v3.26.1
Loans Held for Investment and the Allowance for Credit Losses - Additional Information (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
loan
Mar. 31, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
loan
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
loan
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Accrued interest, location Accrued interest and fees receivable     Accrued interest and fees receivable   Accrued interest and fees receivable
Accrued interest $ 17,200,000     $ 17,200,000   $ 17,200,000
Total loan commitment 4,508,434,000     4,508,434,000   4,290,603,000
Unfunded loan commitments 174,803,000     174,803,000   173,595,000
Unamortized loan fees included in Loans Held for Investment $ 13,500,000     $ 13,500,000   $ 15,000,000.0
Weighted average risk rating 3.0     3.0   3.0
Allowance for credit loss, increase $ 3,500,000   $ 1,600,000 $ 3,300,000 $ 4,800,000  
Allowance for credit losses increase due to loan origination 2,200,000   4,000,000.0 2,900,000 4,000,000.0  
Allowance for credit loss, decrease from full loan repayments 100,000   2,200,000 900,000 2,700,000  
Increase (decrease) in allowance for credit loss for macroeconomic events 1,400,000   (300,000) 1,300,000 3,500,000  
Total allowance for credit losses $ 80,680,000   $ 68,776,000 $ 80,680,000 $ 68,776,000 $ 77,423,000
Individual assessment, number of loans | loan 0     0   0
Nonaccrual, number of loans | loan 1     1   1
Financing Receivable, nonaccrual $ 42,500,000     $ 42,500,000   $ 41,000,000.0
Contractual interest payments       300,000    
Loans accrued interest income 0     $ 0   0
Number of loans modified during the period | loan       1    
Accrued paid in kind interest outstanding $ 1,402,000 $ 1,223,000   $ 1,402,000   $ 1,042,000
Number of loans accrued paid in kind interest outstanding | loan 1     1    
Accrued PIK interest $ 179,000 $ 181,000   $ 400,000    
Extended Maturity and Interest Rate Reduction            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of loans modified during the period | loan           1
Loan modified in the period       $ 42,500,000    
Financing receivables modified in the period as a percentage of total financing receivables       1.00%    
Five Loans            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Total loan repayments       $ 398,100,000    
Two Mortgage Loans            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of mortgage loans | loan       2    
Proceeds from partial principal payments       $ 78,300,000    
Five Mortgage Loans            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of mortgage loans | loan       5    
Total loan commitment 614,400,000     $ 614,400,000    
Unpaid principal balance refinanced 585,600,000     585,600,000    
Unfunded loan commitments $ 28,800,000     $ 28,800,000    
Three Mortgage Loans            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Number of mortgage loans | loan       3    
Loan repayment principal amount       $ 319,800,000