Note 19 - Parent Company Only Financial Statements (Details) - Condensed Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Cash Flows from Operating Activities:
Net income	$ 14,938,245		$ 12,617,767		$ 9,691,648
Distributions in excess of (less than) earnings of:
Bargain purchase gain on Community National acquisition	(1,841,385)
Accretion of acquisition fair value adjustments	(1,060,708)
Stock-based compensation expense	792,279		849,760		696,407
Cash Flows from Investing Activities:
Net increase in interest-bearing deposits at financial instituions	(8,660,888)		4,391,112		12,995,009
Net cash paid for Community National acquisition	(6,261,684)	[1]		[1]		[1]
Net cash (used in) provided by' investing activities	(164,557,224)		(132,781,796)		(137,311,801)
Cash Flows from Financing Activities:
Net (decrease) increase in other borrowings	(200,000)		8,099		(14,939,122)
Proceeds from other borrowings term note	10,000,000
Advance (payment) on 364-day revolving note	(5,600,000)		2,000,000		1,100,000
Repayment of Community National's other borrowings at acquisition	3,950,000
Redemption of Preferred Stock, net					(1,100,000)
Repurchase of 521,888 shares of common stock warrants issued in conjunction with Series D
Net cash used in financing activities	112,903,315		110,558,615		111,777,429
Net increase (decrease) in cash and due from banks	(19,617,656)		8,431,736		11,105,904
Cash and due from banks:
Cash and cash equivalents	41,950,790		61,568,446		53,136,710
Series F Noncumulative Perpetual Preferred Stock [Member] | Parent Company [Member]
Cash Flows from Financing Activities:
Redemption of Preferred Stock, net			(10,223,000)
Repurchase of 521,888 shares of common stock warrants issued in conjunction with Series D
Proceeds from issuance of 40,090 shares of Series F Noncumulative Perpetual Preferred Stock, net					39,996,922
Series D Cumulative Perpetual Preferred Stock [Member] | Parent Company [Member]
Cash Flows from Financing Activities:
Redemption of Preferred Stock, net					(38,237,000)
Repurchase of 521,888 shares of common stock warrants issued in conjunction with Series D
Cumulative Perpetual Preferred Stock					(1,100,000)
Bank Subsidiaries [Member] | Parent Company [Member]
Distributions in excess of (less than) earnings of:
Distributions in excess of earnings	5,500,930		(3,706,086)		(4,449,843)
Nonbank Subsidiaries [Member] | Parent Company [Member]
Distributions in excess of (less than) earnings of:
Distributions in excess of earnings	(103)		(132,911)		133,951
Parent Company [Member]
Cash Flows from Operating Activities:
Net income	14,938,245		12,617,767		9,691,648
Distributions in excess of (less than) earnings of:
Bargain purchase gain on Community National acquisition	(1,841,385)
Accretion of acquisition fair value adjustments	79,655
Depreciation	75,182				54
Other-than-temporary impairment losses on securities			62,400		118,847
Stock-based compensation expense	792,279		849,760		646,419
Increase in other assets	(725,105)		(437,827)		(65,205)
(Decrease) increase in other liabilities	(2,978,106)		1,938,832		666,240
Net cash provided by operating activities	15,841,592		11,191,935		6,742,111
Cash Flows from Investing Activities:
Net increase in interest-bearing deposits at financial instituions	(2,288)		(1,937)		(1,227)
Purchase of securities available for sale	(34,040)		(53,501)		(58,149)
Capital infusion, bank subsidiaries					(1,693,679)
Net cash paid for Community National acquisition	(6,261,684)
Increase in cash from dissolution of VPHC			99,645
Net cash (used in) provided by' investing activities	(6,298,012)		44,207		(1,753,055)
Cash Flows from Financing Activities:
Net (decrease) increase in other borrowings	(373,446)
Proceeds from other borrowings term note	10,000,000
Advance (payment) on 364-day revolving note	(5,600,000)		2,000,000		1,100,000
Repayment of Community National's other borrowings at acquisition	(3,950,000)
Payment of cash dividends on common and preferred stock	(4,062,726)		(4,088,949)		(3,712,493)
Repurchase of 521,888 shares of common stock warrants issued in conjunction with Series D
Proceeds from issuance of common stock, net	582,742		994,174		477,339
Purchase of noncontrolling interests			(2,388,417)
Net cash used in financing activities	(3,403,430)		(13,706,192)		(1,475,232)
Net increase (decrease) in cash and due from banks	6,140,150		(2,470,050)		3,513,824
Cash and due from banks:
Cash and cash equivalents	7,212,584		1,072,434		3,542,484
Parent Company [Member] | Beginning of Period [Member]
Cash and due from banks:
Cash and cash equivalents	$ 1,072,434		$ 3,542,484		$ 28,660

[1] Net cash received at closing totaled $3,025,073