General - Allowance for Credit Losses on Premium Receivables (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Beginning balance	$ 5,800	$ 6,000
Provision during the period for expected credit losses	1,136	1,170
Write-off amounts during the period	(1,270)	(1,319)
Recoveries during the period of amounts previously written off	134	149
Ending balance	$ 5,800	$ 6,000