CONSOLIDATED STATEMENTS OF INCOME (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest and Dividend Income:
Loans, including fees	$ 45,297,943	$ 43,180,698	$ 35,064,009
Taxable securities	5,357,179	5,874,019	6,327,489
Tax exempt securities	1,268,242	1,378,753	1,188,193
Interest-bearing deposits	152,891	214,529	166,239
Total interest and dividend income	52,076,255	50,647,999	42,745,930
Interest Expense:
Deposits	3,242,652	4,350,419	5,624,402
Borrowed funds	1,058,547	1,073,016	950,866
Securities sold under agreements to repurchase	994,227	1,375,361	1,640,543
Total interest expense	5,295,426	6,798,796	8,215,811
Net interest income	46,780,829	43,849,203	34,530,119
Provision for loan losses	827,567	958,333	1,125,000
Net interest income after provision for loan losses	45,953,262	42,890,870	33,405,119
Other operating income:
Wealth management group fee income	6,826,976	6,709,685	10,496,637
Service charges on deposit accounts	4,240,908	4,281,808	4,552,430
Net gain on securities transactions	300,516	1,108,091	450,666
Other-than-temporary loss on investment securities:
Total impairment losses	0	(67,400)	(393,005)
Loss recognized in other comprehensive income	0	0	0
Net impairment loss recognized in earnings	0	(67,400)	(393,005)
Net gain on sales of loans held for sale	484,006	179,096	241,537
Casualty gains	790,248	0	0
Gains on sales of other real estate owned	57,696	93,204	42,545
Income from bank owned life insurance	86,577	88,389	87,489
Other	4,503,158	5,071,385	4,166,377
Total other operating income	17,290,085	17,464,258	19,644,676
Other operating expenses:
Salaries and wages	18,917,724	17,136,433	15,343,811
Pension and other employee benefits	5,623,861	4,796,994	3,866,744
Net occupancy expenses	5,163,865	5,015,936	4,334,441
Furniture and equipment expenses	2,205,166	2,118,544	1,948,900
Data processing expense	4,420,953	3,915,841	3,364,240
Professional Fees	1,442,644	949,779	698,113
Amortization of intangible assets	1,046,720	1,041,193	730,894
Marketing and advertising expense	1,068,494	1,037,416	929,606
Losses on sales of other real estate owned	102,344	1,671	17,982
Other real estate owned expenses	328,182	104,829	348,939
FDIC insurance	807,493	967,254	1,196,901
Loan expense	788,473	607,732	519,805
Merger related expenses	30,145	2,255,169	482,180
Other	4,890,561	4,835,432	4,060,127
Total other operating expenses	46,836,625	44,784,223	37,842,683
Income before income tax expense	16,406,722	15,570,905	15,207,112
Income tax expense	5,384,482	5,033,150	5,105,239
Net income	$ 11,022,240	$ 10,537,755	$ 10,101,873
Weighted average shares outstanding (in shares)	4,640,912	4,382,843	3,606,541
Basic and diluted earnings per share (in dollars per share)	$ 2.38	$ 2.40	$ 2.80