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Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 09, 2015
Jul. 30, 2016
Aug. 01, 2015
Jul. 30, 2016
Aug. 01, 2015
Jan. 30, 2016
Operating Leases            
Rent expense   $ 10,885 $ 9,869 $ 21,535 $ 19,624  
Loss contingency trial start date       Mar. 02, 2015    
Loss contingency trial end date       Mar. 06, 2015    
Trial award against defendants to the action $ 11,887          
Accrued amount of litigation           $ 4,000
Reversal amount of accrued litigation settlement     $ 4,000