CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest and fee income
Loans, including fees	$ 11,795,303	$ 11,263,048	$ 11,188,748
Taxable securities	1,376,441	1,045,592	465,268
Tax-exempt securities	1,012,638	1,059,883	1,017,326
Other	45,566	49,731	80,450
Total interest and fee income	14,229,948	13,418,254	12,751,792
Interest expense
Deposits	401,463	408,266	$ 416,128
Short-term borrowings	932	681
Total interest expense	402,395	408,947	$ 416,128
Net interest income	13,827,553	13,009,307	12,335,664
Provision for loan losses	192,500	82,500	207,500
Net interest income after provision for loan losses	13,635,053	12,926,807	12,128,164
Other income
Service charges, fees and commissions	991,007	921,638	943,627
Mortgage banking income	1,605,676	1,315,020	1,521,670
Other non-interest income	29,443	29,466	31,120
Gain on sale of other real estate owned		2,382
Gain on sale of securities	423,832	312,577
Total other income	3,049,958	2,581,083	2,496,417
Other expense
Salaries and employee benefits	5,859,203	5,466,446	5,191,215
Net occupancy expense	1,480,606	1,473,700	1,406,680
Other operating expenses	2,173,666	2,171,058	2,119,955
Total other expense	9,513,475	9,111,204	8,717,850
Income before income tax expense	7,171,536	6,396,686	5,906,731
Income tax expense	2,287,248	1,997,866	1,829,807
Net income	$ 4,884,288	$ 4,398,820	$ 4,076,924
Weighted average shares outstanding
Basic	4,912,499	4,907,208	4,897,902
Diluted	5,067,085	5,032,211	4,906,234
Basic income per common share	$ 0.99	$ 0.90	$ 0.83
Diluted income per common share	$ 0.96	$ 0.87	$ 0.83