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Note 10 - Employee Benefit Plans - Components of Net Periodic Pension Cost and Assumed Discount Rate (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Service cost $ 0 $ 88
Interest cost 83 79
Amortization of prior service cost 0 31
Amortization of losses 34 66
Net periodic cost $ 117 $ 264