Consolidated Balance Sheets (unaudited) (Parenthetical) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Assets
Investment securities held to maturity, approximate fair value	$ 66,055,779	$ 60,866,303
Allowance for loan losses	$ 763,308	$ 672,261
Stockholders' equity
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, shares issued (in shares)	2,991,543	2,996,323
Common stock, shares outstanding (in shares)	2,991,543	2,996,323