Note O - Derivative - Hedged Asset Amounts (Details) - Residential Portfolio Segment [Member] - USD ($)		Dec. 31, 2023	Dec. 31, 2022
Carrying amount of the hedged asset (1)	[1]	$ 465,495,000	$ 0
Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Fair Value, Cumulative Increase (Decrease)		$ (506,000)	$ 0

[1] This amount represents the amortized cost basis of the closed loan portfolio used to designate the hedging relationship in which the hedged item is the stated amount of assets in the closed portfolio anticipated to be outstanding for the designated hedge period. At December 31, 2023, the amortized cost basis of the closed portfolio used in this hedging relationship was $466.0 million. The cumulative basis adjustment associated with this hedging relationship was $506,000 and the amount of the designated hedged item was $582,000.