Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Income Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance as of January 1, 2016	$ (41,453)
Other comprehensive gain	12,661	$ (6,302)
Balance as of March 31, 2016	(28,792)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance as of January 1, 2016	(44,936)
Other comprehensive gain	9,653
Balance as of March 31, 2016	(35,283)
Net Unrealized Gains on Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance as of January 1, 2016	3,483
Other comprehensive gain	3,008
Balance as of March 31, 2016	$ 6,491