Deposits (Details) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Deposits [Abstract]    
Noninterest bearing demand $ 58,469,352 $ 66,534,956
Interest checking accounts 42,795,169 40,237,146
Money market accounts 63,309,886 75,487,907
Savings accounts 18,073,601 15,166,012
Time deposits of $100,000 and over 115,499,674 129,436,270
Other time deposits 136,994,455 158,658,761
Total deposits $ 435,142,137 $ 485,521,052
Percentage of individual deposits to deposit liability [Abstract]    
Noninterest bearing demand (in hundredths) 13.00% 14.00%
Interest checking accounts (in hundredths) 10.00% 8.00%
Money market accounts (in hundredths) 15.00% 16.00%
Savings account (in hundredths) 4.00% 3.00%
Time deposits of $100,000 and over (in hundredths) 27.00% 27.00%
Other time deposits (in hundredths) 31.00% 32.00%
Total (in hundredths) 100.00% 100.00%