Note 5 - Loans and Allowance for Loan Losses - Loans to Related Parties (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Balance, beginning of period	$ 96,390	$ 98,093
New loans	9,937	12,443
Repayments and changes in relationship	(10,238)	(14,146)
Balance, end of period	$ 96,089	$ 96,390