CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Apr. 01, 2016
Net loss	$ (24,027)	$ (25,180)
Other comprehensive income (loss) before tax:
Unrealized gain arising during the period	0	323
Loss reclassified into earnings	0	78
Change in unrealized gain on cash flow hedges:	0	401
Unrealized gains (losses) arising during the period	(499)	79
Loss reclassified into earnings	0	1,476
Change in unrealized gains (losses) on available-for-sale securities:	(499)	1,555
Change in foreign currency translation adjustments	889	1,934
Other comprehensive income before tax	390	3,890
Less: Provision for income taxes	2	18
Other comprehensive income, net of tax	388	3,872
Total comprehensive loss	$ (23,639)	$ (21,308)