Note H - Components of Net Periodic Benefit Cost - Net Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest cost	$ 1,473	$ 1,813
Expected return on plan assets	(1,384)	(1,111)
Recognized actuarial loss	812	733
Net periodic benefit cost	$ 901	$ 1,435