Restructuring, Reorganization, Relocation and Severance - Second Quarter (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring, reorganization, relocation and severance	$ (21)	$ 2,228	$ (142)	$ 3,559
Second Quarter 2014 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, reorganization, relocation and severance	(21)	5,949	(142)	5,949
Second Quarter 2014 Restructuring Plan [Member] | Inventory Write-offs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, reorganization, relocation and severance	0	755	0	755
Second Quarter 2014 Restructuring Plan [Member] | Acquisition Related Earn Out [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, reorganization, relocation and severance	0	2,500	0	2,500
Second Quarter 2014 Restructuring Plan [Member] | Impairment and Other Asset Write-off [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, reorganization, relocation and severance	0	466	0	466
Second Quarter 2014 Restructuring Plan [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, reorganization, relocation and severance	$ (21)	$ 2,228	$ (142)	$ 2,228