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Note H - Employee Benefit Plans - Recognized in Balance Sheet (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Pensions $ 67,490 $ 70,000
Pension Plan [Member]    
Other current liabilities 1,748 1,715
Pensions 67,490 70,000
Total $ 69,238 $ 71,715