Note 19 - Parent Company Only Financial Statements (Details) - Condensed Statements of Operations (USD $)	8 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Condensed Income Statements, Captions [Line Items]
Bargain purchase gain on Community National acquisition	$ 1,841,385	$ 1,841,385
Total income		107,685,786		93,997,168		95,185,126
Interest expense		17,766,521		19,726,613		23,578,392
Salaries and employee benefits		37,510,318		33,274,509		30,365,020
Acquisition and data conversion costs		2,353,162
Income tax benefit		(4,617,942)		(4,534,601)		(3,868,199)
Net income		14,938,245		12,617,767		9,691,648
Bank Subsidiaries [Member] | Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Equity in net income of subsidiaries		20,499,070		17,206,086		14,449,843
Nonbank Subsidiaries [Member] | Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Equity in net income of subsidiaries		31,540		168,934		174,058
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Total interest income		43,476		57,136		62,521
Bargain purchase gain on Community National acquisition		1,841,385
Other *		7,942	[1]	657,733	[1]	129,773	[1]
Total income		22,423,413		18,089,889		14,816,195
Interest expense		1,714,814		1,408,948		1,562,323
Salaries and employee benefits		4,765,762		4,717,609		4,078,474
Professional fees		977,571		988,306		1,103,910
Acquisition and data conversion costs		2,037,684
Other-than-temporary impairment losses on securities				62,400		118,847
Other		642,044		760,618		783,460
Total expenses		10,137,875		7,937,881		7,647,014
Income before income tax benefit		12,285,538		10,152,008		7,169,181
Income tax benefit		2,652,707		2,465,759		2,522,467
Net income		$ 14,938,245		$ 12,617,767		$ 9,691,648

[1] For the year ended December 31, 2012, includes pre-tax gain of approximately $580 thousand on the sale of a 2.25% equity interest in a company providing data processing services to merchant credit card acquiring businesses.