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Note 15 - Stockholders' Equity (Details Textual) - USD ($) $ in Millions |  |  | 1 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 06, 2022 | Apr. 28, 2022 | Nov. 30, 2022 | May 31, 2022 | Mar. 31, 2022 | Aug. 31, 2022 | Jun. 17, 2022 | Jun. 16, 2022 | Feb. 15, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) |  |  |  |  |  |  | 50,000,000 | 300,000,000 |
Treasury Stock, Value, Acquired, Cost Method |  |  |  |  |  | $ 15.0 |  |  |
Stock Buyback Plan [Member] |  |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  |  |  | $ 10.0
Treasury Stock, Value, Acquired, Cost Method |  |  | $ 2.5 | $ 5.0 | $ 10.0 |  |  |  |
Stock Repurchase Program, Authorized Amount, Addition | $ 2.5 | $ 5.0 |  |  |  |  |  |  |

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