Accumulated Other Comprehensive Income - Accumulated Other Comprehensive Income Roll Forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance, Unrealized Gains (Losses) on Investments	$ (1,418)	$ 0	$ 0
Beginning Balance, Foreign Currency Translation	(44,561)	(29,090)	(54,649)
Beginning Balance, Total	(45,979)	(29,090)	(54,649)
Other comprehensive income (loss) before reclassifications, Unrealized Gain (Losses) on Investments	1,143	(1,418)	0
Other comprehensive income (loss) before reclassifications, Foreign Currency Translation	(1,626)	(15,471)	25,559
Other comprehensive income (loss) before reclassifications, Total	(483)	(16,889)	25,559
Net increase (decrease) in other comprehensive income, Unrealized Gains (Losses) on Investments	1,143	(1,418)	0
Net increase (decrease) in other comprehensive income, Foreign Currency Translation	(1,626)	(15,471)	25,559
Net increase (decrease) in other comprehensive income, Total	(483)	(16,889)	25,559
Ending Balance, Unrealized Gains (Losses) on Investments	(275)	(1,418)	0
Ending Balance, Foreign Currency Translation	(46,187)	(44,561)	(29,090)
Ending Balance, Total	$ (46,462)	$ (45,979)	$ (29,090)