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Note 10 - Equity (Details Textual) - USD ($) |  |  |  |  | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 03, 2026 | Jan. 28, 2026 | Jan. 05, 2026 | Feb. 03, 2025 | Mar. 31, 2026 | Mar. 31, 2025 | Dec. 31, 2025 | Nov. 21, 2025 | Aug. 13, 2025 | Aug. 12, 2025
Proceeds from Issuance of Common Stock |  |  |  |  | $ 60,979,181 | $ 0 |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  |  |  |  |  | 1,839,390 |  |  |  |
Proceeds From Issuance of Common Stock, Net of Issuance Costs | $ 6,937,498 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, New Issues |  |  |  |  | $ 60,979,181 |  |  |  |  |
Share Price (in dollars per share) |  |  |  |  | $ 3.05 | $ 2.44 | $ 3.76 |  | $ 3.17 | $ 3.17
Class of Warrant or Right, Exercises (in shares) |  |  |  |  | 0 | 0 |  |  |  |
Class of Warrant or Right, Expired (in shares) |  |  |  |  | 0 | 0 |  |  |  |
Conversion of Kips Bay Note 2025 to Common Stock [Member] | Registered Stock [Member] |  |  |  |  |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued (in shares) |  |  |  | 66,035 |  |  |  |  |  |
Stock Issued, Percentage of Principal of Debt |  |  |  | 3.00% |  |  |  |  |  |
Nonemployee Directors [Member] |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Issued for Services (in shares) |  |  | 463,721 |  |  |  |  |  |  |
Stock Issued During Period, Value, New Issues |  |  | $ 1,864,159 |  |  |  |  |  |  |
Share Price (in dollars per share) |  |  | $ 4.02 |  |  |  |  |  |  |
Confidentially Marketed Public Offering [Member] |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Common Stock | $ 7,499,998 | $ 50,000,002 |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 2,727,272 | 18,181,819 |  |  |  |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) | $ 2.75 | $ 2.75 |  |  |  |  |  |  |  |
Proceeds From Issuance of Common Stock, Net of Issuance Costs |  | $ 46,140,002 |  |  |  |  |  |  |  |
Titan At The Market Offering Agreement 2025 [Member] |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  |  |  |  | 872,838 |  | 589,243 |  |  |
Shares Issued, Price Per Share (in dollars per share) |  |  |  |  | $ 3.99 |  | $ 3.77 |  |  |
Stock Issued During Period, Value, New Issues |  |  |  |  | $ 3,479,179 |  | $ 2,221,513 |  |  |
Equity Offering, Maximum Amount |  |  |  |  |  |  |  | $ 100,000,000 |  |
Equity Offering, Remaining Capacity Amount |  |  |  |  | $ 96,400,000 |  |  |  |  |

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