Investments - Schedule of Credit Risk (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Asset Management
Investments
Financing receivable, gross	$ 13,586	$ 13,586
Asset Management \| Level 1
Investments
Financing receivable, gross	$ 13,586	$ 13,586
Financing receivable concentration (as a percent)	100.00%	100.00%
Insurance Solutions
Investments
Financing receivable, gross	$ 206,970	$ 190,645
Insurance Solutions \| Level 1
Investments
Financing receivable, gross	$ 16,230	$ 18,043
Financing receivable concentration (as a percent)	7.80%	9.50%
Insurance Solutions \| Level 2
Investments
Financing receivable, gross	$ 155,991	$ 107,259
Financing receivable concentration (as a percent)	75.40%	56.30%
Insurance Solutions \| Level 3
Investments
Financing receivable, gross	$ 4,104	$ 8,120
Financing receivable concentration (as a percent)	2.00%	4.30%
Insurance Solutions \| Level 4
Investments
Financing receivable, gross	$ 0	$ 0
Financing receivable concentration (as a percent)	0.00%	0.00%
Insurance Solutions \| Level 5
Investments
Financing receivable, gross	$ 30,645	$ 57,223
Financing receivable concentration (as a percent)	14.80%	30.00%
Corporate loans \| Asset Management
Investments
Financing receivable, gross	$ 13,586	$ 13,586
Financing receivable concentration (as a percent)	100.00%	100.00%
Corporate loans \| Insurance Solutions
Investments
Financing receivable, gross	$ 17,782	$ 18,043
Financing receivable concentration (as a percent)	8.60%	9.50%
Commercial real estate mortgage loans \| Insurance Solutions
Investments
Financing receivable, gross	$ 75,863	$ 65,070
Financing receivable concentration (as a percent)	36.70%	34.10%
Multi-family mortgage loans \| Insurance Solutions
Investments
Financing receivable, gross	$ 113,325	$ 107,532
Financing receivable concentration (as a percent)	54.70%	56.40%