Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Income Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance as of January 1, 2016			$ (41,453)
Other comprehensive gain	$ (2,824)	$ (466)	9,837	$ (6,768)
Balance as of June 30, 2016	(31,616)		(31,616)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance as of January 1, 2016			(44,936)
Other comprehensive gain			5,925
Balance as of June 30, 2016	(39,011)		(39,011)
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			3,912
Balance as of June 30, 2016	$ 7,395		$ 7,395