Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Condensed Consolidated Statements of Comprehensive Income
Net income	$ 7,575	$ 14,279	$ 13,953	$ 22,389
Net changes to available-for-sale securities
Unrealized gains (losses) arising during the period	(312)	59	(332)	472
Reclassification for gains included in net income			10
Net changes to cash flow hedges
Unrealized gains (losses) arising during the period	50	(486)	(576)	(627)
Reclassification for losses included in net income	81	143	211	286
Other comprehensive income (loss), before tax	(181)	(284)	(687)	131
Provision (benefit) for income taxes	(63)	(99)	(240)	46
Other comprehensive income (loss)	(118)	(185)	(447)	85
Comprehensive income	$ 7,457	$ 14,094	$ 13,506	$ 22,474