Deposits - Composition of Bank's Deposits (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Schedule Of Deposits Liabilities Balance Sheet Reported Amounts [Line Items]
Noninterest Bearing Deposit, Demand	$ 49,432,708	$ 55,906,673
Interest Bearing Deposit, Demand	53,614,459	54,812,380
Interest Bearing Deposit, Savings	111,179,716	108,070,929
Interest Bearing Deposit, Time	65,326,829	67,086,776
Individuals, Partnerships and Corporations (Includes Certified and Official Checks) [Member]
Schedule Of Deposits Liabilities Balance Sheet Reported Amounts [Line Items]
Noninterest Bearing Deposit, Demand	48,769,000	55,234,000
Interest Bearing Deposit, Demand	46,547,000	49,356,000
Interest Bearing Deposit, Savings	107,097,000	104,077,000
Interest Bearing Deposit, Time	62,356,000	64,128,000
States and Political Subdivisions [Member]
Schedule Of Deposits Liabilities Balance Sheet Reported Amounts [Line Items]
Noninterest Bearing Deposit, Demand	520,000	601,000
Interest Bearing Deposit, Demand	7,067,000	5,456,000
Interest Bearing Deposit, Savings	4,052,000	3,963,000
Interest Bearing Deposit, Time	2,490,000	2,478,000
Commercial Banks and Other Depository Institutions [Member]
Schedule Of Deposits Liabilities Balance Sheet Reported Amounts [Line Items]
Noninterest Bearing Deposit, Demand	144,000	72,000
Interest Bearing Deposit, Savings	31,000	31,000
Interest Bearing Deposit, Time	$ 481,000	$ 481,000