Stock Repurchase Program - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		112 Months Ended
	Jul. 30, 2017	Jul. 31, 2016	Jul. 30, 2017	Jul. 31, 2016	Jul. 30, 2017
Equity [Abstract]
Repurchased shares of common stock, cost	$ 428	$ 538	$ 10,389	$ 538	$ 147,000
Remaining authorization under stock repurchase program	$ 51,400		$ 51,400		$ 51,400