v3.26.1
Commitments, Contingencies and Guarantees - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Nov. 26, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Aug. 12, 2025
May 27, 2025
Apr. 30, 2024
Gain Contingencies [Line Items]                  
Net premiums earned   $ 3,474 $ 2,422 $ 6,631 $ 2,422        
Guarantees provided to lenders on behalf of real estate joint venture   70,739   70,739   $ 73,170      
Contingent consideration   0   0   0      
Change in fair value of earn out liability   $ 0 2,679 $ 0 2,679        
Lessee, operating lease, term of contract                 10 years
Operating lease, weighted average discount rate   7.20%   7.20%          
Operating lease, liability   $ 1,945   $ 1,945   $ 2,054      
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]   Accrued expenses and other liabilities (includes $25,163 and $16,443 from related parties in 2026 and 2025, respectively)   Accrued expenses and other liabilities (includes $25,163 and $16,443 from related parties in 2026 and 2025, respectively)   Accrued expenses and other liabilities (includes $25,163 and $16,443 from related parties in 2026 and 2025, respectively)      
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]   Other assets   Other assets   Other assets      
Operating lease, right-of-use asset   $ 1,915   $ 1,915   $ 2,029      
Operating lease, weighted average remaining lease term   7 years 9 months 18 days   7 years 9 months 18 days          
Leasing expense   $ 155 91 $ 284 151        
Percentage of outstanding debt holders in lawsuit (at least)             25.00%    
GLS to RPP                  
Gain Contingencies [Line Items]                  
Reinsurance receivable   5,253   5,253          
Loss contingency, loss in period $ 10,805                
Maximum exposure to loss   28,230   $ 28,230          
Minimum                  
Gain Contingencies [Line Items]                  
Lease payments to escalating fee, percentage       3.00%          
Maximum                  
Gain Contingencies [Line Items]                  
Lease payments to escalating fee, percentage       4.00%          
Asset Purchase Agreement                  
Gain Contingencies [Line Items]                  
Net present value of total distributions   11,923   $ 11,923   9,955      
Unrealized gains   (1,765) $ 0 (1,968) $ 0        
Kestrel Group, Ltd.                  
Gain Contingencies [Line Items]                  
Contingent consideration               $ 45,000  
Common shares issued or to be issued (in shares)               2,750,000  
Total unfunded commitments on alternative investments                  
Gain Contingencies [Line Items]                  
Unfunded commitments   $ 21,164   $ 21,164   $ 24,840      
Investment, Type [Extensible Enumeration]   Total unfunded commitments on alternative investments   Total unfunded commitments on alternative investments   Total unfunded commitments on alternative investments      
Gross Premiums Written | Segment Concentration Risk | AUM Reinsurance Segment                  
Gain Contingencies [Line Items]                  
Concentration risk, percentage   85.80% 33.50% 82.00% 39.50%        
AUM Financial Services, Inc. | Quota Share Reinsurance Agreements                  
Gain Contingencies [Line Items]                  
Net premiums earned   $ 3,210 $ 182 $ 5,628 $ 534