v3.26.1
LOANS (Summary of Loans) (Details)
Mar. 31, 2026
USD ($)
Loan
Dec. 31, 2025
USD ($)
Loan
Dec. 31, 2024
USD ($)
Receivables With Imputed Interest [Line Items]      
Amortized Cost, Loans held for investment $ 2,202,837,000 $ 1,830,367,000  
Less: allowance for credit losses (19,431,000) (20,398,000) $ (32,847,000)
Commercial Real Estate Loans      
Receivables With Imputed Interest [Line Items]      
Principal, Loans held for investment 2,212,425,000 1,837,810,000  
Unamortized (Discount) Premium, net (9,588,000) (7,443,000)  
Amortized Cost, Loans held for investment 2,202,837,000 1,830,367,000  
Less: allowance for credit losses (19,431,000) (20,398,000)  
Carrying Value, Loans held for investment 2,183,406,000 1,809,969,000  
Loan origination fees 8,900,000 6,600,000  
Deferred amendment fees $ 686,000,000,000 $ 852,000  
Concentration of loan portfolio risk 100.00% 100.00%  
Commercial Real Estate Loans | Multifamily      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 1,781,521,000 $ 1,482,268,000  
Concentration of loan portfolio risk 81.50% 81.90%  
Commercial Real Estate Loans | Office      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 237,101,000 $ 230,385,000  
Concentration of loan portfolio risk 10.90% 12.70%  
Commercial Real Estate Loans | Hotel      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 101,992,000 $ 57,426,000  
Concentration of loan portfolio risk 4.70% 3.20%  
Commercial Real Estate Loans | Mixed-Use      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 47,449,000 $ 24,614,000  
Concentration of loan portfolio risk 2.20% 1.40%  
Commercial Real Estate Loans | Self Storage      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 15,343,000 $ 15,276,000  
Concentration of loan portfolio risk 0.70% 0.80%  
Commercial Real Estate Loans | Southeast      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 414,236,000 $ 373,256,000  
Concentration of loan portfolio risk 19.00% 20.60%  
Commercial Real Estate Loans | Southwest      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 370,019,000 $ 437,113,000  
Concentration of loan portfolio risk 16.90% 24.20%  
Commercial Real Estate Loans | East North Central      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 308,381,000 $ 72,720,000  
Concentration of loan portfolio risk 14.10% 4.00%  
Commercial Real Estate Loans | Mountain      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 283,172,000 $ 223,247,000  
Concentration of loan portfolio risk 13.00% 12.30%  
Commercial Real Estate Loans | Northeast      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 276,173,000 $ 163,724,000  
Concentration of loan portfolio risk 12.60% 9.10%  
Commercial Real Estate Loans | Mid Atlantic      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 226,171,000 $ 222,958,000  
Concentration of loan portfolio risk 10.40% 12.30%  
Commercial Real Estate Loans | Pacific      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 225,201,000 $ 253,558,000  
Concentration of loan portfolio risk 10.30% 14.00%  
Commercial Real Estate Loans | West North Central      
Receivables With Imputed Interest [Line Items]      
Carrying Value, Loans held for investment $ 80,053,000 $ 63,393,000  
Concentration of loan portfolio risk 3.70% 3.50%  
Commercial Real Estate Loans | Whole Loans      
Receivables With Imputed Interest [Line Items]      
Principal, Loans held for investment $ 2,202,675,000 $ 1,828,299,000  
Unamortized (Discount) Premium, net (9,510,000) (7,357,000)  
Amortized Cost, Loans held for investment 2,193,165,000 1,820,942,000  
Less: allowance for credit losses (19,220,000) (20,158,000)  
Carrying Value, Loans held for investment $ 2,173,945,000 $ 1,800,784,000  
Quantity | Loan 60 53  
Loans receivable, interest rate floor 3.69% 3.83%  
Loans held for investment, unfunded loan commitments $ 99,300,000 $ 88,600,000  
Commercial Real Estate Loans | Whole Loans | Minimum      
Receivables With Imputed Interest [Line Items]      
Contractual Interest Rates 2.50% 2.50%  
Commercial Real Estate Loans | Whole Loans | Maximum      
Receivables With Imputed Interest [Line Items]      
Contractual Interest Rates 7.00% 7.00%  
Commercial Real Estate Loans | Mezzanine loan      
Receivables With Imputed Interest [Line Items]      
Loans receivable, interest rate floor 2.13% 1.78%  
Contractual Interest Rates   10.00%  
Mezzanine tranche $ 20,000,000 $ 17,800,000  
Fixed interest rate 15.00% 20.00%  
Commercial Real Estate Loans | Preferred equity investment      
Receivables With Imputed Interest [Line Items]      
Principal, Loans held for investment $ 9,750,000 $ 9,511,000  
Unamortized (Discount) Premium, net (78,000) (86,000)  
Amortized Cost, Loans held for investment 9,672,000 9,425,000  
Less: allowance for credit losses (211,000) (240,000)  
Carrying Value, Loans held for investment $ 9,461,000 $ 9,185,000  
Fixed interest rate 10.00% 4.00%  
Commercial Real Estate Loans | Preferred equity investment | Minimum      
Receivables With Imputed Interest [Line Items]      
Contractual Interest Rates 10.00%    
Commercial Real Estate Loans | Whole Loans in Default      
Receivables With Imputed Interest [Line Items]      
Amortized Cost, Loans held for investment $ 62,300,000 $ 37,900,000  
Quantity | Loan 3 2