Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 20,945	$ 18,304	$ 10,686	$ 7,289
Other comprehensive income, net of tax
Foreign currency translation adjustment, net of tax	(113)	(32)	5	9
Total comprehensive income	$ 20,832	$ 18,272	$ 10,691	$ 7,298