Pension (Amounts in Accumulated Other Comprehensive Loss to be Recognized During 2017) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	$ 5,952
Prior service cost (credit)	49
Total cost (credit)	6,001
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	5,409
Prior service cost (credit)	236
Total cost (credit)	5,645
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	543
Prior service cost (credit)	(187)
Total cost (credit)	$ 356