Unaudited Condensed Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Net income	$ 14,457	$ 23,791	$ 43,785	$ 70,460
Other comprehensive loss, before tax:
Unrealized loss on derivative instruments	(215)	(303)	(146)	(187)
Unrealized gain (loss) on available-for-sale securities	26	23	(15)	(12)
Total other comprehensive loss, before tax	(189)	(280)	(161)	(199)
Tax (expense) benefit related to items of other comprehensive income	(10)	(7)	6	5
Other comprehensive loss, net of tax	(199)	(287)	(155)	(194)
Comprehensive income	$ 14,258	$ 23,504	$ 43,630	$ 70,266