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Restructuring and Other Charges (Narrative) (Details) (USD $)
3 Months Ended 12 Months Ended
Jan. 31, 2015
Jan. 31, 2015
store_closure
Feb. 01, 2014
Feb. 02, 2013
Restructuring and Related Activities [Abstract]        
Percent of headquarters and field management eliminated 12.00%us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminatedPeriodPercent      
Restructuring and other charges, pre-tax   $ 16,745,000us-gaap_RestructuringCharges $ 0us-gaap_RestructuringCharges $ 0us-gaap_RestructuringCharges
Number of under-performing stores to close from 2015-2017   120chs_NumberofStoreClosuresStartingNextFiscalYear    
Expected lease termination expense over the next three years   $ 2,100,000chs_OperatingLeasesLeaseTerminationExpectedLeaseExpenseOvertheNextThreeYears