Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ 12,938	$ (22,156)
Other comprehensive loss, net of tax:
Net unrealized losses on fixed income securities	(9,081)	(20,861)
Foreign currency translation adjustments	88	(687)
Other comprehensive loss	(8,993)	(21,548)
Comprehensive income (loss)	$ 3,945	$ (43,704)