Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Statement of Financial Position [Abstract]
Investment securities held to maturity	$ 57,975,519	$ 54,158,523
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	5,000,000	5,000,000
Common stock, shares issued	4,293,835	4,293,835
Treasury stock, at cost	$ 1,745,998	$ 1,745,998