General - Allowance for Credit Losses on Premium Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Beginning balance	$ 5,800	$ 6,000	$ 5,800	$ 6,000
Provision during the period for expected credit losses	332	1,007	1,468	2,177
Write-off amounts during the period	(877)	(1,168)	(2,147)	(2,487)
Recoveries during the period of amounts previously written off	145	161	279	310
Ending balance	$ 5,400	$ 6,000	$ 5,400	$ 6,000