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Investments - Schedule of Transactions with Affiliated Investments and Controlled Investments (Details) - USD ($) | 3 Months Ended
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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.

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