v3.26.1
Stockholders’ Equity - Schedule of Reconciliation of the Changes in Each Significant Caption of Stockholders’ Equity (Details) - Equity ATM Program [Member] - USD ($)
 3 Months Ended 12 Months Ended
Feb. 28, 2026
Nov. 30, 2025
Aug. 31, 2025
May 31, 2025
Feb. 28, 2025
Nov. 30, 2024
Aug. 31, 2024
May 31, 2024
Feb. 29, 2024
Nov. 30, 2023
Aug. 31, 2023
May 31, 2023
Feb. 28, 2026
Feb. 28, 2025
Feb. 29, 2024
Schedule of Reconciliation of the Changes in Each Significant Caption of Stockholders’ Equity [Line Items]                              
Net assets at beginning of year $ 413,206,912 $ 410,499,568 $ 396,369,316 $ 392,665,468 $ 374,865,655 $ 372,053,842 $ 367,855,082 $ 370,224,108 $ 359,558,749 $ 362,078,755 $ 337,450,848 $ 346,958,042 $ 392,665,468 $ 370,224,108 $ 346,958,042
Decrease from Shareholder Distributions:                              
Distributions of investment income (16,169,750) (12,078,766) (11,797,313) (18,980,079) (15,548,742) (10,171,868) (10,137,233) (9,967,036) (9,803,576) (9,286,642) (8,352,335) (8,193,402)      
Capital Share Transactions:                              
Proceeds from issuance of common stock 1,507,265 11,101,844 6,143,820 30,224,602 2,777,426   13,028,770 9,012,500 22,498,117        
Capital contribution from Manager 271,552 297,770 2,152,115 199,652   1,382,009 1,043,000 2,050,288        
Stock dividend distribution 1,785,990 1,281,886 1,289,788 2,312,153 1,857,470 1,214,236 1,018,354 987,572 915,193 858,995 749,313 1,058,844      
Offering costs (3,024) (20,753) (2,080) (208,870) (42,575)   (163,789) (92,240) (213,427)        
Tax reclassification of stockholders’ equity in accordance with generally accepted accounting principles                  
Repurchases of common stock (54,314)                     (2,157,605)      
Repurchase fees                       (1,772)      
Net assets at end of year 396,155,754 413,206,912 410,499,568 396,369,316 392,665,468 374,865,655 372,053,842 367,855,082 370,224,108 359,558,749 362,078,755 337,450,848 $ 396,155,754 $ 392,665,468 $ 370,224,108
Increase (Decrease) from Operations:                              
Net investment income 7,797,648 9,786,386 9,080,732 10,142,033 8,034,545 12,435,655 18,197,398 14,335,005 12,784,511 14,166,063 13,964,784 15,958,950      
Net realized gain (loss) from investments (278,087) 3,070,547 52,691 2,901,339 7,169,655 5,444,745 (33,448,727) (21,194,997) 2,327 60,565   90,691      
Net change in unrealized appreciation (depreciation) on investments (9,326,511) (583,659) 3,727,713 943,977 (14,766,637) (8,918,583) 28,728,155 13,931,431 (7,164,613) (17,866,353) (5,737,571) (16,322,307)      
Net change in provision for deferred taxes on unrealized (appreciation) depreciation on investments (105,281) (150,134) 423,998 (55,085) (313,873) $ (126,875) $ (159,187) $ (461,001) $ (315,473) $ (415,894) (221,206) $ 59,407      
Realized losses on extinguishment of debt (700,853) (123,157) (800,452)           $ (110,056)        
Income tax (provision) benefit from realized gain on investments                    
Common Stock [Member]                              
Schedule of Reconciliation of the Changes in Each Significant Caption of Stockholders’ Equity [Line Items]                              
Common stock, shares outstanding (in Shares) 16,145,398 16,027,312 15,529,391 15,183,078 13,909,206 13,745,769 13,698,966 13,653,476 13,114,977 12,729,781 11,847,742 11,890,500 15,183,078 13,653,476 11,890,500
Net assets at beginning of year $ 16,145 $ 16,027 $ 15,529 $ 15,183 $ 13,909 $ 13,746 $ 13,699 $ 13,654 $ 13,115 $ 12,730 $ 11,848 $ 11,891 $ 15,183 $ 13,654 $ 11,891
Decrease from Shareholder Distributions:                              
Distributions of investment income      
Capital Share Transactions:                              
Proceeds from issuance of common stock (in Shares)   58,962 443,406 244,831 1,192,400 108,438     501,105 350,000 852,412        
Proceeds from issuance of common stock $ 59 $ 443 $ 245 $ 1,193 $ 108   $ 501 $ 350 $ 852        
Capital contribution from Manager          
Stock dividend distribution (in Shares) 81,295 59,124 54,515 101,482 81,472 54,999 46,803 45,490 37,394 35,196 29,627 45,818      
Stock dividend distribution $ 81 $ 59 $ 55 $ 101 $ 81 $ 55 $ 47 $ 45 $ 38 $ 35 $ 30 $ 47      
Offering costs          
Tax reclassification of stockholders’ equity in accordance with generally accepted accounting principles                  
Repurchases of common stock (in Shares) (2,495)                     (88,576)      
Repurchases of common stock $ (2)                     $ (90)      
Repurchase fees                            
Common stock, shares outstanding (in Shares) 16,224,198 16,145,398 16,027,312 15,529,391 15,183,078 13,909,206 13,745,769 13,698,966 13,653,476 13,114,977 12,729,781 11,847,742 16,224,198 15,183,078 13,653,476
Net assets at end of year $ 16,224 $ 16,145 $ 16,027 $ 15,529 $ 15,183 $ 13,909 $ 13,746 $ 13,699 $ 13,654 $ 13,115 $ 12,730 $ 11,848 $ 16,224 $ 15,183 $ 13,654
Increase (Decrease) from Operations:                              
Net investment income      
Net realized gain (loss) from investments        
Net change in unrealized appreciation (depreciation) on investments      
Net change in provision for deferred taxes on unrealized (appreciation) depreciation on investments      
Realized losses on extinguishment of debt                  
Income tax (provision) benefit from realized gain on investments                    
Capital in Excess of Par Value [Member]                              
Schedule of Reconciliation of the Changes in Each Significant Caption of Stockholders’ Equity [Line Items]                              
Net assets at beginning of year 437,092,856 434,306,847 421,664,914 412,913,597 377,235,609 373,087,033 372,068,726 371,081,199 356,698,595 345,876,725 320,793,316 321,893,806 412,913,597 371,081,199 321,893,806
Decrease from Shareholder Distributions:                              
Distributions of investment income      
Capital Share Transactions:                              
Proceeds from issuance of common stock 1,507,206 11,101,401 6,143,575 30,223,409 2,777,318   13,028,269 9,012,150 22,497,265        
Capital contribution from Manager 271,552 297,770 2,152,115 199,652   1,382,009 1,043,000 2,050,288        
Stock dividend distribution 1,785,909 1,281,827 1,289,733 2,312,052 1,857,389 1,214,181 1,018,307 987,527 915,155 858,960 749,283 1,058,797      
Offering costs (3,024) (20,753) (2,080) (208,870) (42,575)   (163,789) (92,240) (213,427)        
Tax reclassification of stockholders’ equity in accordance with generally accepted accounting principles 378,024   1,653,945       (779,040)            
Repurchases of common stock (54,312)                     (2,157,515)      
Repurchase fees                       (1,772)      
Net assets at end of year 439,202,477 437,092,856 434,306,847 421,664,914 412,913,597 377,235,609 373,087,033 372,068,726 371,081,199 356,698,595 345,876,725 320,793,316 439,202,477 412,913,597 371,081,199
Increase (Decrease) from Operations:                              
Net investment income      
Net realized gain (loss) from investments        
Net change in unrealized appreciation (depreciation) on investments      
Net change in provision for deferred taxes on unrealized (appreciation) depreciation on investments      
Realized losses on extinguishment of debt                  
Income tax (provision) benefit from realized gain on investments                    
Total Distributable Earnings (Loss) [Member]                              
Schedule of Reconciliation of the Changes in Each Significant Caption of Stockholders’ Equity [Line Items]                              
Net assets at beginning of year (23,902,089) (23,823,306) (25,311,127) (20,263,312) (2,383,863) (1,046,937) (4,227,343) (870,745) 2,847,039 16,189,300 16,645,684 25,052,345 (20,263,312) (870,745) 25,052,345
Decrease from Shareholder Distributions:                              
Distributions of investment income (16,169,750) (12,078,766) (11,797,313) (18,980,079) (15,548,742) (10,171,868) (10,137,233) (9,967,036) (9,803,576) (9,286,642) (8,352,335) (8,193,402)      
Capital Share Transactions:                              
Proceeds from issuance of common stock          
Capital contribution from Manager          
Stock dividend distribution      
Offering costs          
Tax reclassification of stockholders’ equity in accordance with generally accepted accounting principles (378,024) (1,653,945)       779,040            
Repurchases of common stock                          
Repurchase fees                            
Net assets at end of year (43,062,947) (23,902,089) (23,823,306) (25,311,127) (20,263,312) (2,383,863) (1,046,937) (4,227,343) (870,745) 2,847,039 16,189,300 16,645,684 $ (43,062,947) $ (20,263,312) $ (870,745)
Increase (Decrease) from Operations:                              
Net investment income 7,797,648 9,786,386 9,080,732 10,142,033 8,034,545 12,435,655 18,197,398 14,335,005 12,784,511 14,166,063 13,964,784 15,958,950      
Net realized gain (loss) from investments (278,087) 3,070,547 52,691 2,901,339 7,169,655 5,444,745 (33,448,727) (21,194,997) 2,327 60,565   90,691      
Net change in unrealized appreciation (depreciation) on investments (9,326,511) (583,659) 3,727,713 943,977 (14,766,637) (8,918,583) 28,728,155 13,931,431 (7,164,613) (17,866,353) (5,737,571) (16,322,307)      
Net change in provision for deferred taxes on unrealized (appreciation) depreciation on investments (105,281) (150,134) 423,998 (55,085) (313,873) $ (126,875) $ (159,187) $ (461,001) $ (315,473) $ (415,894) (221,206) $ 59,407      
Realized losses on extinguishment of debt (700,853) (123,157) (800,452)           $ (110,056)        
Income tax (provision) benefit from realized gain on investments