Consolidated Statements of Condition (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Held to maturity securities, fair value	$ 50,229	$ 53,130
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)	4,893,061	4,943,186
Common stock, shares outstanding (in shares)	4,893,061	4,943,186