v3.26.1
BORROWINGS (Schedule of Debt) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Principal Outstanding $ 1,875,620 $ 1,550,594
Unamortized Issuance Costs and Discounts 10,949 5,656
Outstanding Borrowings $ 1,864,671 $ 1,544,938
Weighted Average Borrowing Rate 5.58% 5.73%
Weighted Average Remaining Maturity 10 years 8 months 12 days 3 years 1 month 6 days
Value of Collateral $ 2,238,141 $ 1,897,049
ACR 2026-FL4 Senior Notes    
Debt Instrument [Line Items]    
Principal Outstanding 879,499  
Unamortized Issuance Costs and Discounts 6,036  
Outstanding Borrowings $ 873,463  
Weighted Average Borrowing Rate 5.36%  
Weighted Average Remaining Maturity 18 years 4 months 24 days  
Value of Collateral $ 1,016,762  
CRE - Term Reinvestment Financing Facility    
Debt Instrument [Line Items]    
Principal Outstanding 711,875 731,002
Unamortized Issuance Costs and Discounts 2,669 2,835
Outstanding Borrowings $ 709,206 $ 728,167
Weighted Average Borrowing Rate 5.44% 5.50%
Weighted Average Remaining Maturity 4 years 7 months 6 days 4 years 9 months 18 days
Value of Collateral $ 1,009,811 $ 1,009,622
Senior Secured Financing Facility    
Debt Instrument [Line Items]    
Principal Outstanding 42,926 63,099
Unamortized Issuance Costs and Discounts 1,272 1,454
Outstanding Borrowings $ 41,654 $ 61,645
Weighted Average Borrowing Rate 7.44% 7.53%
Weighted Average Remaining Maturity 1 year 8 months 12 days 2 years 1 month 6 days
Value of Collateral $ 146,354 $ 166,526
CRE - Term Warehouse Financing Facilities    
Debt Instrument [Line Items]    
Principal Outstanding 19,627 534,760
Unamortized Issuance Costs and Discounts 689 898
Outstanding Borrowings $ 18,938 $ 533,862
Weighted Average Borrowing Rate 7.68% 5.54%
Weighted Average Remaining Maturity 7 months 6 days 9 months 18 days
Value of Collateral $ 38,250 $ 693,937
Mortgage Payable    
Debt Instrument [Line Items]    
Principal Outstanding 20,145 20,185
Unamortized Issuance Costs and Discounts 0 0
Outstanding Borrowings $ 20,145 $ 20,185
Weighted Average Borrowing Rate 7.47% 7.57%
Weighted Average Remaining Maturity 1 month 6 days 3 months 18 days
Value of Collateral $ 26,964 $ 26,964
5.75% Senior Unsecured Notes    
Debt Instrument [Line Items]    
Principal Outstanding 150,000 150,000
Unamortized Issuance Costs and Discounts 283 469
Outstanding Borrowings $ 149,717 $ 149,531
Weighted Average Borrowing Rate 5.75% 5.75%
Weighted Average Remaining Maturity 4 months 24 days 7 months 6 days
Value of Collateral $ 0 $ 0
Unsecured Junior Subordinated Debentures    
Debt Instrument [Line Items]    
Principal Outstanding 51,548 51,548
Unamortized Issuance Costs and Discounts 0 0
Outstanding Borrowings $ 51,548 $ 51,548
Weighted Average Borrowing Rate 7.90% 7.97%
Weighted Average Remaining Maturity 10 years 4 months 24 days 10 years 8 months 12 days
Value of Collateral $ 0 $ 0