Note 5 - Loans - Loans to Related Parties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Balance at beginning of year	$ 66,593	$ 51,327
Additional loans made	18,580	53,584
Payment received	(37,910)	(38,318)
Balance at end of year	$ 47,263	$ 66,593