Business Organization and Summary Of Significant Accounting Policies - Description of Business (Narrative) (Details)	Jan. 31, 2015 fanchise store
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of stores throughout the U.S., U.S. Virgin Islands, PR, and Canada	1,547us-gaap_NumberOfStores
Number of franchise locations in and around Mexico City	19chs_NumberofFranchiseLocations

Represents the number of franchise locations where merchandise is sold.

No definition available.

Name:	chs_NumberofFranchiseLocations
Namespace Prefix:	chs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant