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Note 1 - Unaudited Interim Condensed Consolidated Financial Statements (Details Textual) - Bank of America, N.A. [Member] - USD ($) | Jan. 31, 2024 | Jan. 26, 2024 | Feb. 28, 2022
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Debt Instrument, Face Amount | $ 17,000,000 |  | $ 17,000,000
Line of Credit Facility, Maximum Borrowing Capacity | $ 3,000,000 | $ 500,000 | $ 3,000,000

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