Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Net income	$ 146,009	$ 129,781	$ 113,007
Other comprehensive income (loss):
Unrealized holding (losses) gains on available-for-sale investments, net of tax benefit (expense) of $365, ($221) and ($9)	(664)	400	17
Foreign currency translation gains (losses)	(718)	243	(171)
Other comprehensive (loss) income	(1,382)	643	(154)
Comprehensive income	$ 144,627	$ 130,424	$ 112,853