Deposits (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
The composition of the bank's deposits
Noninterest Bearing Deposit, Demand	$ 33,193,294	$ 33,422,465
Interest Bearing Deposit, Demand	49,920,755	48,423,471
Interest Bearing Deposit, Savings	98,142,259	93,903,196
Interest Bearing Deposit, Time	69,645,510	70,712,831
Individuals, partnerships and corporations (includes certified and official checks) [Member]
The composition of the bank's deposits
Noninterest Bearing Deposit, Demand	32,515,000	32,614,000
Interest Bearing Deposit, Demand	43,358,000	42,866,000
Interest Bearing Deposit, Savings	94,305,000	90,252,000
Interest Bearing Deposit, Time	65,983,000	67,254,000
States and political subdivisions [Member]
The composition of the bank's deposits
Noninterest Bearing Deposit, Demand	519,000	646,000
Interest Bearing Deposit, Demand	6,563,000	5,558,000
Interest Bearing Deposit, Savings	3,732,000	3,546,000
Interest Bearing Deposit, Time	2,933,000	2,969,000
Commercial banks and other depository institutions [Member]
The composition of the bank's deposits
Noninterest Bearing Deposit, Demand	159,000	162,000
Interest Bearing Deposit, Savings	105,000	105,000
Interest Bearing Deposit, Time	$ 730,000	$ 490,000