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. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Numerator
Net income	$ 22,716	$ 23,039	$ 56,335	$ 54,123
Net income and dividends declared allocated to participating securities	(537)	(506)	(1,286)	(1,155)
Net income available to common shareholders	$ 22,179	$ 22,533	$ 55,049	$ 52,968
Denominator
Weighted average common shares outstanding – basic (in shares)	125,643	129,215	125,847	130,406
Dilutive effect of non-participating securities (in shares)	34	147	43	110
Weighted average common and common equivalent shares outstanding – diluted (in shares)	125,677	129,362	125,890	130,516
Net income per share:
Basic (in dollars per share)	$ 0.18	$ 0.17	$ 0.44	$ 0.41
Diluted (in dollars per share)	$ 0.18	$ 0.17	$ 0.44	$ 0.41