Consolidated Statements of Income (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest income:
Interest and fees on loans	$ 11,455,071	$ 10,408,472	$ 9,943,649
Interest on debt securities: Taxable	1,151,447	1,922,523	2,412,444
Interest on debt securities: Tax-exempt	1,015,261	721,358	597,242
Dividends	32,807	14,632	5,404
Interest on deposits in other banks	60,037	35,277	57,805
Interest on certificates of deposit in other banks	19,578	1,858	0
Total interest income	13,734,201	13,104,120	13,016,544
Interest expense:
Deposits	1,111,430	1,369,745	2,053,646
Federal funds purchased	4	1,810	3
Other short-term borrowings	53,765	41,677	111,452
Long-term debt	733,339	781,581	724,012
Total interest expense	1,898,538	2,194,813	2,889,113
Net interest income	11,835,663	10,909,307	10,127,431
Provision for loan losses	445,000	983,667	600,000
Net interest income after provision for loan losses	11,390,663	9,925,640	9,527,431
Noninterest income:
Service charges on deposit accounts	1,241,756	1,359,866	1,509,247
Income from trust services	205,047	214,016	241,583
Income from retail brokerage services	381,916	324,018	300,210
Income from insurance services	1,280,474	1,273,320	1,124,612
Income from mortgage banking services	1,675,936	1,477,166	1,350,625
Provision for foreclosed asset losses	(320,000)	(300,000)	(275,000)
Net gain (loss) on sale or disposition of assets	23,972	(160,182)	30,852
Net gain on sale of securities	337,804	381,312	534,973
Net loss on the impairment of equity securities	0	(12,265)	0
Other income	697,929	601,510	569,815
Total noninterest income	5,524,834	5,158,761	5,386,917
Noninterest expense:
Salaries and employee benefits	8,717,337	7,716,684	6,970,460
Occupancy expense	1,006,426	952,668	891,291
Equipment expense	939,933	811,701	739,223
Data processing expense	1,081,840	1,039,252	989,413
Amortization of intangible assets	219,482	219,357	207,638
Other operating expenses	2,630,514	2,596,398	2,676,372
Total noninterest expenses	14,595,532	13,336,060	12,474,397
Income before income taxes	2,319,965	1,748,341	2,439,951
Provision for income taxes	380,878	287,203	583,735
Net income	$ 1,939,087	$ 1,461,138	$ 1,856,216
Basic earnings per share:
Net income	$ 0.76	$ 0.57	$ 0.73
Weighted average shares outstanding	2,547,837	2,547,837	2,547,837
Diluted earnings per share:
Net income	$ 0.76	$ 0.57	$ 0.73
Weighted average shares outstanding	2,547,865	2,547,865	2,547,894