Earnings Per Share - Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 28, 2019	Apr. 29, 2018
Earnings Per Share [Abstract]
Net income	$ 13,294	$ 12,382
Weighted average common shares outstanding - basic	66,105	66,324
Dilutive effect of options and restricted stock units	1,871	1,871
Weighted average common shares outstanding - diluted	67,976	68,195
Basic earnings per common share (in dollars per share)	$ 0.20	$ 0.19
Diluted earnings per common share (in dollars per share)	$ 0.20	$ 0.18
Anti-dilutive shares not included in the above calculations	500	146