Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 03, 2018	Oct. 28, 2017	Nov. 03, 2018	Oct. 28, 2017
Basic Earnings per Share:
Net income	$ 12,046	$ 10,697	$ 36,776	$ 22,824
Amount allocated to participating securities	(44)	(162)	(152)	(328)
Net income available for basic common shares and basic earnings per share	$ 12,002	$ 10,535	$ 36,624	$ 22,496
Net income available for basic common shares and basic earnings per share, Shares	15,071	15,957	15,282	16,287
Net income available for basic common shares and basic earnings per share, Per Share Amount	$ 0.80	$ 0.66	$ 2.40	$ 1.38
Diluted Earnings per Share:
Net income	$ 12,046	$ 10,697	$ 36,776	$ 22,824
Amount allocated to participating securities	(44)	(162)	(152)	(328)
Adjustment for dilutive potential common shares	$ 2	$ 0	$ 2	$ 0
Adjustment for dilutive potential common shares, Shares	741	9	262	6
Net income available for diluted common shares and diluted earnings per share	$ 12,004	$ 10,535	$ 36,626	$ 22,496
Net income available for diluted common shares and diluted earnings per share, Shares	15,812	15,966	15,544	16,293
Net income available for diluted common shares and diluted earnings per share, Per Share Amount	$ 0.76	$ 0.66	$ 2.36	$ 1.38