CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Net loss	$ (2,913)	$ (31,500)	$ (16,607)	$ (55,527)
Other comprehensive income (loss) before tax:
Unrealized loss arising during the period	0	(114)	0	(613)
Change in foreign currency translation adjustments	(4,758)	3,994	(3,024)	4,883
Other comprehensive income before tax	(4,758)	3,880	(3,024)	4,270
Less: Provision for income taxes	369	0	369	2
Other comprehensive income, net of tax	(5,127)	3,880	(3,393)	4,268
Total comprehensive loss	$ (8,040)	$ (27,620)	$ (20,000)	$ (51,259)