Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (113,403)	$ 26,120	$ (231,722)	$ 43,496
Cash flow hedges:
Change in unrealized gain (loss) on cash flow hedges, net of tax benefit (expense) of $192, $155, ($7) and $(1,315), respectively	(6,793)	(221)	(20,582)	2,784
Less: reclassification for realized net gains included in net income, net of tax expense (benefit) of $-, $-, $7 and $509, respectively	6,617	(2,850)	8,264	(4,828)
Net change, net of tax	(176)	(3,071)	(12,318)	(2,044)
Change in foreign currency translation adjustment	0	(39)	314	(199)
Change in unrealized loss on available-for-sale investments, net of tax	48	(164)	133	(38)
Less reclassification for realized net gains	0	0	(12)	0
Other comprehensive income (loss)	48	(164)	121	(38)
Comprehensive income (loss)	$ (113,531)	$ 22,846	$ (243,605)	$ 41,215