Note 19 - Parent Company Financial Information (Details) - Condensed Balance Sheets - USD ($)		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONDENSED BALANCE SHEETS
Cash		$ 37,991,268	$ 56,116,677	$ 24,235,315
Investment securities held-to-maturity		508,456	507,309
Income tax receivable	[1]		1,591,105
Total assets		946,282,972	885,430,647
Junior subordinated debentures		10,310,000	10,310,000
Other liabilities		5,479,971	6,837,701
Stockholders' equity		82,170,774	80,002,576	$ 74,207,180
Total liabilities and stockholders' equity		946,282,972	885,430,647
Parent Company [Member]
CONDENSED BALANCE SHEETS
Cash		20,942	230,936
Investment in wholly-owned subsidiary		91,815,084	89,451,439
Investment securities held-to-maturity		508,456	507,309
Investment in Preferred Trust I		310,010	310,010
Income tax receivable			53,148
Other assets		160,460	164,496
Total assets		92,814,952	90,717,338
Junior subordinated debentures		10,310,000	10,310,000
Other liabilities		334,178	404,762
Stockholders' equity		82,170,774	80,002,576
Total liabilities and stockholders' equity		$ 92,814,952	$ 90,717,338

[1] revised for prior period restatement