Note H - Employee Benefit Plans - Net Period of Net Periodic Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Adjustment to pension liabilities	$ (10,274)	$ (14,150)
Net cost recognized in net periodic benefit cost and other comprehensive income	(8,230)	(12,789)
Pension Plan [Member]
Interest cost	5,040	4,674
Expected return on plan assets	(5,872)	(6,754)
Recognized actuarial loss	2,876	3,441
Net periodic benefit cost	$ 2,044	$ 1,361