Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Net income	$ 30,426	$ 35,855	$ 57,206	$ 62,702
Other comprehensive income (loss):
Unrealized holding (losses) gains on available-for-sale investments, net of tax benefit (expense) of $439, ($137), $408 and ($37)	(741)	66	(799)	248
Foreign currency translation losses	(285)	(268)	(510)	(64)
Other comprehensive (loss) income	(1,026)	(202)	(1,309)	184
Comprehensive income	$ 29,400	$ 35,653	$ 55,897	$ 62,886