Consolidated Statements of Condition (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Amortized Cost	$ 379,195	$ 397,926
Held to maturity securities, fair value	$ 138,523	$ 180,050
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	15,000,000	15,000,000
Common stock, shares issued (in shares)	4,661,686	4,678,186
Common stock, shares outstanding (in shares)	4,661,686	4,678,186