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Label Element Value
Prospectus [Line Items] rr_ProspectusLineItems  
Document Type dei_DocumentType 497
Document Period End Date dei_DocumentPeriodEndDate Jun. 30, 2019
Entity Registrant Name dei_EntityRegistrantName Advisors Series Trust
Entity Central Index Key dei_EntityCentralIndexKey 0001027596
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate May 26, 2020
Document Effective Date dei_DocumentEffectiveDate May 26, 2020
Prospectus Date rr_ProspectusDate Oct. 29, 2019
Entity Inv Company Type dei_EntityInvCompanyType N-1A
Davidson Multi-Cap Equity Fund  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk/Return [Heading] rr_RiskReturnHeading Davidson Multi-Cap Equity Fund
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock

Davidson Multi-Cap Equity Fund
Class A: DFMAX
Class I: DFMIX

Supplement dated May 26, 2020, to the
Statutory Prospectus dated October 29, 2019

1.
The relevant information under the section entitled "Principal Risks of Investing in the Fund" on page 2 of the Fund's Statutory Prospectus is deleted and replaced with the following:
Risk [Heading] rr_RiskHeading Principal Risks of Investing in the Fund
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
Market and Regulatory Risk. Events in the financial markets and economy may cause volatility and uncertainty and adversely impact the Fund’s performance. Market events may affect a single issuer, industry, sector, or the market as a whole. Traditionally liquid investments may experience periods of diminished liquidity. Governmental and regulatory actions, including tax law changes, may also impair portfolio management and have unexpected or adverse consequences on particular markets, strategies, or investments. The Fund's investments may decline in value due to factors affecting individual issuers (such as the results of supply and demand), or sectors within the securities markets. The value of a security or other investment also may go up or down due to general market conditions that are not specifically related to a particular issuer, such as real or perceived adverse economic conditions, changes in interest rates or exchange rates, or adverse investor sentiment generally. In addition, unexpected events and their aftermaths, such as the spread of deadly diseases; natural, environmental or man-made disasters; financial, political or social disruptions; terrorism and war; and other tragedies or catastrophes, can cause investor fear and panic, which can adversely affect the economies of many companies, sectors, nations, regions and the market in general, in ways that cannot necessarily be foreseen.
Supplement Closing [Text Block] ck0001027596_SupplementClosingTextBlock
Please retain this supplement for your reference.
Davidson Multi-Cap Equity Fund | Class A  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol DFMAX
Davidson Multi-Cap Equity Fund | Class I  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol DFMIX