Accumulated Other Comprehensive Income (Loss) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (7,255)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	721
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	120
Ending Balance	(6,414)
Accumulated Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,230)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	721
Ending Balance	(1,509)
Accumulated Postretirement Transactions [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(5,025)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	120
Ending Balance	$ (4,905)