Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Income Statement [Abstract]
Net revenues	$ 193,362	$ 191,924	$ 544,356	$ 556,964
Cost of goods sold	138,512	131,628	382,002	381,315
Gross profit	54,850	60,296	162,354	175,649
Selling, general and administrative expense	41,725	43,121	126,403	130,439
Restructuring costs	7	4	3	159
Income from operations	13,118	17,171	35,948	45,051
Interest expense	104	217	327	661
Income before income taxes	13,014	16,954	35,621	44,390
Provision for income taxes	6,677	6,682	15,956	17,749
Net income	$ 6,337	$ 10,272	$ 19,665	$ 26,641
Net income per common and common equivalent share:
Basic	$ 0.26	$ 0.44	$ 0.81	$ 1.15
Diluted	$ 0.26	$ 0.43	$ 0.80	$ 1.12
Weighted average common and common equivalent shares outstanding:
Basic	24,383	23,383	24,193	23,215
Diluted	24,641	23,813	24,531	23,706