Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Loans, allowance for loan losses	$ 2,983,147	$ 3,093,623	[1]
Common stock, par value	$ 5	$ 5	[1]
Common stock, authorized shares	10,000,000	10,000,000	[1]
Common stock, outstanding shares	4,817,856	4,810,856	[1]

[1] Derived from the audited consolidated financial statements.