Note P - Fair Value Measurements and Disclosures - Assets Measured at Fair Value on Non-Recurring Basis of Other Real Estate (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other real estate	$ 7,453	$ 8,943
Fair Value, Inputs, Level 1 [Member]
Other real estate
Fair Value, Nonrecurring [Member]
Other real estate	7,453	8,943
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Other real estate	$ 7,453	$ 8,943