Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016
Income Statement [Abstract]
Net sales	$ 270,471	$ 279,015	$ 766,746	$ 754,952
Cost of sales	182,923	189,126	516,268	517,841
Gross profit	87,548	89,889	250,478	237,111
Selling and administrative expense	77,358	76,296	226,190	219,774
Operating income	10,190	13,593	24,288	17,337
Interest expense	447	323	1,095	1,204
Income before income taxes	9,743	13,270	23,193	16,133
Income taxes	3,793	5,083	9,139	6,941
Net income	$ 5,950	$ 8,187	$ 14,054	$ 9,192
Earnings per share:
Basic	$ 0.28	$ 0.38	$ 0.65	$ 0.43
Diluted	0.28	0.38	0.65	0.42
Dividends per share	$ 0.15	$ 0.125	$ 0.45	$ 0.375
Weighted-average shares of common stock outstanding:
Basic	21,324	21,593	21,584	21,607
Diluted	21,355	21,732	21,752	21,790