Consolidated Statements of Income (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Interest income:
Interest and fees on loans	$ 10,408,472	$ 9,943,649	$ 9,523,822
Interest on debt securities: Taxable	1,922,523	2,412,444	3,299,150
Interest on debt securities: Tax-exempt	721,358	597,242	735,987
Dividends	14,632	5,404	4,564
Interest on deposits in other banks	35,277	57,805	32,949
Interest on certificates of deposit in other banks	1,858	0	0
Interest on other short-term investments	0	0	97
Total interest income	13,104,120	13,016,544	13,596,569
Interest expense:
Deposits	1,369,745	2,053,646	2,884,601
Federal funds purchased	1,810	3	994
Other short-term borrowings	41,677	111,452	169,286
Long-term debt	781,581	724,012	617,302
Total interest expense	2,194,813	2,889,113	3,672,183
Net interest income	10,909,307	10,127,431	9,924,386
Provision for loan losses	983,667	600,000	535,709
Net interest income after provision for loan losses	9,925,640	9,527,431	9,388,677
Noninterest income:
Service charges on deposit accounts	1,415,379	1,567,424	1,765,854
Income from trust services	214,016	241,583	212,445
Income from brokerage services	324,018	300,210	266,137
Income from insurance services	1,273,320	1,124,612	1,069,301
Income from mortgage banking services	1,477,166	1,350,625	1,327,193
Provision for foreclosed asset losses	(300,000)	(275,000)	0
Net gain (loss) on sale or disposition of assets	(160,182)	30,852	349
Net gain on sale of securities	381,312	534,973	255,324
Net loss on the impairment of equity securities	(12,265)	0	0
Other income	545,997	511,638	467,356
Total noninterest income	5,158,761	5,386,917	5,363,959
Noninterest expense:
Salaries and employee benefits	7,716,684	6,970,460	6,359,949
Occupancy expense	952,668	891,291	846,383
Equipment expense	811,701	739,223	666,779
Data processing expense	1,039,252	989,413	925,814
Amortization of intangible assets	219,357	207,638	207,638
Other operating expenses	2,596,398	2,676,372	3,425,138
Total noninterest expenses	13,336,060	12,474,397	12,431,701
Income before income taxes	1,748,341	2,439,951	2,320,935
Provision for income taxes	287,203	583,735	508,339
Net income	$ 1,461,138	$ 1,856,216	$ 1,812,596
Basic earnings per share:
Net income	$ 0.57	$ 0.73	$ 0.71
Weighted average shares outstanding	2,547,837	2,547,837	2,547,837
Diluted earnings per share:
Net income	$ 0.57	$ 0.73	$ 0.71
Weighted average shares outstanding	2,547,865	2,547,894	2,547,837