Pensions and Other Postretirement Benefit Plans (Schedule of (Gains)/Losses Recognized in Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
(Gains)/losses in plan assets and benefit obligations recognized in other comprehensive income:
Settlements/curtailments	$ (103)	$ (8,377)	$ (46)
Asset/liability loss/(gain)	700	14,707	(20,500)
Amortization of actuarial (loss)	(5,932)	(5,329)	(6,512)
Amortization of prior service (cost)/credit	$ 4,440	$ 4,436	3,905
Amortization of transition (obligation)			$ (70)
Pension Plans [Member]
(Gains)/losses in plan assets and benefit obligations recognized in other comprehensive income:
Settlements/curtailments	$ (103)
Asset/liability loss/(gain)	3,555
Amortization of actuarial (loss)	(2,594)
Amortization of prior service (cost)/credit	$ (48)
Amortization of transition (obligation)
Currency impact	$ (2,682)
Gain in other comprehensive income	(1,872)
Total cost/(benefit) recognized in net periodic benefit cost and other comprehensive income	$ 3,033
Other Postretirement Benefits [Member]
(Gains)/losses in plan assets and benefit obligations recognized in other comprehensive income:
Settlements/curtailments
Asset/liability loss/(gain)	$ (2,855)
Amortization of actuarial (loss)	(3,338)
Amortization of prior service (cost)/credit	$ 4,488
Amortization of transition (obligation)
Currency impact	$ (5)
Gain in other comprehensive income	(1,710)
Total cost/(benefit) recognized in net periodic benefit cost and other comprehensive income	$ (93)