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Note 11 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 18, 2022 | Oct. 17, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 28, 2021 | Dec. 27, 2021 | Nov. 16, 2020 | Aug. 29, 2011
Common Stock, Shares Authorized (in shares) |  |  | 30,000,000 | 30,000,000 | 30,000,000 | 10,000,000 |  |
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares) |  |  |  |  |  |  |  | 540,000
Treasury Stock, Shares, Acquired (in shares) |  |  | 0 | 0 |  |  |  |
Treasury Stock, Common, Shares (in shares) |  |  | 81,584 | 81,584 |  |  |  |
Treasury Stock, Common, Value |  |  | $ 580 | $ 580 |  |  |  |
European Style Warrants [Member] |  |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding (in shares) |  |  |  |  |  |  | 5,258,320 |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 4.75 | $ 12.5 |  |  |  |  |  |
Warrants, Target Trigger Price for Potential Acceleration of Exercise Date (in dollars per share) | $ 6.65 | $ 17.5 |  |  |  |  |  |
Proceeds from Warrant Exercises | $ 4,995 |  |  |  |  |  |  |

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