Note 6 - Other Real Estate Owned - Reconciliation of Other Real Estate Owned (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Beginning Balance	$ 6,223	$ 6,966	$ 10,174
Additions	1,225	315	291
Valuation adjustments	(646)	(563)	(3,000)
Dispositions	(5,072)	(495)	(499)
Ending Balance	$ 1,730	$ 6,223	$ 6,966