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Restructuring and Other Termination Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Restructuring Reserve [Roll Forward]
Beginning balance			$ 8,693
Restructuring and other credits	$ (222)	$ 13	(968)	$ (1,329)
Cash payments			(7,311)
Effect of foreign currency translation			(67)
Ending balance	347		347
Employee Severance and Benefits [Member]
Restructuring Reserve [Roll Forward]
Beginning balance			7,321
Restructuring and other credits			(1,379)
Cash payments			(5,715)
Effect of foreign currency translation			(67)
Ending balance	160		160
Excess Facilities [Member]
Restructuring Reserve [Roll Forward]
Beginning balance			1,372
Restructuring and other credits			411
Cash payments			(1,596)
Effect of foreign currency translation			0
Ending balance	$ 187		$ 187