Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014
Income Statement [Abstract]
Net revenues	$ 194,375	$ 196,510	$ 574,620	$ 546,331
Cost of goods sold	138,115	138,124	400,618	380,744
Gross profit	56,260	58,386	174,002	165,587
Selling, general and administrative expense	47,576	48,511	146,044	142,267
Income from operations	8,684	9,875	27,958	23,320
Interest expense	107	99	338	322
Income before income taxes	8,577	9,776	27,620	22,998
Provision for income taxes	3,685	4,839	12,041	10,772
Net income	$ 4,892	$ 4,937	$ 15,579	$ 12,226
Net income per common and common equivalent share:
Basic	$ 0.20	$ 0.20	$ 0.63	$ 0.51
Diluted	$ 0.20	$ 0.20	$ 0.63	$ 0.50
Weighted average common and common equivalent shares outstanding:
Basic	24,694	24,323	24,599	24,202
Diluted	24,718	24,341	24,709	24,393