Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Securities held to maturity, fair value	$ 4,750	$ 5,563
Unamortized debt issuance costs	$ 981	$ 1,415
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, no par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued (in shares)	18,995,303	18,965,776
Common stock, shares outstanding (in shares)	18,995,303	18,965,776