Note 4 - Securities Available for Sale (Detail) (USD $)	3 Months Ended				3 Months Ended		3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2012 Available For Sale Securities [Member]	Dec. 31, 2012 Collateralized Mortgage Obligations [Member]	Dec. 31, 2012 MARM 2004-13 B1 [Member]	Dec. 31, 2012 MARM 2004-13 B1 [Member]
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities	$ 7,066,500	$ 1,036,000
Proceeds from Sale of Available-for-sale Securities	13,952,478	27,413,474
Available-for-sale Securities, Gross Realized Gains		634,791			219,913
Available-for-sale Securities, Gross Realized Losses	0	2,198
Available-for-sale Securities Pledged as Collateral	114,602,149		127,617,291
Available-for-sale Securities, Gross Unrealized Losses	3,219,396		3,412,716			3,200,000
Servicing Asset at Amortized Cost						14,300,000
Unrealized Loss on Securities							2,100,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 380,446	$ 4,922,916	$ 380,446	$ 4,822,916			$ 380,000,000	$ 380,000,000
Loan to Value Percentage								53.00%
Average Credit Score								737
Timely Payers								90.00%