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Investments - Schedule of Transactions with Affiliated Investments and Controlled Investments (Details) - USD ($)
 3 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Total Affiliated Investments [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2] $ 14,750,785 $ 37,289,617
Purchases/(Sales) of or Advances/ (Distributions) [1],[2] 1,147,990
Transfers In/(Out) of Controlled [1],[2]
Unrealized Gain/(Loss) [1],[2] (889,186) 2,431,263
Realized Gain/(Loss) [1],[2]
Fair value as of ending [1],[2] 13,861,599 40,868,870
Earned Income [1],[2] 142,495 455,692
Total Controlled Investments [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2] 70,931,647 63,640,043
Purchases/(Sales) of or Advances/ (Distributions) [1],[2] 55,207,388 2,812,845
Transfers In/(Out) of Controlled [1],[2]
Unrealized Gain/(Loss) [1],[2] (249,338) (1,200,373)
Realized Gain/(Loss) [1],[2]
Fair value as of ending [1],[2] 125,889,697 65,252,515
Earned Income [1],[2] 1,987,546 1,784,405
Black Angus Steakhouses, LLC [Member] | Total Affiliated Investments [Member] | Senior Secured First Lien Delayed Draw Term Loan [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2] 751,207 875,749
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]
Transfers In/(Out) of Controlled [1],[2]
Unrealized Gain/(Loss) [1],[2] (290,176)
Realized Gain/(Loss) [1],[2]
Fair value as of ending [1],[2] 461,031 875,749
Earned Income [1],[2]
Black Angus Steakhouses, LLC [Member] | Total Affiliated Investments [Member] | Senior Secured First Lien Super Priority DDTL [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2] 1,647,776  
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]  
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2] (636,503)  
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2] 1,011,273  
Earned Income [1],[2]  
Black Angus Steakhouses, LLC [Member] | Total Affiliated Investments [Member] | Senior Secured First Lien Term Loan [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2]   1,459,249
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]  
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2]   (470,800)
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2]   988,449
Earned Income [1],[2]  
Black Angus Steakhouses, LLC [Member] | Total Affiliated Investments [Member] | Senior Secured First Lien Super Priority DDTL [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2]   1,920,960
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]  
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2]  
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2]   1,920,960
Earned Income [1],[2]   (20,809)
FST Holdings Parent, LLC [Member] | Total Affiliated Investments [Member] | Equity [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2] 12,351,802 10,000,003
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]
Transfers In/(Out) of Controlled [1],[2]
Unrealized Gain/(Loss) [1],[2] 37,493 (3)
Realized Gain/(Loss) [1],[2]
Fair value as of ending [1],[2] 12,389,295 10,000,000
Earned Income [1],[2] 142,495
ECC Capital Corp. [Member] | Total Controlled Investments [Member] | Equity [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2] 4,872,000  
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]  
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2] 588,000  
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2] 5,460,000  
Earned Income [1],[2]  
ECC Capital Corp. [Member] | Total Controlled Investments [Member] | Senior Secured First Lien Term Loan [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2] 7,422,012  
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]  
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2]  
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2] 7,422,012  
Earned Income [1],[2] 210,472  
FlexFIN, LLC [Member] | Total Controlled Investments [Member] | Equity Interest [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2] 36,683,045 38,870,711
Purchases/(Sales) of or Advances/ (Distributions) [1],[2] 4,264,395 (2,460,565)
Transfers In/(Out) of Controlled [1],[2]
Unrealized Gain/(Loss) [1],[2]
Realized Gain/(Loss) [1],[2]
Fair value as of ending [1],[2] 40,947,440 36,410,146
Earned Income [1],[2] 1,399,350 1,348,200
NSG Captive, Inc. [Member] | Total Controlled Investments [Member] | Equity [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2] 101,000  
Purchases/(Sales) of or Advances/ (Distributions) [1],[2] 49,042,993  
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2] (614,422)  
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2] 48,529,571  
Earned Income [1],[2]  
NVTN LLC [Member] | Total Controlled Investments [Member] | Senior Secured First Lien Delayed Draw Term Loan [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2] 5,500,000 7,214,856
Purchases/(Sales) of or Advances/ (Distributions) [1],[2] 1,900,000 3,190,114
Transfers In/(Out) of Controlled [1],[2]
Unrealized Gain/(Loss) [1],[2] (41,470)
Realized Gain/(Loss) [1],[2]
Fair value as of ending [1],[2] 7,400,000 10,363,500
Earned Income [1],[2] 198,250 286,238
NVTN LLC [Member] | Total Controlled Investments [Member] | Senior Secured First Lien Term Loan B [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2] 16,353,590 5,037,547
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]
Transfers In/(Out) of Controlled [1],[2]
Unrealized Gain/(Loss) [1],[2] (222,916) 70,207
Realized Gain/(Loss) [1],[2]
Fair value as of ending [1],[2] 16,130,674 5,107,754
Earned Income [1],[2] $ 179,474
1888 Industrial Services, LLC [Member] | Total Affiliated Investments [Member] | Senior Secured First Lien Term Loan C [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2]   751,479
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]  
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2]   678,794
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2]   1,430,273
Earned Income [1],[2]   40,558
1888 Industrial Services, LLC [Member] | Total Affiliated Investments [Member] | Revolving Credit Facility [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2]   4,632,177
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]   1,141,365
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2]   479,897
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2]   6,253,439
Earned Income [1],[2]   152,744
Maritime Wireless Holdings LLC [Member] | Total Affiliated Investments [Member] | Equity [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2]   10,150,000
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]  
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2]   1,750,000
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2]   11,900,000
Earned Income [1],[2]  
Maritime Wireless Holdings LLC [Member] | Total Affiliated Investments [Member] | Senior Secured First Lien Term Loan B [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2]   7,500,000
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]   6,625
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2]   (6,625)
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2]   7,500,000
Earned Income [1],[2]   283,199
Kemmerer Operations, LLC [Member] | Total Controlled Investments [Member] | Equity [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2]   9,133,052
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]   2,300,000
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2]   (1,229,110)
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2]   10,203,942
Earned Income [1],[2]  
Kemmerer Operations, LLC [Member] | Total Controlled Investments [Member] | Senior Secured First Lien Term Loan [Member]    
Schedule of Transactions with Affiliated Investments and Controlled Investments [Line Items]    
Fair value as of beginning [1],[2]   3,383,877
Purchases/(Sales) of or Advances/ (Distributions) [1],[2]   (216,704)
Transfers In/(Out) of Controlled [1],[2]  
Unrealized Gain/(Loss) [1],[2]  
Realized Gain/(Loss) [1],[2]  
Fair value as of ending [1],[2]   3,167,173
Earned Income [1],[2]   $ 149,967
[1] Securities with a zero value at the beginning and end of the period, and those that had no transaction activity were excluded from the roll forward.
[2] The par amount and additional detail are shown in the Consolidated Schedules of Investments.