Note 7 - Other Real Estate Owned (Details) - Changes in Other Real Estate Owned - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Changes in Other Real Estate Owned [Abstract]
Beginning balance	$ 7,755,541	$ 9,354,000
Additions	991,000	1,566,000
Sales, net	(2,427,000)	(2,960,000)
Fair value adjustments	(195,000)	(204,000)
Ending balance	$ 6,125,054	$ 7,755,541