Restructuring and Other Charges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Restructuring Cost and Reserve [Line Items]
Beginning balance			$ 6,210
Restructuring and other charges, net	$ (498)	$ (26)	3,861	$ 370
Cash payments			(6,260)
Effect of foreign currency translation			(57)
Ending balance	3,754		3,754
Employee Severance and Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance			4,462
Cash payments			(5,832)
Effect of foreign currency translation			(16)
Ending balance	1,917		1,917
Excess Facilities [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance			1,267
Cash payments			(428)
Effect of foreign currency translation			(41)
Ending balance	1,356		1,356
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			3,862
Ending balance	$ 1,600		1,600
2015 Restructuring Plan [Member] | Employee Severance and Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			3,862
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			(1)
Prior restructuring plans [Member] | Employee Severance and Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			(559)
Prior restructuring plans [Member] | Excess Facilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			558
Prior restructuring plans [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges, net			$ 0