Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Net income	$ 35,925	$ 30,426	$ 63,563	$ 57,206
Other comprehensive income (loss):
Unrealized holding gains (losses) on available-for-sale investments, net of tax benefit (expense) of ($125), $439, ($65) and $408	119	(741)	229	(799)
Foreign currency translation (losses) gains	175	(285)	(257)	(510)
Other comprehensive (loss) income	294	(1,026)	(28)	(1,309)
Comprehensive income	$ 36,219	$ 29,400	$ 63,535	$ 55,897