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Business Combinations (Details 2) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 0 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Sep. 04, 2012
Business combinations        
Amortization of Intangible Assets $ 932us-gaap_AmortizationOfIntangibleAssets $ 995us-gaap_AmortizationOfIntangibleAssets $ 1,491us-gaap_AmortizationOfIntangibleAssets  
Liz Lange and Completely Me by Liz Lange brands        
Business combinations        
Cash purchase price       13,100us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= chke_LizLangeAndCompletelyMeByLizLangeBrandsAssetsAcquisitionMember
Earn-out payable       900us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
/ us-gaap_BusinessAcquisitionAxis
= chke_LizLangeAndCompletelyMeByLizLangeBrandsAssetsAcquisitionMember
Liz Lange and Completely Me by Liz Lange brands | Acquired Trademarks        
Business combinations        
Amortization of Intangible Assets $ 0us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_BusinessAcquisitionAxis
= chke_LizLangeAndCompletelyMeByLizLangeBrandsAssetsAcquisitionMember
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= chke_AcquiredTrademarksMember