Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 03, 2014	Dec. 28, 2012	Dec. 30, 2011
Net income	$ 38,640	$ 37,225	$ 32,695
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments, net of tax of $(187), $(184), and $(8), respectively	373	249	(72)
Unrealized (loss) gain arising during the period on investments, net of tax of $10, $19, and $(36), respectively	(14)	(28)	52
Comprehensive income	$ 38,999	$ 37,446	$ 32,675