Fair Value and Interest Rate Risk - Carrying Amounts and Estimated Fair Values of Financial Instruments (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Financial Assets:
Cash and noninterest bearing deposits due from banks	$ 1,570,411	$ 2,736,486
Interest-bearing deposits due from banks, Carrying Amount	33,295,470	67,567,155
Short-term investments, Carrying Amount		710,766
Other investments, Carrying Amount	4,450,000	3,500,000
Federal Reserve Bank stock, Carrying Amount	1,444,300	1,730,200
Federal Home Loan Bank stock, Carrying Amount	4,142,600	4,343,800
Loans receivable, net, Carrying Amount	418,148,323	458,793,536
Accrued interest receivable, Carrying Amount	1,566,415	1,894,292
Financial Liabilities:
Savings deposits, Carrying Amount	80,982,920	77,760,967
Money market deposits, Carrying Amount	29,309,657	42,401,428
NOW accounts, Carrying Amount	28,618,213	30,191,403
Time deposits, Carrying Amount	235,935,131
FHLB Borrowings, Carrying Amount	57,000,000	50,000,000
Securities sold under repurchase agreements, Carrying Amount		7,000,000
Accrued interest payable, Carrying Amount	1,400,000
Level 1 [Member]
Financial Assets:
Cash and noninterest bearing deposits due from banks	1,570,000	2,736,000
Interest-bearing deposits due from banks, Carrying Amount	33,295,000	67,567,000
Short-term investments, Carrying Amount		711,000
Federal Reserve Bank stock, Carrying Amount	1,444,000	1,730,000
Federal Home Loan Bank stock, Carrying Amount	4,143,000	4,344,000
Accrued interest receivable, Carrying Amount	1,566,000	1,894,000
Cash and noninterest bearing balances due from banks, Estimated Fair Value	1,570,000	2,736,000
Interest-bearing deposits due from banks, Estimated Fair Value	33,295,000	67,567,000
Short-term investments, Estimated Fair Value		711,000
Federal Reserve Bank stock, Estimated Fair Value	1,444,000	1,730,000
Federal Home Loan Bank stock, Estimated Fair Value	4,143,000	4,344,000
Accrued interest receivable, Estimated Fair Value	1,566,000	1,894,000
Financial Liabilities:
Demand deposits, Carrying Amount	55,358,000	65,176,000
Savings deposits, Carrying Amount	80,983,000	77,761,000
Money market deposits, Carrying Amount	29,310,000	42,401,000
NOW accounts, Carrying Amount	28,618,000	30,191,000
Accrued interest payable, Carrying Amount	1,388,000	1,241,000
Demand deposits, Estimated Fair Value	55,358,000	65,176,000
Savings deposits, Estimated Fair Value	80,983,000	77,761,000
Money market deposits, Estimated Fair Value	29,310,000	42,401,000
NOW accounts, Estimated Fair Value	28,618,000	30,191,000
Accrued interest payable, Estimated Fair Value	1,388,000	1,241,000
Level 2 [Member]
Financial Assets:
Other investments, Carrying Amount	4,450,000	3,500,000
Other investments, Estimated Fair Value	4,450,000	3,500,000
Financial Liabilities:
Time deposits, Carrying Amount	235,935,000	281,753,000
FHLB Borrowings, Carrying Amount	57,000,000	50,000,000
Securities sold under repurchase agreements, Carrying Amount		7,000,000
Subordinated debt, Carrying Amount	8,248,000	8,248,000
Time deposits, Estimated Fair Value	236,602,000	284,974,000
FHLB Borrowings, Estimated Fair Value	57,000,000	52,448,000
Securities sold under repurchase agreements, Estimated Fair Value		7,683,000
Subordinated debt, Estimated Fair Value	8,248,000	8,248,000
Level 3 [Member]
Financial Assets:
Loans receivable, net, Carrying Amount	418,148,000	458,794,000
Loans receivable, net, Estimated Fair Value	$ 424,831,000	$ 464,551,000