v3.26.3
Summary of Significant Accounting Policies - Schedule of Changes in Investments (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Marketable Securities [Line Items]        
Beginning Balance     $ 1,533,302,472  
Ending Balance $ 543,534,440   543,534,440  
Level 3        
Marketable Securities [Line Items]        
Beginning Balance     1,532,874,531  
Ending Balance 531,533,961   531,533,961  
Level 3 | Independent Third-Party Valuation        
Marketable Securities [Line Items]        
Beginning Balance 1,287,097,981 $ 1,773,752,304 1,532,172,316 $ 1,764,630,382
Net realized and unrealized gains (losses) $ (14,080,070) $ (1,870,878) $ (64,351,712) $ (54,220,294)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Gain (Loss) on Investments Gain (Loss) on Investments Gain (Loss) on Investments Gain (Loss) on Investments
Acquisitions $ 13,146,656 $ 66,735,749 $ 66,012,566 $ 226,346,392
Dispositions 755,346,658 140,382,321 (991,058,940) (238,629,446)
Transfers into Level 3   11,227,978   16,223,633
Transfers out of Level 3   (128,183) (11,956,321) (5,016,018)
Ending Balance 530,817,909 1,709,334,649 530,817,909 1,709,334,649
Net change in unrealized appreciation/depreciation during the period on investments still held at period end (included in net realized and unrealized gains/losses, above) $ (5,396,015) $ (13,477,343) $ (46,682,413) $ (31,461,168)
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments
Level 3 | Valuation Designee        
Marketable Securities [Line Items]        
Beginning Balance $ 702,215 $ 1,157,403 $ 702,215 $ 1,157,403
Net realized and unrealized gains (losses) 13,837 (447) (961,737) (2,349,058)
Dispositions     8,243,293 2,539,224
Transfers into Level 3   128,183 9,218,867 5,016,018
Ending Balance 716,052 1,285,139 716,052 1,285,139
Net change in unrealized appreciation/depreciation during the period on investments still held at period end (included in net realized and unrealized gains/losses, above) $ 13,837 $ (447) $ 7,542,554 $ (2,349,581)
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments
Level 3 | Bank Debt | Independent Third-Party Valuation        
Marketable Securities [Line Items]        
Beginning Balance $ 1,115,308,862 $ 1,525,587,362 $ 1,358,559,662 $ 1,549,242,872
Net realized and unrealized gains (losses) $ (9,064,100) $ (2,181,394) $ (43,907,793) $ (55,932,526)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Gain (Loss) on Investments Gain (Loss) on Investments Gain (Loss) on Investments Gain (Loss) on Investments
Acquisitions $ 12,622,305 $ 65,391,223 $ 41,437,883 $ 186,991,361
Dispositions (738,573,194) (124,583,402) (973,058,425) (221,083,573)
Transfers into Level 3   11,227,978   16,223,633
Transfers out of Level 3   0 (2,737,454) 0
Ending Balance 380,293,873 1,475,441,767 380,293,873 1,475,441,767
Net change in unrealized appreciation/depreciation during the period on investments still held at period end (included in net realized and unrealized gains/losses, above) $ (433,038) $ (13,419,807) $ (26,673,169) $ (32,537,735)
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments
Level 3 | Bank Debt | Valuation Designee        
Marketable Securities [Line Items]        
Beginning Balance $ 0 $ 0 $ 0 $ 0
Net realized and unrealized gains (losses) 0 0 0 0
Dispositions     0 0
Transfers into Level 3   0 0 0
Ending Balance 0 0 0 0
Net change in unrealized appreciation/depreciation during the period on investments still held at period end (included in net realized and unrealized gains/losses, above) $ 0 $ (0) $ 0 $ 0
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments
Level 3 | Other Corporate Debt | Independent Third-Party Valuation        
Marketable Securities [Line Items]        
Beginning Balance $ 62,320,667 $ 59,884,621 $ 59,756,438 $ 64,772,456
Net realized and unrealized gains (losses) $ (231,388) $ 0 $ (216,215) $ 0
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Gain (Loss) on Investments Gain (Loss) on Investments Gain (Loss) on Investments Gain (Loss) on Investments
Acquisitions $ 0 $ 0 $ 2,549,056 $ 0
Dispositions (11,000,000) 0 (11,000,000) 0
Transfers into Level 3   0   (0)
Transfers out of Level 3   (128,183) 0 (5,016,018)
Ending Balance 51,089,279 59,756,438 51,089,279 59,756,438
Net change in unrealized appreciation/depreciation during the period on investments still held at period end (included in net realized and unrealized gains/losses, above) $ (231,388) $ 0 $ (216,215) $ (0)
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments
Level 3 | Other Corporate Debt | Valuation Designee        
Marketable Securities [Line Items]        
Beginning Balance $ 127,490 $ 0 $ 127,490 $ 0
Net realized and unrealized gains (losses) 0 (693) 0 (2,349,304)
Dispositions     0 2,539,224
Transfers into Level 3   128,183 0 5,016,018
Ending Balance 127,490 127,490 127,490 127,490
Net change in unrealized appreciation/depreciation during the period on investments still held at period end (included in net realized and unrealized gains/losses, above) $ 0 $ (693) $ 0 $ (2,349,828)
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments
Level 3 | Equity Securities | Independent Third-Party Valuation        
Marketable Securities [Line Items]        
Beginning Balance $ 109,468,452 $ 188,280,321 $ 113,856,216 $ 150,615,054
Net realized and unrealized gains (losses) $ (4,784,582) $ 310,516 $ (20,227,704) $ 1,712,232
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Gain (Loss) on Investments Gain (Loss) on Investments Gain (Loss) on Investments Gain (Loss) on Investments
Acquisitions $ 524,351 $ 1,344,526 $ 22,025,627 $ 39,355,031
Dispositions 5,773,464 15,798,919 (7,000,515) (17,545,873)
Transfers into Level 3   0   0
Transfers out of Level 3   0 (9,218,867) 0
Ending Balance 99,434,757 174,136,444 99,434,757 174,136,444
Net change in unrealized appreciation/depreciation during the period on investments still held at period end (included in net realized and unrealized gains/losses, above) $ (4,731,589) $ (57,536) $ (19,793,029) $ 1,076,567
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments
Level 3 | Equity Securities | Valuation Designee        
Marketable Securities [Line Items]        
Beginning Balance $ 574,725 $ 1,157,403 $ 574,725 $ 1,157,403
Net realized and unrealized gains (losses) 13,837 246 (961,737) 246
Dispositions     8,243,293 0
Transfers into Level 3   0 9,218,867 0
Ending Balance 588,562 1,157,649 588,562 1,157,649
Net change in unrealized appreciation/depreciation during the period on investments still held at period end (included in net realized and unrealized gains/losses, above) $ 13,837 $ 246 $ 7,542,554 $ 246
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments