Investments - Schedule of Commercial Loan Participations, Allowance for Credit Loss (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses beginning balance	$ 5,826	$ 2,928	$ 3,672	$ 1,789
Provision (reversal) for credit losses	1,376	60	3,530	1,199
Allowance for credit losses ending balance	$ 7,202	$ 2,988	$ 7,202	$ 2,988

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant