Note C - Loans - Total Loans on Nonaccrual (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Total loans on nonaccrual	$ 9,266	$ 8,250
Real Estate, Construction [Member]
Total loans on nonaccrual	515	1,439
Real Estate, Mortgage [Member]
Total loans on nonaccrual	8,495	4,954
Commercial And Industrial Loan [Member]
Total loans on nonaccrual	256	1,855
Other Loan [Member]
Total loans on nonaccrual		$ 2