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Note 14 - Employee Benefit Plans - Summary of Fair Values of Pension Plan Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Fair value of plan assets | $ 22,843 | $ 30,051 | $ 32,353
Fair Value, Inputs, Level 1 [Member] |  |  |
Fair value of plan assets | 11,339 | 14,910 |
Fair Value, Inputs, Level 2 [Member] |  |  |
Fair value of plan assets | 11,504 | 15,141 |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Fair value of plan assets | 2,365 | 2,371 |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Defined Benefit Plan, Equity Securities, US, Large Cap [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Fair value of plan assets | 1,671 | 2,008 |
Defined Benefit Plan, Equity Securities, US, Large Cap [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Defined Benefit Plan, Equity Securities, US, Mid Cap [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Fair value of plan assets | 566 | 863 |
Defined Benefit Plan, Equity Securities, US, Mid Cap [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Defined Benefit Plan, Equity Securities, US, Small Cap [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Fair value of plan assets | 209 | 169 |
Defined Benefit Plan, Equity Securities, US, Small Cap [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Defined Benefit Plan, Equity Securities, Non-US [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Fair value of plan assets | 1,194 | 1,733 |
Defined Benefit Plan, Equity Securities, Non-US [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Real Estate [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Fair value of plan assets | 210 | 405 |
Real Estate [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Other Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Fair value of plan assets | 106 | 547 |
Other Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair value of plan assets | 0 | 0 |
Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Fair value of plan assets | 5,018 | 6,814 |
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair value of plan assets | $ 11,504 | $ 15,141 |

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