Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (49,498)	$ (2,138)
Components of other comprehensive income (loss):
Translation adjustment	(2)	(775)
Net change in derivatives	147	1,688
Net gain (loss) on long-term pension liability obligation	0	(49)
Provision for income taxes	(47)	(141)
Total other comprehensive income	98	723
Total comprehensive loss	(49,400)	(1,415)
Comprehensive loss attributable to noncontrolling interests	1,113	707
Comprehensive loss attributable to stockholders	$ (48,287)	$ (708)