Investments - Schedule of Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Investments
Investments	$ 1,129,435	$ 1,106,786
Corporate loans | Variable Interest Entity, Primary Beneficiary
Investments
Investments	129,170	119,731
Equity securities | Variable Interest Entity, Primary Beneficiary
Investments
Investments	1,140	949
Asset Management
Investments
Investments	26,519	29,298
Asset Management | Consolidated Entity, Excluding Consolidated VIE
Investments
Investments	26,519	29,298
Asset Management | Corporate loans
Investments
Investments	13,291	13,287
Asset Management | Equity securities
Investments
Investments	7,929	10,409
Asset Management | Equity method
Investments
Investments	5,228	5,517
Asset Management | Derivatives
Investments
Investments	0	13
Asset Management | Other invested assets
Investments
Investments	71	72
Insurance Solutions | Variable Interest Entity, Primary Beneficiary
Investments
Investments	130,310	120,680
Insurance Solutions | Consolidated Balance Including Variable Interest Entity
Investments
Investments	1,102,916	1,077,488
Insurance Solutions | Consolidated Entity, Excluding Consolidated VIE
Investments
Investments	972,606	956,808
Insurance Solutions | Corporate loans
Investments
Investments	140,780	124,067
Insurance Solutions | Debt securities
Investments
Investments	616,479	632,038
Insurance Solutions | Mortgage loans
Investments
Investments	177,032	162,566
Insurance Solutions | Equity securities
Investments
Investments	7,544	15,053
Insurance Solutions | Other invested assets
Investments
Investments	$ 30,771	$ 23,084