Policy Claims and Other Benefits Payable - Schedule of Liability For Policy Claims and Other Benefits Payable (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Roll Forward In Liability For Unpaid Claims And Claims Adjustment Expense [Abstract]
Policy claims and other benefits payable, beginning of period		$ 519,711	$ 339,954
Reinsured policy claims and other benefits payable, beginning of period		545,857	388,797
Net balance, beginning of period		(26,146)	(48,843)
Incurred related to current year		73,626	53,828
Incurred related to prior years	[1]	(1,534)	(5,045)
Total incurred		72,092	48,783
Claims paid related to current year, net of reinsured policy claims received		(194,270)	(123,305)
Reinsured policy claims received related to prior years, net of claims paid		36,508	59,269
Total paid		(157,762)	(64,036)
Foreign currency translation		87	(518)
Net balance, end of period		(111,729)	(64,614)
Reinsured policy claims and other benefits payable, end of period		638,383	395,103
Policy claims and other benefits payable, end of period		$ 526,654	$ 330,489

[1] Includes the difference between our estimate of claims incurred but not yet reported as of period-end and the actual incurred claims reported after period-end.