Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
HTM, allowance for credit losses	$ 0	$ 0
HTM, fair value	170,589,274	161,463,573
Held for investment, allowance for credit loss	$ 12,283,325	$ 11,177,753
Preferred Stock, par value (in dollars per share)	$ 1,000	$ 1,000
Preferred Stock, Shares Authorized (in shares)	82,949	82,949
Preferred Stock, Shares Issued (in shares)	82,949	82,949
Preferred Stock, Shares Outstanding (in shares)	82,949	82,949
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares, authorized (in shares)	5,000,000	5,000,000
Common Stock, Shares, issued (in shares)	3,454,669	3,453,817
Common Stock, Shares, outstanding (in shares)	3,253,736	3,252,884
Treasury stock, shares (in shares)	200,933	200,933