Unaudited Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Net revenue	$ 320,655	$ 291,240	$ 646,275	$ 570,063
Cost of revenue	226,017	200,863	451,788	391,900
Gross profit	94,638	90,377	194,487	178,163
Operating expenses:
Research and development	14,757	11,350	28,878	22,364
Sales and marketing	37,677	39,036	76,647	75,684
General and administrative	11,219	10,548	21,632	20,193
Restructuring and other changes	0	2,094	0	2,094
Litigation reserves, net	0	(225)	151	(278)
Total operating expenses	63,653	62,803	127,308	120,057
Income from operations	30,985	27,574	67,179	58,106
Interest income	116	106	235	235
Other income (expense), net	354	(341)	(247)	(671)
Income before income taxes	31,455	27,339	67,167	57,670
Provision for income taxes	9,933	6,742	20,498	15,884
Net income	$ 21,522	$ 20,597	$ 46,669	$ 41,786
Net income per share:
Basic (in dollars per share)	$ 0.57	$ 0.56	$ 1.23	$ 1.14
Diluted (in dollars per share)	$ 0.56	$ 0.54	$ 1.21	$ 1.11
Weighted average shares outstanding used to compute net income per share:
Basic (in shares)	37,978	37,017	37,886	36,712
Diluted (in shares)	38,595	37,968	38,612	37,680