Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2013
Finite-lived Intangible Assets [Roll Forward]
Intangible assets, net, beginning balance		$ 87,743
Purchase of intangible assets		3,197
Amortization expense	$ (1,886)	(8,850)	$ (11,291)	$ (7,975)
Changes in foreign currency exchange rates		936
Intangible assets, net, ending balance		$ 83,026	$ 87,743