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Commitments and Contingencies - Additional Information (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Aug. 02, 2014
Aug. 03, 2013
Aug. 02, 2014
Aug. 03, 2013
Operating Leases        
Rent expense $ 9,258 $ 8,427 $ 18,152 $ 15,480