Accumulated Other Comprehensive Income Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
AOCI, Debt Securities, Available-for-sale, Adjustment, after Tax	$ 433		$ (275)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	(54,901)		(46,187)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(54,468)		$ (46,462)
Unrealized gain (loss) on available-for-sale investments, net of tax (benefit)	708
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	(8,714)
Other Comprehensive Income Loss Arising During Period Total Net of Tax	(8,006)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	708	$ 560
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(8,714)	491
Other Comprehensive Income (Loss), Net of Tax	$ (8,006)	$ 1,051