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Note 15 - Stockholders' Equity (Details Textual) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 10 Months Ended | 15 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2025 | Oct. 31, 2024 | Sep. 30, 2024 | Aug. 31, 2024 | Mar. 31, 2024 | May 31, 2025 | May 31, 2024 | May 31, 2025 | May 31, 2024 | May 31, 2025 | May 31, 2025 | Jul. 31, 2024
Treasury Stock, Shares, Acquired (in shares) | 3,927 | 35,678 | 506 | 291,141 | 21,905 |  |  |  |  |  | 353,157 |
Treasury Stock, Value, Acquired, Cost Method | $ 54,940 | $ 499,997 | $ 5,695 | $ 2,994,296 | $ 253,003 | $ 55,000 | $ 253,000 | $ 55,000 | $ 253,000 |  | $ 3,807,931 |
Stock Buyback Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Repurchase Program, Authorized, Amount |  |  |  |  |  |  |  |  |  |  |  | $ 10,000,000
Treasury Stock, Shares, Acquired (in shares) |  |  |  |  |  | 3,927 |  |  |  | 353,157,000,000 |  |
Treasury Stock, Value, Acquired, Cost Method |  |  |  |  |  | $ 50,000.00 |  |  |  | $ 3,800,000 |  |

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