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Note 8 - Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2025
Notes Tables |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] |
|  | December 31, |
|  | 2025 |  |  | 2024 |
Change in benefit obligation |  |  |  |  |  |
Projected benefit obligation at beginning of year |  | $ | 26,060 |  |  | $ | 25,750 |
Service cost (1) |  |  | 991 |  |  |  | 1,042 |
Interest cost (2) |  |  | 1,294 |  |  |  | 1,206 |
Actuarial loss (gain)(3) |  |  | 808 |  |  |  | (842 | )
Benefits paid |  |  | (3,673 | ) |  |  | (1,096 | )
Settlement gain |  |  | (33 | ) |  |  | - |
Projected benefit obligation at end of year |  | $ | 25,447 |  |  | $ | 26,060 |
Change in plan assets |  |  |  |  |  |
Fair value of plan assets at beginning of year |  | $ | 39,208 |  |  | $ | 32,509 |
Actual return on plan assets |  |  | 4,828 |  |  |  | 4,795 |
Employer contribution |  |  | - |  |  |  | 3,000 |
Benefits paid |  |  | (3,673 | ) |  |  | (1,096 | )
Fair value of plan assets at end of year |  | $ | 40,363 |  |  | $ | 39,208 |
Funded status at the end of the year |  | $ | 14,916 |  |  | $ | 13,148 |
Amounts recognized in the Consolidated Balance Sheet |  |  |  |  |  |
Deferred tax liabilities |  | $ | (3,132 | ) |  | $ | (2,761 | )
Other assets |  |  | 14,916 |  |  |  | 13,148 |
Total amounts recognized in the Consolidated Balance Sheet |  | $ | 11,784 |  |  | $ | 10,387 |
Amounts recognized in accumulated other comprehensive loss, net |  |  |  |  |  |
Net gain |  | $ | 1,633 |  |  | $ | 415 |
Deferred tax liability |  |  | (343 | ) |  |  | (87 | )
Amount recognized |  | $ | 1,290 |  |  | $ | 328 |
Accrued/Prepaid benefit cost, net |  |  |  |  |  |
Benefit obligation |  | $ | (25,447 | ) |  | $ | (26,060 | )
Fair value of assets |  |  | 40,363 |  |  |  | 39,208 |
Unrecognized net actuarial gain |  |  | (1,633 | ) |  |  | (415 | )
Deferred tax liability |  |  | (2,789 | ) |  |  | (2,674 | )
Prepaid pension cost included in other assets |  | $ | 10,494 |  |  | $ | 10,059 |
|  | For the Year Ended December 31, |
Components of net periodic pension benefit |  | 2025 |  |  | 2024 |
Service cost(1) |  | $ | 991 |  |  | $ | 1,042 |
Interest cost(2) |  |  | 1,294 |  |  |  | 1,206 |
Expected return on plan assets(2) |  |  | (2,768 | ) |  |  | (2,431 | )
Recognized net actuarial gain due to settlement(2) |  |  | (68 | ) |  |  | - |
Recognized net actuarial loss(2) |  |  | - |  |  |  | 134 |
Net periodic benefit |  | $ | (551 | ) |  | $ | (49 | )
Other changes in plan assets and benefit obligations recognized in other comprehensive income |  |  |  |  |  |
Net gain |  | $ | (1,217 | ) |  | $ | (3,339 | )
Deferred income tax expense |  |  | 255 |  |  |  | 701 |
Total recognized |  | $ | (962 | ) |  | $ | (2,638 | )
Total recognized in net periodic benefit and other comprehensive income |  | $ | (1,768 | ) |  | $ | (3,388 | )
Weighted average assumptions at end of the year |  |  |  |  |  |
Discount rate used for net periodic pension cost |  |  | 5.50 | % |  |  | 4.75 | %
Discount rate used for disclosure |  |  | 5.25 | % |  |  | 5.50 | %
Expected return on plan assets |  |  | 7.50 | % |  |  | 7.50 | %
Rate of compensation increase |  |  | 4.00 | % |  |  | 4.00 | %
Schedule of Defined Benefit Plans, Components of Actuarial (Gain) Loss [Table Text Block] |
|  | For the Year Ended December 31, |
Components of actuarial gain |  | 2025 |  |  | 2024 |
(Gain) loss due to demographic changes |  | $ | (123 | ) |  | $ | 727 |
Loss (gain) due to change in discount rate |  |  | 931 |  |  |  | (2,691 | )
Loss due to change in rate of compensation increase |  |  | - |  |  |  | 1,122 |
Actuarial loss (gain) |  |  | 808 |  |  |  | (842 | )
Gain due to asset return |  |  | (2,060 | ) |  |  | (2,364 | )
Actuarial gain with asset return |  | $ | (1,252 | ) |  | $ | (3,206 | )
Schedule of Allocation of Plan Assets [Table Text Block] |
|  | Fair Value Measurements as of December 31, 2025 |
Asset Category |  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Cash |  | $ | 1,828 |  |  | $ | 1,828 |  |  | $ | - |  |  | $ | - |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |
U. S. companies |  |  | 22,282 |  |  |  | 22,282 |  |  |  | - |  |  |  | - |
International companies |  |  | 360 |  |  |  | 360 |  |  |  | - |  |  |  | - |
Equities mutual funds (1) |  |  | 4,990 |  |  |  | 4,990 |  |  |  | - |  |  |  | - |
State and political subdivisions |  |  | 50 |  |  |  | - |  |  |  | 50 |  |  |  | - |
Corporate bonds – investment grade (2) |  |  | 10,853 |  |  |  | - |  |  |  | 10,853 |  |  |  | - |
Total pension plan assets |  | $ | 40,363 |  |  | $ | 29,460 |  |  | $ | 10,903 |  |  | $ | - |
|  | Fair Value Measurements as of December 31, 2024 |
Asset Category |  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Cash |  | $ | 1,228 |  |  | $ | 1,228 |  |  | $ | - |  |  | $ | - |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |
U. S. companies |  |  | 21,373 |  |  |  | 21,373 |  |  |  | - |  |  |  | - |
International companies |  |  | 200 |  |  |  | 200 |  |  |  | - |  |  |  | - |
Equities mutual funds (1) |  |  | 6,532 |  |  |  | 6,532 |  |  |  | - |  |  |  | - |
State and political subdivisions |  |  | 50 |  |  |  | - |  |  |  | 50 |  |  |  | - |
Corporate bonds – investment grade (2) |  |  | 9,825 |  |  |  | - |  |  |  | 9,825 |  |  |  | - |
Total pension plan assets |  | $ | 39,208 |  |  | $ | 29,333 |  |  | $ | 9,875 |  |  | $ | - |
Schedule of Expected Benefit Payments [Table Text Block] |
Year |  | Estimated Benefit Payment |
2026 |  | $ | 2,549 |
2027 |  |  | 1,810 |
2028 |  |  | 1,849 |
2029 |  |  | 3,080 |
2030 |  |  | 1,065 |
2031 - 2035 |  |  | 12,081 |

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