Note 14 - Income Taxes (Details) - Components of Deferred Income Tax Assets and Liabilities - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Deferred income tax assets
Deferred directors' fees	$ 174,370	$ 300,102
Allowance for credit losses	2,823,230	2,819,764
Employee benefits	295,387	184,657
Alternative minimum tax credits	347,860	299,278
Other	268,145	49,712
Net operating loss carryovers	4,873,610	6,437,406
Total deferred tax asset	8,782,602	10,090,919
Valuation allowance	(84,650)	(85,023)
	8,697,952	10,005,896
Deferred income tax liabilities
Depreciation and amortization	387,564	121,471
Carrying value – land	366,400	373,000
Mortgage servicing rights	400,151	391,859
Deferred loan origination fees and costs	547,745	326,422
Loan mark-to-market	28,411	41,279
	1,730,271	1,254,031
Net deferred income tax asset	$ 6,967,681	$ 8,751,865