Pension and Other Postretirement Benefit Plans (Net periodic pension cost (income) and other amounts recognized in other comprehensive income (loss) before taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Components of net periodic pension cost:
Net periodic pension cost	$ 412	$ 319	$ 20
Foreign Plan [Member]
Components of net periodic pension cost:
Service cost	958	846	831
Interest cost	332	697	504
Expected return on plan assets	(1,551)	(1,784)	(1,539)
Prior service cost amortization	136	140	44
Deferred loss amortization	45	0	180
Settlement cost	492	420	0
Net periodic pension cost	412	319	20
Other amounts recognized in other comprehensive income (loss) before income taxes are as follows:
Prior service cost amortization	(136)	(140)	(44)
Loss (gain) on value of plan assets	1,131	(1,695)	(2,977)
Actuarial (gain) loss on benefit obligation	1,262	4,975	(405)
Actuarial (gain) loss on benefit obligation	83	0	978
Settlement	(492)	(420)	0
Deferred loss amortization	(45)	0	(180)
Total recognized in other comprehensive income (loss), before taxes	1,803	2,720	(2,628)
Total recognized in net periodic pension cost and other comprehensive income (loss), before taxes	$ 2,215	$ 3,039	$ (2,608)