Note 4 - Loans - Loans to Related Parties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Balance at beginning of year	$ 43,952	$ 47,263
Additional loans made	23,102	19,036
Payment received	(15,766)	(22,347)
Balance at end of year	$ 51,288	$ 43,952