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Note 16 - Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Nov. 01, 2022 | Mar. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Dividends Payable, Date Declared |  | Mar. 31, 2023 |  |
Dividends Payable, Amount Per Share (in dollars per share) |  | $ 0.0625 |  |
Preferred Stock, Shares Authorized (in shares) |  |  | 500,000 | 500,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) |  |  | $ 25 | $ 25
Preferred Stock, Shares Issued (in shares) |  |  | 0 | 0
Stock Repurchase Program 2019 [Member] |  |  |  |
Stock Repurchase Program, Authorized Amount | $ 30 |  |  |
Stock Repurchase Program, Period in Force (Month) | 20 months |  |  |

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