Pension and Post-Retirement Benefits (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
US Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 315	$ 0	$ 315	$ 29
Expected administrative expenses	730	0	730	0
Interest cost	2,191	487	1,553	1,519
Expected return on plan assets	(3,800)	(712)	(5,260)	(2,237)
Amortization of net loss	338	333	978	942
Net periodic benefit (income) cost	(226)	108	(1,684)	253
Non-US Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	318	416	777	1,248
Expected administrative expenses	0	0	0	0
Interest cost	622	528	1,763	1,585
Expected return on plan assets	(50)	0	(50)	0
Amortization of net loss	0	263	0	789
Net periodic benefit (income) cost	890	1,207	2,490	3,622
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	72	6	81	17
Interest cost	250	149	540	448
Amortization of net loss	31	96	94	288
Net periodic benefit (income) cost	353	$ 251	715	$ 753
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1		1
Interest cost	3		3
Amortization of net loss	0		0
Net periodic benefit (income) cost	$ 4		$ 4