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Note 14 - Employee Benefit Plans - Summary of Fair Values of Pension Plan Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Fair value of plan assets | $ 20,259 | $ 20,700 | $ 21,808
Fair Value, Inputs, Level 1 [Member] |  |  |
Fair value of plan assets | 9,840 | 10,381 |
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member] |  |  |
Fair value of plan assets | 2,153 | 2,245 |
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Equity Securities, US, Large Cap [Member] |  |  |
Fair value of plan assets | 1,203 | 2,171 |
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Equity Securities, US, Mid Cap [Member] |  |  |
Fair value of plan assets | 378 | 337 |
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Equity Securities, US, Small Cap [Member] |  |  |
Fair value of plan assets | 156 | 124 |
Fair Value, Inputs, Level 1 [Member] | Defined Benefit Plan, Equity Securities, Non-US [Member] |  |  |
Fair value of plan assets | 842 | 739 |
Fair Value, Inputs, Level 1 [Member] | Fixed Income Securities [Member] |  |  |
Fair value of plan assets | 5,108 | 4,765 |
Fair Value, Inputs, Level 2 [Member] |  |  |
Fair value of plan assets | 10,419 | 10,319 |
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Equity Securities, US, Large Cap [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Equity Securities, US, Mid Cap [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Equity Securities, US, Small Cap [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Defined Benefit Plan, Equity Securities, Non-US [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities [Member] |  |  |
Fair value of plan assets | $ 10,419 | $ 10,319 |

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