Note 7 - Other Real Estate Owned - Gross Gains, Gross Losses and Write-downs of OREO (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Gross gains	$ 0	$ 27,000	$ 0	$ 27,000