Borrowings - Details 2 (Details) - USD ($) |
4 Months Ended | 9 Months Ended | 12 Months Ended | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Feb. 28, 2026 |
Jan. 23, 2026 |
Sep. 08, 2025 |
Jul. 09, 2025 |
Mar. 31, 2025 |
Jan. 03, 2024 |
May 01, 2023 |
Apr. 26, 2023 |
Apr. 14, 2023 |
Mar. 31, 2023 |
Sep. 08, 2022 |
Aug. 31, 2021 |
Jul. 15, 2021 |
Mar. 10, 2021 |
Jul. 09, 2020 |
Feb. 07, 2020 |
Dec. 21, 2019 |
Feb. 28, 2026 |
Nov. 30, 2025 |
Feb. 28, 2026 |
Feb. 28, 2025 |
Feb. 29, 2024 |
Jul. 14, 2022 |
|
| Borrowings [Line Items] | |||||||||||||||||||||||
| Outstanding borrowings | $ 10,200,000 | ||||||||||||||||||||||
| Financing costs | $ 6,852,926 | $ 1,176,808 | $ 4,694,711 | ||||||||||||||||||||
| 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 | 30,000.00 | ||||||||||||||||||||
| Debt instrument, description | 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. The 8.75% 2025 Notes were paid off in full at maturity on March 31, 2025.As of February 28, 2026, the total amount of 8.75% 2025 Notes outstanding was $0.0 million. As of February 28, 2025, the total amount of 8.75% 2025 Notes outstanding was $20.0 million, and they had a fair value of $20.1 million.For the years ended February 28, 2026 and February 28, 2025, we recorded $0.1 million and $1.5 million, respectively, of interest expense, $0.01 million and $0.04 million, respectively, of amortization of deferred financing costs and $0.01 million and $0.1 million, respectively, of amortization of discount on issuance of 8.75% Notes due 2025. Interest expense, amortization of deferred financing costs and amortization of discount on issuance of notes are reported as interest and debt financing expense on the consolidated statements of operations. During the years ended February 28, 2026 and February 28, 2025, the average dollar amount of 8.75% 2025 Notes outstanding was $1.6 million and $20.0 million respectively.8.50% 2028 NotesOn April 14, 2023, the Company issued $50.0 million in aggregate principal amount of 8.50% fixed-rate notes due 2028 (the “8.50% 2028 Notes”) for net proceeds of $48.4 million after deducting underwriting commissions of approximately $1.6 million. Offering costs incurred were approximately $0.03 million. On April 26, 2023, the underwriters fully exercised their option to purchase an additional $7.5 million in aggregate principal amount of the 8.50% 2028 Notes for net proceeds to the Company of $7.3 million after deducting underwriting commissions of approximately $0.2 million. Interest on the 8.50% 2028 Notes is paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 8.50% per year. The 8.50% 2028 Notes mature on April 15, 2028, and commencing April 14, 2025, may be redeemed in whole or in part at any time or from time to time at the Company’s option. Net proceeds from this offering were used to repay a portion of the outstanding indebtedness under the Encina Credit Facility, make investments in middle-market companies (including investments made through our SBIC Subsidiaries) in accordance with the Company’s investment objective and strategies and for general corporate purposes. Financing costs of $2.0 million related to the 8.50% 2028 Notes have been capitalized and are being amortized over the term of the 8.50% 2028 Notes.As of February 28, 2026, the total amount of 8.50% 2028 Notes outstanding was $57.5 million. The 8.50% 2028 Notes are listed on the NYSE under the trading symbol “SAZ” with a par value of $25.00 per note. As of February 28, 2026, the carrying amount and fair value of the 8.50% 2028 Notes was $57.5 million and $58.1 million, respectively. The fair value of the 8.50% 2028 Notes, which are publicly traded, is based upon closing market quotes as of the measurement date and would be classified as a Level 1 liability within the fair value hierarchy. As of February 28, 2025, the carrying amount and fair value of the 8.50% 2028 Notes was $57.5 million and $58.3 million, respectively.For the years ended February 28, 2026 and February 28, 2025, we recorded $4.9 million and $4.9 million, respectively, of interest expense and $0.4 million and $0.4 million, respectively, of amortization of deferred financing costs of 8.50% 2028 Notes. Interest expense and amortization of deferred financing costs are reported as interest and debt financing expense on the consolidated statements of operations. During the years ended February 28, 2026 and February 28, 2025, the average dollar amount of 8.50% 2028 Notes outstanding was $57.5 million and $57.5 million respectively.7.25% 2030 NotesOn January 23, 2026, the Company issued $50.0 million in aggregate principal amount of 7.25% fixed-rate notes due 2030 (the “7.25% 2030 Notes”) for net proceeds of approximately $48.8 million, based on an offering price of 99.117% per Note, after deducting the placement agent fee and estimated offering expenses of approximately $1.2 million. Interest on the 7.25% 2030 Notes is paid semi-annually in arrears on May 1 and November 1, at a rate of 7.25% per year, commencing on May 1, 2026. The 7.25% 2030 Notes will mature on May 1, 2030 and may be redeemed in whole or in part at the Company’s option at any time prior to January 23, 2028 at par plus a “make-whole” premium, and thereafter at par. Net proceeds from this offering were used to pay off the Company’s outstanding 4.375% 2026 Notes and for general corporate purposes. Financing costs of $0.8 million related to the 7.25% 2030 Notes have been capitalized and are being amortized over the term of the 7.25% 2030 Notes.As of February 28, 2026, the total amount of 7.25% 2030 Notes outstanding was $50.0 million. The 7.25% 2030 Notes are not listed and have a par value of $1,000 per note. As of February 28, 2026, the carrying amount and fair value of the 7.25% 2030 Notes was $50.0 million and $49.6 million, respectively, which is based on a market yield analysis and would be classified as a Level 3 liability within the fair value hierarchy.For the year ended February 28, 2026, the Company recorded $0.4 million of interest expense and $0.03 million of amortization of deferred financing costs related to the 7.25% 2030 Notes. Interest expense and amortization of deferred financing costs are reported as interest and debt financing expense on the consolidated statements of operations. During the year ended the average dollar amount of 7.25% 2030 Notes outstanding was $5.1 million.7.50% 2031 NotesOn February 6, 2026, the Company issued $100.0 million in aggregate principal amount of 7.50% fixed-rate notes due 2031 (the “7.50% 2031 Notes”) for net proceeds were approximately $96.4 million, after deducting the underwriting discount of approximately $3.1 million and estimated offering costs of approximately $0.5 million. Interest on the 7.50% 2031 Notes is paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 7.50% per year, commencing May 31, 2026. | ||||||||||||||||||||||
| Outstanding borrowings | 1,600,000 | 20,000,000 | |||||||||||||||||||||
| Outstanding fair value | 20,100,000 | ||||||||||||||||||||||
| Interest expense | 100,000 | 1,500,000 | |||||||||||||||||||||
| Amortization of deferred financing | 10,000.00 | 40,000.00 | |||||||||||||||||||||
| Amortization of premium on issuance | $ 10,000.00 | 100,000 | |||||||||||||||||||||
| Debt instrument, interest rate, stated percentage | 8.75% | 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 | $ 200,000 | 1,600,000 | |||||||||||||||||||||
| Deferred financing costs | $ 30,000.00 | ||||||||||||||||||||||
| Outstanding borrowings | $ 57,500,000 | ||||||||||||||||||||||
| Outstanding fair value | 58,300,000 | ||||||||||||||||||||||
| Interest expense | 4,900,000 | 4,900,000 | |||||||||||||||||||||
| Amortization of deferred financing | 400,000 | 400,000 | |||||||||||||||||||||
| Financing costs | $ 2,000,000 | ||||||||||||||||||||||
| Par value, per share (in Dollars per share) | $ 25 | $ 25 | $ 25 | ||||||||||||||||||||
| Carrying amount | 57,500,000 | ||||||||||||||||||||||
| Debt instrument, interest rate, stated percentage | 8.50% | 8.50% | 8.50% | ||||||||||||||||||||
| 8.75% 2025 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Outstanding borrowings | $ 0 | ||||||||||||||||||||||
| 7.25% 2030 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Aggregate principal amount | $ 50,000,000 | ||||||||||||||||||||||
| Net proceeds amount | $ 48.8 | ||||||||||||||||||||||
| Outstanding borrowings | 5,100,000 | ||||||||||||||||||||||
| Outstanding fair value | $ 49,600,000 | $ 49,600,000 | 49,600,000 | ||||||||||||||||||||
| Interest expense | 400,000 | ||||||||||||||||||||||
| Carrying amount | 50,000,000 | 50,000,000 | 50,000,000 | ||||||||||||||||||||
| Offering price rate | 99.117% | ||||||||||||||||||||||
| Placement agent fee and estimated offering expenses | $ 1.2 | ||||||||||||||||||||||
| Fixed interest, description | Interest on the 7.25% 2030 Notes is paid semi-annually in arrears on May 1 and November 1, at a rate of 7.25% per year | ||||||||||||||||||||||
| Integral multiples of excess | $ 1,000 | $ 1,000 | 1,000 | ||||||||||||||||||||
| Deferred financing costs | 30,000.00 | ||||||||||||||||||||||
| 7.75% 2025 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Aggregate principal amount | $ 5,000,000 | ||||||||||||||||||||||
| Net proceeds amount | 4,800,000 | ||||||||||||||||||||||
| Deducting underwriting commissions amount | $ 200,000 | ||||||||||||||||||||||
| Outstanding borrowings | $ 1,800,000 | ||||||||||||||||||||||
| Outstanding fair value | 5,000,000 | ||||||||||||||||||||||
| Financing costs | $ 800,000 | ||||||||||||||||||||||
| Fixed interest, description | Interest on the 7.75% 2025 Notes was paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 7.75% per year. | ||||||||||||||||||||||
| Offering costs | $ 100,000 | ||||||||||||||||||||||
| Debt instrument, interest rate, stated percentage | 7.75% | 7.75% | 7.75% | ||||||||||||||||||||
| 7.50% 2031 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Aggregate principal amount | $ 100,000,000 | $ 100,000,000 | $ 100,000,000 | ||||||||||||||||||||
| Net proceeds amount | 96,400,000 | ||||||||||||||||||||||
| Outstanding borrowings | 100,000,000 | ||||||||||||||||||||||
| Outstanding fair value | 101,700,000 | 101,700,000 | 101,700,000 | ||||||||||||||||||||
| Interest expense | 500,000 | ||||||||||||||||||||||
| Amortization of deferred financing | 0.04 | ||||||||||||||||||||||
| Financing costs | 3,300,000 | ||||||||||||||||||||||
| Carrying amount | 100,000,000 | 100,000,000 | 100,000,000 | ||||||||||||||||||||
| Underwriting discounts | 3,100,000 | ||||||||||||||||||||||
| Offering costs | $ 500,000 | $ 500,000 | $ 500,000 | ||||||||||||||||||||
| Trading symbol per share (in Dollars per share) | $ 25 | ||||||||||||||||||||||
| NYSE par value (in Dollars per share) | $ 25 | ||||||||||||||||||||||
| SBA Debentures [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Outstanding amount | $ 350,000,000 | ||||||||||||||||||||||
| Outstanding borrowings | $ 160,000,000 | 170,000,000 | |||||||||||||||||||||
| Interest expense | $ 5,100,000 | ||||||||||||||||||||||
| Debt instrument, interest rate, stated percentage | 150.00% | 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 | ||||||||||||||||||||||
| Net proceeds amount | 11,600,000 | ||||||||||||||||||||||
| Outstanding borrowings | $ 6,300,000 | 12,000,000 | |||||||||||||||||||||
| Interest expense | 400,000 | ||||||||||||||||||||||
| Amortization of deferred financing | $ 10,000.00 | 10,000.00 | |||||||||||||||||||||
| Financing costs | $ 40,000.00 | ||||||||||||||||||||||
| Fixed interest, description | Interest on the 7.00% 2025 Notes was paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 7.00% per year. | ||||||||||||||||||||||
| Underwriting discounts | $ 400,000 | ||||||||||||||||||||||
| Debt instrument, interest rate, stated percentage | 7.00% | 7.00% | 7.00% | ||||||||||||||||||||
| Aggregate principal amount | $ 12,000,000 | ||||||||||||||||||||||
| 4.375% 2026 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Aggregate principal amount | $ 125,000,000 | $ 50,000,000 | |||||||||||||||||||||
| Net proceeds amount | 123,800,000 | 49,000,000 | |||||||||||||||||||||
| Deducting underwriting commissions amount | $ 1,000,000 | ||||||||||||||||||||||
| Outstanding borrowings | $ 0 | ||||||||||||||||||||||
| Outstanding fair value | $ 163,400,000 | $ 163,400,000 | 163,400,000 | ||||||||||||||||||||
| Interest expense | 7,600,000 | 7,700,000 | |||||||||||||||||||||
| Amortization of premium on issuance | 300,000 | 300,000 | |||||||||||||||||||||
| Fixed interest, description | Interest on the 4.375% 2026 Notes was paid semi-annually in arrears on February 28 and August 28, at a rate of 4.375% per year. | ||||||||||||||||||||||
| Deferred financing costs | $ 800,000 | 600,000 | |||||||||||||||||||||
| Underwriting discounts | 2,500,000 | ||||||||||||||||||||||
| Offering costs | $ 200,000 | ||||||||||||||||||||||
| Debt instrument, interest rate, stated percentage | 4.375% | 4.375% | 4.375% | ||||||||||||||||||||
| Aggregate principal amount | $ 175,000,000 | ||||||||||||||||||||||
| 8.75% 2025 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Outstanding amount | $ 10,000,000 | ||||||||||||||||||||||
| 8.50% 2028 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Outstanding borrowings | 57,500,000 | ||||||||||||||||||||||
| Outstanding fair value | $ 58,100,000 | $ 58,100,000 | 58,100,000 | ||||||||||||||||||||
| Carrying amount | 57,500,000 | 57,500,000 | 57,500,000 | ||||||||||||||||||||
| Level 3 [Member] | 7.25% 2030 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Outstanding borrowings | 50,000,000 | ||||||||||||||||||||||
| Level 3 [Member] | 7.75% 2025 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Outstanding borrowings | 0 | ||||||||||||||||||||||
| Unsecured Notes [Member] | 7.75% 2025 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Outstanding borrowings | 5,000,000 | ||||||||||||||||||||||
| Amortization of deferred financing | 20,000.00 | 50,000.00 | |||||||||||||||||||||
| Unsecured Notes [Member] | 7.50% 2031 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Outstanding borrowings | 6,300,000 | ||||||||||||||||||||||
| Unsecured Notes [Member] | 7.00% 2025 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Outstanding borrowings | 0 | ||||||||||||||||||||||
| Outstanding fair value | $ 11,900,000 | ||||||||||||||||||||||
| Unsecured Notes [Member] | 4.375% 2026 Notes [Member] | |||||||||||||||||||||||
| Borrowings [Line Items] | |||||||||||||||||||||||
| Outstanding borrowings | 175,000,000 | 174,500,000 | |||||||||||||||||||||
| Outstanding fair value | $ 0 | $ 0 | $ 0 | ||||||||||||||||||||