Investments - Schedule of Finance Receivable Allowance Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Asset Management
Financing Receivable, Allowance for Credit Loss
Beginning balance	$ 295	$ 299	$ 299	$ 299
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses	0	0	(4)	0
Ending balance	295	299	295	299
Insurance Solutions
Financing Receivable, Allowance for Credit Loss
Beginning balance	6,444	7,013	10,982	7,053
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses	1,406	217	(3,132)	177
Ending balance	7,850	7,230	7,850	7,230
Insurance Solutions \| Commercial real estate mortgage loans
Financing Receivable, Allowance for Credit Loss
Beginning balance	953	2,616	2,355	2,615
Provision for credit losses	93	1	(1,309)	2
Ending balance	1,046	2,617	1,046	2,617
Insurance Solutions \| Multi-family mortgage loans
Financing Receivable, Allowance for Credit Loss
Beginning balance	4,676	3,349	7,681	3,360
Provision for credit losses	1,335	252	(1,670)	241
Ending balance	6,011	3,601	6,011	3,601
Insurance Solutions \| Corporate loans
Financing Receivable, Allowance for Credit Loss
Beginning balance	815	1,048	946	1,078
Provision for credit losses	(22)	(36)	(153)	(66)
Ending balance	$ 793	$ 1,012	$ 793	$ 1,012

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

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- Definition

Amount of increase in allowance for credit loss on financing receivable from recovery.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of writeoff of financing receivable, charged against allowance for credit loss.

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- Definition

Amount of credit loss expense (reversal of expense) for financing receivable.

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