Borrowings - Details 2 (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 08, 2025 |
Jul. 09, 2025 |
May 01, 2025 |
Mar. 31, 2025 |
Jan. 03, 2024 |
Apr. 26, 2023 |
Apr. 14, 2023 |
Mar. 31, 2023 |
Sep. 08, 2022 |
Aug. 31, 2021 |
Feb. 07, 2020 |
Dec. 21, 2019 |
Nov. 30, 2025 |
Nov. 30, 2024 |
Nov. 30, 2025 |
Nov. 30, 2024 |
Feb. 28, 2025 |
Jul. 14, 2022 |
|
| Borrowings [Line Items] | ||||||||||||||||||
| Aggregate principal amount | $ 5,000,000 | |||||||||||||||||
| Interest expense | $ 11,911,568 | $ 13,044,000 | $ 36,735,463 | $ 39,135,022 | ||||||||||||||
| Amortization of deferred financing | 200,000 | |||||||||||||||||
| Amortization of premium on issuance | 0.2 | |||||||||||||||||
| Outstanding borrowings | $ 163,400,000 | |||||||||||||||||
| Financing costs | 1,376,388 | 1,176,806 | ||||||||||||||||
| Aggregate amount indebtedness | 1,000 | |||||||||||||||||
| Debt instrument, redemption amount | $ 60,000,000 | $ 24,450,000 | $ 50,000,000 | |||||||||||||||
| 8.75% 2025 Notes [Member] | ||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||
| Aggregate principal amount | $ 10,000,000 | |||||||||||||||||
| Net proceeds amount | $ 9,700,000 | 9,700,000 | ||||||||||||||||
| Deducting underwriting commissions amount | 400,000 | $ 400,000 | ||||||||||||||||
| Deferred financing costs | 30,000.00 | $ 30,000.00 | ||||||||||||||||
| Debt instrument, description | Interest on the 8.75% 2025 Notes is paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 8.75% per year. On February 2, 2024, pursuant to the terms of the indenture governing the 8.75% 2025 Notes, the Company elected to exercise its option to extend the maturity date of the 8.75% 2025 Notes from March 31, 2024 to March 31, 2025. Net proceeds from this offering were used to make investments in middle-market companies (including investments made through the SBIC Subsidiaries) in accordance with the Company’s investment objective and strategies and general corporate purposes. Financing costs and discounts of $0.7 million related to the 8.75% 2025 Notes have been capitalized and are being amortized over the term of the 8.75% 2025 Notes. | |||||||||||||||||
| Aggregate principal amount | $ 20,000,000 | |||||||||||||||||
| Interest expense | 0 | 400,000 | $ 100,000 | 1,300,000 | ||||||||||||||
| Amortization of deferred financing | 30,000.00 | 10,000.00 | 80,000.00 | |||||||||||||||
| Amortization of premium on issuance | $ 0 | 30,000.00 | $ 10,000.00 | 80,000.00 | ||||||||||||||
| Debt instrument, interest rate, stated percentage | 8.75% | 8.75% | ||||||||||||||||
| Aggregate principal amount | $ 20,000,000 | |||||||||||||||||
| 8.50% 2028 Notes [Member] | ||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||
| Aggregate principal amount | $ 7,500,000 | $ 50,000,000 | ||||||||||||||||
| Net proceeds amount | 7,300,000 | 48,400,000 | ||||||||||||||||
| Deducting underwriting commissions amount | $ 1,600,000 | |||||||||||||||||
| Deferred financing costs | $ 30,000.00 | $ 30,000.00 | ||||||||||||||||
| Interest expense | 1,200,000 | 1,200,000 | 3,700,000 | 3,700,000 | ||||||||||||||
| Amortization of deferred financing | $ 100,000 | 100,000 | 300,000 | 300,000 | ||||||||||||||
| Financing costs | $ 2,000,000 | |||||||||||||||||
| Par value, per share (in Dollars per share) | $ 25 | $ 25 | ||||||||||||||||
| Debt instrument, interest rate, stated percentage | 8.50% | 8.50% | ||||||||||||||||
| SBA Debentures [Member] | ||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||
| Outstanding amount | $ 350,000,000 | |||||||||||||||||
| Debt instrument, interest rate, stated percentage | 150.00% | 150.00% | ||||||||||||||||
| Notes One [Member] | ||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||
| Aggregate principal amount | $ 74,450,000 | $ 74,450,000 | ||||||||||||||||
| 7.25% 2025 Notes [Member] | ||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||
| Aggregate principal amount | $ 43,100,000 | |||||||||||||||||
| Aggregate principal amount | $ 5,000,000 | |||||||||||||||||
| 7.00% 2025 Notes [Member] | ||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||
| Aggregate principal amount | $ 12,000,000 | $ 12,000,000 | ||||||||||||||||
| Net proceeds amount | 11,600,000 | |||||||||||||||||
| Interest expense | $ 20,000.00 | 200,000 | $ 400,000 | 600,000 | ||||||||||||||
| Amortization of deferred financing | $ 0 | 30,000.00 | 80,000.00 | 100,000 | ||||||||||||||
| Outstanding borrowings | $ 8,300,000 | 12,000,000 | ||||||||||||||||
| Financing costs | $ 40,000.00 | |||||||||||||||||
| Debt instrument, interest rate, stated percentage | 7.00% | 7.00% | ||||||||||||||||
| Aggregate principal amount | $ 12,000,000 | |||||||||||||||||
| 8.75% 2025 Notes [Member] | ||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||
| Outstanding amount | $ 10,000,000 | |||||||||||||||||
| Outstanding borrowings | $ 0 | 20,000,000 | $ 2,200,000 | 20,000,000 | ||||||||||||||
| 8.50% 2028 Notes [Member] | ||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||
| Outstanding amount | $ 200,000 | |||||||||||||||||
| Outstanding borrowings | 57,500,000 | 57,500,000 | 57,500,000 | 57,500,000 | ||||||||||||||
| Outstanding fair value | 57,500,000 | $ 58,300,000 | $ 57,500,000 | $ 58,300,000 | ||||||||||||||
| 8.75% 2025 Notes [Member] | ||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||
| Amortization of deferred financing | $ 0 | |||||||||||||||||
| Minimum [Member] | 8.75% 2025 Notes [Member] | ||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||
| Carrying amount | 57,500,000 | |||||||||||||||||
| Maximum [Member] | 8.75% 2025 Notes [Member] | ||||||||||||||||||
| Borrowings [Line Items] | ||||||||||||||||||
| Fair value | $ 58,300,000 | |||||||||||||||||