Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 102,247	$ 46,605	$ 238,905	$ 106,582
Unrealized (loss) gain on available-for-sale securities, net of deferred tax	(1,735)	125	1,679	99
Total comprehensive income	$ 100,512	$ 46,730	$ 240,584	$ 106,681