CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 10,537,755	$ 10,101,873	$ 5,232,835
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of intangible assets	1,041,193	730,894	933,305
Deferred income tax expense (benefit)	3,416,135	153,450	(1,949,446)
Provision for loan losses	958,333	1,125,000	2,450,000
Depreciation and amortization of fixed assets	2,861,644	2,778,065	2,792,807
Amortization of premiums on securities, net	1,394,115	608,257	386,612
Gains on sales of loans held for sale, net	(179,096)	(241,537)	(258,572)
Proceeds from sales of loans held for sale	7,778,633	9,105,462	13,514,127
Loans originated and held for sale	(7,507,967)	(9,151,419)	(13,374,645)
Net (gain) loss on sale of other real estate owned	(91,533)	(24,563)	4,913
Net gain on trading assets	(2,506)	0	0
Net gains on securities transactions	(1,108,091)	(450,666)	(784,589)
Net impairment loss recognized on investment securities	67,400	393,005	2,242,446
Proceeds from sales of trading assets	19,938	0	0
Purchase of trading assets	(311,813)	0	0
(Increase) decrease in other assets	(9,890,546)	2,708,278	1,408,261
Decrease (increase) in prepaid FDIC Assessment	164,744	1,074,474	(3,941,521)
Decrease in accrued interest payable	(287,822)	(344,853)	(333,978)
Expense related to restricted stock units for directors' deferred compensation plan	80,083	111,772	104,929
Expense related to employee stock compensation	55,000	55,000	50,000
Expense related to employee restricted stock awards	28,141	1,143	0
Increase (decrease) in other liabilities	206,721	(933,414)	(1,689,170)
Income from bank owned life insurance	(88,389)	(87,489)	(51,129)
Proceeds from sales of student loans	0	137,509	1,942,673
Net cash provided by operating activities	9,142,072	17,850,241	8,679,858
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales and calls of securities available for sale	88,741,210	85,440,031	68,234,755
Proceeds from maturities and principal collected on securities available for sale	31,200,076	59,166,409	58,694,145
Proceeds from maturities and principal collected on securities held to maturity	3,965,483	10,057,026	8,266,171
Purchases of securities available for sale	(127,405,986)	(136,077,171)	(161,072,813)
Purchases of securities held to maturity	(4,562,281)	(5,612,297)	(11,987,188)
Purchase of Federal Home Loan Bank and Federal Reserve Bank stock	(1,002,500)	(58,200)	(443,650)
Redemption of Federal Home Loan Bank and Federal Reserve Bank stock	400,350	9,900	535,500
Purchases of premises and equipment	(2,551,969)	(2,084,537)	(1,819,689)
Cash paid Fort Orange Financial Corp. acquisition	(8,137,816)	0	0
Cash received Fort Orange Financial Corp. acquisition	33,284,995	0	0
Net cash received in Bank of Canton acquisition	0	0	2,876,462
Proceeds from sale of other real estate owned	327,087	317,823	421,871
Net (increase) decrease in loans	(19,322,219)	(20,117,424)	24,994,960
Net cash used by investing activities	(5,063,570)	(8,958,440)	(11,299,476)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand deposits, NOW accounts, savings accounts, and insured money market accounts	55,243,997	13,959,189	90,109,046
Net decrease in time deposits and individual retirement accounts	(43,578,345)	(28,663,430)	(18,809,498)
Net decrease in securities sold under agreements to repurchase	(18,236,546)	(9,488,642)	(9,149,257)
Net decrease in Federal Home Loan Bank long term advances	(910,246)	0	0
Purchase of treasury stock	(501,299)	(425,567)	(156,143)
Sale of treasury stock	242,610	127,500	229,520
Cash dividends paid	(4,056,597)	(3,519,470)	(3,517,034)
Net cash (used) provided by financing activities	(11,796,426)	(28,010,420)	58,706,634
Net (decrease) increase in cash and cash equivalents	(7,717,924)	(19,118,619)	56,087,016
Cash and cash equivalents, beginning of period	60,619,777	79,738,396	23,651,380
Cash and cash equivalents, end of period	52,901,853	60,619,777	79,738,396
Cash paid during the year for:
Interest	6,782,999	8,560,664	11,472,434
Income Taxes	5,110,847	5,475,675	7,399,018
Supplemental disclosure of non-cash activity:
Transfer of loans to other real estate owned	$ 533,976	$ 554,246	$ 427,108