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Business Organization and Summary Of Significant Accounting Policies - Property and Equipment (Narrative) (Details)
12 Months Ended
Jan. 31, 2015
supplier
Feb. 01, 2014
supplier
Number of suppliers with total purchases of 24% and 23%, in 2014 and 2013 respectfully 1chs_NumberofSupplierswithSignificantTotalPurchases 1chs_NumberofSupplierswithSignificantTotalPurchases
Land improvements [Member] | Minimum [Member]    
Estimate useful life 15 years  
Land improvements [Member] | Maximum [Member]    
Estimate useful life 35 years  
Building and building improvements [Member] | Minimum [Member]    
Estimate useful life 20 years  
Building and building improvements [Member] | Maximum [Member]    
Estimate useful life 35 years  
Equipment, furniture and fixtures [Member] | Minimum [Member]    
Estimate useful life 2 years  
Equipment, furniture and fixtures [Member] | Maximum [Member]    
Estimate useful life 20 years  
Leasehold improvements [Member] | Maximum [Member]    
Estimate useful life 10 years