General - Allowance for Credit Losses on Premium Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Beginning balance	$ 6,000	$ 6,000	$ 6,000	$ 10,000
Provision during the period for expected credit losses	1,153	694	3,330	(1,837)
Write-off amounts during the period	(1,311)	(838)	(3,798)	(2,610)
Recoveries during the period of amounts previously written off	158	144	468	447
Ending balance	$ 6,000	$ 6,000	$ 6,000	$ 6,000