Related Party Transactions (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 29, 2017 USD ($) vice_president	Jul. 30, 2016 USD ($)	Jul. 29, 2017 USD ($) vice_president	Jul. 30, 2016 USD ($)
Related party vendor
Related Party Transaction [Line Items]
Number of Vice Presidents of merchandising | vice_president	2		2
Merchandise purchases
Related Party Transaction [Line Items]
Purchases as a percent of total merchandise purchases	22.90%	16.00%	22.30%	15.70%
Merchandise purchases | Related party vendor
Related Party Transaction [Line Items]
Purchases | $	$ 12,389	$ 8,414	$ 24,078	$ 16,960