Employee Benefit Plans (Components of Net Periodic Benefit Cost (Credit)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2017	Apr. 03, 2016
Foreign Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 2,000	$ 2,300
Defined Benefit Pension Benefits [Member]
Components of net periodic benefit cost (credit)
Service cost	1,214	1,092
Interest cost	4,127	4,730
Expected return on plan assets	(6,500)	(6,188)
Amortization of prior service	(47)	(54)
Net periodic benefit cost (credit)	(1,206)	(420)
Postretirement Medical Benefits [Member]
Components of net periodic benefit cost (credit)
Service cost	23	25
Interest cost	31	36
Expected return on plan assets	(279)	(259)
Amortization of prior service	0	0
Net periodic benefit cost (credit)	$ (225)	$ (198)