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Note 10 - Stockholders' Equity (Details Textual) - USD ($) |  |  |  |  | 2 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 12, 2024 | Sep. 27, 2024 | Jun. 24, 2024 | Jan. 03, 2024 | Nov. 12, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2013 | Dec. 31, 2023
Common Stock, Shares Authorized (in shares) |  |  |  |  |  | 50,000,000 |  |  | 50,000,000 |  |  | 50,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  |  |  |  | $ 0.001 |  |  | $ 0.001 |  |  | $ 0.001
Common Stock, Shares, Issued (in shares) |  |  |  |  |  | 5,848,499 |  |  | 5,848,499 |  |  | 5,727,310
Share-Based Payment Arrangement, Amount Withheld for Tax Withholding Obligation |  |  |  |  |  |  | $ 104,940 |  |  |  |  |
Common Stock, Shares, Outstanding (in shares) |  |  |  |  |  | 5,848,499 |  |  | 5,848,499 |  |  | 5,727,310
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  |  |  |  | 311,154 |  |  |
Share-Based Payment Arrangement, Expense |  |  |  |  |  | $ 166,617 |  | $ 143,195 | $ 521,791 | $ 494,292 |  |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount |  |  |  |  |  | $ 816,505 |  |  | $ 816,505 |  |  |
Restricted Stock Units (RSUs) [Member] | The 2022 Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  |  |  |  | 353,471 |  |  |
Prefunded Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  | 555,302 |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  | $ 0.001 |  |  |  |  |  |  |  |  |  |
Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  | 584,529 |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  | $ 2 |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 3,630,129 |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance or Sale of Equity |  |  |  |  | $ 10,000,000 |  |  |  |  |  |  |
Equity Issued, Number of Common Stock Per Issue (in shares) |  | 1 |  |  |  |  |  |  |  |  |  |
Equity Issued, Price Per Share (in dollars per share) |  | $ 2 |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance or Sale of Equity |  | $ 10,000,000 |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Equity Issued, Price Per Share (in dollars per share) |  | $ 1.999 |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement [Member] | Prefunded Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  | 1,369,871 |  |  |  |  |  |  |  |  |  |
Equity Issued, Number of Warrants Per Issue (in shares) |  | 1 |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement [Member] | Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  | 5,000,000 |  |  |  |  |  |  |  |  |  |
Equity Issued, Number of Warrants Per Issue (in shares) |  | 1 |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) |  | 1 |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 29,227 |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance or Sale of Equity |  | $ 1,200,000 |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement, Tranche One [Member] | Prefunded Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  | 555,302 |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement, Tranche One [Member] | Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  | 584,529 |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement, Tranche Two [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 3,600,902 |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement, Tranche Two [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 3,600,902 |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance or Sale of Equity | $ 8,800,000 |  |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement, Tranche Two [Member] | Prefunded Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  | 814,569 |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement, Tranche Two [Member] | Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  | 4,415,471 |  |  |  |  |  |  |  |  |  |
Director [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares) |  |  |  | 24,500 |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures |  |  |  | $ 73,500 |  |  |  |  |  |  |  |
Director [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  |  |  |  | 52,082 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Annual Grant |  |  |  |  |  |  |  |  |  |  | $ 36,750 |
Management [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares) |  |  | 11,932 | 85,528 |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures |  |  | $ 36,750 | $ 289,672 |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares) |  |  |  | 29,998 |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Amount Withheld for Tax Withholding Obligation |  |  |  | $ 104,940 |  |  |  |  |  |  |  |
Board of Directors Chairman [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Annual Grant |  |  |  |  |  |  |  |  |  |  | $ 73,500 |

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