Amortized Cost and Approximate Fair Value of Available-for-Sale Securities (Detail) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	$ 103,872,654	$ 98,572,821
Available-for-sale securities, gross unrealized gains	5,577,852	4,112,688
Available-for-sale securities, gross unrealized losses	(74,126)	(63,461)
Available-for-sale securities, fair value	109,376,380	102,622,048
U.S. government and agencies
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	9,538,655	14,132,240
Available-for-sale securities, gross unrealized gains	264,775	211,540
Available-for-sale securities, gross unrealized losses	(2,057)	(8,137)
Available-for-sale securities, fair value	9,801,373	14,335,643
Mortgage-backed securities (government-sponsored enterprises - residential)
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	46,346,009	39,479,133
Available-for-sale securities, gross unrealized gains	1,721,407	905,509
Available-for-sale securities, gross unrealized losses	(792)	(20,556)
Available-for-sale securities, fair value	48,066,624	40,364,086
Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	47,987,990	44,961,448
Available-for-sale securities, gross unrealized gains	3,591,670	2,995,639
Available-for-sale securities, gross unrealized losses	(71,277)	(34,768)
Available-for-sale securities, fair value	$ 51,508,383	$ 47,922,319

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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+ Details

- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References+ Details

- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

+ References+ Details