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Note 14 - Employee Benefit Plans - Summaries of Changes in Benefit Obligations and Plan Assets and of Funded Status of Pension Plans (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Benefit obligation at beginning of year $ 23,588 $ 24,791
Weighted average asset allocation 100.00% 100.00%
Service cost $ 0 $ 0
Interest cost on projected benefit obligation 1,095 1,236
Actuarial loss (1,541) (54)
Benefits paid (2,248) (2,385)
Benefit obligation at end of year 20,894 23,588
Fair value of plan assets at beginning of year 21,808 22,843
Actual return on plan assets 428 1,334
Company contributions 712 16
Benefits paid (2,248) (2,385)
Fair value of plan assets at end of year 20,700 21,808
Underfunded status of the plans (194) (1,780)
Other assets 994 849
Accrued liabilities (396) (922)
Other liabilities (792) (1,707)
Net amount recognized (194) (1,780)
Projected benefit obligation 14,778 16,654
Accumulated benefit obligation 14,778 16,654
Fair value of plan assets $ 13,591 $ 14,026
Discount rate – projected benefit obligation 5.55% 5.10%
Discount rate – net periodic pension cost 5.10% 5.40%
Minimum [Member]    
Expected long-term rate of return on plan assets 3.15% 2.95%
Maximum [Member]    
Expected long-term rate of return on plan assets 3.75% 3.55%
Equity Securities [Member]    
Weighted average asset allocation 16.00% 17.00%
Debt Securities [Member]    
Weighted average asset allocation 84.00% 83.00%
Other [Member]    
Weighted average asset allocation 0.00% 0.00%