Note H - Employee Benefit Plans - Net Period of Net Periodic Cost (Details) - Pension Plan [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Interest cost	$ 1,168	$ 1,168
Expected return on plan assets	(1,688)	(1,688)
Recognized actuarial loss	860	860
Net periodic benefit cost	$ 340	$ 340