Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		$ (16,456)	$ (6,342)	$ (9,749)
Other comprehensive income (loss)		(3,249)	(10,488)	2,686
Amounts reclassified from other comprehensive income (loss)	[1]	875	374	721
Ending Balance		(18,830)	(16,456)	(6,342)
Cumulative translation adjustment
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(5,615)	1,353	1,299
Other comprehensive income (loss)		(4,083)	(6,968)	54
Ending Balance		(9,698)	(5,615)	1,353
Pension liability
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		(10,841)	(7,695)	(11,048)
Other comprehensive income (loss)		834	(3,520)	2,632
Amounts reclassified from other comprehensive income (loss)	[1]	875	374	721
Ending Balance		$ (9,132)	$ (10,841)	$ (7,695)

[1] The amounts reclassified from other comprehensive income (loss) were included in selling, general and administrative expenses in the consolidated statements of operations.