CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME (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, 2009	$ 43,001	$ 22,806,829	$ 87,826,331	$ (20,024,661)	$ (565,835)	$ 90,085,665
Comprehensive Income:
Net income	0	0	7,054,132	0	0	7,054,132
Change in unrealized gains (losses) on securities AFS, net	0	0	0	0	2,633,416	2,633,416
Change in funded status of Employers' Accounting for Defined Benefit Pension and Other Benefit Plans, net	0	0	0	0	231,937	231,937
Total comprehensive income (loss)	0	0	0	0	0	9,919,485
Restricted stock units for directors' deferred compensation plan	0	83,311	0	0	0	83,311
Cash dividends declared	0	0	(2,639,382)	0	0	(2,639,382)
Distribution of shares of treasury stock for directors' compensation	0	(44,677)	0	258,906	0	214,229
Distribution of shares of treasury stock for employee compensation	0	(15,537)	0	70,537	0	55,000
Purchase of shares of treasury stock	0	0	0	(425,566)	0	(425,566)
Balances at Sep. 30, 2010	43,001	22,829,926	92,241,081	(20,120,784)	2,299,518	97,292,742
Balances at Dec. 31, 2010	43,001	22,022,122	94,407,620	(19,166,655)	102,475	97,408,563
Comprehensive Income:
Net income	0	0	7,576,059	0	0	7,576,059
Change in unrealized gains (losses) on securities AFS, net		0	0	0	2,678,187	2,678,187
Change in funded status of Employers' Accounting for Defined Benefit Pension and Other Benefit Plans, net	0	0	0	0	284,556	284,556
Total comprehensive income (loss)	0	0	0	0	0	10,538,802
Restricted stock units for directors' deferred compensation plan	0	61,129	0	0	0	61,129
Cash dividends declared	0	0	(3,175,394)	0	0	(3,175,394)
Distribution of shares of treasury stock for directors' compensation	0	(33,831)	0	265,262	0	231,431
Distribution of shares of treasury stock for employee compensation	0	(6,140)	0	61,140	0	55,000
Distribution of shares of treasury stock for director's deferred compensation	0	(7,364)	0	7,310	0	(54)
Distribution of shares of treasury stock for employee restricted stock warrants	0	(60,800)	0	112,090	0	51,290
Purchase of shares of treasury stock	0	0	0	(327,413)	0	(327,413)
Sale of shares of treasury stock	0	(10,101)	0	99,606	0	89,505
Issuance of shares related to FOFC Merger	10,100	23,723,538	0	0	0	23,733,638
Restricted stock awards	0	21,226	0	0	0	21,226
Balances at Sep. 30, 2011	$ 53,101	$ 45,709,779	$ 98,808,285	$ (18,948,660)	$ 3,065,218	$ 128,687,723