v3.26.3
Commercial Real Estate Loans - Schedule of Concentration of Credit Risk (Details) - Commercial real estate loans, held-for-investment, net
 9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Geographic concentration risk    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 100.00% 100.00%
Geographic concentration risk | California    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 10.80% 16.60%
Geographic concentration risk | North Carolina    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 10.80% 6.40%
Geographic concentration risk | United Kingdom    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 10.40% 2.90%
Geographic concentration risk | Florida    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 10.30% 10.90%
Geographic concentration risk | Texas    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 9.30% 12.00%
Geographic concentration risk | Washington D.C.    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 8.90% 5.20%
Geographic concentration risk | Minnesota    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 6.20% 3.60%
Geographic concentration risk | Massachusetts    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 5.00% 11.90%
Geographic concentration risk | Nevada    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 4.80% 2.80%
Geographic concentration risk | Spain    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 4.80% 0.00%
Geographic concentration risk | Georgia    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 3.60% 2.10%
Geographic concentration risk | New Jersey    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 3.00% 1.90%
Geographic concentration risk | Illinois    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 2.90% 1.70%
Geographic concentration risk | Tennessee    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 2.40% 1.40%
Geographic concentration risk | Colorado    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 2.20% 1.30%
Geographic concentration risk | New York    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 1.00% 4.50%
Geographic concentration risk | Pennsylvania    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 0.80% 4.70%
Geographic concentration risk | Other U.S.    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 1.60% 0.80%
Geographic concentration risk | Other Europe    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 1.20% 1.10%
Geographic concentration risk | Washington    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 0.00% 4.20%
Geographic concentration risk | Virginia    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 0.00% 2.20%
Geographic concentration risk | Arizona    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 0.00% 1.80%
Product concentration risk    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 100.00% 100.00%
Product concentration risk | Multifamily    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 38.70% 40.30%
Product concentration risk | Office    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 24.10% 22.80%
Product concentration risk | Industrial    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 18.40% 17.90%
Product concentration risk | Life Science    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 10.80% 13.70%
Product concentration risk | Hospitality    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 4.70% 2.80%
Product concentration risk | Senior Housing    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 2.50% 0.00%
Product concentration risk | Mixed Use    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 0.80% 0.40%
Product concentration risk | Student Housing    
Concentration Risk [Line Items]    
Concentration of credit risk (as a percent) 0.00% 2.10%