Investments - Schedule of Changes to Allowance for Credit Losses (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 765	$ 814
Current period change in provision for expected credit losses	(85)	138
Write-offs charged	0	(137)
Recoveries	0	0
Balance at ending of period	$ 680	$ 815