assets among such ETFs.

American Depositary Receipt (ADR) 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 and changes in the exchange rates of foreign currencies. In addition, investments in ADRs may be less liquid than the underlying securities in their primary trading market.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Investment Risk. As with all investments, an investment in the Fund is subject to investment risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or even long periods of time.

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.

Market Risk. Due to market conditions, the value of the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETF Investment Risk. Through its investments in other ETFs, the Fund will be subject to the risks associated with such ETFs' investments, including the possibility that the value of the securities or instruments held or tracked by an ETF could decrease. These risks include any combination of the risks described below, as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the ETFs and their exposure to various security types, currencies, market sectors, and geographic regions.

· Concentration Risk . An ETF may, at various times, concentrate in the securities of a particular industry, group of industries, or sector. When an ETF is over-weighted in an industry, group of industries, or sector, it may be more sensitive to any single economic, business, political, or regulatory occurrence than a fund that is not over-weighted in an industry, group of industries, or sector.

·Counterparty Risk. Commodity-linked derivatives, repurchase agreements, swap agreements and other forms of financial instruments that involve counterparties subject an ETF to the risk that the counterparty could default on its obligations under the agreement, either through the counterparty's bankruptcy or failure to perform its obligations.

·Credit Risk. Certain of the ETFs are subject to the risk that a decline in the credit quality of a portfolio investment or a counterparty to a portfolio investment could cause the ETF's share price to fall. The ETFs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

·Emerging Markets Risk.There is an increased risk of price volatility associated with an ETF's investments in, or exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

·Equity Risk.The prices of equity securities in which an ETF invests or is exposed to rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

·Foreign Currency Risk. Currency movements may negatively impact the value of an ETF portfolio security even when there is no change in the value of the security in the issuer's home country. Certain of the ETFs may not hedge against the risk of currency exchange rate fluctuations, while other ETFs may if there is volatility in currency exchange rates.

·Foreign Securities Risk. An ETF's investments in, or exposure to, foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

·Investment Risk. The Fund may experience losses with respect to its investment in an ETF. Further, there is no guarantee that an ETF will be able to achieve its objective.

· Tracking Error Risk . Tracking error can arise due to factors such as the affect of transaction fees and expenses incurred by an ETF, changes in composition of an ETF's benchmark, and the ability of the ETF's manager or sponsor to successfully implement his or her investment strategy.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

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As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Bar Chart and Performance Table [Heading]

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FUND PERFORMANCE

Performance Narrative [Text Block]

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A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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 One Year or Less [Text]

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A comparison of the Fund’s performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year.

Performance Availability Website Address [Text]

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www.advisorshares.com

Performance Past Does Not Indicate Future [Text]

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Of course, once the Fund has performance, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

AdvisorShares Global Alpha & Beta ETF (Prospectus Summary) | AdvisorShares Global Alpha & Beta ETF | AdvisorShares Global Alpha & Beta ETF

Risk/Return:

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MANAGEMENT FEES

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1.00%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

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5.95%

ACQUIRED FUND FEES AND EXPENSES

rr_AcquiredFundFeesAndExpensesOverAssets

0.23%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

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7.18%

^[2]

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

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5.70%

^[3]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

1.48%

^[2]

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

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$ 150

Expense Example, with Redemption, 3 Years

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1,604

Expense Example, with Redemption, 5 Years

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2,995

Expense Example, with Redemption, 10 Years

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$ 6,216

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.25% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

XML

Label

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Entity Central Index Key

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0001408970

AdvisorShares Madrona International ETF (Prospectus Summary) | AdvisorShares Madrona International ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

MADRONA INTERNATIONAL ETF (NYSE Arca Ticker: FWDI)

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Madrona International ETF (the “Fund”) seeks to provide long-term capital appreciation above the capital appreciation of its international benchmarks, such as the MSCI EAFE Index, the Fund's primary benchmark, and the BNY Mellon Classic ADR Index, the Fund's secondary benchmark.

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 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 Fund 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, 2013, the Fund's portfolio turnover rate was 93% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

93.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

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

Madrona Funds, LLC (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by selecting a portfolio primarily composed of American Depository Receipts (“ADRs”) from among the largest issuers of Europe, Australasia and the Far East (“EAFE”) and Canada. The Fund's portfolio may also include U.S.-traded securities of large-capitalization non-U.S. issuers that provide exposure to certain markets deemed to be emerging markets. Securities are selected, weighted and sold based upon the Sub-Advisor's proprietary investment process. The Sub-Advisor's investment committee meets on a bi-weekly basis to monitor the portfolio and make allocation decisions. The investment committee uses third-party analyst research and a proprietary fundamental process to make allocation decisions.

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 that may affect the value of its shares, including:

American Depositary Receipt (ADR) 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 and changes in the exchange rates of foreign currencies. In addition, investments in ADRs may be less liquid than the underlying securities in their primary trading market.

Currency Risk. As a result of the Fund's investments in securities receiving revenues in, foreign currencies, the Fund will be subject to currency risk. This is the risk that currencies to which the Fund is exposed will decline in value relative to the U.S. dollar, which may cause the dollar value of an investment in the Fund to be adversely affected.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Emerging Markets Risk. Certain of the Fund's investments will expose the Fund's portfolio to the risks of investing in emerging markets. Emerging markets, which consist of countries or markets with low to middle income economies as classified by the World Bank and other countries or markets with similar characteristics as determined by the Advisor, can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

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.

Geographic Concentration Risk. To the extent that the Fund's investments are concentrated in a particular country or region, the Fund will be susceptible to loss due to adverse market, political, regulatory, and geographic events affecting that country or region. The Fund has concentrated investment exposure to the countries and regions listed below.

Asia. While certain Asian economies are exemplars of growth and development others have been and continue to be subject, to some extent, to over-extension of credit, currency devaluations and restrictions, high unemployment, high inflation, decreased exports and economic recessions.

Canada. The Canadian economy is susceptible to adverse changes in certain commodities markets, including those related to the agricultural and mining industries. It is also heavily dependent on trading with key partners. Any reduction in this trading may adversely affect the Canadian economy.

Europe. The European economy is diverse and includes both large, competitive economies and small, struggling economies. The European economy is vulnerable to decreasing imports or exports, changes in governmental regulations on trade, changes in the exchange rate of the euro and recessions in EU economies.

United States . The United States is a significant trading partner of many emerging markets in which the Fund invests. The United States economy has traditionally been considered to be one of the most stable and productive economies in the world. However, the recent financial crisis, declining United States imports, new trade regulations, changes in exchange rates, and increasing public debt pose concerns for many of the United States' trading partners that depend on its historically high levels of consumer spending and foreign investment.

Large-Cap Risk. Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when the demand for large-cap stocks is less than for other types of investments - small-cap stocks, for instance - the Fund's performance could be reduced.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

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 EAFE Index, which is a unmanaged free float-adjusted market capitalization index that is designed to measure the equity market performance of developed markets, excluding the United States and Canada. 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 Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

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.

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund's year-to-date total return as of September 30, 2013 was 12.78%.

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

	Return	Quarter/Year
Highest Return	14.39%	1Q/2012
Lowest Return	-9.26%	2Q/2012

Performance Table Heading

rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

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

rr_IndexNoDeductionForFeesExpensesTaxes

Reflects no deduction for fees, expenses, or taxes

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-deferred 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 Madrona International ETF (Prospectus Summary) | AdvisorShares Madrona International ETF | MSCI EAFE Index

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

MSCI EAFE Index (Reflects no deduction for fees, expenses, or taxes)

1 Year

rr_AverageAnnualReturnYear01

17.32%

Since Inception

rr_AverageAnnualReturnSinceInception

1.54%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

AdvisorShares Madrona International ETF (Prospectus Summary) | AdvisorShares Madrona International ETF | AdvisorShares Madrona International ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

0.80%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

0.85%

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

1.65%

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

0.40%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

1.25%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus and for an indefinite period thereafter subject to annual approval by the AdvisorShares Trust Board of Trustees (the "Board").

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 128

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

482

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

861

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,924

Annual Return 2012

rr_AnnualReturn2012

19.87%

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

12.78%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

14.39%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2012

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(9.26%)

Label

rr_AverageAnnualReturnLabel

Return Before Taxes Based on NAV

1 Year

rr_AverageAnnualReturnYear01

19.87%

Since Inception

rr_AverageAnnualReturnSinceInception

(1.45%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

AdvisorShares Madrona International ETF (Prospectus Summary) | AdvisorShares Madrona International ETF | AdvisorShares Madrona International ETF | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

^[2]

1 Year

rr_AverageAnnualReturnYear01

19.59%

Since Inception

rr_AverageAnnualReturnSinceInception

(1.66%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

AdvisorShares Madrona International ETF (Prospectus Summary) | AdvisorShares Madrona International ETF | AdvisorShares Madrona International ETF | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

^[2]

1 Year

rr_AverageAnnualReturnYear01

13.15%

Since Inception

rr_AverageAnnualReturnSinceInception

(1.28%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

[1] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses to keep the Fund's Total Annual Fund Operating 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 1.25% of the Fund's average daily net assets for at least a 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 at its principal place of business, 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-deferred 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.

XML

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Value

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Entity Central Index Key

dei_EntityCentralIndexKey

0001408970

AdvisorShares Meidell Tactical Advantage ETF (Prospectus Summary) | AdvisorShares Meidell Tactical Advantage ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

MEIDELL TACTICAL ADVANTAGE ETF (NYSE Arca Ticker: MATH)

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Meidell Tactical Advantage ETF (the “Fund”) seeks to provide long-term capital appreciation with a secondary emphasis on capital preservation.

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 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. 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, 2013, the Fund's portfolio turnover rate was 605% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

605.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleByYearHeading

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 is considered a “fund of funds” that seeks to achieve its investment objective by primarily investing in other exchange-traded funds (the “Underlying ETFs”) that offer diversified exposure to global regions, countries, styles (market capitalization, value, growth, etc.) or sectors, and other exchange-traded products, including, but not limited to, exchange-traded notes (“ETNs”), exchange-traded currency trusts, and closed-end funds (together with Underlying ETFs, “ETPs”). The Fund primarily invests in U.S.-listed domestic and foreign equity, fixed income, and commodity ETPs.

American Wealth Management (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by managing a tactical strategy that has the ability to dynamically rebalance the Fund's portfolio from as much as 100% equity assets to 100% fixed income assets or cash and cash equivalents depending on market trends. This is a long-only tactical strategy that seeks to minimize portfolio losses by rotating out of higher volatility assets and into lower volatility assets when the Sub-Advisor believes there are significant risks in the equity markets. Risk management is an integral part of the Sub-Advisor's investment strategy. The Fund will not invest in leveraged or inverse exchange-traded funds.

The Sub-Advisor uses a quantitative tactical methodology to identify the ETPs believed to be participating in long-term “durable trends” within the market. This model enables the Sub-Advisor to evaluate, rank and select the appropriate mix of investments in ETPs given market conditions.

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 that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETPs and the allocation of assets among such ETPs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

ETN 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.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. 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 lower Fund performance.

Premium-Discount Risk. The Fund's shares 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.

Tax Risk.In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in the ETPs, the Fund will be subject to the risks associated with the ETPs' investments, including the possibility that the value of the securities held by an ETP could decrease. These risks include any combination of the risks described below as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation and ETP's asset allocation.

Commodities Risk. The commodities industries can be significantly affected by the level and volatility of commodity prices; world events including international monetary and political developments; import controls and worldwide competition; exploration and production spending; and tax and other government regulations and economic conditions.

Concentration Risk . An ETP may, at various times, concentrate in the securities of a particular industry, group of industries, or sector, and when a fund is over-weighted in an industry, group of industries, or sector, it may be more sensitive to any single economic, business, political, or regulatory occurrence than a fund that is not over-weighted in an industry, group of industries, or sector.

Credit Risk . Certain of the ETPs are subject to the risk that a decline in the credit quality of a portfolio investment could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

Emerging Markets Risk . There is an increased risk of price volatility associated with an ETP's investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Equity Risk . The prices of equity securities in which an ETP invests in or is exposed to rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

Fixed Income Risk . An ETP's investments in fixed income securities are subject to the risk that the securities may be paid off earlier or later than expected. Either situation could cause the ETP to hold securities paying lower- than-market rates of interest, which could hurt the Fund's yield or share price.

Foreign Currency Risk . Currency movements may negatively impact the value of an ETP security even when there is no change in the value of the security in the issuer's home country. Under normal circumstances, the ETPs do not intend to hedge against the risk of currency exchange rate fluctuations, but some ETPs may reserve the right to do so if there is extreme volatility in currency exchange rates.

Foreign Securities Risk . An ETP's investments in securities of foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at time, more volatile than securities of comparable U.S. companies.

“Growth” Investing Risk . An ETP may pursue a “growth style” of investing. Growth stocks can be volatile for several reasons. Since those companies usually invest a high portion of earnings in their businesses, they may lack the dividends of value stocks that can cushion stock prices in a falling market. The prices of growth stocks are based largely on projections of the issuer's future earnings and revenues. If a company's earnings or revenues fall short of expectations, its stock price may fall dramatically.

High-Yield Risk . An ETP may invest in high-yield securities and unrated securities of similar credit quality (commonly known as “junk bonds”). High-yield securities generally pay higher yields (greater income) than investment in higher quality securities; however, high-yield securities and junk bonds may be subject to greater levels of interest rate, credit and liquidity risk than funds that do not invest in such securities, and are considered predominantly speculative with respect to an issuer's continuing ability to make principal and interest payments.

Income Risk . An ETP may derive dividend and interest income from certain of its investments. This income can vary widely over the short- and long-term. If prevailing market interest rates drop, distribution rates of an ETP's income producing investments may decline which then may adversely affect the Fund's value.

Interest Rate Risk . An ETP's investments in fixed income securities are subject to the risk that interest rates rise and fall over time. As with any investment whose yield reflects current interest rates, an ETP's yield will change over time. During periods when interest rates are low, an ETP's yield (and total return) also may be low. To the extent that the investment advisor (or sub-advisor) of an ETP anticipates interest rate trends imprecisely, the ETP could miss yield opportunities or its share price could fall.

Investment Risk . An investment in an ETP is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may experience losses with respect to its investment in an ETP. Further, there is no guarantee that an ETP will be able to achieve its objective.

Large-Capitalization Risk . An ETP may invest in large-cap companies. Returns on investments in stocks of large U.S. companies could trail the returns on investments in stocks of smaller and mid-sized companies.

Mid-Capitalization Risk . An ETP may invest in mid-cap companies. Mid-sized companies may be more volatile and more likely than large-capitalization companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid-size companies could trail the returns on investments in stocks of larger or smaller companies.

Small-Capitalization Risk . An ETP may invest in small-cap companies. Small-capitalization companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. In particular, small- capitalization companies may have limited product lines, markets, and financial resources and may be dependent upon a relatively small management group. These securities may be listed on an exchange or trade over-the-counter, and may or may not pay dividends. During a period when small-cap stocks fall behind other types of investments - large-cap stocks, for instance - the ETP's performance could be reduced.

“Value” Investing Risk . Because it may invest indirectly in value stocks, the Fund could suffer losses or produce poor results relative to other funds, even in a rising market, if the Underlying ETF's investment advisor or Underlying ETP's issuers assessment of a company's value or prospects for exceeding earnings expectations or market conditions is wrong.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

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

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 provides an indication of the risks of investing in the Fund. The table also shows how the Fund's performance compares to the S&P 500 Index, which is a broad-based, unmanaged measurement of changes in stock market conditions based on the average of 500 widely held common stocks. 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 Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The bar chart and table that follow show how the Fund has performed on a calendar year basis and provides an indication of the risks of investing in the Fund

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund's year-to-date total return as of September 30, 2013 was 9.87%.

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

	Return	Quarter/Year
Highest Return	9.41%	1Q/2012
Lowest Return	-6.44%	2Q/2012

Performance Table Heading

rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

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

rr_IndexNoDeductionForFeesExpensesTaxes

Reflects no deduction for fees, expenses, or taxes

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-deferred 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 Meidell Tactical Advantage ETF (Prospectus Summary) | AdvisorShares Meidell Tactical Advantage ETF | S&P 500 Index

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500 Index (Reflects no deduction for fees, expenses, or taxes)

1 Year

rr_AverageAnnualReturnYear01

16.00%

Since Inception

rr_AverageAnnualReturnSinceInception

9.39%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 22, 2011

AdvisorShares Meidell Tactical Advantage ETF (Prospectus Summary) | AdvisorShares Meidell Tactical Advantage ETF | AdvisorShares Meidell Tactical Advantage ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

1.20%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

1.79%

ACQUIRED FUND FEES AND EXPENSES

rr_AcquiredFundFeesAndExpensesOverAssets

0.28%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

3.27%

^[2]

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

1.64%

^[3]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

1.63%

^[2]

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 166

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

853

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,565

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 3,455

Annual Return 2012

rr_AnnualReturn2012

6.30%

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

9.87%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

9.41%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2012

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(6.44%)

Label

rr_AverageAnnualReturnLabel

Return Before Taxes Based on NAV

1 Year

rr_AverageAnnualReturnYear01

6.30%

Since Inception

rr_AverageAnnualReturnSinceInception

2.88%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 22, 2011

AdvisorShares Meidell Tactical Advantage ETF (Prospectus Summary) | AdvisorShares Meidell Tactical Advantage ETF | AdvisorShares Meidell Tactical Advantage ETF | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

^[4]

1 Year

rr_AverageAnnualReturnYear01

6.16%

Since Inception

rr_AverageAnnualReturnSinceInception

2.77%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 22, 2011

AdvisorShares Meidell Tactical Advantage ETF (Prospectus Summary) | AdvisorShares Meidell Tactical Advantage ETF | AdvisorShares Meidell Tactical Advantage ETF | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

^[4]

1 Year

rr_AverageAnnualReturnYear01

4.28%

Since Inception

rr_AverageAnnualReturnSinceInception

2.43%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 22, 2011

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and certain exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.35% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[4] 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-deferred 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.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Entity Central Index Key

dei_EntityCentralIndexKey

0001408970

AdvisorShares Madrona Global Bond ETF (Prospectus Summary) | AdvisorShares Madrona Global Bond ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

MADRONA GLOBAL BOND ETF (NYSE Arca Ticker: FWDB)

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Madrona Global Bond ETF (the “Fund”) seeks investment results that exceed the price and yield performance of its benchmark, the Barclays Capital Aggregate Bond Index.

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 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 Fund 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, 2013, the Fund's portfolio turnover rate was 28% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

28.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Reimbursements in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include Acquired Fund Fees and Expenses.

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

Madrona Funds, LLC (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by selecting a portfolio of fixed income (bond) exchange-traded funds (the “Underlying ETFs”) and other exchange-traded products, including, but not limited to, exchange-traded notes (“ETNs”), exchange-traded currency trusts, and exchange-traded commodity pools (together with Underlying ETFs, “ETPs”). The Fund invests in ETFs that provide exposure to at least 12 distinct bond classes, including, but not limited to, short-term treasury bonds, municipal bonds, and high-yield U.S. corporate bonds (sometimes referred to as “junk bonds”). The Sub-Advisor will construct the Fund's portfolio using a weighted allocation system based on yield curve analysis of each bond category. The investment committee meets on a bi-weekly basis to monitor the Fund's portfolio and make allocation decisions. The investment committee uses third-party analyst research and a proprietary fundamental process to make allocation decisions. Each major bond category will have a three percent minimum percentage inclusion in the Fund's portfolio.

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 that may affect the value of its shares, including:

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

ETN 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.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Tax Risk. In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in ETPs, the Fund will be subject to the risks associated with the ETP's investments, including the possibility that the value of the securities or assets held by an ETP or an ETP's reference asset could decrease. These risks include any combination of the risks described below as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation and each ETP's asset allocation.

Commodities Risk. The commodities industries can be significantly affected by the level and volatility of commodity prices; world events including international monetary and political developments; import controls and worldwide competition; exploration and production spending; and tax and other government regulations and economic conditions.

Concentration Risk . An ETP may, at various times, concentrate in the securities of a particular industry, group of industries, or sector, and when a fund is over-weighted in an industry, group of industries, or sector, it may be more sensitive to any single economic, business, political, or regulatory occurrence than a fund that is not over-weighted in an industry, group of industries, or sector.

Credit Risk . Certain of the ETPs are subject to the risk that a decline in the credit quality of a portfolio investment or reference asset could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

Fixed Income Risk . An ETP's investments in, or exposure to, fixed income securities are subject to the risk that the securities may be paid off earlier or later than expected. Either situation could cause the ETP to hold securities paying lower- than-market rates of interest, which could hurt the Fund's yield or share price.

High-Yield Risk . An ETP may invest in, or be exposed to, high-yield securities and unrated securities of similar credit quality (commonly known as “junk bonds”). High-yield securities generally pay higher yields (greater income) than investment in higher quality securities; however, high-yield securities and junk bonds may be subject to greater levels of interest rate, credit and liquidity risk than funds that do not invest in such securities, and are considered predominantly speculative with respect to an issuer's continuing ability to make principal and interest payments.

Income Risk . An ETP may derive dividend and interest income from certain of its investments. This income can vary widely over the short- and long-term. If prevailing market interest rates drop, distribution rates of an ETP's income producing investments may decline which then may adversely affect the Fund's value.

Interest Rate Risk . An ETP's investments in or exposure to fixed income securities are subject to the risk that interest rates rise and fall over time. As with any investment whose yield reflects current interest rates, an ETP's yield will change over time. During periods when interest rates are low, an ETP's yield (and total return) also may be low. To the extent that the investment advisor or issuer of an ETP anticipates interest rate trends imprecisely, the ETP could miss yield opportunities or its share price could fall.

Investment Risk . An investment in an ETP is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may experience losses with respect to its investment in an ETP. Further, there is no guarantee that an ETP will be able to achieve its objective.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

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

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 Barclays Capital U.S. Aggregate Bond Index measures the performance of the U.S. investment-grade bond market. 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 Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

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.

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund's year-to-date total return as of September 30, 2013 was -2.84%.

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

	Return	Quarter/Year
Highest Return	3.18%	3Q/2012
Lowest Return	1.02%	2Q/2012

Performance Table Heading

rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

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

rr_IndexNoDeductionForFeesExpensesTaxes

Reflects no deduction for fees, expenses or taxes

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-deferred 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 Madrona Global Bond ETF (Prospectus Summary) | AdvisorShares Madrona Global Bond ETF | Barclays Capital U.S. Aggregate Bond Index

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays Capital U.S. Aggregate Bond Index (Reflects no deduction for fees, expenses or taxes)

1 Year

rr_AverageAnnualReturnYear01

4.21%

Since Inception

rr_AverageAnnualReturnSinceInception

5.68%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

AdvisorShares Madrona Global Bond ETF (Prospectus Summary) | AdvisorShares Madrona Global Bond ETF | AdvisorShares Madrona Global Bond ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

0.50%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

0.52%

ACQUIRED FUND FEES AND EXPENSES

rr_AcquiredFundFeesAndExpensesOverAssets

0.38%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

1.40%

^[2]

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

0.07%

^[3]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

1.33%

^[2]

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 136

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

437

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

761

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,678

Annual Return 2012

rr_AnnualReturn2012

7.84%

Year to Date Return, Label

rr_YearToDateReturnLabel

Year to Date Return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(2.84%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

3.18%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2012

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

1.02%

Label

rr_AverageAnnualReturnLabel

Return Before Taxes Based on NAV

1 Year

rr_AverageAnnualReturnYear01

7.84%

Since Inception

rr_AverageAnnualReturnSinceInception

6.63%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

AdvisorShares Madrona Global Bond ETF (Prospectus Summary) | AdvisorShares Madrona Global Bond ETF | AdvisorShares Madrona Global Bond ETF | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

^[4]

1 Year

rr_AverageAnnualReturnYear01

6.93%

Since Inception

rr_AverageAnnualReturnSinceInception

5.68%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

AdvisorShares Madrona Global Bond ETF (Prospectus Summary) | AdvisorShares Madrona Global Bond ETF | AdvisorShares Madrona Global Bond ETF | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

^[4]

1 Year

rr_AverageAnnualReturnYear01

5.13%

Since Inception

rr_AverageAnnualReturnSinceInception

5.10%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jun. 20, 2011

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Reimbursements in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 0.95% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[4] 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-deferred 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.

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AdvisorShares Madrona Global Bond ETF (Prospectus Summary) | AdvisorShares Madrona Global Bond ETF

MADRONA GLOBAL BOND ETF (NYSE Arca Ticker: FWDB)

INVESTMENT OBJECTIVE

The Madrona Global Bond ETF (the “Fund”) seeks investment results that exceed the price and yield performance of its benchmark, the Barclays Capital Aggregate Bond Index.

FUND FEES AND EXPENSES

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 (fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Madrona Global Bond ETF
MANAGEMENT FEES		0.50%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		0.52%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.38%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	1.40%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[3]	0.07%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[2]	1.33%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Madrona Global Bond ETF	136	437	761	1,678

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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 Fund 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, 2013, the Fund's portfolio turnover rate was 28% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

Madrona Funds, LLC (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by selecting a portfolio of fixed income (bond) exchange-traded funds (the “Underlying ETFs”) and other exchange-traded products, including, but not limited to, exchange-traded notes (“ETNs”), exchange-traded currency trusts, and exchange-traded commodity pools (together with Underlying ETFs, “ETPs”). The Fund invests in ETFs that provide exposure to at least 12 distinct bond classes, including, but not limited to, short-term treasury bonds, municipal bonds, and high-yield U.S. corporate bonds (sometimes referred to as “junk bonds”). The Sub-Advisor will construct the Fund's portfolio using a weighted allocation system based on yield curve analysis of each bond category. The investment committee meets on a bi-weekly basis to monitor the Fund's portfolio and make allocation decisions. The investment committee uses third-party analyst research and a proprietary fundamental process to make allocation decisions. Each major bond category will have a three percent minimum percentage inclusion in the Fund's portfolio.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

ETN 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.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Tax Risk. In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in ETPs, the Fund will be subject to the risks associated with the ETP's investments, including the possibility that the value of the securities or assets held by an ETP or an ETP's reference asset could decrease. These risks include any combination of the risks described below as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation and each ETP's asset allocation.

Commodities Risk. The commodities industries can be significantly affected by the level and volatility of commodity prices; world events including international monetary and political developments; import controls and worldwide competition; exploration and production spending; and tax and other government regulations and economic conditions.

Concentration Risk . An ETP may, at various times, concentrate in the securities of a particular industry, group of industries, or sector, and when a fund is over-weighted in an industry, group of industries, or sector, it may be more sensitive to any single economic, business, political, or regulatory occurrence than a fund that is not over-weighted in an industry, group of industries, or sector.

Credit Risk . Certain of the ETPs are subject to the risk that a decline in the credit quality of a portfolio investment or reference asset could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

Fixed Income Risk . An ETP's investments in, or exposure to, fixed income securities are subject to the risk that the securities may be paid off earlier or later than expected. Either situation could cause the ETP to hold securities paying lower- than-market rates of interest, which could hurt the Fund's yield or share price.

High-Yield Risk . An ETP may invest in, or be exposed to, high-yield securities and unrated securities of similar credit quality (commonly known as “junk bonds”). High-yield securities generally pay higher yields (greater income) than investment in higher quality securities; however, high-yield securities and junk bonds may be subject to greater levels of interest rate, credit and liquidity risk than funds that do not invest in such securities, and are considered predominantly speculative with respect to an issuer's continuing ability to make principal and interest payments.

Income Risk . An ETP may derive dividend and interest income from certain of its investments. This income can vary widely over the short- and long-term. If prevailing market interest rates drop, distribution rates of an ETP's income producing investments may decline which then may adversely affect the Fund's value.

Interest Rate Risk . An ETP's investments in or exposure to fixed income securities are subject to the risk that interest rates rise and fall over time. As with any investment whose yield reflects current interest rates, an ETP's yield will change over time. During periods when interest rates are low, an ETP's yield (and total return) also may be low. To the extent that the investment advisor or issuer of an ETP anticipates interest rate trends imprecisely, the ETP could miss yield opportunities or its share price could fall.

Investment Risk . An investment in an ETP is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may experience losses with respect to its investment in an ETP. Further, there is no guarantee that an ETP will be able to achieve its objective.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

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 Barclays Capital U.S. Aggregate Bond Index measures the performance of the U.S. investment-grade bond market. 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.

The Fund's year-to-date total return as of September 30, 2013 was -2.84%.

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

	Return	Quarter/Year
Highest Return	3.18%	3Q/2012
Lowest Return	1.02%	2Q/2012

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

Average Annual Total Returns	Label		1 Year	Since Inception	Inception Date
AdvisorShares Madrona Global Bond ETF	Return Before Taxes Based on NAV		7.84%	6.63%	Jun. 20, 2011
AdvisorShares Madrona Global Bond ETF After Taxes on Distributions	Return After Taxes on Distributions	[1]	6.93%	5.68%	Jun. 20, 2011
AdvisorShares Madrona Global Bond ETF After Taxes on Distributions and Sales	Return After Taxes on Distributions and Sale of Fund Shares	[1]	5.13%	5.10%	Jun. 20, 2011
AdvisorShares Madrona Global Bond ETF Barclays Capital U.S. Aggregate Bond Index	Barclays Capital U.S. Aggregate Bond Index (Reflects no deduction for fees, expenses or taxes)		4.21%	5.68%	Jun. 20, 2011

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Reimbursements in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 0.95% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[1] 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-deferred 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.

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AdvisorShares Accuvest Global Opportunities ETF (Prospectus Summary) | AdvisorShares Accuvest Global Opportunities ETF

ACCUVEST GLOBAL OPPORTUNITIES ETF (NYSE Arca Ticker: ACCU)

INVESTMENT OBJECTIVE

The Accuvest Global Opportunities ETF (the “Fund”) seeks long-term capital appreciation in excess of global equity benchmarks such as the MSCI All Country World Index.

FUND FEES AND EXPENSES

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 (fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Accuvest Global Opportunities ETF
MANAGEMENT FEES		0.95%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		0.59%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.56%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	2.10%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[3]	0.29%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[2]	1.81%

EXAMPLE

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: 

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Accuvest Global Opportunities ETF	184	631	1,104	2,412

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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, 2013, the Fund's portfolio turnover rate was 100% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund is a “fund of funds” that seeks to achieve its investment objective by investing primarily in other exchange-traded funds (the “Underlying ETFs”). Accuvest Global Advisors (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by investing in Underlying ETFs that provide diversified exposure to select economies around the world. The Sub-Advisor ranks countries on a monthly basis using its proprietary country ranking model in order to determine their relative attractiveness. The Sub-Advisor then endeavors to invest in Underlying ETFs, which may be both affiliated and unaffiliated with the Fund, that individually or in combination correspond generally to the price and yield performance of the specific countries (or regions) identified as most attractive by the model. The Sub-Advisor believes that attractive returns can only be achieved by actively structuring portfolios distinct from simply tracking market indices. As a result, the Fund's portfolio will be invested only in countries with the highest rankings as identified by the Sub-Advisor's proprietary country ranking process.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of the Underlying ETFs and the allocation of assets among the Underlying ETFs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Investment Risk. As with all investments, an investment in the Fund is subject to investment risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or even long periods of time.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. 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 lower Fund performance.

Premium-Discount Risk. The Fund's shares 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.

Tax Risk.In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

Underlying ETF Investment Risk. Through its investments in the Underlying ETFs, the Fund will be subject to the risks associated with the Underlying ETFs' investments, including the possibility that the value of the securities held by an Underlying ETF could decrease. These risks include any combination of the risks described below, as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the Underlying ETFs and the Underlying ETFs' exposure to various security types, currencies, market sectors, and geographic regions.

Emerging Markets Risk. There is an increased risk of price volatility associated with an Underlying ETF's investments in, or exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Equity Risk. The prices of equity securities in which an Underlying ETF invests, or is exposed to, rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

Fixed Income Risk. An Underlying ETF's investments in fixed income securities are subject to the risk that the securities may be paid off earlier or later than expected. Either situation could cause the Underlying ETF to hold securities paying lower-than-market rates of interest, which could hurt the Fund's yield or share price.

Foreign Currency Risk. Currency movements may negatively impact the value of an Underlying ETF security even when there is no change in the value of the security in the issuer's home country. Certain of the Underlying ETFs may not hedge against the risk of currency exchange rate fluctuations, while other Underlying ETFs may if there is volatility in currency exchange rates.

Foreign Securities Risk. An Underlying ETF's investments in, or exposure to, foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

Geographic Investment Risk . Each Underlying ETF invests a significant portion of its assets in the securities of issuers organized in one or more jurisdictions around the world, or in securities or instruments that provide exposure to such issuers. As such, each Underlying ETF is likely to be impacted by economic conditions or events affecting the particular market or markets reflected by its name. As of the date of this Prospectus, the Fund is expected to have significant exposure to the regions listed below. The Sub-Advisor anticipates, however, that the Fund's exposure to particular regions and countries will vary greatly and may change frequently.

ASIA. To the extent an Underlying ETF has significant investment exposure to Asia, the Underlying ETF will be susceptible to loss due to adverse market, political, regulatory, and geographic events affecting that region. While certain Asian economies are exemplars of growth and development others have been and continue to be subject, to some extent, to over-extension of credit, currency devaluations and restrictions, high unemployment, high inflation, decreased exports and economic recessions.

EASTERN EUROPE. An Underlying ETF may have significant exposure to companies located in Eastern Europe. Because of this, companies in the Underlying ETF's portfolio may react similarly to political, social, and economic developments in any of the Eastern European countries.

EUROPE. Developed and emerging market countries in Europe will be significantly affected by the fiscal and monetary controls of the European Monetary Union. Changes in regulations on trade, decreasing imports or exports, changes in the exchange rate of the euro and recessions among European countries may have a significant adverse effect on the economies of other European countries.

PACIFIC REGION. Many of the Pacific region economies can be exposed to high inflation rates, undeveloped financial services sectors, and heavy reliance on international trade. The region's economies are also dependent on the economies of Asia, Europe and the United States and, in particular, on the price and demand for agricultural products and natural resources.

NORTH AMERICA. The United States is Canada's largest trading and investment partner and the Canadian economy is significantly affected by developments in the United States economy. The United States is also a significant trading partner of many emerging markets in which the Underlying ETFs invest. Decreasing United States imports, new trade regulations, changes in the U.S. dollar exchange rates or a recession in the United States may have an adverse impact on these markets.

Investment Risk. Similar to an investment in the Fund, an investment in an Underlying ETF is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may experience losses with respect to its investment in an Underlying ETF. Further, there is no guarantee that an Underlying ETF will achieve its investment objective.

Large-Capitalization Risk. An Underlying ETF may invest in large-capitalization companies. Returns on investments in stocks of large U.S. companies could trail the returns on investments in stocks of small- and mid-capitalization companies or the market as a whole.

Mid-Capitalization Risk. An Underlying ETF may invest in mid-capitalization companies. Mid-cap companies may be more volatile and more likely than large-cap companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid-cap companies could trail the returns on investments in stocks of large- or small-cap companies or the market as a whole.

Small-Capitalization Risk. An Underlying ETF may invest in small-capitalization companies. Small-cap companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. In particular, small-cap companies may have limited product lines, markets, and financial resources and may be dependent upon a relatively small management group. These securities may be listed on an exchange or trade over-the-counter, and may or may not pay dividends. During a period when the performance of small-cap stocks falls behind that of other types of investments, such as large-cap stocks, the Underlying ETF's performance could be adversely affected.

Tracking Error Risk. Tracking error can arise due to factors such as the effect of transaction fees and expenses incurred by an Underlying ETF, changes in composition of an Underlying ETF's benchmark, and the ability of the Underlying ETF manager or sponsor to successfully implement his or her investment strategy.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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.

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products that are not investment companies in which the Fund invests, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.25% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

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AdvisorShares Accuvest Global Long Short ETF (Prospectus Summary) | AdvisorShares Accuvest Global Long Short ETF

ACCUVEST GLOBAL LONG SHORT ETF (NYSE Arca Ticker: AGLS)

INVESTMENT OBJECTIVE

The Accuvest Global Long Short ETF (the “Fund”) seeks to provide average annual returns in excess of the total return of the MSCI World Index (the “Index”).

FUND FEES AND EXPENSES

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 (fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Accuvest Global Long Short ETF
MANAGEMENT FEES		1.35%
DISTRIBUTION (12b-1) FEES		none
TOTAL OTHER EXPENSES		2.90%
Short Interest Expense		2.46%
Other Expenses		0.44%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.32%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	4.57%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[3]	0.29%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[2]	4.28%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Accuvest Global Long Short ETF	429	1,354	2,286	4,652

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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, 2013, the Fund's portfolio turnover rate was 270% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund is considered a “fund of funds” that seeks to achieve its investment objective by primarily investing in both long and short positions in other exchange-traded funds (the “Underlying ETFs”) that offer diversified exposure to global regions, countries, styles (market capitalization, value, growth, etc.) or sectors, and other exchange-traded products, including, but not limited to, exchange-traded notes (“ETNs”) and exchange-traded currency trusts (collectively with Underlying ETFs, “ETPs”).

Accuvest Global Advisors (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by taking long positions in the Underlying ETFs that invest in what it believes to be the most relatively attractive global regions and countries within those regions and by taking short positions, by entering into short sales, in the Underlying ETFs that invest in what it believes to be the most relatively unattractive global regions and countries within those regions. In establishing such positions, the Fund seeks to profit from the relative performance between the long and short positions in global regions, countries, styles or sectors. From time to time, the Fund may have directional exposure to seek to profit by being net long when stock markets are rising and net short when markets are falling.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETPs and the allocation of assets among such ETPs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

ETN 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. 

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.

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

Premium-Discount Risk. The Fund's shares 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.

Short Sales Risk. Short sales are transactions in which the Fund sells a security it does not own. To complete the transaction, the Fund must borrow the security to make delivery to the buyer. The Fund is then obligated to replace the security borrowed by purchasing the security at the market price at the time of replacement. The price at such time may be higher or lower than the price at which the security was sold by the Fund. If the underlying security goes down in price between the time the Fund sells the security and buys it back, the Fund will realize a gain on the transaction. Conversely, if the underlying security goes up in price during the period, the Fund will realize a loss on the transaction. Any such loss is increased by the amount of premium or interest the Fund must pay to the lender of the security. Likewise, any gain will be decreased by the amount of premium or interest the Fund must pay to the lender of the security. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. Short sales involve leverage because the Fund borrows securities and then sells them, effectively leveraging its assets. The use of leverage may magnify gains or losses for the Fund.

Tax Risk. In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in the ETPs, the Fund will be subject to the risks associated with such investment vehicles' investments, or reference assets in the case of ETNs, including the possibility that the value of the securities or instruments held or tracked by an ETP could decrease. These risks include any combination of the risks described below, as well as the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the ETPs and their exposure to various security types, currencies, market sectors and geographic regions.

Credit Risk . Certain of the ETPs are subject to the risk that a decline in the credit quality of a portfolio investment or a counterparty to a portfolio investment could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

Emerging Markets Risk . There is an increased risk of price volatility associated with an ETP's investments in, or an ETN's exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Equity Risk . The prices of equity securities in which an ETP invests or is exposed to rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

Fixed Income Risk . An ETP's investments in or exposure to fixed income securities are subject to the risk that the securities may be paid off earlier or later than expected. Either situation could cause the ETP to hold securities paying lower-than-market rates of interest, which could hurt the Fund's yield or share price.

Foreign Currency Risk . Currency movements may negatively impact the value of an ETP portfolio security even when there is no change in the value of the security in the issuer's home country. Certain of the ETPs may not hedge against the risk of currency exchange rate fluctuations, while other ETPs may if there is volatility in currency exchange rates.

Foreign Securities Risk . An ETP's investments in or exposure to foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

Geographic Investment Risk . An ETP may invest in or have exposure to the securities of issuers organized in one or more jurisdictions around the world, or in securities or instruments that provide exposure to such issuers. Such an ETP is likely to be impacted by economic conditions or events affecting the particular market or markets to which it is exposed. As of the date of this Prospectus, the Fund is expected to have significant exposure to the region listed below. The Sub-Advisor anticipates, however, that the Fund's exposure to particular regions and countries will vary greatly and may change frequently.

ASIA. To the extent an ETP has significant investment exposure to Asia, the ETP will be susceptible to loss due to adverse market, political, regulatory, and geographic events affecting that region. While certain Asian economies are exemplars of growth and development others have been and continue to be subject, to some extent, to over-extension of credit, currency devaluations and restrictions, high unemployment, high inflation, decreased exports and economic recessions.

Interest Rate Risk . An ETP's investments in or exposure to fixed income securities are subject to the risk that interest rates rise and fall over time. As with any investment whose yield reflects current interest rates, an ETP's yield will change over time. During periods when interest rates are low, an ETP's yield (and total return) also may be low. To the extent that the investment advisor (or sub-advisor) or issuer of an ETP anticipates interest rate trends imprecisely, the ETP could miss yield opportunities or its share price could fall.

Investment Risk . The Fund may experience losses with respect to its investment in an ETP. Further, there is no guarantee that an ETP will achieve its objective.

Large-Capitalization Risk . An ETP may invest in or have exposure to large-capitalization companies. Returns on investments in stocks of large U.S. companies could trail the returns on investments in stocks of small- and mid-capitalization companies or the market as a whole.

Mid-Capitalization Risk . An ETP may invest in or have exposure to mid-capitalization companies. Mid-cap companies may be more volatile and more likely than large-cap companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid-cap companies could trail the returns on investments in stocks of large- or small-cap companies or the market as a whole.

Real Estate Investment Trusts (REITs) Risk . Certain of the ETPs invest in REITs. An ETP'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. REITs are more dependent upon specialized management skills, have limited diversification and are, therefore, generally dependent on their ability to generate cash flow to make distributions to shareholders. In addition, REITs have their own expenses, and the ETP will bear a proportionate share of those expenses.

Small-Capitalization Risk . An ETP may invest in or have exposure to small-capitalization companies. Small-cap companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. In particular, small-cap companies may have limited product lines, markets, and financial resources and may be dependent upon a relatively small management group. These securities may be listed on an exchange or trade over-the-counter, and may or may not pay dividends. During a period when the performance of small-cap stocks falls behind that of other types of investments, such as large-cap stocks, the ETP's performance could be adversely affected.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

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 World Index, which is a free float-adjusted market capitalization weighted index designed to measure the equity market performance of developed 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.

The Fund's name and investment sub-advisor changed effective December 1, 2011. Prior to December 1, 2011, the Fund was named “Mars Hill Global Relative Value ETF” and sub-advised by Mars Hill Partners, LLC. While the Fund's investment objective and principal investment strategies remain substantially the same, the performance prior to December 1, 2011 may not be indicative of the Fund's performance under the new Sub-Advisor.

The Fund's year-to-date total return as of September 30, 2013 was -3.38%.

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

	Return		Quarter/Year
Highest Return	4.41	%	4Q/2012
Lowest Return	-11.61	%	1Q/2011

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

Average Annual Total Returns	Label		1 Year	Since Inception	Inception Date
AdvisorShares Accuvest Global Long Short ETF	Return Before Taxes Based on NAV		9.39%	(3.60%)	Jul. 08, 2010
AdvisorShares Accuvest Global Long Short ETF After Taxes on Distributions	Return After Taxes on Distributions	[1]	9.39%	(3.77%)	Jul. 08, 2010
AdvisorShares Accuvest Global Long Short ETF After Taxes on Distributions and Sales	Return After Taxes on Distributions and Sale of Fund Shares	[1]	6.10%	(3.14%)	Jul. 08, 2010
AdvisorShares Accuvest Global Long Short ETF MSCI World Index	MSCI World Index (Reflects no deduction for fees, expenses, or taxes)		15.83%	11.19%	Jul. 08, 2010

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.50% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[1] 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-deferred 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.

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Entity Central Index Key

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0001408970

AdvisorShares Pring Turner Business Cycle ETF (Prospectus Summary) | AdvisorShares Pring Turner Business Cycle ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

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Pring Turner Business Cycle ETF (NYSE Arca Ticker: DBIZ)

Objective [Heading]

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INVESTMENT OBJECTIVE 

Objective, Primary [Text Block]

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The Pring Turner Business Cycle ETF (the “Fund”) seeks long-term total return from capital appreciation and income.

Expense [Heading]

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FUND FEES AND EXPENSES

Expense Narrative [Text Block]

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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]

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SHAREHOLDER FEES(fees paid directly from your investment) None

Operating Expenses Caption [Text]

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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 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. 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. For the period from December 18, 2012, the Fund's commencement of operations, through the most recent fiscal year ended June 30, 2013, the Fund's portfolio turnover rate was 26% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

26.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include “Acquired Fund Fees and Expenses.”

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]

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The overriding investment goal of the Fund is to protect the value of the Fund's portfolio during unfavorable market conditions and to grow the value of the Fund's portfolio in favorable market conditions. Utilizing its proprietary business cycle research, Pring Turner Capital Group (the “Sub-Advisor”) proactively changes the Fund's asset allocation and sector emphasis in seeking to minimize the Fund's portfolio risk and to optimize portfolio returns throughout the business cycle. The Sub-Advisor will invest the Fund's portfolio in securities that provide diversified exposure to the three primary asset classes (i.e., stocks, bonds and commodities) across a wide range of economic sectors.

In seeking its objective, the Fund may invest in U.S. and foreign equity securities, including common and preferred stock, American Depositary Receipts (“ADRs”), high quality corporate debt securities (rated BBB or higher), affiliated and unaffiliated exchange-traded funds (“ETFs”), exchange-traded notes (“ETNs”), and cash and cash equivalents. The Fund may invest in securities of any capitalization range and in any market sector at any time as necessary to seek to achieve the Fund's investment objective.

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 that may affect the value of its shares, including:

American Depositary Receipt (ADR) 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 and changes in the exchange rates of foreign currencies. In addition, investments in ADRs may be less liquid than the underlying securities in their primary trading market.

Commodities Risk. The Fund's exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of commodities and commodity-linked financial instruments to which the Fund may be exposed may be affected by a variety of factors, including natural disasters and political and regulatory developments.

Credit Risk. The Fund is subject to the risk that an issuer of a fixed income security, such as a corporate bond, may be unable or unwilling to make interest and principal payments when due. The Fund is also subject to the related risk that the value of a fixed income security may decline because of concerns about the issuer's creditworthiness. Credit risk is heightened to the extent the Fund invests in high-yield securities or junk bonds.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time. 

Exchange-Traded Vehicle Risk. The Fund may invest in (or short) ETFs, ETNs and other exchange-traded products (collectively, “ETPs”). Through its positions in ETPs, the Fund will be subject to the risks associated with such ETP's 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 (ETN) 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.

Fixed Income Risk. The market value of fixed income investments in which the Fund may invest may change in response to interest rate changes and other factors. During periods of falling interest rates, the value of outstanding fixed income securities generally rise. Conversely, during periods of rising interest rates, the value of fixed income securities generally decline.

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.

Investment Risk. As with all investments, an investment in the Fund is subject to investment risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or even long periods of time.

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. The Sub-Advisor's judgment 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. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Tax Risk. In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.  

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

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As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Bar Chart and Performance Table [Heading]

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Fund Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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 One Year or Less [Text]

rr_PerformanceOneYearOrLess

A comparison of the Fund’s performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisorshares.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Of course, once the Fund has performance, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

AdvisorShares Pring Turner Business Cycle ETF (Prospectus Summary) | AdvisorShares Pring Turner Business Cycle ETF | AdvisorShares Pring Turner Business Cycle ETF

Risk/Return:

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MANAGEMENT FEES

rr_ManagementFeesOverAssets

1.00%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

3.70%

ACQUIRED FUND FEES AND EXPENSES

rr_AcquiredFundFeesAndExpensesOverAssets

0.12%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

4.82%

^[2]

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

3.21%

^[3]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

1.61%

^[2]

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 164

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,162

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,164

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 4,685

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and certain exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include 'Acquired Fund Fees and Expenses.'

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.49% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

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Entity Central Index Key

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0001408970

AdvisorShares Newfleet Multi-Sector Income ETF (Prospectus Summary) | AdvisorShares Newfleet Multi-Sector Income ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

NEWFLEET MULTI-SECTOR INCOME ETF (NYSE Arca Ticker: MINC)

Objective [Heading]

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INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Newfleet Multi-Sector Income ETF (the “Fund”) seeks to provide current income consistent with preservation of capital, while limiting fluctuations in net asset value (“NAV”) due to changes in interest rates.

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 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. 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. For the period from March 19, 2013, the Fund's commencement of operations, through the most recent fiscal year ended June 30, 2013, the Fund's portfolio turnover rate was 105% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

105.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

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

In seeking to achieve the Fund's investment objective, Newfleet Asset Management, LLC (the “Sub-Advisor”) applies a time-tested approach and extensive credit research to capitalize on opportunities across undervalued areas of the bond markets. The Fund principally invests in investment-grade securities, which are securities with credit ratings within the four highest rating categories of a nationally recognized statistical rating organization or, if unrated, those securities that the Sub-Advisor determines to be of comparable quality. The Sub-Advisor seeks to provide diversification by allocating the Fund's investments among various sectors of the fixed income markets, which, as of the date of this Prospectus, include: corporate investment-grade, corporate high-yield, bank loans, non-agency commercial mortgage-backed securities (“CMBSs”), agency and non-agency residential mortgage-backed securities (“RMBSs”), non-U.S. dollar securities, emerging market high-yield securities, Yankee investment-grade bonds, asset-backed securities, taxable municipal bonds, tax-exempt municipal bonds, and securities issued or guaranteed as to principal and interest by the U.S. government, its agencies, authorities or instrumentalities. As a result, the Fund's fixed income investments may be issued by various types of issuers and may include some or all of the following:

• Securities issued or guaranteed as to principal and interest by the U.S. government, its agencies, authorities or instrumentalities, including collateralized mortgage obligations (“CMOs”), real estate mortgage investment conduits (“REMICs”) and other pass-through securities;

• Debt securities issued by foreign issuers, including foreign governments and their political subdivisions;

• Investment-grade securities issued primarily by U.S. issuers and secondarily by non-U.S. issuers; and

• High-yield debt instruments, including bank loans, which are generally floating-rate loans.

The average duration of the Fund's fixed income investments will range from one to three years. The Fund may invest up to 20% of its total assets in securities that are rated below investment-grade at the time of purchase. If certain of the Fund's holdings experience a decline in their credit quality and fall below investment-grade, the Fund may continue to hold the securities and they will not count toward the Fund's 20% investment limit. Generally, the Fund will limit its investments in corporate high-yield securities to 10% of its assets and will limit its investments in non-U.S. issuers to 30% of its assets.

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 that may affect the value of its shares, including:

Credit Risk. The Fund is subject to the risk that an issuer of a fixed income security, such as a corporate bond, may be unable or unwilling to make interest and principal payments when due. The Fund is also subject to the related risk that the value of a fixed income security may decline because of concerns about the issuer's creditworthiness. Credit risk is heightened to the extent the Fund invests in below investment-grade securities, which are also referred to as high-yield securities or junk bonds.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Emerging Markets Risk. Certain of the Fund's investments will expose the Fund's portfolio to the risks of investing in emerging markets. Emerging markets, which consist of countries or markets with low to middle income economies as classified by the World Bank and other countries or markets with similar characteristics as determined by the Advisor, can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile.

Fixed Income Securities Risk. Fixed income securities are subject to the risk that securities could lose value because of interest rate changes. Fixed income securities with longer maturities are subject to greater price shifts as a result of interest rate changes than fixed income securities with shorter maturities. Fixed income securities also are subject to prepayment, interest rate, and credit risks.

Foreign Investment Risk. The Fund's investments in securities of foreign issuers 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. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

High-Yield Securities Risk. The Fund's investments in high-yield securities or “junk bonds” are subject to a greater risk of loss of income and principal than higher grade debt securities. The Fund's investments in high-yield securities also subjects the Fund to greater levels of interest rate, credit and liquidity risk than funds that do not invest in such securities. Issuers of junk bonds are often highly leveraged and are more vulnerable to changes in the economy. These securities are considered predominately speculative with respect to the issuer's continuing ability to make principal and interest payments.

Income Risk. The income from the Fund's investments may decline because of falling market interest rates. This can result when the Fund invests the proceeds from new share sales, or from matured or called bonds, at market interest rates that are below the Fund's portfolio current earnings rate.

Interest Rate Risk. The Fund's investment in fixed income securities will change in value in response to interest rate changes and other factors, such as the perception of the issuer's creditworthiness.

Investment Risk. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may experience losses with respect to its investment. Further, there is no guarantee that the Fund will be able to achieve its objective.

Issuer Risk. The value of the Fund's investment may decline for a reason directly related to the issuer of such security, such as management performance, financial leverage and reduced demand for the issuer's goods or services.

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.

Loan Participation Risk. The Fund may not have a readily available market for loan participation interests and, in some cases, the Fund may have to dispose of such securities at a substantial discount from face value. Loan participations also involve the credit risk associated with the underlying corporate borrower.

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 Fund's stated investment objective cannot be guaranteed over short- or long-term market cycles. The Sub-Advisor's judgment 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.

Mortgage-Backed and Asset-Backed Securities Risk. The risk that the impairment of the value of collateral underlying a mortgage-backed or asset-backed security, such as due to non-payment of loans, will result in a reduction in the value of such security.

Municipal Market Volatility Risk. The municipal market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities.

Premium-Discount Risk. The Fund's shares 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.

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

Prepayment Risk. The Fund may invest in mortgage related securities, which, like other debt securities, may be paid off early when the issuer of a debt security can repay the principal prior to a security's maturity. If interest rates are falling, the Fund may have to reinvest the unanticipated proceeds at lower interest rates, resulting in a decline in the Fund's income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

U.S. Government Securities Risk. The Fund may invest in U.S. government securities, which are subject to price fluctuations and to default in the event that an agency or instrumentality will default on an obligation not backed by the full faith and credit of the United States.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

FUND PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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 One Year or Less [Text]

rr_PerformanceOneYearOrLess

A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisorshares.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Of course, once the Fund has performance, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

AdvisorShares Newfleet Multi-Sector Income ETF (Prospectus Summary) | AdvisorShares Newfleet Multi-Sector Income ETF | AdvisorShares Newfleet Multi-Sector Income ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

0.65%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

0.48%

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

1.13%

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

0.38%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

0.75%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 77

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

322

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

587

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,344

[1] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses to keep the Fund's Total Annual Fund Operating 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 0.75% of the Fund's average daily net assets for at least a year from the date of this Prospectus. The expense limitation 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Entity Central Index Key

dei_EntityCentralIndexKey

0001408970

AdvisorShares Peritus High Yield ETF (Prospectus Summary) | AdvisorShares Peritus High Yield ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

PERITUS HIGH YIELD ETF (NYSE Arca Ticker: HYLD)

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Peritus High Yield ETF (the “Fund”) seeks high current income with a secondary goal of 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 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. 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, 2013, the Fund's portfolio turnover rate was 37% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

37.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

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

Peritus I Asset Management, LLC (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by selecting a focused portfolio of high-yield debt securities (commonly referred to as “junk bonds”), which include senior and subordinated corporate debt obligations (such as loans, bonds, debentures, notes and commercial paper). The Fund does not have any portfolio maturity limitation and may invest its assets in instruments with short-term, medium-term or long-term maturities. The Fund also may invest, to a lesser extent, in equity securities that the Sub-Advisor believes will yield high dividends or are otherwise consistent with the Fund's investment objective.

In selecting securities for the Fund's portfolio, the Sub-Advisor, subject to the oversight of the Advisor and the Board, performs an independent investment analysis of each issuer to determine its creditworthiness. The Sub-Advisor takes a deep value contrarian approach to the credit markets, foregoing relative value and new issue participation in favor of absolute returns. The Sub-Advisor focuses on the secondary market, predominantly investing in assets at a discount to par ($100), allowing for a potential opportunity to generate capital gains in addition to current yield. The Sub-Advisor believes that structural and technical inefficiencies exist in the secondary credit markets, which create tremendous investment opportunities, and that, by holding a diversified but limited number of securities, the portfolio will be constructed of securities that provide exposure to industries believed to offer the most value to the Fund.

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 that may affect the value of its shares, including:

Credit Risk. The Fund is subject to the risk that an issuer of a fixed income security, such as a corporate bond, may be unable or unwilling to make interest and principal payments when due. The Fund is also subject to the related risk that the value of a fixed income security may decline because of concerns about the issuer's creditworthiness. Credit risk is heightened to the extent the Fund invests in high-yield securities or junk bonds.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Fixed Income Risk. The market value of fixed income investments in which the Fund may invest may change in response to interest rate changes and other factors. During periods of falling interest rates, the value of outstanding fixed income securities generally rise. Conversely, during periods of rising interest rates, the value of fixed income securities generally decline.

High-Yield Risk. The Fund's investments in high-yield securities and unrated securities of similar credit quality (commonly known as “junk bonds”) may be subject to greater levels of interest rate, credit and liquidity risk than funds that do not invest in such securities. These securities are considered predominately speculative with respect to the issuer's continuing ability to make principal and interest payments.

Issuer Risk. The value of a security may increase for a number of reasons which directly relate to the issuer, such as management performance, improved financial condition and increased demand of the issuer's goods or services. An increase in the value of the securities of an issuer or guarantor of a debt instrument may cause the value of your investment in the Fund to decrease.

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.

Loan Participation Risk. The Fund may not have a readily available market for loan participation interests and, in some cases, the Fund may have to dispose of such securities at a substantial discount from face value. Loan participations also involve the credit risk associated with the underlying corporate borrower.

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. 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. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Prepayment Risk. The Fund may invest in mortgage related securities, which may be paid off early if the borrower on the underlying mortgagee prepays the mortgage or refinances the mortgage prior to the maturity date. If interest rates are falling, the Fund may have to reinvest the unanticipated proceeds at lower interest rates, resulting in a decline in the Fund's income.

Trading Risk. A lthough the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

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 Barclays U.S. Corporate High Yield Index, which is an unmanaged index considered representative of the universe of U.S. fixed rate, non-investment-grade debt. 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 Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

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.

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund's year-to-date total return as of September 30, 2013 was 9.03%.

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

	Return	Quarter/Year
Highest Return	6.89%	1Q/2012
Lowest Return	-7.05%	3Q/2011

Performance Table Heading

rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

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

rr_IndexNoDeductionForFeesExpensesTaxes

Reflects no deduction for fees, expenses, or taxes

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-deferred 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 Peritus High Yield ETF (Prospectus Summary) | AdvisorShares Peritus High Yield ETF | Barclays U.S. Corporate High Yield Index

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Barclays U.S. Corporate High Yield Index (Reflects no deduction for fees, expenses, or taxes)

1 Year

rr_AverageAnnualReturnYear01

15.81%

Since Inception

rr_AverageAnnualReturnSinceInception

10.78%

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 30, 2010

AdvisorShares Peritus High Yield ETF (Prospectus Summary) | AdvisorShares Peritus High Yield ETF | AdvisorShares Peritus High Yield ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

1.10%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

0.13%

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

1.23%

FEE WAIVER/EXPENSE REIMBURSEMENT OR RECAPTURED EXPENSE

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER/EXPENSE REIMBURSEMENT OR RECAPTURED EXPENSE

rr_NetExpensesOverAssets

1.25%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 128

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

394

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

680

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,496

Annual Return 2011

rr_AnnualReturn2011

1.92%

Annual Return 2012

rr_AnnualReturn2012

15.11%

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

9.03%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

6.89%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(7.05%)

Label

rr_AverageAnnualReturnLabel

Return Before Taxes Based on NAV

1 Year

rr_AverageAnnualReturnYear01

15.11%

Since Inception

rr_AverageAnnualReturnSinceInception

8.61%

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 30, 2010

AdvisorShares Peritus High Yield ETF (Prospectus Summary) | AdvisorShares Peritus High Yield ETF | AdvisorShares Peritus High Yield ETF | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

^[2]

1 Year

rr_AverageAnnualReturnYear01

11.75%

Since Inception

rr_AverageAnnualReturnSinceInception

5.49%

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 30, 2010

AdvisorShares Peritus High Yield ETF (Prospectus Summary) | AdvisorShares Peritus High Yield ETF | AdvisorShares Peritus High Yield ETF | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

^[2]

1 Year

rr_AverageAnnualReturnYear01

9.71%

Since Inception

rr_AverageAnnualReturnSinceInception

5.49%

Inception Date

rr_AverageAnnualReturnInceptionDate

Nov. 30, 2010

[1] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.35% of the Fund's average daily net assets for at least a year from the date of this Prospectus. Pursuant to the expense limitation agreement, the Advisor is entitled to recapture any fees the Advisor waives and Fund expenses the Advisor reimburses until the third anniversary of the end of the fiscal year in which such waiver and/or reimbursement occurs, to the extent that such recapture by the Advisor will not cause the Fund to exceed the applicable expense limitation in place for the Fund. 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 at its principal place of business, 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-deferred 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.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Entity Central Index Key

dei_EntityCentralIndexKey

0001408970

AdvisorShares Global Echo ETF (Prospectus Summary) | AdvisorShares Global Echo ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

ADVISORSHARES GLOBAL ECHO ETF (NYSE Arca Ticker: GIVE)

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

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The AdvisorShares Global Echo ETF (the “Fund”) seeks to achieve long-term capital appreciation with an emphasis on absolute (positive) returns and low sensitivity to traditional financial market indices, such as the S&P 500 Index, over a full market cycle.

Expense [Heading]

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FUND FEES AND EXPENSES

Expense Narrative [Text Block]

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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]

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SHAREHOLDER FEES(fees paid directly from your investment) None

Operating Expenses Caption [Text]

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ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

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PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

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The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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, 2013, the Fund's portfolio turnover rate was 180% of the average value of its portfolio.

Portfolio Turnover, Rate

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180.00%

Expense Exchange Traded Fund Commissions [Text]

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Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

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The Total Annual Fund Operating Expenses in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include Acquired Fund Fees and Expenses.

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 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.

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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The Fund is a multi-manager, multi-strategy, broadly diversified, actively managed exchange-traded fund (“ETF”) with a focus on Sustainable Investing. Sustainable Investing generally refers to an investment methodology that takes into consideration economic, environmental, technology, and a variety of social factors when making investment decisions. Accordingly, the Fund is designed as a core allocation that proactively seeks Sustainable Investment-themed investment opportunities that may socially and environmentally benefit the earth, with a focus on water, clean energy, community development, innovation and other sustainable themes across asset classes. Sustainable Investment themes that the Fund may pursue include, but are not limited to, the following: economic themes (e.g., corporate governance, risk and crisis management, community investment, energy efficiency, food, green building); environmental themes (e.g., air, water, earth); technology themes (e.g., mobility, renewable energy, technology, access); and social themes (e.g., human health, occupational health and safety).
 

The Fund's namesake is the Global Echo Foundation, a charitable foundation co-founded by Philippe Cousteau, Jr. The Global Echo Foundation's mission is to promote sustainable development across a number of different themes, including social, environmental, and entrepreneurship. The Fund was designed to pursue sustainable investment opportunities among the same themes thereby promoting the Global Echo Foundation's mission of increased sustainable development. To further support the Global Echo Foundation, the Fund will make regular monetary contributions to the Foundation. The Global Echo Foundation will not participate in or have any influence on the day-to-day operations of the Fund or the Advisor's and Sub-Advisors' management of the Fund.

The Fund seeks to achieve its investment objective by allocating a portion of the Fund's assets to each of the Fund's Sub-Advisors who will employ their respective investment strategies to generate absolute returns over a full market cycle. Generally, a full market cycle consists of a bull market followed by a bear market and a return to a bull market, or vice versa. Initially, an equal proportion of the Fund's assets will be allocated to each Sub-Advisor to obtain the desired exposure to the strategies described below. The allocation among Sub-Advisors will vary over time in response to a variety of factors including prevailing market conditions. The Advisor has designated First Affirmative Financial Network, LLC (“First Affirmative”) to allocate and monitor the allocation of the Fund's assets to each Sub-Advisor to ensure that the Fund's portfolio maintains the proper investment exposure to seek to achieve its investment objective. Each Sub-Advisor will seek to identify and invest either directly or indirectly through other ETFs, in securities of companies that are making a positive impact in the world and reflect Sustainable Investment themes, including corporate sustainability. The Fund's investments in companies that practice corporate sustainability provide an additional layer of diversification because such investments are designed to increase long-term shareholder value. Companies focused on corporate sustainability also can provide more attractive risk return profiles for investors, and can leverage various other Sustainable Investment themes.

The Fund invests primarily in U.S. and foreign equity securities, including common and preferred stock, American Depository Receipts (“ADRs”), fixed income securities, including municipal bonds, and affiliated and unaffiliated ETFs. The Fund may take both long and short positions in any of these investments. A long position is the purchase of an investment with the expectation that it will rise in value. A short position is the sale of a borrowed investment with the expectation that it will decline in value. The Fund may invest up to 65% (and intends to always invest at least 15%) of its net assets in domestic and foreign fixed income securities. The Fund may invest in securities of any capitalization range and may employ one or more investment styles (from growth to value) at any time as necessary to seek to achieve the Fund's investment objective.

Each Sub-Advisor will determine whether to buy or sell an investment for the Fund's portfolio by applying one or more of the following strategies:

Core Strategies

○Fixed Income Strategies. Fixed income strategies consist of investment strategies that invest primarily in debt securities of domestic and foreign governments, agencies, and instrumentalities, municipalities, and companies of all maturities and qualities (including “junk bonds” and up to 15% of the Fund's total assets in defaulted debt securities), TIPS (Treasury Inflation Protected Securities), and ETFs that provide exposure to fixed income securities or strategies. Debt securities of foreign governments are sometimes referred to as sovereign debt obligations and may be issued or guaranteed by foreign governments or their agencies. The Fund may invest in mortgage-backed securities, collateralized mortgage obligations, asset-backed securities, and other mortgage related securities (“Mortgage Related Securities”). Fixed income strategies also may involve hedging through the use of investments in other ETFs to enhance risk-adjusted return.

○Equity Strategies. Equity strategies consist of both domestic and international/emerging markets strategies. The domestic equity strategies seek to invest in securities of companies that the Sub-Advisor believes will outperform other equities securities over the long term. The international/emerging markets equity strategies seek to invest in securities of undervalued international companies through ADRs that provide the Fund with exposure to businesses outside of the U.S. and that are attractively priced relative to their economic fundamentals. Both U.S. and international investments are selected using fundamental analysis of factors such as earnings, cash flows, and valuations based upon them, and are diversified among the economic and industry sectors in the S&P 500^® Index, the Morgan Stanley Capital International (MSCI) All Country World Index, MSCI Europe, Australasia and Far East Index, and MSCI Emerging Markets Index.

Alternative Strategies

○Long/Short and Hedging Strategies. Alternative strategies consist of strategies that combine short sales of equities (including shares of ETFs) or purchase of shares of inverse ETFs. As such, long/short strategies may utilize securities that seek to track indexes on markets, sectors, strategies and/or industries to hedge against potential adverse movements in security prices. The Fund may implement multiple variations of long/short and hedging strategies. The basic long/short equity strategies generally seek to increase net long exposure in a bull market and decrease net long exposure, by holding high concentrations in cash or investing 100% short, in a bear market.

Risk [Heading]

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PRINCIPAL RISKS OF INVESTING IN THE FUND 

Risk Narrative [Text Block]

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The Fund is subject to a number of risks that may affect the value of its shares, including:

American Depositary Receipt (ADR) 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 and changes in the exchange rates of foreign currencies. In addition, investments in ADRs may be less liquid than the underlying securities in their primary trading market.

Credit Risk. The Fund is subject to the risk that an issuer of a fixed income security, such as a municipal bond, may be unable or unwilling to make interest and principal payments when due. The Fund is also subject to the related risk that the value of a fixed income security may decline because of concerns about the issuer's creditworthiness. Credit risk is heightened to the extent the Fund invests in high yield securities or junk bonds.

Currency Risk. The Fund's indirect and direct exposure to foreign currencies subjects the Fund to the risk that those currencies will decline in value relative to the U.S. dollar.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Emerging Markets Risk. Certain of the Fund's investments will expose the Fund's portfolio to the risks of investing in emerging markets. Emerging markets, which consist of countries or markets with low to middle income economies as classified by the World Bank and other countries or markets with similar characteristics as determined by the Advisor, can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

ETF Risk. Through its investments in ETFs, the Fund will be subject to the risks associated with the ETFs' investments, including the possibility that the value of the securities held by an ETF could decrease.

Fixed Income Risk. Fixed income securities are subject to the risk that securities could lose value because of interest rate changes. Fixed income securities with longer maturities are subject to greater price shifts as a result of interest rate changes than fixed income securities with shorter maturities. Fixed income securities also are subject to prepayment, interest rate, and credit risks.

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. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

High-Yield Securities Risk. The risk that high-yield debt securities or “junk bonds” are subject to a greater risk of loss of income and principal than higher-grade debt securities. Issuers of junk bonds are often highly leveraged and are more vulnerable to changes in the economy.

Investment Risk. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may experience losses with respect to its investment. Further, there is no guarantee that the Fund will be able to achieve its objective.

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-Advisors continuously evaluate 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. The Sub-Advisors' judgment 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 Fund's investments may fluctuate significantly from day to day.  This volatility may cause the value of your investment in the Fund to decrease.

Mortgage-Backed Securities Risk. Mortgage-backed securities may be affected by, among other things, changes or perceived changes in interest rates and the quality of the underlying assets. The underlying assets may default or decline in quality or value.

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

Premium-Discount Risk. The Fund's shares 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.

Short Sales Risk. Short sales are transactions in which the Fund sells a security it does not own. To complete the transaction, the Fund must borrow the security to make delivery to the buyer. The Fund is then obligated to replace the security borrowed by purchasing the security at the market price at the time of replacement. The price at such time may be higher or lower than the price at which the security was sold by the Fund. If the underlying security goes down in price between the time the Fund sells the security and buys it back, the Fund will realize a gain on the transaction. Conversely, if the underlying security goes up in price during the period, the Fund will realize a loss on the transaction. Any such loss is increased by the amount of premium or interest the Fund must pay to the lender of the security. Likewise, any gain will be decreased by the amount of premium or interest the Fund must pay to the lender of the security. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. Short sales involve leverage because the Fund borrows securities and then sells them, effectively leveraging its assets. The use of leverage may magnify gains or losses for the Fund.

Strategy Risk. The risk that investment strategies employed by the Advisor and Sub-Advisors 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 investments. There is no guarantee that the Fund's investment strategies will succeed in limiting the Fund's exposure to stock market movements, capitalization and sector swings, or other risk factors.

Sustainable Investments Risk. The Fund's investments in sustainable investment theme issuers may subject the Fund to the risk that the securities of such issuers will underperform other economic sectors or the market as a whole.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

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As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Not Insured Depository Institution [Text]

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An investment in the Fund is not a bank deposit 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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FUND PERFORMANCE

Performance Narrative [Text Block]

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A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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 One Year or Less [Text]

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A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year.

Performance Availability Website Address [Text]

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www.advisorshares.com

Performance Past Does Not Indicate Future [Text]

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Of course, once the Fund has performance, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

AdvisorShares Global Echo ETF (Prospectus Summary) | AdvisorShares Global Echo ETF | AdvisorShares Global Echo ETF

Risk/Return:

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MANAGEMENT FEES

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1.10%

DISTRIBUTION (12b-1) FEES

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none

OTHER EXPENSES

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0.40%

ACQUIRED FUND FEES AND EXPENSES

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0.11%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

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1.61%

^[2]

Expense Example, with Redemption, 1 Year

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$ 164

Expense Example, with Redemption, 3 Years

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509

Expense Example, with Redemption, 5 Years

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877

Expense Example, with Redemption, 10 Years

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$ 1,913

[1] As a shareholder in certain underlying exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

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AdvisorShares Global Alpha & Beta ETF (Prospectus Summary) | AdvisorShares Global Alpha & Beta ETF

AdvisorShares Global Alpha & Beta ETF (NYSE Arca Ticker: RRGR)

INVESTMENT OBJECTIVE  

The AdvisorShares Global Alpha & Beta ETF (the “Fund”) seeks long-term capital growth.

FUND FEES AND EXPENSES

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(fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Global Alpha & Beta ETF
MANAGEMENT FEES		1.00%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		5.95%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.23%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	7.18%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[3]	5.70%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[2]	1.48%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Global Alpha & Beta ETF	150	1,604	2,995	6,216

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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. For the period from July 10, 2012, the Fund's commencement of operations, through the most recent fiscal year ended June 30, 2013, the Fund's portfolio turnover rate was 43% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund is, in part, a ‘‘fund of funds'' that seeks to achieve its investment objective by investing primarily in other exchange-traded funds (“ETFs''), common stock of issuers of any capitalization range, and American Depositary Receipts (“ADRs”) that provide investment exposure to global equity markets and that meet certain selection criteria established by Your Source Financial, PLC (the “Sub-Advisor”).

The Sub-Advisor seeks to achieve the Fund's investment objective by actively managing the Fund's portfolio with a “top-down” perspective, focusing on tactical asset allocation and proprietary security selection. Prior to making an investment for the Fund, the Sub-Advisor will consider two indicators: (i) the 200-day moving average of the S&P 500 Index (the “Index”) and (ii) an inverted yield curve. If the Index is below its 200-day moving average or if the yield curve is inverted, the Sub-Advisor will maintain a defensive position in the Fund's portfolio.

The Fund's asset allocation and performance baseline benchmark is the Index. The Index consists of ten separate economic sectors - each of which has a weighting in the Index as a whole. In selecting investments for the Fund's portfolio, the Sub-Advisor will seek to add value by overweighting sectors that the Sub-Advisor expects to perform well and underweighting sectors that it expects to perform poorly.

The Sub-Advisor seeks to maintain diversification among and across economic sectors, industries and countries. When selling investments in the Fund's portfolio, the Sub-Advisor will consider the following factors: (i) whether equity has reached price considered to be fully valued; (ii) business or sector risk exposure to a specific security or class of securities; (iii) overvaluation or overweighting of the position in the Fund's portfolio; (iv) change in risk tolerance; and (v) identification of a better opportunity.

On a day-to-day basis, the Fund may hold money market instruments, cash, other cash equivalents, and ETFs that invest in these and other highly liquid instruments.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETFs and the allocation of assets among such ETFs will cause the Fund to underperform other funds with a similar investment objective that seek to achieve their investment objectives by investing directly in the securities held by ETFs, by investing in a different selection of ETFs, or by pursuing a different allocation of assets among such ETFs.

American Depositary Receipt (ADR) 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 and changes in the exchange rates of foreign currencies. In addition, investments in ADRs may be less liquid than the underlying securities in their primary trading market.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Investment Risk. As with all investments, an investment in the Fund is subject to investment risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or even long periods of time.

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.

Market Risk. Due to market conditions, the value of the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETF Investment Risk. Through its investments in other ETFs, the Fund will be subject to the risks associated with such ETFs' investments, including the possibility that the value of the securities or instruments held or tracked by an ETF could decrease. These risks include any combination of the risks described below, as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the ETFs and their exposure to various security types, currencies, market sectors, and geographic regions.

· Concentration Risk . An ETF may, at various times, concentrate in the securities of a particular industry, group of industries, or sector. When an ETF is over-weighted in an industry, group of industries, or sector, it may be more sensitive to any single economic, business, political, or regulatory occurrence than a fund that is not over-weighted in an industry, group of industries, or sector.

·Counterparty Risk. Commodity-linked derivatives, repurchase agreements, swap agreements and other forms of financial instruments that involve counterparties subject an ETF to the risk that the counterparty could default on its obligations under the agreement, either through the counterparty's bankruptcy or failure to perform its obligations.

·Credit Risk. Certain of the ETFs are subject to the risk that a decline in the credit quality of a portfolio investment or a counterparty to a portfolio investment could cause the ETF's share price to fall. The ETFs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

·Emerging Markets Risk.There is an increased risk of price volatility associated with an ETF's investments in, or exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

·Equity Risk.The prices of equity securities in which an ETF invests or is exposed to rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

·Foreign Currency Risk. Currency movements may negatively impact the value of an ETF portfolio security even when there is no change in the value of the security in the issuer's home country. Certain of the ETFs may not hedge against the risk of currency exchange rate fluctuations, while other ETFs may if there is volatility in currency exchange rates.

·Foreign Securities Risk. An ETF's investments in, or exposure to, foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

·Investment Risk. The Fund may experience losses with respect to its investment in an ETF. Further, there is no guarantee that an ETF will be able to achieve its objective.

· Tracking Error Risk . Tracking error can arise due to factors such as the affect of transaction fees and expenses incurred by an ETF, changes in composition of an ETF's benchmark, and the ability of the ETF's manager or sponsor to successfully implement his or her investment strategy.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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.

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.25% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

XML

Label

Element

Value

Risk/Return:

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Entity Central Index Key

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0001408970

AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF (Prospectus Summary) | AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

WCM / BNY MELLON FOCUSED GROWTH ADR ETF (NYSE Arca Ticker: AADR)

Objective [Heading]

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INVESTMENT OBJECTIVE 

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The WCM/BNY Mellon Focused Growth ADR ETF (the “Fund”) seeks long-term capital appreciation above international benchmarks such as the BNY Mellon Classic ADR Index, the Fund's primary benchmark, and the MSCI EAFE Index, the Fund's secondary benchmark.

Expense [Heading]

rr_ExpenseHeading

FUND FEES AND EXPENSES

Expense Narrative [Text Block]

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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]

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SHAREHOLDER FEES (fees paid directly from your investment) None

Operating Expenses Caption [Text]

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ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

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PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

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The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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, 2013, the Fund's portfolio turnover rate was 38% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

38.00%

Expense Exchange Traded Fund Commissions [Text]

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Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

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The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include Acquired Fund Fees and Expenses.

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 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]

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PRINCIPAL INVESTMENT STRATEGIES 

Strategy Narrative [Text Block]

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WCM Investment Management (the “Sub-Advisor”), the sub-advisor to the Fund, seeks to achieve the Fund's investment objective by selecting primarily a portfolio of U.S.-traded securities of non-U.S. organizations, most often American Depositary Receipts (“ADRs”), included in the BNY Mellon Classic ADR Index. The Fund's investment focus follows the Sub-Advisor's core philosophy of investing in industry-leading non-U.S. organizations led by visionary management teams with sound business strategies. The Sub-Advisor believes that these companies often dominate their industry and are likely to continue that domination well into the future. The Sub-Advisor establishes guidelines for sector and industry emphasis and develops the portfolio of the Fund. The Sub-Advisor analyzes the major trends in the global economy in order to identify those economic sectors and industries that are most likely to benefit. Typical themes incorporated in their investment process include demographics, global commerce, outsourcing, the growing global middle class and the proliferation of technology. A portfolio strategy is then implemented that will best capitalize on these investment themes and subsequent expected growth of the underlying assets.

Risk [Heading]

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PRINCIPAL RISKS OF INVESTING IN THE FUND

Risk Narrative [Text Block]

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The Fund is subject to a number of risks that may affect the value of its shares, including:

American Depositary Receipt (ADR) 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 and changes in the exchange rates of foreign currencies. In addition, investments in ADRs may be less liquid than the underlying securities in their primary trading market.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Emerging Markets Risk. Certain of the Fund's investments will expose the Fund's portfolio to the risks of investing in emerging markets. Emerging markets, which consist of countries or markets with low to middle income economies as classified by the World Bank and other countries or markets with similar characteristics as determined by the Advisor, can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Foreign Currency Risk. The Fund's exposure to foreign currencies subjects the Fund to the risk that those currencies will decline in value relative to the U.S. dollar.

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.

Investment Risk. As with all investments, an investment in the Fund is subject to investment risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or even long periods of time.

Large-Capitalization Risk. The Fund may invest in large-capitalization companies. Large-capitalization securities tend to go in and out of favor based on market and economic conditions. During a period when the demand for large-capitalization securities is less than for other types of investments - small-capitalization securities, for instance - the Fund's performance could be reduced.

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.

Market Risk. Due to market conditions, the value of the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares may trade above or below their NAV. The trading price of the Fund's shares may deviate significantly from their NAV during periods of market volatility.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

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Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or even long periods of time.

Bar Chart and Performance Table [Heading]

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FUND PERFORMANCE

Performance Narrative [Text Block]

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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 EAFE Index, which is an unmanaged free float-adjusted market capitalization index that is designed to measure the equity market performance of developed markets, excluding the U.S. and Canada. 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 Information Illustrates Variability of Returns [Text]

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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.

Performance Availability Website Address [Text]

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www.advisorshares.com

Performance Past Does Not Indicate Future [Text]

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Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

Bar Chart Closing [Text Block]

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The Fund's year-to-date total return as of September 30, 2013 was 13.74%.

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

	Return	Quarter/Year
Highest Return	11.54%	1Q/2012
Lowest Return	-17.90%	3Q/2011

Performance Table Heading

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AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

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

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Reflects no deduction for fees, expenses, or taxes

Performance Table Uses Highest Federal Rate

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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

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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-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table Explanation after Tax Higher

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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.

Performance Table Closing [Text Block]

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Updated performance information is available on the Fund's website at www.advisorshares.com.

AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF (Prospectus Summary) | AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF | MSCI EAFE Index

Risk/Return:

rr_RiskReturnAbstract

Label

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MSCI EAFE Index (Reflects no deduction for fees, expenses, or taxes)

1 Year

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17.32%

Since Inception

rr_AverageAnnualReturnSinceInception

8.41%

Inception Date

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Jul. 20, 2010

AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF (Prospectus Summary) | AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF | AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

0.75%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

1.77%

ACQUIRED FUND FEES AND EXPENSES

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

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2.53%

^[2]

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

1.27%

^[3]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

1.26%

^[2]

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 128

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

665

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,229

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 2,766

Annual Return 2011

rr_AnnualReturn2011

(5.81%)

Annual Return 2012

rr_AnnualReturn2012

12.65%

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

13.74%

Highest Quarterly Return, Label

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Highest Return

Highest Quarterly Return, Date

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Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

11.54%

Lowest Quarterly Return, Label

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Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

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(17.90%)

Label

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Return Before Taxes Based on NAV

1 Year

rr_AverageAnnualReturnYear01

12.65%

Since Inception

rr_AverageAnnualReturnSinceInception

10.10%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 20, 2010

AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF (Prospectus Summary) | AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF | AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

^[4]

1 Year

rr_AverageAnnualReturnYear01

12.81%

Since Inception

rr_AverageAnnualReturnSinceInception

10.14%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 20, 2010

AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF (Prospectus Summary) | AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF | AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

^[4]

1 Year

rr_AverageAnnualReturnYear01

8.51%

Since Inception

rr_AverageAnnualReturnSinceInception

8.79%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 20, 2010

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.25% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[4] 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-deferred 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.

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AdvisorShares Newfleet Multi-Sector Income ETF (Prospectus Summary) | AdvisorShares Newfleet Multi-Sector Income ETF

NEWFLEET MULTI-SECTOR INCOME ETF (NYSE Arca Ticker: MINC)

INVESTMENT OBJECTIVE

The Newfleet Multi-Sector Income ETF (the “Fund”) seeks to provide current income consistent with preservation of capital, while limiting fluctuations in net asset value (“NAV”) due to changes in interest rates.

FUND FEES AND EXPENSES

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(fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Newfleet Multi-Sector Income ETF
MANAGEMENT FEES		0.65%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		0.48%
TOTAL ANNUAL FUND OPERATING EXPENSES		1.13%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[1]	0.38%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT		0.75%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Newfleet Multi-Sector Income ETF	77	322	587	1,344

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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. For the period from March 19, 2013, the Fund's commencement of operations, through the most recent fiscal year ended June 30, 2013, the Fund's portfolio turnover rate was 105% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

In seeking to achieve the Fund's investment objective, Newfleet Asset Management, LLC (the “Sub-Advisor”) applies a time-tested approach and extensive credit research to capitalize on opportunities across undervalued areas of the bond markets. The Fund principally invests in investment-grade securities, which are securities with credit ratings within the four highest rating categories of a nationally recognized statistical rating organization or, if unrated, those securities that the Sub-Advisor determines to be of comparable quality. The Sub-Advisor seeks to provide diversification by allocating the Fund's investments among various sectors of the fixed income markets, which, as of the date of this Prospectus, include: corporate investment-grade, corporate high-yield, bank loans, non-agency commercial mortgage-backed securities (“CMBSs”), agency and non-agency residential mortgage-backed securities (“RMBSs”), non-U.S. dollar securities, emerging market high-yield securities, Yankee investment-grade bonds, asset-backed securities, taxable municipal bonds, tax-exempt municipal bonds, and securities issued or guaranteed as to principal and interest by the U.S. government, its agencies, authorities or instrumentalities. As a result, the Fund's fixed income investments may be issued by various types of issuers and may include some or all of the following:

• Securities issued or guaranteed as to principal and interest by the U.S. government, its agencies, authorities or instrumentalities, including collateralized mortgage obligations (“CMOs”), real estate mortgage investment conduits (“REMICs”) and other pass-through securities;

• Debt securities issued by foreign issuers, including foreign governments and their political subdivisions;

• Investment-grade securities issued primarily by U.S. issuers and secondarily by non-U.S. issuers; and

• High-yield debt instruments, including bank loans, which are generally floating-rate loans.

The average duration of the Fund's fixed income investments will range from one to three years. The Fund may invest up to 20% of its total assets in securities that are rated below investment-grade at the time of purchase. If certain of the Fund's holdings experience a decline in their credit quality and fall below investment-grade, the Fund may continue to hold the securities and they will not count toward the Fund's 20% investment limit. Generally, the Fund will limit its investments in corporate high-yield securities to 10% of its assets and will limit its investments in non-U.S. issuers to 30% of its assets.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Credit Risk. The Fund is subject to the risk that an issuer of a fixed income security, such as a corporate bond, may be unable or unwilling to make interest and principal payments when due. The Fund is also subject to the related risk that the value of a fixed income security may decline because of concerns about the issuer's creditworthiness. Credit risk is heightened to the extent the Fund invests in below investment-grade securities, which are also referred to as high-yield securities or junk bonds.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Emerging Markets Risk. Certain of the Fund's investments will expose the Fund's portfolio to the risks of investing in emerging markets. Emerging markets, which consist of countries or markets with low to middle income economies as classified by the World Bank and other countries or markets with similar characteristics as determined by the Advisor, can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile.

Fixed Income Securities Risk. Fixed income securities are subject to the risk that securities could lose value because of interest rate changes. Fixed income securities with longer maturities are subject to greater price shifts as a result of interest rate changes than fixed income securities with shorter maturities. Fixed income securities also are subject to prepayment, interest rate, and credit risks.

Foreign Investment Risk. The Fund's investments in securities of foreign issuers 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. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

High-Yield Securities Risk. The Fund's investments in high-yield securities or “junk bonds” are subject to a greater risk of loss of income and principal than higher grade debt securities. The Fund's investments in high-yield securities also subjects the Fund to greater levels of interest rate, credit and liquidity risk than funds that do not invest in such securities. Issuers of junk bonds are often highly leveraged and are more vulnerable to changes in the economy. These securities are considered predominately speculative with respect to the issuer's continuing ability to make principal and interest payments.

Income Risk. The income from the Fund's investments may decline because of falling market interest rates. This can result when the Fund invests the proceeds from new share sales, or from matured or called bonds, at market interest rates that are below the Fund's portfolio current earnings rate.

Interest Rate Risk. The Fund's investment in fixed income securities will change in value in response to interest rate changes and other factors, such as the perception of the issuer's creditworthiness.

Investment Risk. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may experience losses with respect to its investment. Further, there is no guarantee that the Fund will be able to achieve its objective.

Issuer Risk. The value of the Fund's investment may decline for a reason directly related to the issuer of such security, such as management performance, financial leverage and reduced demand for the issuer's goods or services.

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.

Loan Participation Risk. The Fund may not have a readily available market for loan participation interests and, in some cases, the Fund may have to dispose of such securities at a substantial discount from face value. Loan participations also involve the credit risk associated with the underlying corporate borrower.

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 Fund's stated investment objective cannot be guaranteed over short- or long-term market cycles. The Sub-Advisor's judgment 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.

Mortgage-Backed and Asset-Backed Securities Risk. The risk that the impairment of the value of collateral underlying a mortgage-backed or asset-backed security, such as due to non-payment of loans, will result in a reduction in the value of such security.

Municipal Market Volatility Risk. The municipal market is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities.

Premium-Discount Risk. The Fund's shares 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.

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

Prepayment Risk. The Fund may invest in mortgage related securities, which, like other debt securities, may be paid off early when the issuer of a debt security can repay the principal prior to a security's maturity. If interest rates are falling, the Fund may have to reinvest the unanticipated proceeds at lower interest rates, resulting in a decline in the Fund's income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

U.S. Government Securities Risk. The Fund may invest in U.S. government securities, which are subject to price fluctuations and to default in the event that an agency or instrumentality will default on an obligation not backed by the full faith and credit of the United States.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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.

[1] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses to keep the Fund's Total Annual Fund Operating 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 0.75% of the Fund's average daily net assets for at least a year from the date of this Prospectus. The expense limitation 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

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Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Entity Registrant Name	dei_EntityRegistrantName	AdvisorShares Trust
Entity Central Index Key	dei_EntityCentralIndexKey	0001408970
Document Creation Date	dei_DocumentCreationDate	Oct. 28, 2013
Document Effective Date	dei_DocumentEffectiveDate	Oct. 28, 2013
Prospectus Date	rr_ProspectusDate	Oct. 28, 2013

XML

AdvisorShares Ranger Equity Bear ETF (Prospectus Summary) | AdvisorShares Ranger Equity Bear ETF

RANGER EQUITY BEAR ETF (NYSE Arca Ticker: HDGE)

INVESTMENT OBJECTIVE

The Ranger Equity Bear ETF (the “Fund”) seeks capital appreciation through short sales of domestically traded equity securities.

FUND FEES AND EXPENSES

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 (fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Ranger Equity Bear ETF
MANAGEMENT FEES		1.50%
DISTRIBUTION (12b-1) FEES		none
TOTAL OTHER EXPENSES		1.62%
Short Interest Expense		1.51%
Other Expenses		0.11%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.17%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	3.29%

EXAMPLE

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 Examplei 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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Ranger Equity Bear ETF	332	1,013	1,717	3,585

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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, 2013, the Fund's portfolio turnover rate was 697% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

Ranger Alternative Management, L.P. (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by short selling a portfolio of liquid mid- and large-cap U.S. exchange-traded equity securities, exchange-traded funds (“ETFs”) registered pursuant to the 1940 Act, exchange-traded notes (“ETNs”) and other exchange-traded products (collectively, “ETPs”). The Sub-Advisor implements a bottom-up, fundamental, research driven security selection process that seeks to identify securities with low earnings quality or aggressive accounting that may tend to mask operational deterioration and bolster the reported earnings per share over a short time period. In addition to these issues, the Sub-Advisor seeks to identify earnings driven events that may act as a catalyst to the price decline of a security, such as downwards earnings revisions or reduced forward earnings outlook. On a day-to-day basis, the Fund may hold U.S. government securities, short-term high quality fixed income securities, money market instruments, overnight and fixed-term repurchase agreements, cash and cash equivalents with maturities of one year or less for investment purposes and to cover its short positions.

In addition to extensive quantitative analysis, careful consideration is given to qualitative analysis. The assessment of the management team, accounting practices, corporate governance and the company's competitive advantage are all key items. Once these quantitative and qualitative characteristics are thoroughly analyzed, the Sub-Advisor then determines if there is sufficient return to the stock price to warrant an investment. Once a position is included in the Fund's portfolio, it is subject to regular fundamental and technical risk management review. This continual review process seeks to identify problem positions early and enhances performance by removing them before they become significant issues for the portfolio.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities in which the Fund holds short 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 Vehicle Risk. The Fund may invest in (or short) ETPs. Through its positions in ETPs, the Fund will be subject to the risks associated with such vehicles, 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 asset 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. In addition, certain of the ETPs may hold, or have exposure to, common portfolio positions, thereby reducing any diversification benefits.

Exchange-Traded Note (ETN) 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.

Fixed Income Risk. The Fund may be exposed to fixed income risk through its short positions in ETPs that primarily invest in, or have exposure to, fixed income securities. The value of an ETP's portfolio of fixed income securities, or an ETN's reference asset, will change in response to interest rate changes and other factors, such as the perception of the issuers' creditworthiness. During periods of falling interest rates, the value of outstanding fixed income securities generally rise. Conversely, during periods of rising interest rates, the value of fixed income securities generally decline.

Issuer Risk. From time to time the Fund may have exposure via its short positions to a limited number of issuers. During such times, the Fund is more susceptible to the risk that an issuer's securities may appreciate in value.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Mid-Capitalization and Large-Capitalization Risk. The Fund is subject to the risk that medium and large-cap stocks may outperform other segments of the equity market or the equity market as a whole.

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

Premium-Discount Risk. The Fund's shares 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.

Short Sales Risk. Short sales are transactions in which the Fund sells a security it does not own. To complete the transaction, the Fund must borrow the security to make delivery to the buyer. The Fund is then obligated to replace the security borrowed by purchasing the security at the market price at the time of replacement. The price at such time may be higher or lower than the price at which the security was sold by the Fund. If the underlying security goes down in price between the time the Fund sells the security and buys it back, the Fund will realize a gain on the transaction. Conversely, if the underlying security goes up in price during the period, the Fund will realize a loss on the transaction. Any such loss is increased by the amount of premium or interest the Fund must pay to the lender of the security. Likewise, any gain will be decreased by the amount of premium or interest the Fund must pay to the lender of the security. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. Short sales involve leverage because the Fund borrows securities and then sells them, effectively leveraging its assets. The use of leverage may magnify gains or losses for the Fund.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

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 S&P 500 Index, which is a broad-based, unmanaged measurement of changes in stock market conditions based on the average of 500 widely held common stocks. 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.

RETURN

The Fund's year-to-date total return as of September 30, 2013 was -21.62%.

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

	Return	Quarter/Year
Highest Return	13.20%	2Q/2012
Lowest Return	-17.56%	1Q/2012

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

Average Annual Total Returns	Label		1 Year	Since Inception	Inception Date
AdvisorShares Ranger Equity Bear ETF	Return Before Taxes Based on NAV		(26.72%)	(14.89%)	Jan. 26, 2011
AdvisorShares Ranger Equity Bear ETF After Taxes on Distributions	Return After Taxes on Distributions	[1]	(26.72%)	(14.89%)	Jan. 26, 2011
AdvisorShares Ranger Equity Bear ETF After Taxes on Distributions and Sales	Return After Taxes on Distributions and Sale of Fund Shares	[1]	(17.37%)	(12.50%)	Jan. 26, 2011
AdvisorShares Ranger Equity Bear ETF S&P 500 Index	S&P 500 Index (Reflects no deduction for fees, expenses, or taxes)		16.00%	11.35%	Jan. 26, 2011

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including ETNs and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[1] 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-deferred 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.

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Label

Element

Value

Risk/Return:

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Entity Central Index Key

dei_EntityCentralIndexKey

0001408970

AdvisorShares QAM Equity Hedge ETF (Prospectus Summary) | AdvisorShares QAM Equity Hedge ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

QAM EQUITY HEDGE ETF (NYSE Arca Ticker: QEH)

Objective [Heading]

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INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The QAM Equity Hedge ETF (the “Fund”) seeks investment results that exceed the risk adjusted performance of approximately 50% of the long/short equity hedge fund universe as defined by the HFRI Equity Hedge (Total) Index constituents.

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 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. This rate excludes the value of portfolio securities received or delivered as a result of in-kind creations or redemptions of the Fund's capital shares. For the period from August 7, 2012, the Fund's commencement of operations, through the most recent fiscal year ended June 30, 2013, the Fund's portfolio turnover rate was 114% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

114.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include Acquired Fund Fees and Expenses.

Expense Example [Heading]

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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 is a ‘‘fund of funds'' that seeks to achieve its investment objective by investing primarily in both long and short positions in other exchange-traded funds (“ETFs'') and exchange-traded notes (“ETNs”) that offer diversified exposure to global regions, countries, investment styles (i.e., value, growth), sectors and industries. Commerce Asset Management, LLC (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by taking long and short positions in ETFs and ETNs that the Sub-Advisor believes, in the aggregate, will track the performance of a selected universe of long/short equity hedge funds.

Long/short equity hedge funds typically buy stocks, ETFs, ETNs or currencies that the hedge fund managers expect will appreciate, and concurrently either sell short stocks, ETFs, ETNs or currencies that the hedge fund managers expect will decline in value or to hedge market or sector exposures.

In seeking to establish a long or short position in such instruments, the Fund may use swaps based on published indices, including international indices. The Fund also may invest in exchange-traded currency trusts (collectively, with ETFs and ETNs, (“ETPs”)). 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 to collateralize its derivative positions.

Risk [Heading]

rr_RiskHeading

PRINCIPAL RISKS OF INVESTING IN THE FUND

Risk Narrative [Text Block]

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The Fund is subject to a number of risks that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETPs and the allocation of assets among such ETPs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

Counterparty Credit Risk. The Fund may invest in financial instruments involving counterparties that attempt to gain exposure to a particular group of securities, index or asset class without actually purchasing those securities or investments, or to hedge a position. The Fund's use of such financial instruments, including swap agreements, exposes the Fund to risks that are different than those associated with direct investments in portfolio securities. For example, if a swap agreement counterparty defaults on its payment obligations to the Fund, this default will cause the value of your investment in the Fund to decrease. Swap agreements also may be considered to be illiquid.

Credit Risk. The Fund could lose money if the issuer or guarantor of a debt instrument in which the Fund invests becomes unwilling or unable to make timely principal and/or interest payments, or to otherwise meet its obligations.

Derivatives Risk. The Fund intends to invest in derivatives to a significant extent. Derivatives may be riskier than other types of investments because they may be more sensitive to changes in economic or market conditions than other types of investments and could result in losses that significantly exceed the Fund's original investment. A derivative is a financial contract the value of which depends on, or is derived from, the value of a financial asset (such as stock, bond or currency), a physical asset (such as gold) or a market index (such as the S&P 500 Index). Many derivatives (including option contracts) create leverage thereby causing the Fund to be more volatile than it would be if it had not invested in derivatives. Derivatives also expose the Fund to counterparty risk (the risk that the derivative counterparty will not fulfill its contractual obligations) and to credit risk.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities in which the Fund invests rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

ETN 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.

Investment Risk. As with all investments, an investment in the Fund is subject to investment risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or even long periods of time.

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.

Market Risk. Due to market conditions, the value of the Fund's investments may fluctuate significantly from day to day. 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 lower Fund performance.

Premium-Discount Risk. The Fund's shares 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.

Short Sales Risk. Short sales are transactions in which the Fund sells a security it does not own. To complete the transaction, the Fund must borrow the security to make delivery to the buyer. The Fund is then obligated to replace the security borrowed by purchasing the security at the market price at the time of replacement. The price at such time may be higher or lower than the price at which the security was sold by the Fund. If the underlying security goes down in price between the time the Fund sells the security and buys it back, the Fund will realize a gain on the transaction. Conversely, if the underlying security goes up in price during the period, the Fund will realize a loss on the transaction. Any such loss is increased by the amount of premium or interest the Fund must pay to the lender of the security. Likewise, any gain will be decreased by the amount of premium or interest the Fund must pay to the lender of the security. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. Short sales involve leverage because the Fund borrows securities and then sells them, effectively leveraging its assets. The use of leverage may magnify gains or losses for the Fund.

Tax Risk. In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in ETPs, the Fund will be subject to the risks associated with such investment vehicles' investments, or reference assets in the case of ETNs, including the possibility that the value of the securities or instruments held or tracked by an ETP could decrease. These risks include any combination of the risks described below, as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the ETPs and their exposure to various security types, currencies, market sectors, and geographic regions.

·Commodity Risk. Because certain ETPs may have a significant portion of their assets exposed directly or indirectly to commodities or commodity-linked securities, developments affecting commodities may have a disproportionate impact on such ETPs. An ETP's investment in commodities or commodity-linked derivative instruments may subject the ETP (and indirectly the Fund) to greater volatility than investments in traditional securities, particularly if the instruments involve leverage. The value of commodities and commodity-linked derivative instruments may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments.

·Concentration Risk. An ETP may, at various times, concentrate in the securities or commodities of a particular industry, group of industries, market sector or geographic region. To the extent an ETP's investments are so concentrated, the Fund may be adversely affected by political, regulatory, and market conditions affecting the particular industry, group of industries, market sector or geographic region.

·Counterparty Risk. Commodity-linked derivatives, repurchase agreements, swap agreements and other forms of financial instruments that involve counterparties subject an ETP to the risk that the counterparty could default on its obligations under the agreement, either through the counterparty's bankruptcy or failure to perform its obligations.

·Credit Risk. Certain ETPs are subject to the risk that a decline in the credit quality of a portfolio investment or a counterparty to a portfolio investment could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

·Emerging Markets Risk. There is an increased risk of price volatility associated with an ETP's investments in, or exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

·Equity Risk. The prices of equity securities in which an ETP invests or is exposed to rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

·Foreign Currency Risk. Currency movements may negatively impact the value of an ETP portfolio security even when there is no change in the value of the security in the issuer's home country. Certain ETPs may not hedge against the risk of currency exchange rate fluctuations, while other ETPs may if there is volatility in currency exchange rates.

·Foreign Securities Risk. An ETP's investments in, or exposure to, foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

·Investment Risk. The Fund may experience losses with respect to its investment in an ETP. Further, there is no guarantee that an ETP will achieve its objective.

·Large-Cap Risk. An ETP may invest in large-capitalization companies. Returns on investments in stocks of large U.S. companies could trail the returns on investments in stocks of small- and mid- cap companies or the market as a whole.

·Mid-Cap Risk. An ETP may invest in mid-capitalization companies. Mid-cap companies may be more volatile and more likely than large-cap companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid- cap companies could trail the returns on investments in stocks of large- or small-cap companies or the market as a whole.

·Small-Cap Risk. An ETP may invest in small-capitalization companies. Small-cap companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. In particular, small-cap companies may have limited product lines, markets, and financial resources and may be dependent upon a relatively small management group. These securities may be listed on an exchange or trade over-the-counter, and may or may not pay dividends. During a period when the performance of small-cap stocks falls behind that of other types of investments, such as large-cap stocks, the ETP's performance could be adversely affected.

· Tracking Error Risk. Tracking error can arise due to factors such as the effect of transaction fees and expenses incurred by an ETP, changes in composition of the ETP's benchmark, and the ability of the ETP manager or sponsor to successfully implement his or her investment strategy.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

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As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Bar Chart and Performance Table [Heading]

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FUND PERFORMANCE

Performance Narrative [Text Block]

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A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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 One Year or Less [Text]

rr_PerformanceOneYearOrLess

A comparison of the Fund’s performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisorshares.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Of course, once the Fund has performance, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

AdvisorShares QAM Equity Hedge ETF (Prospectus Summary) | AdvisorShares QAM Equity Hedge ETF | AdvisorShares QAM Equity Hedge ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

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1.00%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

Short Interest Expense

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0.07%

Other Expenses

rr_Component2OtherExpensesOverAssets

3.54%

TOTAL OTHER EXPENSES

rr_OtherExpensesOverAssets

3.61%

ACQUIRED FUND FEES AND EXPENSES

rr_AcquiredFundFeesAndExpensesOverAssets

0.08%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

4.69%

^[2]

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

3.04%

^[3]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

1.65%

^[2]

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 168

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,141

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

2,120

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 4,594

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.50% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

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AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF (Prospectus Summary) | AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF

WCM / BNY MELLON FOCUSED GROWTH ADR ETF (NYSE Arca Ticker: AADR)

INVESTMENT OBJECTIVE 

The WCM/BNY Mellon Focused Growth ADR ETF (the “Fund”) seeks long-term capital appreciation above international benchmarks such as the BNY Mellon Classic ADR Index, the Fund's primary benchmark, and the MSCI EAFE Index, the Fund's secondary benchmark.

FUND FEES AND EXPENSES

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 (fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF
MANAGEMENT FEES		0.75%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		1.77%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.01%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	2.53%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[3]	1.27%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[2]	1.26%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF	128	665	1,229	2,766

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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, 2013, the Fund's portfolio turnover rate was 38% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES 

WCM Investment Management (the “Sub-Advisor”), the sub-advisor to the Fund, seeks to achieve the Fund's investment objective by selecting primarily a portfolio of U.S.-traded securities of non-U.S. organizations, most often American Depositary Receipts (“ADRs”), included in the BNY Mellon Classic ADR Index. The Fund's investment focus follows the Sub-Advisor's core philosophy of investing in industry-leading non-U.S. organizations led by visionary management teams with sound business strategies. The Sub-Advisor believes that these companies often dominate their industry and are likely to continue that domination well into the future. The Sub-Advisor establishes guidelines for sector and industry emphasis and develops the portfolio of the Fund. The Sub-Advisor analyzes the major trends in the global economy in order to identify those economic sectors and industries that are most likely to benefit. Typical themes incorporated in their investment process include demographics, global commerce, outsourcing, the growing global middle class and the proliferation of technology. A portfolio strategy is then implemented that will best capitalize on these investment themes and subsequent expected growth of the underlying assets.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

American Depositary Receipt (ADR) 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 and changes in the exchange rates of foreign currencies. In addition, investments in ADRs may be less liquid than the underlying securities in their primary trading market.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Emerging Markets Risk. Certain of the Fund's investments will expose the Fund's portfolio to the risks of investing in emerging markets. Emerging markets, which consist of countries or markets with low to middle income economies as classified by the World Bank and other countries or markets with similar characteristics as determined by the Advisor, can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Foreign Currency Risk. The Fund's exposure to foreign currencies subjects the Fund to the risk that those currencies will decline in value relative to the U.S. dollar.

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.

Investment Risk. As with all investments, an investment in the Fund is subject to investment risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or even long periods of time.

Large-Capitalization Risk. The Fund may invest in large-capitalization companies. Large-capitalization securities tend to go in and out of favor based on market and economic conditions. During a period when the demand for large-capitalization securities is less than for other types of investments - small-capitalization securities, for instance - the Fund's performance could be reduced.

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.

Market Risk. Due to market conditions, the value of the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares may trade above or below their NAV. The trading price of the Fund's shares may deviate significantly from their NAV during periods of market volatility.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

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 EAFE Index, which is an unmanaged free float-adjusted market capitalization index that is designed to measure the equity market performance of developed markets, excluding the U.S. and Canada. 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.

The Fund's year-to-date total return as of September 30, 2013 was 13.74%.

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

	Return	Quarter/Year
Highest Return	11.54%	1Q/2012
Lowest Return	-17.90%	3Q/2011

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

Average Annual Total Returns	Label		1 Year	Since Inception	Inception Date
AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF	Return Before Taxes Based on NAV		12.65%	10.10%	Jul. 20, 2010
AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF After Taxes on Distributions	Return After Taxes on Distributions	[1]	12.81%	10.14%	Jul. 20, 2010
AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF After Taxes on Distributions and Sales	Return After Taxes on Distributions and Sale of Fund Shares	[1]	8.51%	8.79%	Jul. 20, 2010
AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF MSCI EAFE Index	MSCI EAFE Index (Reflects no deduction for fees, expenses, or taxes)		17.32%	8.41%	Jul. 20, 2010

Updated performance information is available on the Fund's website at www.advisorshares.com.

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.25% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[1] 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-deferred 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.

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AdvisorShares Madrona Domestic ETF (Prospectus Summary) | AdvisorShares Madrona Domestic ETF

MADRONA DOMESTIC ETF (NYSE Arca Ticker: FWDD)

INVESTMENT OBJECTIVE

The Madrona Domestic ETF (the “Fund”) seeks to provide long-term capital appreciation above the capital appreciation of its benchmark, the S&P 500 Index.

FUND FEES AND EXPENSES

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 (fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Madrona Domestic ETF
MANAGEMENT FEES		0.80%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		0.81%
TOTAL ANNUAL FUND OPERATING EXPENSES		1.61%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[1]	0.36%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT		1.25%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Madrona Domestic ETF	128	474	843	1,883

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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 Fund 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, 2013, the Fund's portfolio turnover rate was 33% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

 Madrona Funds, LLC (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by selecting a portfolio of up to 500 of the largest U.S.-traded equity securities. The Sub-Advisor selects the securities for the Fund's portfolio using a weighted allocation system based on consensus analyst estimates of the present value of future expected earnings relative to the share price of each security. The Sub-Advisor's investment committee meets on a bi-weekly basis to monitor the portfolio and make allocation decisions. The investment committee uses third-party analyst research and a proprietary fundamental process to make allocation decisions and employs guidelines to protect against dramatic over or under weighting of individual securities in the Fund's portfolio. The investment committee relies heavily on a stock's price and market capitalization relative to its future expected earnings in its analysis of individual securities.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Early Closing Risk.  An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

Large-Capitalization Securities Risk. The Fund may invest in large-capitalization companies. Large-capitalization securities tend to go in and out of favor based on market and economic conditions. During a period when the demand for large-capitalization securities is less than for other types of investments - small-capitalization securities, for instance - the Fund's performance could be reduced.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

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 S&P 500 Index, which is a broad-based, unmanaged measurement of changes in stock market conditions based on the average of 500 widely held common stocks. 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.

The Fund's year-to-date total return as of September 30, 2013 was 25.88%.

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

	Return	Quarter/Year
Highest Return	14.83%	1Q/2012
Lowest Return	-6.08%	2Q/2012

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

Average Annual Total Returns	Label		1 Year	Since Inception	Inception Date
AdvisorShares Madrona Domestic ETF	Return Before Taxes Based on NAV		18.28%	7.27%	Jun. 20, 2011
AdvisorShares Madrona Domestic ETF After Taxes on Distributions	Return After Taxes on Distributions	[1]	18.19%	7.19%	Jun. 20, 2011
AdvisorShares Madrona Domestic ETF After Taxes on Distributions and Sales	Return After Taxes on Distributions and Sale of Fund Shares	[1]	11.99%	6.19%	Jun. 20, 2011
AdvisorShares Madrona Domestic ETF S&P 500 Index	S&P 500 Index (Reflects no deduction for fees, expenses, or taxes)		16.00%	9.85%	Jun. 20, 2011

[1] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses to keep the Fund's Total Annual Fund Operating 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 1.25% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[1] 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-deferred 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.

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Label

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Value

Risk/Return:

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Entity Central Index Key

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0001408970

AdvisorShares Accuvest Global Opportunities ETF (Prospectus Summary) | AdvisorShares Accuvest Global Opportunities ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

ACCUVEST GLOBAL OPPORTUNITIES ETF (NYSE Arca Ticker: ACCU)

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Accuvest Global Opportunities ETF (the “Fund”) seeks long-term capital appreciation in excess of global equity benchmarks such as the MSCI All Country World Index.

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 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. 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, 2013, the Fund's portfolio turnover rate was 100% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

100.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include Acquired Fund Fees and Expenses.

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]

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PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

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The Fund is a “fund of funds” that seeks to achieve its investment objective by investing primarily in other exchange-traded funds (the “Underlying ETFs”). Accuvest Global Advisors (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by investing in Underlying ETFs that provide diversified exposure to select economies around the world. The Sub-Advisor ranks countries on a monthly basis using its proprietary country ranking model in order to determine their relative attractiveness. The Sub-Advisor then endeavors to invest in Underlying ETFs, which may be both affiliated and unaffiliated with the Fund, that individually or in combination correspond generally to the price and yield performance of the specific countries (or regions) identified as most attractive by the model. The Sub-Advisor believes that attractive returns can only be achieved by actively structuring portfolios distinct from simply tracking market indices. As a result, the Fund's portfolio will be invested only in countries with the highest rankings as identified by the Sub-Advisor's proprietary country ranking process.

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 that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of the Underlying ETFs and the allocation of assets among the Underlying ETFs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Investment Risk. As with all investments, an investment in the Fund is subject to investment risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or even long periods of time.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. 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 lower Fund performance.

Premium-Discount Risk. The Fund's shares 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.

Tax Risk.In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

Underlying ETF Investment Risk. Through its investments in the Underlying ETFs, the Fund will be subject to the risks associated with the Underlying ETFs' investments, including the possibility that the value of the securities held by an Underlying ETF could decrease. These risks include any combination of the risks described below, as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the Underlying ETFs and the Underlying ETFs' exposure to various security types, currencies, market sectors, and geographic regions.

Emerging Markets Risk. There is an increased risk of price volatility associated with an Underlying ETF's investments in, or exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Equity Risk. The prices of equity securities in which an Underlying ETF invests, or is exposed to, rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

Fixed Income Risk. An Underlying ETF's investments in fixed income securities are subject to the risk that the securities may be paid off earlier or later than expected. Either situation could cause the Underlying ETF to hold securities paying lower-than-market rates of interest, which could hurt the Fund's yield or share price.

Foreign Currency Risk. Currency movements may negatively impact the value of an Underlying ETF security even when there is no change in the value of the security in the issuer's home country. Certain of the Underlying ETFs may not hedge against the risk of currency exchange rate fluctuations, while other Underlying ETFs may if there is volatility in currency exchange rates.

Foreign Securities Risk. An Underlying ETF's investments in, or exposure to, foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

Geographic Investment Risk . Each Underlying ETF invests a significant portion of its assets in the securities of issuers organized in one or more jurisdictions around the world, or in securities or instruments that provide exposure to such issuers. As such, each Underlying ETF is likely to be impacted by economic conditions or events affecting the particular market or markets reflected by its name. As of the date of this Prospectus, the Fund is expected to have significant exposure to the regions listed below. The Sub-Advisor anticipates, however, that the Fund's exposure to particular regions and countries will vary greatly and may change frequently.

ASIA. To the extent an Underlying ETF has significant investment exposure to Asia, the Underlying ETF will be susceptible to loss due to adverse market, political, regulatory, and geographic events affecting that region. While certain Asian economies are exemplars of growth and development others have been and continue to be subject, to some extent, to over-extension of credit, currency devaluations and restrictions, high unemployment, high inflation, decreased exports and economic recessions.

EASTERN EUROPE. An Underlying ETF may have significant exposure to companies located in Eastern Europe. Because of this, companies in the Underlying ETF's portfolio may react similarly to political, social, and economic developments in any of the Eastern European countries.

EUROPE. Developed and emerging market countries in Europe will be significantly affected by the fiscal and monetary controls of the European Monetary Union. Changes in regulations on trade, decreasing imports or exports, changes in the exchange rate of the euro and recessions among European countries may have a significant adverse effect on the economies of other European countries.

PACIFIC REGION. Many of the Pacific region economies can be exposed to high inflation rates, undeveloped financial services sectors, and heavy reliance on international trade. The region's economies are also dependent on the economies of Asia, Europe and the United States and, in particular, on the price and demand for agricultural products and natural resources.

NORTH AMERICA. The United States is Canada's largest trading and investment partner and the Canadian economy is significantly affected by developments in the United States economy. The United States is also a significant trading partner of many emerging markets in which the Underlying ETFs invest. Decreasing United States imports, new trade regulations, changes in the U.S. dollar exchange rates or a recession in the United States may have an adverse impact on these markets.

Investment Risk. Similar to an investment in the Fund, an investment in an Underlying ETF is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may experience losses with respect to its investment in an Underlying ETF. Further, there is no guarantee that an Underlying ETF will achieve its investment objective.

Large-Capitalization Risk. An Underlying ETF may invest in large-capitalization companies. Returns on investments in stocks of large U.S. companies could trail the returns on investments in stocks of small- and mid-capitalization companies or the market as a whole.

Mid-Capitalization Risk. An Underlying ETF may invest in mid-capitalization companies. Mid-cap companies may be more volatile and more likely than large-cap companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid-cap companies could trail the returns on investments in stocks of large- or small-cap companies or the market as a whole.

Small-Capitalization Risk. An Underlying ETF may invest in small-capitalization companies. Small-cap companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. In particular, small-cap companies may have limited product lines, markets, and financial resources and may be dependent upon a relatively small management group. These securities may be listed on an exchange or trade over-the-counter, and may or may not pay dividends. During a period when the performance of small-cap stocks falls behind that of other types of investments, such as large-cap stocks, the Underlying ETF's performance could be adversely affected.

Tracking Error Risk. Tracking error can arise due to factors such as the effect of transaction fees and expenses incurred by an Underlying ETF, changes in composition of an Underlying ETF's benchmark, and the ability of the Underlying ETF manager or sponsor to successfully implement his or her investment strategy.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

Similar to an investment in the Fund, an investment in an Underlying ETF is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

FUND PERFORMANCE

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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 One Year or Less [Text]

rr_PerformanceOneYearOrLess

the Fund is new and, therefore, does not have a performance history for a full calendar year.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.advisorshares.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Of course, once the Fund has performance, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

AdvisorShares Accuvest Global Opportunities ETF (Prospectus Summary) | AdvisorShares Accuvest Global Opportunities ETF | AdvisorShares Accuvest Global Opportunities ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

0.95%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

0.59%

ACQUIRED FUND FEES AND EXPENSES

rr_AcquiredFundFeesAndExpensesOverAssets

0.56%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

2.10%

^[2]

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

0.29%

^[3]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

1.81%

^[2]

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 184

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

631

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,104

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 2,412

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products that are not investment companies in which the Fund invests, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.25% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Entity Central Index Key

dei_EntityCentralIndexKey

0001408970

AdvisorShares Ranger Equity Bear ETF (Prospectus Summary) | AdvisorShares Ranger Equity Bear ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

RANGER EQUITY BEAR ETF (NYSE Arca Ticker: HDGE)

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Ranger Equity Bear ETF (the “Fund”) seeks capital appreciation through short sales of domestically traded equity securities.

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 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. 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, 2013, the Fund's portfolio turnover rate was 697% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

697.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include Acquired Fund Fees and Expenses.

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 Examplei 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

Ranger Alternative Management, L.P. (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by short selling a portfolio of liquid mid- and large-cap U.S. exchange-traded equity securities, exchange-traded funds (“ETFs”) registered pursuant to the 1940 Act, exchange-traded notes (“ETNs”) and other exchange-traded products (collectively, “ETPs”). The Sub-Advisor implements a bottom-up, fundamental, research driven security selection process that seeks to identify securities with low earnings quality or aggressive accounting that may tend to mask operational deterioration and bolster the reported earnings per share over a short time period. In addition to these issues, the Sub-Advisor seeks to identify earnings driven events that may act as a catalyst to the price decline of a security, such as downwards earnings revisions or reduced forward earnings outlook. On a day-to-day basis, the Fund may hold U.S. government securities, short-term high quality fixed income securities, money market instruments, overnight and fixed-term repurchase agreements, cash and cash equivalents with maturities of one year or less for investment purposes and to cover its short positions.

In addition to extensive quantitative analysis, careful consideration is given to qualitative analysis. The assessment of the management team, accounting practices, corporate governance and the company's competitive advantage are all key items. Once these quantitative and qualitative characteristics are thoroughly analyzed, the Sub-Advisor then determines if there is sufficient return to the stock price to warrant an investment. Once a position is included in the Fund's portfolio, it is subject to regular fundamental and technical risk management review. This continual review process seeks to identify problem positions early and enhances performance by removing them before they become significant issues for the portfolio.

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 that may affect the value of its shares, including:

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Equity Risk. The prices of equity securities in which the Fund holds short 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 Vehicle Risk. The Fund may invest in (or short) ETPs. Through its positions in ETPs, the Fund will be subject to the risks associated with such vehicles, 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 asset 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. In addition, certain of the ETPs may hold, or have exposure to, common portfolio positions, thereby reducing any diversification benefits.

Exchange-Traded Note (ETN) 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.

Fixed Income Risk. The Fund may be exposed to fixed income risk through its short positions in ETPs that primarily invest in, or have exposure to, fixed income securities. The value of an ETP's portfolio of fixed income securities, or an ETN's reference asset, will change in response to interest rate changes and other factors, such as the perception of the issuers' creditworthiness. During periods of falling interest rates, the value of outstanding fixed income securities generally rise. Conversely, during periods of rising interest rates, the value of fixed income securities generally decline.

Issuer Risk. From time to time the Fund may have exposure via its short positions to a limited number of issuers. During such times, the Fund is more susceptible to the risk that an issuer's securities may appreciate in value.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Mid-Capitalization and Large-Capitalization Risk. The Fund is subject to the risk that medium and large-cap stocks may outperform other segments of the equity market or the equity market as a whole.

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

Premium-Discount Risk. The Fund's shares 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.

Short Sales Risk. Short sales are transactions in which the Fund sells a security it does not own. To complete the transaction, the Fund must borrow the security to make delivery to the buyer. The Fund is then obligated to replace the security borrowed by purchasing the security at the market price at the time of replacement. The price at such time may be higher or lower than the price at which the security was sold by the Fund. If the underlying security goes down in price between the time the Fund sells the security and buys it back, the Fund will realize a gain on the transaction. Conversely, if the underlying security goes up in price during the period, the Fund will realize a loss on the transaction. Any such loss is increased by the amount of premium or interest the Fund must pay to the lender of the security. Likewise, any gain will be decreased by the amount of premium or interest the Fund must pay to the lender of the security. Because a short position loses value as the security's price increases, the loss on a short sale is theoretically unlimited. Short sales involve leverage because the Fund borrows securities and then sells them, effectively leveraging its assets. The use of leverage may magnify gains or losses for the Fund.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

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 S&P 500 Index, which is a broad-based, unmanaged measurement of changes in stock market conditions based on the average of 500 widely held common stocks. 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 Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

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.

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.

Bar Chart [Heading]

rr_BarChartHeading

RETURN

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund's year-to-date total return as of September 30, 2013 was -21.62%.

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

	Return	Quarter/Year
Highest Return	13.20%	2Q/2012
Lowest Return	-17.56%	1Q/2012

Performance Table Heading

rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

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

rr_IndexNoDeductionForFeesExpensesTaxes

Reflects no deduction for fees, expenses, or taxes

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-deferred 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 Ranger Equity Bear ETF (Prospectus Summary) | AdvisorShares Ranger Equity Bear ETF | S&P 500 Index

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500 Index (Reflects no deduction for fees, expenses, or taxes)

1 Year

rr_AverageAnnualReturnYear01

16.00%

Since Inception

rr_AverageAnnualReturnSinceInception

11.35%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 26, 2011

AdvisorShares Ranger Equity Bear ETF (Prospectus Summary) | AdvisorShares Ranger Equity Bear ETF | AdvisorShares Ranger Equity Bear ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

1.50%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

Short Interest Expense

rr_Component1OtherExpensesOverAssets

1.51%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.11%

TOTAL OTHER EXPENSES

rr_OtherExpensesOverAssets

1.62%

ACQUIRED FUND FEES AND EXPENSES

rr_AcquiredFundFeesAndExpensesOverAssets

0.17%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

3.29%

^[2]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 332

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

1,013

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,717

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 3,585

Annual Return 2012

rr_AnnualReturn2012

(26.72%)

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(21.62%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.20%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2012

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(17.56%)

Label

rr_AverageAnnualReturnLabel

Return Before Taxes Based on NAV

1 Year

rr_AverageAnnualReturnYear01

(26.72%)

Since Inception

rr_AverageAnnualReturnSinceInception

(14.89%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 26, 2011

AdvisorShares Ranger Equity Bear ETF (Prospectus Summary) | AdvisorShares Ranger Equity Bear ETF | AdvisorShares Ranger Equity Bear ETF | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

^[3]

1 Year

rr_AverageAnnualReturnYear01

(26.72%)

Since Inception

rr_AverageAnnualReturnSinceInception

(14.89%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 26, 2011

AdvisorShares Ranger Equity Bear ETF (Prospectus Summary) | AdvisorShares Ranger Equity Bear ETF | AdvisorShares Ranger Equity Bear ETF | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

^[3]

1 Year

rr_AverageAnnualReturnYear01

(17.37%)

Since Inception

rr_AverageAnnualReturnSinceInception

(12.50%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Jan. 26, 2011

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including ETNs and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] 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-deferred 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.

XML

AdvisorShares Madrona International ETF (Prospectus Summary) | AdvisorShares Madrona International ETF

MADRONA INTERNATIONAL ETF (NYSE Arca Ticker: FWDI)

INVESTMENT OBJECTIVE

The Madrona International ETF (the “Fund”) seeks to provide long-term capital appreciation above the capital appreciation of its international benchmarks, such as the MSCI EAFE Index, the Fund's primary benchmark, and the BNY Mellon Classic ADR Index, the Fund's secondary benchmark.

FUND FEES AND EXPENSES

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 (fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Madrona International ETF
MANAGEMENT FEES		0.80%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		0.85%
TOTAL ANNUAL FUND OPERATING EXPENSES		1.65%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[1]	0.40%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT		1.25%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Madrona International ETF	128	482	861	1,924

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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 Fund 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, 2013, the Fund's portfolio turnover rate was 93% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

Madrona Funds, LLC (the “Sub-Advisor”) seeks to achieve the Fund's investment objective by selecting a portfolio primarily composed of American Depository Receipts (“ADRs”) from among the largest issuers of Europe, Australasia and the Far East (“EAFE”) and Canada. The Fund's portfolio may also include U.S.-traded securities of large-capitalization non-U.S. issuers that provide exposure to certain markets deemed to be emerging markets. Securities are selected, weighted and sold based upon the Sub-Advisor's proprietary investment process. The Sub-Advisor's investment committee meets on a bi-weekly basis to monitor the portfolio and make allocation decisions. The investment committee uses third-party analyst research and a proprietary fundamental process to make allocation decisions.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

American Depositary Receipt (ADR) 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 and changes in the exchange rates of foreign currencies. In addition, investments in ADRs may be less liquid than the underlying securities in their primary trading market.

Currency Risk. As a result of the Fund's investments in securities receiving revenues in, foreign currencies, the Fund will be subject to currency risk. This is the risk that currencies to which the Fund is exposed will decline in value relative to the U.S. dollar, which may cause the dollar value of an investment in the Fund to be adversely affected.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

Emerging Markets Risk. Certain of the Fund's investments will expose the Fund's portfolio to the risks of investing in emerging markets. Emerging markets, which consist of countries or markets with low to middle income economies as classified by the World Bank and other countries or markets with similar characteristics as determined by the Advisor, can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

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.

Geographic Concentration Risk. To the extent that the Fund's investments are concentrated in a particular country or region, the Fund will be susceptible to loss due to adverse market, political, regulatory, and geographic events affecting that country or region. The Fund has concentrated investment exposure to the countries and regions listed below.

Asia. While certain Asian economies are exemplars of growth and development others have been and continue to be subject, to some extent, to over-extension of credit, currency devaluations and restrictions, high unemployment, high inflation, decreased exports and economic recessions.

Canada. The Canadian economy is susceptible to adverse changes in certain commodities markets, including those related to the agricultural and mining industries. It is also heavily dependent on trading with key partners. Any reduction in this trading may adversely affect the Canadian economy.

Europe. The European economy is diverse and includes both large, competitive economies and small, struggling economies. The European economy is vulnerable to decreasing imports or exports, changes in governmental regulations on trade, changes in the exchange rate of the euro and recessions in EU economies.

United States . The United States is a significant trading partner of many emerging markets in which the Fund invests. The United States economy has traditionally been considered to be one of the most stable and productive economies in the world. However, the recent financial crisis, declining United States imports, new trade regulations, changes in exchange rates, and increasing public debt pose concerns for many of the United States' trading partners that depend on its historically high levels of consumer spending and foreign investment.

Large-Cap Risk. Large-cap stocks tend to go in and out of favor based on market and economic conditions. During a period when the demand for large-cap stocks is less than for other types of investments - small-cap stocks, for instance - the Fund's performance could be reduced.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Premium-Discount Risk. The Fund's shares 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.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

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 EAFE Index, which is a unmanaged free float-adjusted market capitalization index that is designed to measure the equity market performance of developed markets, excluding the United States and Canada. 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.

The Fund's year-to-date total return as of September 30, 2013 was 12.78%.

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

	Return	Quarter/Year
Highest Return	14.39%	1Q/2012
Lowest Return	-9.26%	2Q/2012

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

Average Annual Total Returns	Label		1 Year	Since Inception	Inception Date
AdvisorShares Madrona International ETF	Return Before Taxes Based on NAV		19.87%	(1.45%)	Jun. 20, 2011
AdvisorShares Madrona International ETF After Taxes on Distributions	Return After Taxes on Distributions	[1]	19.59%	(1.66%)	Jun. 20, 2011
AdvisorShares Madrona International ETF After Taxes on Distributions and Sales	Return After Taxes on Distributions and Sale of Fund Shares	[1]	13.15%	(1.28%)	Jun. 20, 2011
AdvisorShares Madrona International ETF MSCI EAFE Index	MSCI EAFE Index (Reflects no deduction for fees, expenses, or taxes)		17.32%	1.54%	Jun. 20, 2011

[1] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses to keep the Fund's Total Annual Fund Operating 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 1.25% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[1] 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-deferred 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.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Oct. 28, 2013
Entity Registrant Name	dei_EntityRegistrantName	AdvisorShares Trust
Entity Central Index Key	dei_EntityCentralIndexKey	0001408970
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Oct. 28, 2013
Document Effective Date	dei_DocumentEffectiveDate	Oct. 28, 2013
Prospectus Date	rr_ProspectusDate	Oct. 28, 2013
Trading Symbol	dei_TradingSymbol	RRGR
AdvisorShares Accuvest Global Long Short ETF (Prospectus Summary) | AdvisorShares Accuvest Global Long Short ETF | AdvisorShares Accuvest Global Long Short ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	AGLS
AdvisorShares Accuvest Global Opportunities ETF (Prospectus Summary) | AdvisorShares Accuvest Global Opportunities ETF | AdvisorShares Accuvest Global Opportunities ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	ACCU
AdvisorShares Cambria Global Tactical ETF (Prospectus Summary) | AdvisorShares Cambria Global Tactical ETF | AdvisorShares Cambria Global Tactical ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	GTAA
AdvisorShares Global Echo ETF (Prospectus Summary) | AdvisorShares Global Echo ETF | AdvisorShares Global Echo ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	GIVE
AdvisorShares Madrona Domestic ETF (Prospectus Summary) | AdvisorShares Madrona Domestic ETF | AdvisorShares Madrona Domestic ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	FWDD
AdvisorShares Madrona International ETF (Prospectus Summary) | AdvisorShares Madrona International ETF | AdvisorShares Madrona International ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	FWDI
AdvisorShares Madrona Global Bond ETF (Prospectus Summary) | AdvisorShares Madrona Global Bond ETF | AdvisorShares Madrona Global Bond ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	FWDB
AdvisorShares Meidell Tactical Advantage ETF (Prospectus Summary) | AdvisorShares Meidell Tactical Advantage ETF | AdvisorShares Meidell Tactical Advantage ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MATH
AdvisorShares Newfleet Multi-Sector Income ETF (Prospectus Summary) | AdvisorShares Newfleet Multi-Sector Income ETF | AdvisorShares Newfleet Multi-Sector Income ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	MINC
AdvisorShares Peritus High Yield ETF (Prospectus Summary) | AdvisorShares Peritus High Yield ETF | AdvisorShares Peritus High Yield ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HYLD
AdvisorShares Pring Turner Business Cycle ETF (Prospectus Summary) | AdvisorShares Pring Turner Business Cycle ETF | AdvisorShares Pring Turner Business Cycle ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	DBIZ
AdvisorShares QAM Equity Hedge ETF (Prospectus Summary) | AdvisorShares QAM Equity Hedge ETF | AdvisorShares QAM Equity Hedge ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	QEH
AdvisorShares Ranger Equity Bear ETF (Prospectus Summary) | AdvisorShares Ranger Equity Bear ETF | AdvisorShares Ranger Equity Bear ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	HDGE
AdvisorShares STAR Global Buy-Write ETF (Prospectus Summary) | AdvisorShares STAR Global Buy-Write ETF | AdvisorShares STAR Global Buy-Write ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	VEGA
AdvisorShares TrimTabs Float Shrink ETF (Prospectus Summary) | AdvisorShares TrimTabs Float Shrink ETF | AdvisorShares TrimTabs Float Shrink ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	TTFS
AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF (Prospectus Summary) | AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF | AdvisorShares WCM/BNY Mellon Focused Growth ADR ETF
Risk/Return:	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	AADR

XML

AdvisorShares STAR Global Buy-Write ETF (Prospectus Summary) | AdvisorShares STAR Global Buy-Write ETF

STAR Global Buy-Write ETF (NYSE Arca Ticker: VEGA)

INVESTMENT OBJECTIVE

The STAR Global Buy-Write ETF (the “Fund”) seeks consistent repeatable returns across all market cycles.

FUND FEES AND EXPENSES

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(fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares STAR Global Buy-Write ETF
MANAGEMENT FEES		1.35%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		1.00%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.25%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	2.60%
FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[3]	0.50%
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT	[2]	2.10%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares STAR Global Buy-Write ETF	213	760	1,335	2,895

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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. For the period from September 17, 2012, the Fund's commencement of operations, through the most recent fiscal year ended June 30, 2013, the Fund's portfolio turnover rate was 40% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund is a “fund of funds” and intends to invest primarily in exchange-traded funds (“ETFs”) and exchange-traded notes (“ETNs”) that seek to track a diversified basket of global indices and investment sectors that meet certain selection criteria established by Partnervest Advisory Services, LLC (the “Sub-Advisor”). The Fund also may invest, subject to the same selection criteria, in exchange-traded products that invest directly in commodities or currencies and that are registered only pursuant to the Securities Act of 1933, as amended, (collectively, with ETFs and ETNs, (“ETPs”)). The selection criteria include size, historical track record, diversification among indices, the correlation of an index to other indices and an ability to write covered call options on the particular ETP. An ETP may be disposed of if it no longer meets the selection criteria.

The Sub-Advisor seeks to achieve the Fund's investment objective by using a proprietary overwrite strategy known as Volatility Enhanced Global Appreciation (“VEGA”). VEGA uses the Fund's portfolio investments in ETPs in combination with call options on the Fund's portfolio investments to seek cumulative price appreciation from the portfolio's global exposure while generating an additional return stream from the sale of covered call and/or cash-secured put options. A covered call option involves holding a long position in a particular asset, in this case shares of an ETP, and writing a call option on that same asset with the goal of realizing additional income from the option premium. A put option is a contract that gives the writer of the option the right to sell a specified amount of the asset underlying the option at a specified price (the “strike price”) within a specified time. When a put option is exercised or assigned, the writer of the option is obligated to purchase the requisite amount of the asset underlying the option to complete the sale. A put option is considered cash-secured when the writer of the put option segregates an amount of cash or cash equivalents sufficient to cover the purchase price of the asset underlying the option. To the extent cash and cash equivalents in the Fund's portfolio serve as collateral for cash-secured put options, such cash and cash equivalents may not be invested in ETPs, additional options or other similar investments in pursuit of the Fund's investment objective.Rather, on a day-to-day basis, such collateral may be invested in U.S. government securities, short-term, high quality fixed income securities, money market instruments, cash, and other cash equivalents with maturities of one year or less, or ETFs that hold such investments.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETPs and the allocation of assets among such ETPs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

Derivatives Risk. The Fund intends to invest in derivatives to a significant extent. Derivatives may be riskier than other types of investments because they may be more sensitive to changes in economic or market conditions than other types of investments and could result in losses that significantly exceed the Fund's original investment. A derivative is a financial contract the value of which depends on, or is derived from, the value of a financial asset (such as stock, bond or currency), a physical asset (such as gold) or a market index (such as the S&P 500 Index). Many derivatives (including option contracts) create leverage thereby causing the Fund to be more volatile than it would be if it had not invested in derivatives. Derivatives also expose the Fund to counterparty risk (the risk that the derivative counterparty will not fulfill its contractual obligations) and to credit risk.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

ETN 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.

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.

Market Risk. Due to market conditions, the value of the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Options Risk. Writing and purchasing call and put options are highly specialized activities and entail greater than ordinary investment risks. The value of the Fund's positions in options fluctuates in response to changes in the value of the underlying security. The Fund also risks losing all or part of the cash paid for purchasing call and put options. Fund assets covering written options cannot be sold while the option is outstanding, unless replaced with similar assets. As a result, there is a possibility that segregation of a large percentage of the Fund's assets could affect its portfolio management as well as the ability of the Fund to meet other current obligations.

Premium-Discount Risk. The Fund's shares 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.

Tax Risk. In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”) the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in ETPs, the Fund will be subject to the risks associated with such investment vehicles' investments or reference assets in the case of ETNs, including the possibility that the value of the securities or instruments held or tracked by an ETP could decrease. These risks include any combination of the risks described below, as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the ETPs and their exposure to various security types, currencies, market sectors, and geographic regions.

·Commodity Risk. Because certain of the ETPs may have a significant portion of their assets exposed directly or indirectly to commodities or commodity-linked securities, developments affecting commodities may have a disproportionate impact on such ETPs. An ETP's investment in commodities or commodity-linked derivative  instruments may subject the ETP (and indirectly the Fund) to greater volatility than investments in traditional securities, particularly if the instruments involve leverage. The value of commodities and commodity-linked derivative instruments may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments.

·Concentration Risk.An ETP may, at various times, concentrate in the securities or commodities of a particular industry, group of industries, market sector or geographic region. To the extent an ETP's investments are so concentrated, the Fund may be adversely affected by political, regulatory, and market conditions affecting the particular   industry, group of industries, market sector or geographic region.

·Counterparty Risk. Commodity-linked derivatives, repurchase agreements, swap agreements and other forms of financial instruments that involve counterparties subject an ETP to the risk that the counterparty could default on its obligations under the agreement, either through the counterparty's bankruptcy or failure to perform its  obligations.

·Credit Risk. Certain of the ETPs are subject to the risk that a decline in the credit quality of a portfolio investment or a counterparty to a portfolio investment could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make  timely principal or interest payments or otherwise honor its obligations.

·Emerging Markets Risk. There is an increased risk of price volatility associated with an ETP's investments in, or exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

·Equity Risk.The prices of equity securities in which an ETP invests or is exposed to rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

·Foreign Currency Risk. Currency movements may negatively impact the value of an ETP portfolio security even when there is no change in the value of the security in the issuer's home country. Certain ETPs may not hedge against the risk of currency exchange rate fluctuations, while other ETPs may if there is volatility in currency   exchange rates.

·Foreign Securities Risk. An ETP's investments in, or exposure to, foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and   exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

·Investment Risk. The Fund may experience losses with respect to its investment in an ETP. Further, there is no guarantee that an ETP will achieve its objective.

·Large-Cap Risk. An ETP may invest in large-capitalization companies. Returns on investments in stocks of large U.S. companies could trail the returns on investments in stocks of small- and mid-cap companies or the market as a whole.

·Mid-Cap Risk. An ETP may invest in mid-capitalization companies. Mid-cap companies may be more volatile and more likely than large-cap companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid-cap companies could trail the returns on   investments in stocks of large- or small-cap companies or the market as a whole.

·Small-Cap Risk. An ETP may invest in small-capitalization companies. Small-cap companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. In particular, small-cap companies may have limited product lines, markets, and financial resources and may be dependent upon   a relatively small management group. These securities may be listed on an exchange or trade over-the-counter, and may or may not pay dividends. During a period when the performance of small-cap stocks falls behind that of other types of investments, such as large-cap stocks, the ETP's performance could be adversely affected.

· Tracking Error Risk. Tracking error can arise due to factors such as the effect of transaction fees and expenses incurred by an ETP, changes in composition of the ETP's benchmark, and the ability of the ETP manager or sponsor to successfully implement his or her investment strategy.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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.

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products that are not investment companies in which the Fund invests, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include 'Acquired Fund Fees and Expenses'.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.85% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Entity Central Index Key

dei_EntityCentralIndexKey

0001408970

AdvisorShares Cambria Global Tactical ETF (Prospectus Summary) | AdvisorShares Cambria Global Tactical ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

CAMBRIA GLOBAL TACTICAL ETF (NYSE Arca Ticker: GTAA)

Objective [Heading]

rr_ObjectiveHeading

INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Cambria Global Tactical ETF (the “Fund”) seeks to preserve and grow capital from investments in the U.S. and foreign equity, fixed income, commodity and currency markets, independent of market direction.

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 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. 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, 2013, the Fund's portfolio turnover rate was 236% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

236.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement or Recaptured Expense in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include Acquired Fund Fees and Expenses.

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 is considered a “fund of funds” that seeks to achieve its investment objective by primarily investing in other affiliated and unaffiliated exchange-traded funds (the “Underlying ETFs”) that offer diversified exposure, including inverse exposure, to global regions, countries, styles (market capitalization, value, growth, etc.) or sectors, and other exchange-traded products including, but not limited to, exchange-traded notes (“ETNs”), exchange-traded currency trusts, and closed-end funds (together with Underlying ETFs, “ETPs”).

The Fund seeks to preserve and grow capital by producing absolute returns with reduced volatility and manageable risk and drawdowns. The Fund's investment strategies are inherently designed as risk-management and capital preservation approaches.The Fund will invest in ETPs spanning all the major world asset classes, including equities, bonds, real estate, commodities, and currencies. Cambria Investment Management, L.P. (the “Sub-Advisor”) will utilize a quantitative approach with strict risk management controls to actively manage the Fund's portfolio in an attempt to control downside losses and protect capital. The wide diversification coupled with prudent portfolio management should allow for the Fund to perform in any economic environment.

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 that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETPs and the allocation of assets among such ETPs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

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.

Early Closing Risk. An unanticipated early closing of NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

ETN 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.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. 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 lower Fund performance.

Premium-Discount Risk. The Fund's shares may trade above or below their NAV. The trading price of the Fund's shares may deviate significantly from their NAV during periods of market volatility.

Tax Risk.In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in ETPs, the Fund will be subject to the risks associated with such vehicles' 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 asset could decrease. These risks include any combination of the risks described below, as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the ETPs and their exposure to various security types and geographic regions.

Commodity Risk . Because certain of the ETPs may have a significant portion of their assets exposed directly or indirectly to commodities or commodity-linked securities, developments affecting commodities may have a disproportionate impact on such ETPs. An ETP's investment in commodities or commodity-linked derivative instruments may subject the ETP (and indirectly the Fund) to greater volatility than investments in traditional securities, particularly if the instruments involve leverage. The value of commodities and commodity-linked derivative instruments may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments.

Credit Risk . Certain of the ETPs are subject to the risk that a decline in the credit quality of a portfolio investment or a counterparty to a portfolio investment could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

Emerging Markets Risk . There is an increased risk of price volatility associated with an ETP's investments in, or an ETN's exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Fixed Income Risk . An ETP's investments in, or exposure to, fixed income securities are subject to the risk that the securities may be paid off earlier or later than expected. Either situation could cause the ETP to hold securities paying lower-than-market rates of interest, which could hurt the Fund's yield or share price.

Foreign Currency Risk . Currency movements may negatively impact the value of an ETP portfolio security or reference asset even when there is no change in the value of the security in the issuer's home country. Certain of the ETPs may not hedge against the risk of currency exchange rate fluctuations, while other ETPs may if there is volatility in currency exchange rates.

Foreign Securities Risk . An ETP's investments in, or exposure to, foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

Interest Rate Risk . An ETP's investments in or exposure to, fixed income securities are subject to the risk that interest rates rise and fall over time. As with any investment whose yield reflects current interest rates, an ETP's yield will change over time. During periods when interest rates are low, an ETP's yield (and total return) also may be low. To the extent that the investment advisor or issuer of an ETP anticipates interest rate trends imprecisely, the ETP could miss yield opportunities or its share price could fall.

Real Estate Investment Trusts (REITs) Risk .Certain of the ETPs invest in REITs. An ETP'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. REITs are more dependent upon specialized management skills, have limited diversification and are, therefore, generally dependent on their ability to generate cash flow to make distributions to shareholders. In addition, REITs have their own expenses, and the ETP will bear a proportionate share of those expenses.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

rr_RiskLoseMoney

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

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 S&P 500 Index, which is a broad-based, unmanaged measurement of changes in stock market conditions based on the average of 500 widely held common stocks. 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 Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

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.

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.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund's year-to-date total return as of September 30, 2013 was -1.02%.

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

	Return	Quarter/Year
Highest Return	3.84%	1Q/2012
Lowest Return	-7.79%	3Q/2011

Performance Table Heading

rr_PerformanceTableHeading

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

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

rr_IndexNoDeductionForFeesExpensesTaxes

Reflects no deduction for fees, expenses, or taxes

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-deferred 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 Cambria Global Tactical ETF (Prospectus Summary) | AdvisorShares Cambria Global Tactical ETF | S&P 500 Index

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

S&P 500 Index (Reflects no deduction for fees, expenses, or taxes)

1 Year

rr_AverageAnnualReturnYear01

16.00%

Since Inception

rr_AverageAnnualReturnSinceInception

8.17%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 25, 2010

AdvisorShares Cambria Global Tactical ETF (Prospectus Summary) | AdvisorShares Cambria Global Tactical ETF | AdvisorShares Cambria Global Tactical ETF

Risk/Return:

rr_RiskReturnAbstract

MANAGEMENT FEES

rr_ManagementFeesOverAssets

0.90%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

0.25%

ACQUIRED FUND FEES AND EXPENSES

rr_AcquiredFundFeesAndExpensesOverAssets

0.44%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

1.59%

^[2]

FEE WAIVER/EXPENSE REIMBURSEMENT OR RECAPTURED EXPENSE

rr_FeeWaiverOrReimbursementOverAssets

none

^[3]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER/EXPENSE REIMBURSEMENT OR RECAPTURED EXPENSE

rr_NetExpensesOverAssets

1.59%

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

a year from the date of this Prospectus.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 161

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

501

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

864

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,885

Annual Return 2011

rr_AnnualReturn2011

(7.34%)

Annual Return 2012

rr_AnnualReturn2012

6.66%

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2013

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

(1.02%)

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Mar. 31, 2012

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

3.84%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(7.79%)

Label

rr_AverageAnnualReturnLabel

Return Before Taxes Based on NAV

1 Year

rr_AverageAnnualReturnYear01

6.66%

Since Inception

rr_AverageAnnualReturnSinceInception

0.62%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 25, 2010

AdvisorShares Cambria Global Tactical ETF (Prospectus Summary) | AdvisorShares Cambria Global Tactical ETF | AdvisorShares Cambria Global Tactical ETF | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

^[4]

1 Year

rr_AverageAnnualReturnYear01

5.95%

Since Inception

rr_AverageAnnualReturnSinceInception

0.13%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 25, 2010

AdvisorShares Cambria Global Tactical ETF (Prospectus Summary) | AdvisorShares Cambria Global Tactical ETF | AdvisorShares Cambria Global Tactical ETF | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

^[4]

1 Year

rr_AverageAnnualReturnYear01

4.46%

Since Inception

rr_AverageAnnualReturnSinceInception

0.31%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 25, 2010

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement or Recaptured Expense in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.35% of the Fund's average daily net assets for a year from the date of this Prospectus. Pursuant to the expense limitation agreement, the Advisor is entitled to recapture any fees the Advisor waives and Fund expenses that the Advisor reimburses until the third anniversary of the end of the fiscal year in which such waiver and/or reimbursement occurs, to the extent that such recapture by the Advisor will not cause the Fund to exceed any applicable expense limitation that is in place for the Fund. 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[4] 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-deferred 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.

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AdvisorShares Cambria Global Tactical ETF (Prospectus Summary) | AdvisorShares Cambria Global Tactical ETF

CAMBRIA GLOBAL TACTICAL ETF (NYSE Arca Ticker: GTAA)

INVESTMENT OBJECTIVE

The Cambria Global Tactical ETF (the “Fund”) seeks to preserve and grow capital from investments in the U.S. and foreign equity, fixed income, commodity and currency markets, independent of market direction.

FUND FEES AND EXPENSES

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(fees paid directly from your investment) None

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		AdvisorShares Cambria Global Tactical ETF
MANAGEMENT FEES		0.90%
DISTRIBUTION (12b-1) FEES		none
OTHER EXPENSES		0.25%
ACQUIRED FUND FEES AND EXPENSES	[1]	0.44%
TOTAL ANNUAL FUND OPERATING EXPENSES	[2]	1.59%
FEE WAIVER/EXPENSE REIMBURSEMENT OR RECAPTURED EXPENSE	[3]	none
TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER/EXPENSE REIMBURSEMENT OR RECAPTURED EXPENSE		1.59%

EXAMPLE

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:

Expense Example (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
AdvisorShares Cambria Global Tactical ETF	161	501	864	1,885

PORTFOLIO TURNOVER

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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, 2013, the Fund's portfolio turnover rate was 236% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

The Fund is considered a “fund of funds” that seeks to achieve its investment objective by primarily investing in other affiliated and unaffiliated exchange-traded funds (the “Underlying ETFs”) that offer diversified exposure, including inverse exposure, to global regions, countries, styles (market capitalization, value, growth, etc.) or sectors, and other exchange-traded products including, but not limited to, exchange-traded notes (“ETNs”), exchange-traded currency trusts, and closed-end funds (together with Underlying ETFs, “ETPs”).

The Fund seeks to preserve and grow capital by producing absolute returns with reduced volatility and manageable risk and drawdowns. The Fund's investment strategies are inherently designed as risk-management and capital preservation approaches.The Fund will invest in ETPs spanning all the major world asset classes, including equities, bonds, real estate, commodities, and currencies. Cambria Investment Management, L.P. (the “Sub-Advisor”) will utilize a quantitative approach with strict risk management controls to actively manage the Fund's portfolio in an attempt to control downside losses and protect capital. The wide diversification coupled with prudent portfolio management should allow for the Fund to perform in any economic environment.

PRINCIPAL RISKS OF INVESTING IN THE FUND

The Fund is subject to a number of risks that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETPs and the allocation of assets among such ETPs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

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.

Early Closing Risk. An unanticipated early closing of NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

ETN 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.

Equity Risk. The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual issuers, industries or the stock market as a whole. In addition, equity markets tend to move in cycles which may cause stock prices to fall over short or extended periods of time.

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.

Market Risk. Due to market conditions, the Fund's investments may fluctuate significantly from day to day. 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 lower Fund performance.

Premium-Discount Risk. The Fund's shares may trade above or below their NAV. The trading price of the Fund's shares may deviate significantly from their NAV during periods of market volatility.

Tax Risk.In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”), the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in ETPs, the Fund will be subject to the risks associated with such vehicles' 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 asset could decrease. These risks include any combination of the risks described below, as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the ETPs and their exposure to various security types and geographic regions.

Commodity Risk . Because certain of the ETPs may have a significant portion of their assets exposed directly or indirectly to commodities or commodity-linked securities, developments affecting commodities may have a disproportionate impact on such ETPs. An ETP's investment in commodities or commodity-linked derivative instruments may subject the ETP (and indirectly the Fund) to greater volatility than investments in traditional securities, particularly if the instruments involve leverage. The value of commodities and commodity-linked derivative instruments may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments.

Credit Risk . Certain of the ETPs are subject to the risk that a decline in the credit quality of a portfolio investment or a counterparty to a portfolio investment could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations.

Emerging Markets Risk . There is an increased risk of price volatility associated with an ETP's investments in, or an ETN's exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

Fixed Income Risk . An ETP's investments in, or exposure to, fixed income securities are subject to the risk that the securities may be paid off earlier or later than expected. Either situation could cause the ETP to hold securities paying lower-than-market rates of interest, which could hurt the Fund's yield or share price.

Foreign Currency Risk . Currency movements may negatively impact the value of an ETP portfolio security or reference asset even when there is no change in the value of the security in the issuer's home country. Certain of the ETPs may not hedge against the risk of currency exchange rate fluctuations, while other ETPs may if there is volatility in currency exchange rates.

Foreign Securities Risk . An ETP's investments in, or exposure to, foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

Interest Rate Risk . An ETP's investments in or exposure to, fixed income securities are subject to the risk that interest rates rise and fall over time. As with any investment whose yield reflects current interest rates, an ETP's yield will change over time. During periods when interest rates are low, an ETP's yield (and total return) also may be low. To the extent that the investment advisor or issuer of an ETP anticipates interest rate trends imprecisely, the ETP could miss yield opportunities or its share price could fall.

Real Estate Investment Trusts (REITs) Risk .Certain of the ETPs invest in REITs. An ETP'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. REITs are more dependent upon specialized management skills, have limited diversification and are, therefore, generally dependent on their ability to generate cash flow to make distributions to shareholders. In addition, REITs have their own expenses, and the ETP will bear a proportionate share of those expenses.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

FUND PERFORMANCE

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 S&P 500 Index, which is a broad-based, unmanaged measurement of changes in stock market conditions based on the average of 500 widely held common stocks. 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.

The Fund's year-to-date total return as of September 30, 2013 was -1.02%.

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

	Return	Quarter/Year
Highest Return	3.84%	1Q/2012
Lowest Return	-7.79%	3Q/2011

AVERAGE ANNUAL TOTAL RETURNS FOR THE PERIODS ENDING DECEMBER 31, 2012

Average Annual Total Returns	Label		1 Year	Since Inception	Inception Date
AdvisorShares Cambria Global Tactical ETF	Return Before Taxes Based on NAV		6.66%	0.62%	Oct. 25, 2010
AdvisorShares Cambria Global Tactical ETF After Taxes on Distributions	Return After Taxes on Distributions	[1]	5.95%	0.13%	Oct. 25, 2010
AdvisorShares Cambria Global Tactical ETF After Taxes on Distributions and Sales	Return After Taxes on Distributions and Sale of Fund Shares	[1]	4.46%	0.31%	Oct. 25, 2010
AdvisorShares Cambria Global Tactical ETF S&P 500 Index	S&P 500 Index (Reflects no deduction for fees, expenses, or taxes)		16.00%	8.17%	Oct. 25, 2010

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products in which the Fund invests that are not investment companies, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver/Expense Reimbursement or Recaptured Expense in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include Acquired Fund Fees and Expenses.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.35% of the Fund's average daily net assets for a year from the date of this Prospectus. Pursuant to the expense limitation agreement, the Advisor is entitled to recapture any fees the Advisor waives and Fund expenses that the Advisor reimburses until the third anniversary of the end of the fiscal year in which such waiver and/or reimbursement occurs, to the extent that such recapture by the Advisor will not cause the Fund to exceed any applicable expense limitation that is in place for the Fund. 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.

[1] 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-deferred 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.

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Risk/Return:

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Entity Central Index Key

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0001408970

AdvisorShares STAR Global Buy-Write ETF (Prospectus Summary) | AdvisorShares STAR Global Buy-Write ETF

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

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STAR Global Buy-Write ETF (NYSE Arca Ticker: VEGA)

Objective [Heading]

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INVESTMENT OBJECTIVE

Objective, Primary [Text Block]

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The STAR Global Buy-Write ETF (the “Fund”) seeks consistent repeatable returns across all market cycles.

Expense [Heading]

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FUND FEES AND EXPENSES

Expense Narrative [Text Block]

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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]

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SHAREHOLDER FEES(fees paid directly from your investment) None

Operating Expenses Caption [Text]

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ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

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PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

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The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover 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. 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. For the period from September 17, 2012, the Fund's commencement of operations, through the most recent fiscal year ended June 30, 2013, the Fund's portfolio turnover rate was 40% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

40.00%

Expense Exchange Traded Fund Commissions [Text]

rr_ExpenseExchangeTradedFundCommissions

Most investors will incur customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the table below.

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund’s financial highlights (and the Fund’s financial statements) because the financial highlights include only the Fund’s direct operating expenses and do not include “Acquired Fund Fees and Expenses”.

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 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]

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PRINCIPAL INVESTMENT STRATEGIES

Strategy Narrative [Text Block]

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The Fund is a “fund of funds” and intends to invest primarily in exchange-traded funds (“ETFs”) and exchange-traded notes (“ETNs”) that seek to track a diversified basket of global indices and investment sectors that meet certain selection criteria established by Partnervest Advisory Services, LLC (the “Sub-Advisor”). The Fund also may invest, subject to the same selection criteria, in exchange-traded products that invest directly in commodities or currencies and that are registered only pursuant to the Securities Act of 1933, as amended, (collectively, with ETFs and ETNs, (“ETPs”)). The selection criteria include size, historical track record, diversification among indices, the correlation of an index to other indices and an ability to write covered call options on the particular ETP. An ETP may be disposed of if it no longer meets the selection criteria.

The Sub-Advisor seeks to achieve the Fund's investment objective by using a proprietary overwrite strategy known as Volatility Enhanced Global Appreciation (“VEGA”). VEGA uses the Fund's portfolio investments in ETPs in combination with call options on the Fund's portfolio investments to seek cumulative price appreciation from the portfolio's global exposure while generating an additional return stream from the sale of covered call and/or cash-secured put options. A covered call option involves holding a long position in a particular asset, in this case shares of an ETP, and writing a call option on that same asset with the goal of realizing additional income from the option premium. A put option is a contract that gives the writer of the option the right to sell a specified amount of the asset underlying the option at a specified price (the “strike price”) within a specified time. When a put option is exercised or assigned, the writer of the option is obligated to purchase the requisite amount of the asset underlying the option to complete the sale. A put option is considered cash-secured when the writer of the put option segregates an amount of cash or cash equivalents sufficient to cover the purchase price of the asset underlying the option. To the extent cash and cash equivalents in the Fund's portfolio serve as collateral for cash-secured put options, such cash and cash equivalents may not be invested in ETPs, additional options or other similar investments in pursuit of the Fund's investment objective.Rather, on a day-to-day basis, such collateral may be invested in U.S. government securities, short-term, high quality fixed income securities, money market instruments, cash, and other cash equivalents with maturities of one year or less, or ETFs that hold such investments.

Risk [Heading]

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PRINCIPAL RISKS OF INVESTING IN THE FUND

Risk Narrative [Text Block]

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The Fund is subject to a number of risks that may affect the value of its shares, including:

Allocation Risk. The Fund's particular allocations may have a significant effect on the Fund's performance. Allocation risk is the risk that the selection of ETPs and the allocation of assets among such ETPs will cause the Fund to underperform other funds with a similar investment objective that do not allocate their assets in the same manner or the market as a whole.

Derivatives Risk. The Fund intends to invest in derivatives to a significant extent. Derivatives may be riskier than other types of investments because they may be more sensitive to changes in economic or market conditions than other types of investments and could result in losses that significantly exceed the Fund's original investment. A derivative is a financial contract the value of which depends on, or is derived from, the value of a financial asset (such as stock, bond or currency), a physical asset (such as gold) or a market index (such as the S&P 500 Index). Many derivatives (including option contracts) create leverage thereby causing the Fund to be more volatile than it would be if it had not invested in derivatives. Derivatives also expose the Fund to counterparty risk (the risk that the derivative counterparty will not fulfill its contractual obligations) and to credit risk.

Early Closing Risk. An unanticipated early closing of the NYSE Arca, Inc. (the “Exchange”) may result in a shareholder's inability to buy or sell shares of the Fund on that day.

ETN 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.

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.

Market Risk. Due to market conditions, the value of the Fund's investments may fluctuate significantly from day to day. This volatility may cause the value of your investment in the Fund to decrease.

Options Risk. Writing and purchasing call and put options are highly specialized activities and entail greater than ordinary investment risks. The value of the Fund's positions in options fluctuates in response to changes in the value of the underlying security. The Fund also risks losing all or part of the cash paid for purchasing call and put options. Fund assets covering written options cannot be sold while the option is outstanding, unless replaced with similar assets. As a result, there is a possibility that segregation of a large percentage of the Fund's assets could affect its portfolio management as well as the ability of the Fund to meet other current obligations.

Premium-Discount Risk. The Fund's shares 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.

Tax Risk. In order to qualify for the favorable U.S. federal income tax treatment accorded to regulated investment companies (“RICs”) the Fund must derive at least 90% of its gross income in each taxable year from certain categories of income (“qualifying income”). Certain of the Fund's investments may generate income that is not qualifying income. If the Fund were to fail to meet the qualifying income test and fail to qualify as a RIC, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.

Trading Risk. Although the Fund's shares are currently listed on the Exchange, there can be no assurance that an active trading market for 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 view of the Exchange, make trading in shares inadvisable.

ETP Investment Risk. Through its investments in ETPs, the Fund will be subject to the risks associated with such investment vehicles' investments or reference assets in the case of ETNs, including the possibility that the value of the securities or instruments held or tracked by an ETP could decrease. These risks include any combination of the risks described below, as well as certain of the risks described above. The Fund's exposure to a particular risk will be proportionate to the Fund's overall allocation to the ETPs and their exposure to various security types, currencies, market sectors, and geographic regions.

·Commodity Risk. Because certain of the ETPs may have a significant portion of their assets exposed directly or indirectly to commodities or commodity-linked securities, developments affecting commodities may have a disproportionate impact on such ETPs. An ETP's investment in commodities or commodity-linked derivative  instruments may subject the ETP (and indirectly the Fund) to greater volatility than investments in traditional securities, particularly if the instruments involve leverage. The value of commodities and commodity-linked derivative instruments may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments.

·Concentration Risk.An ETP may, at various times, concentrate in the securities or commodities of a particular industry, group of industries, market sector or geographic region. To the extent an ETP's investments are so concentrated, the Fund may be adversely affected by political, regulatory, and market conditions affecting the particular   industry, group of industries, market sector or geographic region.

·Counterparty Risk. Commodity-linked derivatives, repurchase agreements, swap agreements and other forms of financial instruments that involve counterparties subject an ETP to the risk that the counterparty could default on its obligations under the agreement, either through the counterparty's bankruptcy or failure to perform its  obligations.

·Credit Risk. Certain of the ETPs are subject to the risk that a decline in the credit quality of a portfolio investment or a counterparty to a portfolio investment could cause the ETP's share price to fall. The ETPs could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make  timely principal or interest payments or otherwise honor its obligations.

·Emerging Markets Risk. There is an increased risk of price volatility associated with an ETP's investments in, or exposure to, emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar.

·Equity Risk.The prices of equity securities in which an ETP invests or is exposed to rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole.

·Foreign Currency Risk. Currency movements may negatively impact the value of an ETP portfolio security even when there is no change in the value of the security in the issuer's home country. Certain ETPs may not hedge against the risk of currency exchange rate fluctuations, while other ETPs may if there is volatility in currency   exchange rates.

·Foreign Securities Risk. An ETP's investments in, or exposure to, foreign issuers involve certain risks including, but not limited to, risks of adverse changes in foreign economic, political, regulatory and other conditions, or changes in currency exchange rates or exchange control regulations (including limitations on currency movements and   exchanges). In certain countries, legal remedies available to investors may be more limited than those available with respect to investments in the United States. In addition, the securities of some foreign companies may be less liquid and, at times, more volatile than securities of comparable U.S. companies.

·Investment Risk. The Fund may experience losses with respect to its investment in an ETP. Further, there is no guarantee that an ETP will achieve its objective.

·Large-Cap Risk. An ETP may invest in large-capitalization companies. Returns on investments in stocks of large U.S. companies could trail the returns on investments in stocks of small- and mid-cap companies or the market as a whole.

·Mid-Cap Risk. An ETP may invest in mid-capitalization companies. Mid-cap companies may be more volatile and more likely than large-cap companies to have limited product lines, markets or financial resources, or depend on a few key employees. Returns on investments in stocks of mid-cap companies could trail the returns on   investments in stocks of large- or small-cap companies or the market as a whole.

·Small-Cap Risk. An ETP may invest in small-capitalization companies. Small-cap companies may be more vulnerable than larger, more established organizations to adverse business or economic developments. In particular, small-cap companies may have limited product lines, markets, and financial resources and may be dependent upon   a relatively small management group. These securities may be listed on an exchange or trade over-the-counter, and may or may not pay dividends. During a period when the performance of small-cap stocks falls behind that of other types of investments, such as large-cap stocks, the ETP's performance could be adversely affected.

· Tracking Error Risk. Tracking error can arise due to factors such as the effect of transaction fees and expenses incurred by an ETP, changes in composition of the ETP's benchmark, and the ability of the ETP manager or sponsor to successfully implement his or her investment strategy.

As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Risk Lose Money [Text]

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As with any fund, there is no guarantee that the Fund will achieve its investment objective.

Bar Chart and Performance Table [Heading]

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FUND PERFORMANCE

Performance Narrative [Text Block]

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A comparison of the Fund's performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year. Of course, once the Fund has performance, this 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 One Year or Less [Text]

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A comparison of the Fund’s performance with that of a broad measure of market performance may give some indication of the risks of an investment in the Fund; however, the Fund is new and, therefore, does not have a performance history for a full calendar year.

Performance Availability Website Address [Text]

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www.advisorshares.com

Performance Past Does Not Indicate Future [Text]

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Of course, once the Fund has performance, this past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.

AdvisorShares STAR Global Buy-Write ETF (Prospectus Summary) | AdvisorShares STAR Global Buy-Write ETF | AdvisorShares STAR Global Buy-Write ETF

Risk/Return:

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MANAGEMENT FEES

rr_ManagementFeesOverAssets

1.35%

DISTRIBUTION (12b-1) FEES

rr_DistributionAndService12b1FeesOverAssets

none

OTHER EXPENSES

rr_OtherExpensesOverAssets

1.00%

ACQUIRED FUND FEES AND EXPENSES

rr_AcquiredFundFeesAndExpensesOverAssets

0.25%

^[1]

TOTAL ANNUAL FUND OPERATING EXPENSES

rr_ExpensesOverAssets

2.60%

^[2]

FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_FeeWaiverOrReimbursementOverAssets

0.50%

^[3]

TOTAL ANNUAL FUND OPERATING EXPENSES AFTER FEE WAIVER AND/OR EXPENSE REIMBURSEMENT

rr_NetExpensesOverAssets

2.10%

^[2]

Expense Example, with Redemption, 1 Year

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$ 213

Expense Example, with Redemption, 3 Years

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760

Expense Example, with Redemption, 5 Years

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1,335

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 2,895

[1] As a shareholder in certain exchange-traded funds (the 'Acquired Funds'), the Fund will indirectly bear its proportionate share of the fees and expenses of the Acquired Funds. 'Acquired Fund Fees and Expenses' do not reflect the operating expenses of exchange-traded products that are not investment companies in which the Fund invests, including exchange-traded notes and exchange-traded pooled investment vehicles not registered pursuant to the Investment Company Act of 1940, as amended (the '1940 Act').

[2] The Total Annual Fund Operating Expenses and Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement in this fee table may not correlate to the expense ratios in the Fund's financial highlights (and the Fund's financial statements) because the financial highlights include only the Fund's direct operating expenses and do not include 'Acquired Fund Fees and Expenses'.

[3] AdvisorShares Investments, LLC (the 'Advisor') has contractually agreed to reduce its fees and/or reimburse expenses in order 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 1.85% of the Fund's average daily net assets for at least a 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 at its principal place of business, such termination to be effective as of the close of business on the last day of the then-current one-year period.