Note 4 - Securities Available for Sale (Detail) - Available for Sale Securities, Continuous Unrealized Loss Position (USD $)	Dec. 31, 2012	Sep. 30, 2012
Mortgage-backed securities:
Amortized cost	$ 179,799,286	$ 189,071,181
Less Than 12 Months [Member] | Mortgage-Backed FHLMC [Member]
Mortgage-backed securities:
Amortized cost	8,290,299
Gross unrealized losses	(7,410)
Estimated fair value	8,282,889
Less Than 12 Months [Member]
Mortgage-backed securities:
Amortized cost	8,290,299
Gross unrealized losses	(7,410)
Estimated fair value	8,282,889
Greater Than 12 Months [Member] | Tax-Free Municipals [Member]
Mortgage-backed securities:
Amortized cost	260,264	262,550
Gross unrealized losses	(1,458)	(1,571)
Estimated fair value	258,806	260,979
Greater Than 12 Months [Member] | Private Label Mortgage Securities [Member]
Mortgage-backed securities:
Amortized cost	14,256,142	16,485,944
Gross unrealized losses	(3,210,528)	(3,410,993)
Estimated fair value	11,045,614	13,074,951
Greater Than 12 Months [Member] | Collateralized Mortgage Obligations GNMA [Member]
Mortgage-backed securities:
Amortized cost		133,587
Gross unrealized losses		(152)
Estimated fair value		133,435
Greater Than 12 Months [Member]
Mortgage-backed securities:
Amortized cost	14,516,406	16,882,081
Gross unrealized losses	(3,211,986)	(3,412,716)
Estimated fair value	11,304,420	13,469,365
Mortgage-Backed FHLMC [Member]
Mortgage-backed securities:
Amortized cost	41,715,064	45,178,602
Tax-Free Municipals [Member]
Mortgage-backed securities:
Amortized cost	12,122,631	11,555,068
Collateralized Mortgage Obligations GNMA [Member]
Mortgage-backed securities:
Amortized cost	$ 323,861	$ 499,503