v3.26.1
COMMERCIAL MORTGAGE LOANS HELD-FOR-INVESTMENT - Additional Information (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
loan
foreclosure
payoff
Jun. 30, 2026
USD ($)
loan
foreclosure
payoff
Dec. 31, 2025
USD ($)
loan
Mar. 31, 2026
USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]        
Average risk rating, moderate 3.1 3.1 3.2  
Increase of allowance for credit loss $ 1,700,000      
Loans held for investment [1] $ 21,248,582 $ 21,248,582 $ 22,658,121  
Number of specific reserve loans | loan 2 2    
Number of charge-off credit loss related to foreclosure | foreclosure 1 1    
Number Of charge-off credit loss related to the payoff | payoff 2 2    
Risk rating, 5        
Financing Receivable, Credit Quality Indicator [Line Items]        
Unpaid principal balance of default risk loans $ 98,100,000 $ 98,100,000    
Amortized cost of default risk loans 80,500,000 80,500,000    
Fair value of default risk loans 80,600,000 80,600,000    
Commercial Real Estate Portfolio Segment | Multifamily        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance $ 17,400,000 17,400,000 17,600,000  
Recognized interest on loan   $ 300,000 $ 800,000  
Commercial Real Estate Portfolio Segment | Risk rating, 3        
Financing Receivable, Credit Quality Indicator [Line Items]        
Average risk rating, percentage 80.70% 80.70% 81.60%  
Commercial loans that paid off   $ 192,400,000    
Commercial loans funded   137,500,000    
Transition of commercial loans held for sale to a higher risk rating   17,000,000.0    
Transition of commercial loans held for sale to a lower risk rating   41,400,000    
Commercial Real Estate Portfolio Segment | Risk rating, 2        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans that paid off   15,300,000    
Transition of commercial loans held for sale to a lower risk rating   62,100,000    
Commercial Real Estate Portfolio Segment | Risk rating, 4        
Financing Receivable, Credit Quality Indicator [Line Items]        
Transition of commercial loans held for sale to a higher risk rating   58,500,000    
Commercial Real Estate Portfolio Segment | Risk rating, 5        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans that paid off   24,100,000    
Commercial loans funded   1,100,000    
Transition of commercial loans held for sale to a higher risk rating   14,200,000    
Transition of commercial loans held for sale to a risk rating two steps higher   21,900,000    
Commercial loans held for sale foreclosed and moved to REO   32,400,000    
Commercial Real Estate Portfolio Segment | Risk rating, 5 | Multifamily        
Financing Receivable, Credit Quality Indicator [Line Items]        
Recognized interest on loan   $ 300,000    
Commercial Real Estate Portfolio Segment | Risk rating, 5 | Multifamily | Arlington, TX        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance     $ 3,600,000  
Number of loans collateralized | loan 1 1 2  
Number of impaired office loans | loan 1 1 2  
Commercial Real Estate Portfolio Segment | Risk rating, 5 | Multifamily | Cedar Park, TX        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance $ 0 $ 0 $ 0  
Commercial loans, held-for-investment, unpaid principal value $ 13,700,000 $ 13,700,000 35,500,000  
Commercial Real Estate Portfolio Segment | Risk rating, 5 | Multifamily | Houston, TX        
Financing Receivable, Credit Quality Indicator [Line Items]        
Number of loans collateralized | loan 2 2    
Number of impaired office loans | loan 2 2    
Commercial Real Estate Portfolio Segment | Risk rating, 5 | Multifamily | Dallas, TX        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance $ 2,800,000 $ 2,800,000    
Commercial Real Estate Portfolio Segment | Risk rating, 5 | Multifamily | Philadelphia, PA        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance     $ 1,300,000  
Number of loans collateralized | loan     1  
Number of impaired office loans | loan     2  
Commercial loans, held-for-investment, unpaid principal value     $ 15,500,000  
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance 1,500,000 1,500,000    
Financing receivable, allowance for credit loss, writeoff   1,800,000    
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Arlington, TX        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance 5,100,000 5,100,000    
Commercial loans, held-for-investment, unpaid principal value 22,100,000 22,100,000    
Financing receivable, allowance for credit loss, writeoff 5,100,000      
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Des Moines, IA        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance $ 500,000 $ 500,000 $ 500,000  
Number of loans collateralized | loan 3 3 4  
Number of impaired office loans | loan 3 3 4  
Commercial loans, held-for-investment, unpaid principal value $ 8,600,000 $ 8,600,000    
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Tampa, FL        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance 3,200,000 3,200,000 $ 900,000  
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Tallahassee, FL        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance 3,500,000 3,500,000 3,000,000.0  
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Ypsilanti, MI        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance 5,900,000 5,900,000 5,900,000  
Commercial loans, held-for-investment, unpaid principal value 48,300,000 48,300,000 55,800,000  
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Houston, TX        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance 2,000,000.0 2,000,000.0    
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Dallas, TX        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance 2,800,000 2,800,000    
Commercial loans, held-for-investment, unpaid principal value 36,100,000 36,100,000    
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Philadelphia, PA        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance 1,300,000 1,300,000    
Commercial loans, held-for-investment, unpaid principal value $ 15,500,000 $ 15,500,000    
Commercial Real Estate Portfolio Segment | Risk Level, Monetary Default Default Risk | Multifamily | Colorado Springs, CO        
Financing Receivable, Credit Quality Indicator [Line Items]        
Commercial loans, specific allowance     $ 2,400,000 $ 2,400,000
Number of loans collateralized | loan     1  
Commercial loans, held-for-investment, unpaid principal value     $ 10,500,000 $ 10,500,000
[1] Our consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs") as the Company was the primary beneficiary of these VIEs. As of June 30, 2026 and December 31, 2025, assets of consolidated VIEs totaled $662,520,376 and $889,507,091, respectively, and the liabilities of consolidated VIEs totaled $581,587,437 and $750,274,556, respectively. See Note 4 for further discussion.