Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Available for sale securities, amortized cost	$ 274,312	$ 263,913
Held to maturity securities, far value	11,936	12,649
Allowance for loan losses	20,567	20,363
Bank premises and equipment, accumulated depreciation	$ 18,579	$ 15,830
Preferred stock, no par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares outstanding (in shares)	10,343,416	10,608,869
Common stock, shares issued (in shares)	10,343,416	10,608,869