Earnings Per Share - Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 28, 2019	Jul. 29, 2018	Jul. 28, 2019	Jul. 29, 2018
Earnings Per Share [Abstract]
Net income	$ 5,366	$ 25,169	$ 18,660	$ 37,551
Weighted average common shares outstanding - basic	66,519	66,063	66,312	66,194
Dilutive effect of share-based compensation	1,227	2,817	1,502	2,234
Weighted average common shares outstanding - diluted	67,746	68,880	67,814	68,428
Basic earnings per common share (in dollars per share)	$ 0.08	$ 0.38	$ 0.28	$ 0.57
Diluted earnings per common share (in dollars per share)	$ 0.08	$ 0.37	$ 0.28	$ 0.55
Anti-dilutive shares not included in the above calculations	525	202	443	364