Investments - Schedule of the Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Beginning balance			$ (190)	$ (245)
(Increase) in allowance for credit losses			(301)	(113)
Gains from recoveries of amounts previously written off			145	72
Ending balance	$ (346)	$ (286)	(346)	(286)
Net gains from recoveries (credit losses) on AFS securities	(50)	35	(156)	(41)
Obligations of state and political subdivisions
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Beginning balance			(3)	0
(Increase) in allowance for credit losses			0	(3)
Gains from recoveries of amounts previously written off			2	0
Ending balance	(1)	(3)	(1)	(3)
Corporate securities
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Beginning balance			(183)	(241)
(Increase) in allowance for credit losses			(287)	(109)
Gains from recoveries of amounts previously written off			139	70
Ending balance	(331)	(280)	(331)	(280)
Asset backed securities
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Beginning balance			(1)	0
(Increase) in allowance for credit losses			(14)	(1)
Gains from recoveries of amounts previously written off			1	0
Ending balance	(14)	(1)	(14)	(1)
Obligations of foreign governments
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Beginning balance			(3)	(4)
(Increase) in allowance for credit losses			0	0
Gains from recoveries of amounts previously written off			3	2
Ending balance	$ 0	$ (2)	$ 0	$ (2)