CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balances at Dec. 31, 2010	$ 43,001	$ 22,022,122	$ 94,407,620	$ (19,166,655)	$ 102,475	$ 97,408,563
Net income			7,576,059			7,576,059
Other comprehensive income					2,962,743	2,962,743
Restricted stock awards		21,226				21,226
Restricted stock units for directors' deferred compensation plan		61,129				61,129
Cash dividends declared			(3,175,394)			(3,175,394)
Distribution of shares of treasury stock for directors' compensation		(33,831)		265,262		231,431
Distribution of shares of treasury stock for employee compensation		(6,140)		61,140		55,000
Distribution of shares of treasury stock for deferred director's compensation		(7,364)		7,310		(54)
Distribution of shares of treasury stock for employee restricted stock awards		(60,800)		112,090		51,290
Purchase of shares of treasury stock				(327,413)		(327,413)
Sale of shares of treasury stock		(10,101)		99,606		89,505
Issuance of shares related to FOFC Merger	10,100	23,723,538				23,733,638
Balances at Sep. 30, 2011	53,101	45,709,779	98,808,285	(18,948,660)	3,065,218	128,687,723
Balances at Dec. 31, 2011	53,101	45,582,861	100,628,900	(18,894,044)	(1,441,378)	125,929,440
Net income			8,892,418			8,892,418
Other comprehensive income					1,369,523	1,369,523
Restricted stock awards		61,062				61,062
Restricted stock units for directors' deferred compensation plan		65,151				65,151
Cash dividends declared			(3,429,775)			(3,429,775)
Distribution of shares of treasury stock for directors' compensation		(28,121)		261,069		232,948
Distribution of shares of treasury stock for employee compensation		(8,052)		88,052		80,000
Distribution of shares of treasury stock for deferred director's compensation		(81,747)		82,588		841
Distribution of shares of treasury stock for employee restricted stock awards		(53,412)		53,412
Purchase of shares of treasury stock				(579,051)		(579,051)
Sale of shares of treasury stock		101		257,449		257,550
Balances at Sep. 30, 2012	$ 53,101	$ 45,537,843	$ 106,091,543	$ (18,730,525)	$ (71,855)	$ 132,880,107