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Note 17 - At Market Agreement (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 2 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 18, 2023 | Mar. 04, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  | $ 0.01 | $ 0.01
Stock Issued During Period, Value, New Issues |  |  | $ 7,318 |
At Market Offering [Member] | B. Riley Securities, Inc. [Member] |  |  |  |
Equity Sales Agreement, Maximum Aggregate Gross Proceeds | $ 50,000 |  |  |
ATM Offering, Notice for Termination (Day) | 5 days |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 794,000 | 710,623 |  |
Stock Issued During Period, Value, New Issues |  | $ 6,600 | $ 7,300 |

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