Investments - Schedule of Commercial Mortgage Loan Participations Recorded Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	$ 426,174	$ 396,088
Carrying value, gross	432,905	403,732
Less allowance for credit losses	$ (6,731)	$ (7,644)	$ (4,546)	$ (3,672)
% of Gross Total	100.00%	100.00%
Less than 70%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, gross	$ 382,520	$ 349,868
% of Gross Total	88.00%	87.00%
70% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, gross	$ 0	$ 0
% of Gross Total	0.00%	0.00%
81% to 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, gross	$ 0	$ 0
% of Gross Total	0.00%	0.00%
Greater than 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value, gross	$ 50,385	$ 53,864
% of Gross Total	12.00%	13.00%
Less Than 1.00x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	$ 79,288	$ 104,643
Less Than 1.00x | Less than 70%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	66,631	88,507
Less Than 1.00x | 70% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	0	0
Less Than 1.00x | 81% to 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	0	0
Less Than 1.00x | Greater than 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	12,657	16,136
1.00x—1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	84,704	102,222
1.00x—1.20x | Less than 70%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	46,976	64,494
1.00x—1.20x | 70% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	0	0
1.00x—1.20x | 81% to 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	0	0
1.00x—1.20x | Greater than 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	37,728	37,728
Greater Than 1.20x
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	268,913	196,867
Greater Than 1.20x | Less than 70%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	268,913	196,867
Greater Than 1.20x | 70% to 80%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	0	0
Greater Than 1.20x | 81% to 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	0	0
Greater Than 1.20x | Greater than 90%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total, net of allowance for credit losses	$ 0	$ 0