Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Income Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance as of January 1, 2016			$ (41,453)
Other comprehensive gain	$ (1,846)	$ (9,140)	7,991	$ (15,908)
Balance as of September 30, 2016	(33,462)		(33,462)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance as of January 1, 2016			(44,936)
Other comprehensive gain			5,567
Balance as of September 30, 2016	(39,369)		(39,369)
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			2,424
Balance as of September 30, 2016	$ 5,907		$ 5,907