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Commitments and Contingencies (Narrative) (Details) (USD $)
 2 Months Ended 12 Months Ended
Mar. 26, 2014
lease
Feb. 01, 2014
Feb. 02, 2013
Jan. 28, 2012
Commitments and Contingencies [Line Items]        
Lease renewal period, minimum (years)   5 years    
Operating lease agreement extension term (years)   10 years    
Operating lease agreement expiration period   2024    
Rent expense   $ 41,800,000 $ 32,800,000 $ 23,600,000
Contingent rents   500,000 500,000 500,000
Number Of Leases 17      
Operating Leases, Future Minimum Payments Due 28,600,000 422,614,000    
Purchase commitments   2,000,000    
Subsequent Event [Member]
        
Commitments and Contingencies [Line Items]        
Average Lease Term Period 10 years      
Key Employees [Member]
        
Commitments and Contingencies [Line Items]        
Maximum additional payments upon employee separation   $ 3,900,000