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Commitments and Contingencies Commitments and Contingencies - Medical Insurance (Details) (USD $)
12 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Commitments and Contingencies Disclosure [Abstract]    
Individual stop loss coverage limit for employee medical claims $ 125,000perf_MedicalInsuranceIndividualStopLossCoverageLimit  
Aggregate stop loss coverage limit for employee medical claims 4,500,000perf_MedicalInsuranceAggregateStopLossCoverageLimit  
Self Insurance Reserve $ 500,000us-gaap_SelfInsuranceReserve $ 600,000us-gaap_SelfInsuranceReserve