Note 20 - Condensed Parent Company Statements - Statements of Income (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest Expense
Other									$ 2,821,923	$ 2,672,541	$ 2,713,674
Income before income taxes	$ 2,034,328	$ 2,095,916	$ 1,672,551	$ 1,803,980	$ 1,985,622	$ 2,040,386	$ 2,234,107	$ 1,917,981	7,606,775	8,178,096	7,895,204
Provision for income taxes	$ 514,981	$ 554,009	$ 416,399	$ 527,375	$ 554,983	$ 621,751	$ 696,158	$ 588,437	2,012,764	2,461,329	2,112,508
Net income									5,594,011	5,716,767	5,782,696
Parent Company [Member]
Dividends from subsidiary bank
Interest Income
Other									50,332	16,200	16,069
									50,332	16,200	16,069
Interest Expense
Related party									579,410	538,785	533,207
Other									931,816	734,780	765,848
									1,511,226	1,273,565	1,299,055
Income before income taxes									(1,460,894)	(1,257,365)	(1,282,986)
Provision for income taxes									(435,000)	(415,000)	(399,000)
Income (loss) before equity in undistributed earnings of subsidiaries									(1,025,894)	(842,365)	(883,986)
Equity in undistributed income of subsidiaries									6,619,905	6,559,132	6,666,682
Net income									$ 5,594,011	$ 5,716,767	$ 5,782,696