Consolidated Statements of Income - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest Income
Loans	$ 23,314,776	$ 23,564,766	$ 23,254,863
Investment securities	1,895,395	1,483,772	1,627,460
Other	179,155	141,096	131,991
	25,389,326	25,189,634	25,014,314
Interest Expense
Deposits	2,283,982	2,423,871	2,329,090
Federal Home Loan Bank advances	1,313,620	1,196,393	1,202,383
Subordinated debentures	579,410	538,785	533,207
Securities sold under agreements to repurchase		120,833	264,625
	4,177,012	4,279,882	4,329,305
Net Interest Income	21,212,314	20,909,752	20,685,009
Provision for Loan Losses	1,375,000	600,000	1,275,000
Net Interest Income After Provision for Loan Losses	19,837,314	20,309,752	19,410,009
Noninterest Income
Service charges	1,134,664	1,214,880	1,264,027
Gain on sale of investment securities	192,537	187,090	34,163
Gain on sale of mortgage loans held for sale	1,708,478	1,396,358	913,258
Gain on sale of Small Busines Administration loans	297,462	344,818
Net gain (loss) on foreclosed assets	1,270	(164,663)	(213,239)
Other income	1,535,796	1,499,589	1,351,910
	4,870,207	4,478,072	3,350,119
Noninterest Expense
Salaries and employee benefits	10,686,564	9,805,337	8,895,353
Occupancy	1,827,209	1,904,886	1,697,190
FDIC deposit insurance premiums	350,475	447,044	448,675
Prepayment penalty on repurchase agreements		463,992
Data processing	889,575	790,928	685,028
Advertising	525,000	525,000	425,004
Other expense	2,821,923	2,672,541	2,713,674
	17,100,746	16,609,728	14,864,924
Income Before Income Taxes	7,606,775	8,178,096	7,895,204
Provision for Income Taxes	2,012,764	2,461,329	2,112,508
Net Income	5,594,011	5,716,767	5,782,696
Preferred Stock Dividends and Discount Accretion			357,210
Net Income Available to Common Shareholders	$ 5,594,011	$ 5,716,767	$ 5,425,486
Basic Income Per Common Share (in dollars per share)	$ 1.28	$ 1.32	$ 1.35
Diluted Income Per Common Share (in dollars per share)	$ 1.27	$ 1.30	$ 1.33