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Note 12 - Employee Benefit Plans - Components of Net Periodic Pension Cost and Assumed Discount Rate (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Service cost $ 0 $ 0 $ 0
Interest cost 414 451 332
Effect of curtailment 0 0 0
Amortization of prior service cost 0 0 0
Amortization of losses 37 38 135
Net periodic cost $ 451 $ 489 $ 467
Assumed discount rate 5.35% 4.79% 4.96%