Note 7 - Other Real Estate Owned ("OREO") (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Real Estate Acquired Through Foreclosure	$ 1,900,000	$ 2,400,000
Real Estate Acquired Through Foreclosure, Decrease from Sale	446,000	991,000
Net Gain (Loss) Recognized on Sale or Acquisition of Other Real Estate	(21,000)	$ (94,000)
Non-interest Expense [Member]
Real Estate Acquired Through Foreclosure, Write-down	$ 48,000