Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Securities held to maturity, fair value	$ 5,615	$ 6,577
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)	18,881,829	19,455,544
Common stock, shares outstanding (in shares)	18,881,829	19,455,544