Related Party Transactions (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 28, 2017 USD ($) vice_president	Oct. 29, 2016 USD ($)	Oct. 28, 2017 USD ($) vice_president	Oct. 29, 2016 USD ($)
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	20.40%	19.80%	21.50%	17.50%
Merchandise purchases | Related party vendor
Related Party Transaction [Line Items]
Purchases | $	$ 17,684	$ 16,318	$ 41,743	$ 33,257