Document and Entity Information	0 Months Ended
	Oct. 31, 2012
Risk/Return:
Document Type	485BPOS
Document Period End Date	Oct. 31, 2012
Registrant Name	ADVISORS SERIES TRUST
Central Index Key	0001027596
Amendment Flag	false
Document Creation Date	Feb. 22, 2013
Document Effective Date	Feb. 28, 2013
Prospectus Date	Feb. 28, 2013
Edgar Lomax Value Fund | Edgar Lomax Value Fund | Investor Class
Risk/Return:
Trading Symbol	LOMAX