Summary of Significant Accounting Policies (Details 3) (Restated Target Agreement and Target Canada Agreement, USD $) In Millions, unless otherwise specified	3 Months Ended	14 Months Ended
May 04, 2013	Jan. 31, 2013
Restated Target Agreement and Target Canada Agreement
Significant Contracts
Guaranteed royalty	$ 10.5	$ 9.0

Represents the royalty revenue derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights and trademarks.

No definition available.

Name:	chke_GuaranteedRoyaltyAmount
Namespace Prefix:	chke_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration