Quarterly Results (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended																12 Months Ended
	Feb. 01, 2020		Nov. 02, 2019		Aug. 03, 2019		May 04, 2019		Feb. 02, 2019		Nov. 03, 2018		Aug. 04, 2018		May 05, 2018		Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 239,875		$ 274,645		$ 268,221		$ 253,810		$ 234,658		$ 269,181		$ 268,366		$ 257,445
Gross profit	69,900		84,734		82,095		75,140		66,666		81,218		83,781		77,327		$ 311,869	$ 308,992	$ 296,269
Operating income	4,777		18,150		15,674		15,608		1,497		16,016		14,931		17,316		54,209	49,760	37,701
Net income	$ 3,483		$ 13,726		$ 11,832		$ 13,873		$ 1,359		$ 12,046		$ 11,775		$ 12,955		$ 42,914	$ 38,135	$ 18,933
Net income per share – Basic	$ 0.25	[1]	$ 0.95	[1]	$ 0.81	[1]	$ 0.95	[1]	$ 0.09	[1]	$ 0.80	[1]	$ 0.77	[1]	$ 0.83	[1]	$ 2.97	$ 2.51	$ 1.15
Net income per share – Diluted	$ 0.24	[1]	$ 0.94	[1]	$ 0.80	[1]	$ 0.91	[1]	$ 0.09	[1]	$ 0.76	[1]	$ 0.76	[1]	$ 0.83	[1]	$ 2.92	$ 2.45	$ 1.15

[1] Per share amounts are computed independently for each of the quarters presented. The sum of the quarters may not equal the total year due to the impact of changes in weighted shares outstanding and differing applications of earnings under the two-class method.