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Summary of Significant Accounting Policies (Details 4) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 0 Months Ended
May 02, 2015
May 03, 2014
Jul. 16, 2013
Stock-Based Compensation      
Stock-based compensation expense recognized (in dollars) $ 178us-gaap_AllocatedShareBasedCompensationExpense $ 164us-gaap_AllocatedShareBasedCompensationExpense  
Stock Options | Employees      
Stock-Based Compensation      
Vesting period 3 years    
Stock Options | Minimum | Employees      
Stock-Based Compensation      
Expiration period 7 years    
Stock Options | Maximum | Employees      
Stock-Based Compensation      
Expiration period 10 years    
2013 Plan      
Stock-Based Compensation      
Number of additional shares of common stock authorized to be issued     700,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
/ us-gaap_PlanNameAxis
= chke_StockIncentiveAwardPlan2013Member
Number of shares of common stock authorized that were previously reserved but unissued under 2006 Plan     102,483us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= chke_StockIncentiveAwardPlan2013Member
2006 Plan      
Stock-Based Compensation      
Number of shares available for future grants 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= chke_IncentiveAwardPlan2006Member