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Note 1 - Nature of Operations and Summary of Significant Accounting Policies - Activity in the Allowance for Credit Losses (Details) - Trade Accounts Receivable [Member] - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Balance | $ 15,914 |  | $ 14,060 | $ 74,404
Current period provision for expected credit losses | (1,430) |  | 3,305 | 414
Acquisition of Sonatide joint venture |  |  |  | (59,678)
Other | (331) |  | (457) | (1,080)
Write offs | (10,969) | [1] | (1,484) |
Recoveries |  |  | 490 |
Balance | $ 3,184 |  | $ 15,914 | $ 14,060
[1] | Primarily the write off of the remaining balance due from our Nigerian joint venture.

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