Note 5 - Loans Receivable (Detail) - Allowance for Loan Losses Transactions (USD $)			3 Months Ended														3 Months Ended				3 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011 Charged to FDIC Receivable [Member] Covered Loans [Member]	Dec. 31, 2012 Charged to FDIC Receivable [Member] Covered Loans [Member]	Dec. 31, 2012 Charged to FDIC Receivable [Member]		Dec. 31, 2011 Charged to FDIC Receivable [Member]		Dec. 31, 2011 Charged to Operations [Member] Covered Loans [Member]	Dec. 31, 2012 Charged to Operations [Member] Covered Loans [Member]	Dec. 31, 2012 Charged to Operations [Member]		Dec. 31, 2011 Charged to Operations [Member]		Dec. 31, 2011 Beginning [Member]	Dec. 31, 2012 Beginning [Member]	Dec. 31, 2011 Covered Loans [Member]	Dec. 31, 2012 Covered Loans [Member]	Dec. 31, 2011 Ending [Member]	Dec. 31, 2012 Ending [Member]	Dec. 31, 2012
Balance	$ 8,382,355	$ 8,189,895													$ 6,892,425	$ 10,340,815			$ 5,871,557	$ 8,959,002
Loans charged-off (gross)																	(4,020,868)	(2,717,463)
Recoveries on loans previously charged-off																					10,650
Provision for loan losses			$ 2,400,000	$ 1,230,250	$ 1,230,250	[1]	$ 2,400,000	[2]	$ 600,000	$ 94,750	$ 94,750	[1]	$ 600,000	[2]

[1] Covered loan balances are net of non-accretable differences and allowances for covered loan losses and have not been reduced by $11,037,025 of accretable discounts and discounts on acquired performing loans.

[2] Covered loan balances are net of non-accretable differences and allowances for covered loan losses and have not been reduced by $13,233,075 of accretable discounts and discounts on acquired performing loans.