Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Income Statement [Abstract]
Net sales	$ 266,351	$ 270,471	$ 740,480	$ 766,746
Cost of sales	183,852	182,923	509,984	516,268
Gross profit	82,499	87,548	230,496	250,478
Selling and administrative expense	77,680	77,358	225,824	226,190
Operating income	4,819	10,190	4,672	24,288
Interest expense	860	447	2,309	1,095
Income before income taxes	3,959	9,743	2,363	23,193
Income taxes	844	3,793	805	9,139
Net income	$ 3,115	$ 5,950	$ 1,558	$ 14,054
Earnings per share:
Basic	$ 0.15	$ 0.28	$ 0.07	$ 0.65
Diluted	0.15	0.28	0.07	0.65
Dividends per share	$ 0.15	$ 0.15	$ 0.45	$ 0.45
Weighted-average shares of common stock outstanding:
Basic	20,990	21,324	20,972	21,584
Diluted	21,000	21,355	21,021	21,752