Restructuring and Other Charges (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014
Restructuring Cost and Reserve [Line Items]
Beginning balance			$ 6,210
Restructuring and other charges, net	$ 303	$ 11,027	4,164	$ 11,397
Cash payments			(8,235)
Effect of foreign currency translation			(72)
Ending balance	2,067		2,067
Employee Severance and Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance			4,462
Cash payments			(6,841)
Effect of foreign currency translation			(20)
Ending balance	1,120		1,120
Excess Facilities [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance			1,267
Cash payments			(1,394)
Effect of foreign currency translation			(52)
Ending balance	466		466
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance			481
Cash payments			0
Effect of foreign currency translation			0
Ending balance	481		481
2015 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			4,080
Ending balance	$ 900		900
2015 Restructuring Plan [Member] | Employee Severance and Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			4,080
2015 Restructuring Plan [Member] | Excess Facilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			0
2015 Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			0
Prior restructuring plans [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			84
Prior restructuring plans [Member] | Employee Severance and Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			(561)
Prior restructuring plans [Member] | Excess Facilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			645
Prior restructuring plans [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			$ 0