Note H - Employee Benefit Plans - Net Period of Net Periodic Cost (Details) - Pension Plan [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest cost	$ 1,772	$ 1,260	$ 5,316	$ 3,780
Expected return on plan assets	(1,554)	(1,468)	(4,662)	(4,404)
Recognized actuarial loss	630	719	1,890	2,157
Net periodic benefit cost	$ 848	$ 511	$ 2,544	$ 1,533