Note H - Employee Benefit Plans (Details Textual) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Qualified Plan II [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 0.6
Qualified Plan II [Member] | Pension Plan [Member]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	1.6
Restoration Pension Plan [Member]
Defined Benefit Plan, Plan Assets, Benefits Paid	$ 0.9	$ 0.9