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Restructuring Charges - Schedule of Restructuring Reserve by Type of Cost(Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2020	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 875	$ 251	$ 14,798	$ 0	$ 15,924	$ 0	$ 0
One-time Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges					10,159
Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges					5,207
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges					558
Accrued Liabilities [Member]
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019				0	0
Restructuring charges					17,185
Cash payments					(9,597)
Non-cash restructuring charges					(4,163)
Restructuring adjustments					(1,261)
Foreign exchange rate changes					225
Balance as of December 31, 2020	2,389				2,389	0
Accrued Liabilities [Member] \| One-time Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019				0	0
Restructuring charges					11,329
Cash payments					(8,717)
Non-cash restructuring charges					0
Restructuring adjustments					(1,170)
Foreign exchange rate changes					182
Balance as of December 31, 2020	1,624				1,624	0
Accrued Liabilities [Member] \| Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019				0	0
Restructuring charges					5,220
Cash payments					(317)
Non-cash restructuring charges					(4,163)
Restructuring adjustments					(13)
Foreign exchange rate changes					23
Balance as of December 31, 2020	750				750	0
Accrued Liabilities [Member] \| Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019				$ 0	0
Restructuring charges					636
Cash payments					(563)
Non-cash restructuring charges					0
Restructuring adjustments					(78)
Foreign exchange rate changes					20
Balance as of December 31, 2020	$ 15				$ 15	$ 0