Consolidated Statements of Financial Condition (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Loans, allowance for credit losses	$ 12,279	$ 14,193
Preferred shares, par value (in dollars per share)	$ 1.25	$ 1.25
Preferred shares, authorized (in shares)	20,000,000	20,000,000
Preferred shares, issued (in shares)	0	0
Preferred shares, outstanding (in shares)	0	0
Common shares, par value (in dollars per share)	$ 1.25	$ 1.25
Common shares, authorized (in shares)	50,000,000	50,000,000
Common shares, issued (in shares)	19,683,873	19,681,644
Common shares, outstanding (in shares)	19,683,873	19,681,644