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Related Party Transactions - Selected Results Related to Vendor and Percentages (Detail) - Merchandise Inventory Purchase [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 30, 2016
Aug. 01, 2015
Jul. 30, 2016
Aug. 01, 2015
Related Party Transaction [Line Items]        
Purchases as a percent of total merchandise purchases 16.00% 13.50% 15.70% 13.20%
Vendor [Member]        
Related Party Transaction [Line Items]        
Purchases $ 8,414 $ 8,153 $ 16,960 $ 15,216
Cost of sales 8,763 6,821 17,468 13,184
Accounts payable outstanding at period end $ 3,317 $ 2,181 $ 3,317 $ 2,181