Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance at Beginning of period	$ (2,652)	$ 1,786
Other comprehensive income before reclassifications	(4,646)	(4,228)
Amounts reclassified from accumulated other comprehensive income	824	(210)
Other comprehensive income, net	(3,822)	(4,438)
Ending balance at End of period	(6,474)	(2,652)
Foreign Currency Translation Adjustments [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance at Beginning of period	(219)	3,562
Other comprehensive income before reclassifications	(5,739)	(3,781)
Amounts reclassified from accumulated other comprehensive income	0	0
Other comprehensive income, net	(5,739)	(3,781)
Ending balance at End of period	(5,958)	(219)
Unrecognized Pension and Postretirement Benefit Costs (Credit) [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance at Beginning of period	(2,433)	(1,776)
Other comprehensive income before reclassifications	1,093	(447)
Amounts reclassified from accumulated other comprehensive income	824	(210)
Other comprehensive income, net	1,917	(657)
Ending balance at End of period	$ (516)	$ (2,433)