Summary of Significant Accounting Policies Loyalty Program (Details)	Jan. 28, 2012 stores
Summary of Significant Accounting Policies [Abstract]
Number of Stores in Loyalty Program Pilot	91

Amount represents the number of stores in loyalty program pilot.

No definition available.

Name:	expr_NumberOfStoresInLoyaltyProgramPilot
Namespace Prefix:	expr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant