v3.25.0.1
Significant Accounting Policies and Recent Accounting Updates (Details) - USD ($)
 3 Months Ended
Oct. 06, 2023
Dec. 31, 2024
Dec. 31, 2023
Sep. 30, 2024
Aug. 02, 2024
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Amortization of deferred loan origination fees, net   $ 12,759,000 $ 2,878,000    
Interest income, operating, accretion of discounts   6,255,000 5,301,000    
Payment-in-kind interest income   11,016,000 11,799,000    
Payment-in-kind interest capitalized   13,211,000 13,715,000    
Investment company, premium prepayment fees   94,000 35,000    
Interest and fee income   201,367,000 148,481,000    
Dividend income, operating, paid in kind   7,264,000 4,251,000    
Non-cash dividend income   7,264,000 4,251,000    
Proceeds from dividends received   1,824,000 0    
Dividend income   1,223,000 124,000    
Return of capital   235,000 693,000    
Fair value non-accrual loan   43,353,000   $ 93,204,000  
Preferred equity securities aggregate amount in nonaccrual status   714,000   0  
Amortization of debt premium   5,686,000 1,628,000    
Excise tax   (475,000) 500,000    
Income tax   0 0    
Stock repurchase program, authorized amount         $ 150,000,000
Offering costs, partnership interests $ 250,000,000        
Maximum percentage of gross sales, commission received, percentage 1.50%        
Deferred debt issuance cost   28,694,000   $ 25,361,000  
Amortization of deferred debt issuance costs   $ 2,645,000 $ 2,109,000    
Equity Distribution Agreement Plan 2021          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Number of shares issued under Equity Distribution Agreements (in shares)   0 0    
Equity Distribution Agreement Plan 2023          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Number of shares issued under Equity Distribution Agreements (in shares)   0 0