Note 4 - Loans (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Bank Overdrafts	$ 2,200	$ 1,790
Deferred Loan Fees	4,600	$ 4,600
Highlands Bankshares, Inc. [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Ending Balance	8,150
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	53,120
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	$ 76,450