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CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (USD $)
In Thousands, unless otherwise specified
Common Stock
Additional Paid-in Capital
Retained Earnings (Deficit)
Total
Balance at Jan. 28, 2012 $ 167us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 19,271us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (8,687)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ 10,751us-gaap_StockholdersEquity
Balance (in shares) at Jan. 28, 2012 8,387us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Increase (Decrease) in Stockholders' Equity        
Stock-based compensation   967us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  967us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Tax effect from stock option exercises   (61)us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  (61)us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
Issuance of common stock under stock compensation plans including tax effect   72us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  72us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
Issuance of common stock under stock compensation plans including tax effect (in shares) 13us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Dividends     (5,036)us-gaap_DividendsCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(5,036)us-gaap_DividendsCommonStock
Net income     6,833us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
6,833us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Balance at Feb. 02, 2013 167us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
20,249us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(6,890)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
13,526us-gaap_StockholdersEquity
Balance (in shares) at Feb. 02, 2013 8,400us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Increase (Decrease) in Stockholders' Equity        
Stock-based compensation   1,069us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  1,069us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Tax effect from stock option exercises   (285)us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  (285)us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
Stock option exercises   36chke_StockIssuedDuringPeriodValueStockOptionsExercisedAndExpired
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  36chke_StockIssuedDuringPeriodValueStockOptionsExercisedAndExpired
Stock option exercises 3chke_StockIssuedDuringPeriodSharesStockOptionsExercisedAndExpired
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Dividends     (2,521)us-gaap_DividendsCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(2,521)us-gaap_DividendsCommonStock
Net income     6,074us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
6,074us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Balance at Feb. 01, 2014 167us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
21,069us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(3,337)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
17,899us-gaap_StockholdersEquity
Balance (in shares) at Feb. 01, 2014 8,403us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Increase (Decrease) in Stockholders' Equity        
Stock-based compensation   1,175us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  1,175us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Tax effect from stock option exercises   198us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  198us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
Stock option exercises and equity issuances, net of tax 4chke_StockIssuedDuringPeriodValueStockOptionsExercisedAndEquityIssuancesNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
1,582chke_StockIssuedDuringPeriodValueStockOptionsExercisedAndEquityIssuancesNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  1,586chke_StockIssuedDuringPeriodValueStockOptionsExercisedAndEquityIssuancesNetOfTax
Stock option exercises and equity issuances, net of tax (in shares) 155chke_StockIssuedDuringPeriodSharesStockOptionsExercisedAndEquityIssuances
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Dividends     (841)us-gaap_DividendsCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(841)us-gaap_DividendsCommonStock
Net income     9,820us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
9,820us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Balance at Jan. 31, 2015 $ 171us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 24,024us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ 5,642us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ 29,837us-gaap_StockholdersEquity
Balance (in shares) at Jan. 31, 2015 8,558us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember