Investments - Schedule of Commercial Mortgage Loan Participations Recorded Investment (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	$ 396,088	$ 279,199
Carrying value	403,732	282,871
Less allowance for credit losses	$ (7,644)	$ (3,672)	$ (1,789)
Carrying value, net of valuation allowance, percent	100.00%	100.00%
Less than 70%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value	$ 349,868	$ 266,216
Carrying value, net of valuation allowance, percent	87.00%	94.00%
70% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value	$ 0	$ 0
Carrying value, net of valuation allowance, percent	0.00%	0.00%
81% to 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value	$ 0	$ 9,621
Carrying value, net of valuation allowance, percent	0.00%	3.00%
Greater than 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value	$ 53,864	$ 7,034
Carrying value, net of valuation allowance, percent	13.00%	3.00%
Less Than 1.00x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	$ 104,643	$ 42,593
Less Than 1.00x | Less than 70%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	88,507	27,091
Less Than 1.00x | 70% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	0	0
Less Than 1.00x | 81% to 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	0	8,468
Less Than 1.00x | Greater than 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	16,136	7,034
1.00x-1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	102,222	180,761
1.00x-1.20x | Less than 70%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	64,494	180,761
1.00x-1.20x | 70% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	0	0
1.00x-1.20x | 81% to 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	0	0
1.00x-1.20x | Greater than 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	37,728	0
Greater Than 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	196,867	59,517
Greater Than 1.20x | Less than 70%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	196,867	58,364
Greater Than 1.20x | 70% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	0	0
Greater Than 1.20x | 81% to 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	0	1,153
Greater Than 1.20x | Greater than 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, net of valuation allowance	$ 0	$ 0