Note D - Leases (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Lease, Cost	$ 1,195	$ 1,220
Selling, General and Administrative Expenses [Member]
Lease, Cost	$ 1,200	$ 1,200	$ 1,300