CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015
Net loss	$ (16,012)	$ (4,811)	$ (61,871)	$ (8,462)
Other comprehensive income (loss) before tax:
Unrealized gains (losses) arising during the period	121	(550)	279	(218)
Losses (gains) reclassified into earnings	(47)	(127)	53	(314)
Change in unrealized gains (losses) on cash flow hedges:	74	(677)	332	(532)
Unrealized gains (losses) arising during the period	(1,208)	(928)	(1,178)	17
Loss reclassified into earnings	1,259	0	2,735	0
Change in unrealized gains (losses) on available-for-sale securities:	51	(928)	1,557	17
Change in foreign currency translation adjustments	523	(364)	(154)	(766)
Other comprehensive income (loss) before tax	648	(1,969)	1,735	(1,281)
Less: Provision for (benefit from) income taxes	(3)	12	20	6
Other comprehensive income (loss), net of tax	651	(1,981)	1,715	(1,287)
Total comprehensive losses	$ (15,361)	$ (6,792)	$ (60,156)	$ (9,749)