Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)

v3.25.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
$ in Thousands
 3 Months Ended
Apr. 04, 2024
Dec. 31, 2024
USD ($)
loan
investment
Dec. 31, 2023
USD ($)
Sep. 30, 2024
USD ($)
investment
loan
Schedule of Investments [Line Items]        
Reverse stock split, conversion ratio 0.5      
Cost   $ 816,140   $ 771,011 [1]
Fair Value   799,497   796,260 [1]
Total interest income (excluding PIK interest income)   20,557 $ 21,588  
PIK interest income   763 1,408  
OID        
Schedule of Investments [Line Items]        
Fair Value   $ 500   $ 600
Number of loans | loan   2   2
Total interest income (excluding PIK interest income)   $ 83 52  
PIK        
Schedule of Investments [Line Items]        
Number of investments | investment   8   8
Proceeds from interest received   $ 4,500 $ 0  
B+T Group Acquisition, Inc., Edge Adhesives Holdings, Inc,. And WB Xcel Holdings, LLC        
Schedule of Investments [Line Items]        
Cost   $ 52,700   $ 28,300
Cost percentage   7.10%   4.10%
Fair Value   $ 28,500   $ 12,800
Fair value percentage   4.00%   1.90%
[1] Cumulative gross unrealized depreciation for federal income tax purposes is $66.1 million; cumulative gross unrealized appreciation for federal income tax purposes is $85.8 million. Cumulative net unrealized appreciation is $19.7 million, based on a tax cost of $776.5 million.