Nonaccrual Loans (Detail) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans excludes performing troubled debt restructurings	$ 1,825,293	$ 2,400,467
Mortgage loans on real estate | One-to-four family residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans excludes performing troubled debt restructurings	485,369	1,297,953
Mortgage loans on real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans excludes performing troubled debt restructurings	536,838	361,524
Mortgage loans on real estate | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans excludes performing troubled debt restructurings	637,217	423,113
Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans excludes performing troubled debt restructurings	55,757	66,852
Consumer loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans excludes performing troubled debt restructurings	$ 110,112	$ 251,025