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PORTFOLIO INVESTMENTS AND FAIR VALUE - Aggregate Values of Level 3 Portfolio Investments Change (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
PORTFOLIO INVESTMENTS AND FAIR VALUE      
Fair value at beginning of period $ 953,497,688 $ 874,460,683 $ 874,460,683
Purchases of investments 79,893,461   221,154,933
PIK interest 2,492,551   3,310,111
Sales and redemptions (48,344,276)   (151,692,285)
Realized losses $ (6,847,977)   $ (15,843,406)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Realized Investment Gains (Losses)   Realized Investment Gains (Losses)
Change in unrealized (depreciation) appreciation included in earnings $ 2,626,960   $ 19,570,409
Change in unrealized appreciation on foreign currency included in earnings 1,130,044   (178,559)
Amortization of premium and accretion of discount, net 1,437,223 1,383,624  
Discount amortization 31,434   (2,715,802)
Fair value at end of period 985,885,674   953,497,688
Level 3 transfers 0   0
Senior SecuredLoans-First Lien      
PORTFOLIO INVESTMENTS AND FAIR VALUE      
Fair value at beginning of period 856,096,255 774,789,320 774,789,320
Purchases of investments 75,050,254   213,545,132
PIK interest 2,291,636   2,824,403
Sales and redemptions (46,261,639)   (126,924,841)
Realized losses (5,651,670)   (1,580,768)
Change in unrealized (depreciation) appreciation included in earnings (6,081,655)   (9,026,597)
Change in unrealized appreciation on foreign currency included in earnings 1,117,858   (169,778)
Amortization of premium and accretion of discount, net 1,408,341    
Discount amortization     (2,639,384)
Fair value at end of period 877,969,380   856,096,255
Senior Secured Loans-Second Lien      
PORTFOLIO INVESTMENTS AND FAIR VALUE      
Fair value at beginning of period 11,948,850 21,957,500 21,957,500
Sales and redemptions     (9,782,348)
Realized losses     (20,475,000)
Change in unrealized (depreciation) appreciation included in earnings 55,070   20,187,185
Amortization of premium and accretion of discount, net 21,080    
Discount amortization     (61,513)
Fair value at end of period 12,025,000   11,948,850
Unsecured Debt      
PORTFOLIO INVESTMENTS AND FAIR VALUE      
Fair value at beginning of period 6,612,493 5,956,280 5,956,280
Purchases of investments 9,454   117,066
PIK interest 200,915   485,708
Sales and redemptions (21,325)    
Change in unrealized (depreciation) appreciation included in earnings (31,155)   40,312
Change in unrealized appreciation on foreign currency included in earnings 3,291   (1,778)
Amortization of premium and accretion of discount, net 7,802    
Discount amortization     (14,905)
Fair value at end of period 6,781,475   6,612,493
Equity Securities      
PORTFOLIO INVESTMENTS AND FAIR VALUE      
Fair value at beginning of period 78,840,090 $ 71,757,583 71,757,583
Purchases of investments 4,833,753   7,492,735
Sales and redemptions (2,061,312)   (14,985,096)
Realized losses (1,196,307)   6,212,362
Change in unrealized (depreciation) appreciation included in earnings 8,684,700   8,369,509
Change in unrealized appreciation on foreign currency included in earnings 8,895   (7,003)
Fair value at end of period $ 89,109,819   $ 78,840,090