Unpaid Claims - Schedule of Activity in the Liability for Unpaid Claims and Claims Adjustment Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Gross and net balance, beginning of period	$ 137,395	$ 136,317
Incurred related to:
Current year	996,158	1,023,355
Prior years	(9,000)	(39,324)
Total incurred	987,158	984,031
Paid related to:
Current year	865,930	892,495
Prior years	121,523	90,458
Total paid	987,453	982,953
Gross and net balance, end of period	137,100	137,395
Claims Development [Line Items]
Unpaid claims	137,100	137,395
Non-Insurance
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Gross and net balance, beginning of period	6,100
Paid related to:
Gross and net balance, end of period	2,900	6,100
Claims Development [Line Items]
Unpaid claims	$ 2,900	$ 6,100