Restructuring and Other Charges (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 12,024
Restructuring and other charges (credits)	(689)	$ (1,991)
Cash payments	(8,248)
Effect of foreign currency translation	41
Ending balance	3,128
Employee Severance and Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	11,176
Restructuring and other charges (credits)	(687)
Cash payments	(7,986)
Effect of foreign currency translation	34
Ending balance	2,537
Excess Facilities [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	848
Restructuring and other charges (credits)	(2)
Cash payments	(262)
Effect of foreign currency translation	7
Ending balance	$ 591