Note 20 - Condensed Parent Company Statements (Details) - Statements of Income - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest expense:
Other									$ 2,847,180	$ 2,782,019	$ 2,775,979
Income (loss) before income taxes and equity in undistributed income (loss) of subsidiaries	$ 1,985,622	$ 2,040,386	$ 2,234,107	$ 1,917,981	$ 2,218,507	$ 1,627,213	$ 1,631,749	$ 1,532,256	8,178,096	7,895,204	7,755,748
Credit for income taxes	$ 554,983	$ 621,751	$ 696,158	$ 588,437	436,403	266,730	293,066	230,830	2,461,329	2,112,508	2,516,041
Net income					$ 1,782,104	$ 1,360,483	$ 1,338,683	$ 1,301,426	5,716,767	5,782,696	5,239,707
Parent Company [Member]
Income
Dividends from subsidiary bank									0	0	4,003,250
Interest income:
Other									16,200	16,069	16,152
									16,200	16,069	4,019,402
Interest expense:
Related party									538,785	533,207	537,178
Other									734,780	765,848	815,865
									1,273,565	1,299,055	1,353,043
Income (loss) before income taxes and equity in undistributed income (loss) of subsidiaries									(1,257,365)	(1,282,986)	2,666,359
Credit for income taxes									(415,000)	(399,000)	(412,000)
Income (loss) before equity in undistributed earnings of subsidiaries									(842,365)	(883,986)	3,078,359
Equity in undistributed income of subsidiaries									6,559,132	6,666,682	2,161,348
Net income									$ 5,716,767	$ 5,782,696	$ 5,239,707