Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 03, 2019	Aug. 04, 2018	Aug. 03, 2019	Aug. 04, 2018
Basic Earnings per Share:
Net income	$ 11,832	$ 11,775	$ 25,705	$ 24,730
Amount allocated to participating securities	(11)	(44)	(53)	(108)
Net income available for basic common shares and basic earnings per share	$ 11,821	$ 11,731	$ 25,652	$ 24,622
Basic	14,615	15,249	14,614	15,387
Basic	$ 0.81	$ 0.77	$ 1.76	$ 1.60
Diluted Earnings per Share:
Net income	$ 11,832	$ 11,775	$ 25,705	$ 24,730
Amount allocated to participating securities	(11)	(44)	(53)	(108)
Adjustment for dilutive potential common shares	0	0	1	0
Net income available for diluted common shares and diluted earnings per share	$ 11,821	$ 11,731	$ 25,653	$ 24,622
Adjustment for dilutive potential common shares	121	118	350	59
Net income available for diluted common shares and diluted earnings per share, Shares	14,736	15,367	14,964	15,446
Diluted	$ 0.80	$ 0.76	$ 1.71	$ 1.59