Document And Entity Information - USD ($)	12 Months Ended
	Jan. 30, 2016	Apr. 29, 2016	Aug. 01, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	AEROPOSTALE INC
Entity Central Index Key	0001168213
Entity Well-known Seasoned Issuer	No
Current Fiscal Year End Date	--01-30
Entity Current Reporting Status	No
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 120,206,205
Entity Common Stock, Shares Outstanding		80,627,791
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jan. 30, 2016