Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015
Income Statement [Abstract]
Net revenues	$ 251,599	$ 253,177	$ 382,004	$ 380,244
Cost of goods sold	162,369	162,417	259,869	262,502
Gross profit	89,230	90,760	122,135	117,742
Selling, general and administrative expense	52,718	53,492	100,761	98,467
Income from operations	36,512	37,268	21,374	19,275
Interest expense	116	120	221	232
Income before income taxes	36,396	37,148	21,153	19,043
Provision for income taxes	14,812	16,203	8,682	8,357
Net income	$ 21,584	$ 20,945	$ 12,471	$ 10,686
Net income per common and common equivalent share:
Basic	$ 0.87	$ 0.85	$ 0.50	$ 0.44
Diluted	$ 0.86	$ 0.85	$ 0.50	$ 0.43
Weighted average common and common equivalent shares outstanding:
Basic	24,884	24,617	24,825	24,551
Diluted	24,958	24,684	24,910	24,705