Changes in Accumulated Other Comprehensive Income - Schedule of Changes in AOCI(L) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Defined benefit pension, balance January 1	$ (8,796)	$ 1,607
Foreign currency translation, balance January 1	1,044	(2,404)
Total, balance January 1	(7,752)	(797)
Other comprehensive income (loss) before reclassifications, defined benefit plan	0	0
Total, other comprehensive income (loss) before reclassifications	14,432	3,448
Defined benefit pension, amounts reclassified from accumulated other comprehensive income (loss)	(423)	(10,403)
Foreign currency translation, amounts reclassified from accumulated other comprehensive income (loss)	0	0
Pension and other postretirement benefit plans, tax	0	1,112	$ (1,112)
Total, amounts reclassified from accumulated other comprehensive income (loss)	(423)	(10,403)
Defined benefit pension, other comprehensive income (loss)	(423)	(10,403)	6,936
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	14,432	3,448
Total, other comprehensive income (loss)	14,009	(6,955)
Defined benefit pension, balance December 31	(9,219)	(8,796)	1,607
Foreign currency translation, balance December 31	15,476	1,044	(2,404)
Total, balance December 31	$ 6,257	$ (7,752)	$ (797)