Earnings Per Share - Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 27, 2019	Oct. 28, 2018	Oct. 27, 2019	Oct. 28, 2018
Earnings Per Share [Abstract]
Net income	$ 17,599	$ 12,165	$ 36,259	$ 49,716
Weighted average common shares outstanding - basic	66,387	66,014	66,337	66,134
Dilutive effect of share-based compensation	931	2,717	1,293	2,415
Weighted average common shares outstanding - diluted	67,318	68,731	67,630	68,549
Basic earnings per common share (in dollars per share)	$ 0.27	$ 0.18	$ 0.55	$ 0.75
Diluted earnings per common share (in dollars per share)	$ 0.26	$ 0.18	$ 0.54	$ 0.73
Anti-dilutive shares not included in the above calculations	237	289	223	496