Goodwill and Intangible Assets - Changes in Intangible Assets, Net of Accumulated Amortization (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Finite-lived Intangible Assets [Roll Forward]
Net balance at January 1	$ 90,068
Amortization expense	(1,973)
Currency translation	(1,403)
Net balance at March 31	$ 86,692