Note 4 - Loans - Loans to Related Parties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Balance at beginning of year	$ 47,263	$ 66,593
Additional loans made	19,036	18,580
Payment received	(22,347)	(37,910)
Balance at end of year	$ 43,952	$ 47,263