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Note 8 - Employee Benefit Plans - Fair Value of Plan Assets By Fair Value Hierarchy (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Defined Benefit Plan, Fair Value of Plan | $ 15,179 | $ 16,940
Fair Value, Inputs, Level 1 [Member] |  |
Defined Benefit Plan, Fair Value of Plan | 402 | 304
Fair Value, Inputs, Level 2 [Member] |  |
Defined Benefit Plan, Fair Value of Plan | 14,777 | 16,636
Fair Value, Inputs, Level 3 [Member] |  |
Defined Benefit Plan, Fair Value of Plan | $ 0 | $ 0

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