Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Basic Earnings per Share:
Net income	$ 13,873	$ 12,955
Amount allocated to participating securities	(44)	(65)
Net income available for basic common shares and basic earnings per share	$ 13,829	$ 12,890
Basic	14,612	15,526
Basic	$ 0.95	$ 0.83
Diluted Earnings per Share:
Net income	$ 13,873	$ 12,955
Amount allocated to participating securities	(44)	(65)
Adjustment for dilutive potential common shares	1	0
Net income available for diluted common shares and diluted earnings per share	$ 13,830	$ 12,890
Adjustment for dilutive potential common shares	580	2
Net income available for diluted common shares and diluted earnings per share, Shares	15,192	15,528
Diluted	$ 0.91	$ 0.83