Restructuring and Other Charges Schedule of Restructuring and Other Charges (Details) $ in Thousands	9 Months Ended
	Oct. 01, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Beginning Balance	$ 1,408
Additions to restructuring	78
Payments for Restructuring	(302)
Restructuring Reserve, Accrual Adjustment	0
Restructuring Ending Balance	1,184
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Beginning Balance	6
Additions to restructuring	0
Payments for Restructuring	0
Restructuring Reserve, Accrual Adjustment	0
Restructuring Ending Balance	6
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Beginning Balance	1,402
Additions to restructuring	78
Payments for Restructuring	(302)
Restructuring Reserve, Accrual Adjustment	0
Restructuring Ending Balance	$ 1,178