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Restructuring and Other Termination Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Restructuring Reserve [Roll Forward]
Beginning balance			$ 8,693
Restructuring and other credits	$ (469)	$ (275)	(746)	$ (1,342)
Cash payments			(6,654)
Effect of foreign currency translation			(68)
Ending balance	1,225		1,225
Employee Severance and Benefits [Member]
Restructuring Reserve [Roll Forward]
Beginning balance			7,321
Restructuring and other credits			(1,135)
Cash payments			(5,340)
Effect of foreign currency translation			(67)
Ending balance	779		779
Excess Facilities [Member]
Restructuring Reserve [Roll Forward]
Beginning balance			1,372
Restructuring and other credits			389
Cash payments			(1,314)
Effect of foreign currency translation			(1)
Ending balance	$ 446		$ 446