Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (USD $)	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2011	$ 65,090	$ 4,879,435	$ 89,702,533	$ 44,585,902	$ 4,754,714	$ 2,051,538	$ (1,606,510)	$ 144,432,702
Net income				3,236,818		166,031		3,402,849
Comprehensive income					(1,517,235)			(1,517,235)
Preferred cash dividends declared and accrued				(938,625)				(938,625)
Proceeds from issuance of common stock as a result of stock purchased under the Employee Stock Purchase Plan		7,767	55,566					63,333
Proceeds from issuance of common stock as a result of stock options exercised		276	2,374					2,650
Stock compensation expense			326,245					326,245
Restricted stock awards		57,770	(57,770)
Other adjustments to noncontrolling interests						(2,066)		(2,066)
Exchange of common stock		(576)	(2,103)					(2,679)
Balance at Mar. 31, 2012	65,090	4,944,672	90,026,845	46,884,095	3,237,479	2,215,503	(1,606,510)	145,767,174
Net income				3,072,156		201,223		3,273,379
Comprehensive income					1,241,045			1,241,045
Common cash dividends declared				(189,091)				(189,091)
Preferred cash dividends declared and accrued				(935,786)				(935,786)
Redemption of 10,223 shares of Series F Noncumulative Perpetual Preferred Stock	(10,223)		(10,212,777)					(10,223,000)
Proceeds from issuance of common stock as a result of stock purchased under the Employee Stock Purchase Plan		10,856	78,055					88,911
Proceeds from issuance of common stock as a result of stock options exercised		9,090	79,902					88,992
Exchange of common stock		(611)	(7,125)					(7,736)
Proceeds from exercise of warrants to purchase shares of common stock issued in conjunction with the Series A Subordinated Notes		4,300	38,700					43,000
Stock compensation expense			177,269					177,269
Other adjustments to noncontrolling interests						(2,065)		(2,065)
Balance at Jun. 30, 2012	54,867	4,968,307	80,180,869	48,831,374	4,478,524	2,414,661	(1,606,510)	139,322,092
Net income				3,057,333		127,177		3,184,510
Comprehensive income					1,643,578			1,643,578
Preferred cash dividends declared and accrued				(810,837)				(810,837)
Purchase of noncontrolling interest			(2,133,417)			(2,393,802)		(4,527,219)
Proceeds from issuance of common stock as a result of stock purchased under the Employee Stock Purchase Plan		7,642	58,326					65,968
Proceeds from issuance of common stock as a result of stock options exercised		7,075	58,996					66,071
Proceeds from exercise of warrants to purchase shares of common stock issued in conjunction with the Series A Subordinated Notes		1,000	9,000					10,000
Stock compensation expense			169,189					169,189
Other adjustments to noncontrolling interests						(2,066)		(2,066)
Balance at Sep. 30, 2012	54,867	4,984,024	78,342,963	51,077,870	6,122,102	145,970	(1,606,510)	139,121,286
Balance at Dec. 31, 2012	54,867	5,039,448	78,912,791	53,326,542	4,706,683		(1,606,510)	140,433,821
Net income				3,265,144				3,265,144
Comprehensive income					(836,358)			(836,358)
Preferred cash dividends declared and accrued				(810,837)				(810,837)
Proceeds from issuance of common stock as a result of stock purchased under the Employee Stock Purchase Plan		5,884	63,487					69,371
Proceeds from issuance of common stock as a result of stock options exercised		19,278	153,550					172,828
Exchange of common stock		(7,048)	(111,628)					(118,676)
Stock compensation expense			293,798					293,798
Tax benefit of nonqualified stock options exercised			35,251					35,251
Restricted stock awards		16,798	(16,798)
Exchange of common stock		(16,798)	(289,113)					(305,911)
Balance at Mar. 31, 2013	54,867	5,057,562	79,041,338	55,780,849	3,870,325		(1,606,510)	142,198,431
Net income				4,045,231				4,045,231
Comprehensive income					(13,091,489)			(13,091,489)
Common cash dividends declared				(228,971)				(228,971)
Preferred cash dividends declared and accrued				(810,838)				(810,838)
Issuance of 834,715 shares of common stock as a result of the acquisition of Community NationalBancorporation, net		834,715	12,181,894					13,016,609
Proceeds from issuance of common stock as a result of stock purchased under the Employee Stock Purchase Plan		9,560	104,221					113,781
Proceeds from issuance of common stock as a result of stock options exercised		3,769	33,070					36,839
Stock compensation expense			162,123					162,123
Tax benefit of nonqualified stock options exercised			4,197					4,197
Restricted stock awards		12,707	(12,707)
Balance at Jun. 30, 2013	54,867	5,918,313	91,514,136	58,786,271	(9,221,164)		(1,606,510)	145,445,913
Net income				3,811,944				3,811,944
Comprehensive income					(818,191)			(818,191)
Preferred cash dividends declared and accrued				(810,837)				(810,837)
Proceeds from issuance of common stock as a result of stock purchased under the Employee Stock Purchase Plan		5,973	65,116					71,089
Proceeds from issuance of common stock as a result of stock options exercised		7,230	76,718					83,948
Stock compensation expense			163,585					163,585
Tax benefit of nonqualified stock options exercised			6,026					6,026
Restricted stock awards		332	(332)
Balance at Sep. 30, 2013	$ 54,867	$ 5,931,848	$ 91,825,249	$ 61,787,378	$ (10,039,355)		$ (1,606,510)	$ 147,953,477