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Note 14 - Employee Benefit Plans - Components of Pension Expense (Benefit) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Service cost $ 5 $ 4
Interest cost on projected benefit obligation 839 774
Net amortization of actuarial loss 560 613
Expected return on plan assets (837) (773)
Net periodic benefit cost $ 567 $ 618