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Note H - Employee Benefit Plans - Accumulated Benefit of Obligation in Excess of Plan Asset (Details) - Pension Plan [Member] - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Projected benefit obligation $ 186,041 $ 198,586
Accumulated benefit obligation 186,041 198,586
Fair value of plan assets $ 131,741 $ 129,348