Note 5 - Loans Receivable (Detail) - Risk Grades of the Loan Portfolio (USD $)	Dec. 31, 2012		Sep. 30, 2012
Numerical Risk Rating (1-4) [Member] | Residential Real Estate 1-4 Family [Member] | Covered Loans [Member]
Loan receivable			$ 7,153,464
Numerical Risk Rating (1-4) [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
Loan receivable			56,448,239
Numerical Risk Rating (1-4) [Member] | Commercial [Member] | Covered Loans [Member]
Loan receivable			6,912,992
Numerical Risk Rating (1-4) [Member] | Consumer and Other [Member] | Covered Loans [Member]
Loan receivable			4,011,268
Numerical Risk Rating (1-4) [Member] | Covered Loans [Member]
Loan receivable			74,525,963
Numerical Risk Rating (5) [Member] | Residential Real Estate 1-4 Family [Member] | Covered Loans [Member]
Loan receivable			2,223,780
Numerical Risk Rating (5) [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
Loan receivable			27,564,628
Numerical Risk Rating (5) [Member] | Commercial [Member] | Covered Loans [Member]
Loan receivable			4,040,798
Numerical Risk Rating (5) [Member] | Real Estate Construction [Member] | Covered Loans [Member]
Loan receivable			1,343,072
Numerical Risk Rating (5) [Member] | Consumer and Other [Member] | Covered Loans [Member]
Loan receivable			224,720
Numerical Risk Rating (5) [Member] | Covered Loans [Member]
Loan receivable			35,396,998
Numerical Risk Rating (6) [Member] | Residential Real Estate 1-4 Family [Member] | Covered Loans [Member]
Loan receivable			3,217,548
Numerical Risk Rating (6) [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
Loan receivable			54,282,789
Numerical Risk Rating (6) [Member] | Commercial [Member] | Covered Loans [Member]
Loan receivable			5,127,288
Numerical Risk Rating (6) [Member] | Consumer and Other [Member] | Covered Loans [Member]
Loan receivable			581,495
Numerical Risk Rating (6) [Member] | Covered Loans [Member]
Loan receivable			63,209,120
Numerical Risk Rating (7) [Member] | Residential Real Estate 1-4 Family [Member] | Covered Loans [Member]
Loan receivable			434,798
Numerical Risk Rating (7) [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
Loan receivable			4,379,389
Numerical Risk Rating (7) [Member] | Commercial [Member] | Covered Loans [Member]
Loan receivable			1,543,573
Numerical Risk Rating (7) [Member] | Consumer and Other [Member] | Covered Loans [Member]
Loan receivable			3,696
Numerical Risk Rating (7) [Member] | Covered Loans [Member]
Loan receivable			6,361,456
Numerical Risk Rating (8) [Member] | Residential Real Estate 1-4 Family [Member] | Covered Loans [Member]
Loan receivable			0
Numerical Risk Rating (8) [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
Loan receivable			0
Numerical Risk Rating (8) [Member] | Commercial [Member] | Covered Loans [Member]
Loan receivable			0
Numerical Risk Rating (8) [Member] | Real Estate Construction [Member] | Covered Loans [Member]
Loan receivable			0
Numerical Risk Rating (8) [Member] | Consumer and Other [Member] | Covered Loans [Member]
Loan receivable			0
Numerical Risk Rating (8) [Member] | Covered Loans [Member]
Loan receivable			0
Pass [Member] | Residential Real Estate 1-4 Family [Member] | Non Covered Loans [Member]
Loan receivable	95,446,522		97,045,428
Pass [Member] | Commercial Real Estate [Member] | Non Covered Loans [Member]
Loan receivable	218,417,749		217,582,908
Pass [Member] | Commercial [Member] | Non Covered Loans [Member]
Loan receivable	14,606,118		13,252,993
Pass [Member] | Real Estate Construction [Member] | Non Covered Loans [Member]
Loan receivable	46,137,628		44,075,754
Pass [Member] | Consumer and Other [Member] | Non Covered Loans [Member]
Loan receivable	17,110,480		17,357,541
Pass [Member] | Non Covered Loans [Member]
Loan receivable	391,718,497		389,314,624
Special Mention [Member] | Residential Real Estate 1-4 Family [Member] | Non Covered Loans [Member]
Loan receivable	3,257,546		3,525,488
Special Mention [Member] | Commercial Real Estate [Member] | Non Covered Loans [Member]
Loan receivable	6,182,683		11,396,970
Special Mention [Member] | Commercial [Member] | Non Covered Loans [Member]
Loan receivable	87,734		93,033
Special Mention [Member] | Real Estate Construction [Member] | Non Covered Loans [Member]
Loan receivable	34,424		286,505
Special Mention [Member] | Consumer and Other [Member] | Non Covered Loans [Member]
Loan receivable	554,267		559,982
Special Mention [Member] | Non Covered Loans [Member]
Loan receivable	10,116,654		15,861,978
Substandard [Member] | Residential Real Estate 1-4 Family [Member] | Non Covered Loans [Member]
Loan receivable	5,003,168		4,943,628
Substandard [Member] | Commercial Real Estate [Member] | Non Covered Loans [Member]
Loan receivable	25,012,555		22,399,132
Substandard [Member] | Commercial [Member] | Non Covered Loans [Member]
Loan receivable	3,126,451		3,250,807
Substandard [Member] | Real Estate Construction [Member] | Non Covered Loans [Member]
Loan receivable	600,468		1,006,931
Substandard [Member] | Consumer and Other [Member] | Non Covered Loans [Member]
Loan receivable	232,775		189,675
Substandard [Member] | Non Covered Loans [Member]
Loan receivable	33,975,417		31,790,173
Loss [Member] | Residential Real Estate 1-4 Family [Member] | Non Covered Loans [Member]
Loan receivable	0
Loss [Member] | Commercial Real Estate [Member] | Non Covered Loans [Member]
Loan receivable	0
Loss [Member] | Commercial [Member] | Non Covered Loans [Member]
Loan receivable	0
Loss [Member] | Real Estate Construction [Member] | Non Covered Loans [Member]
Loan receivable	0
Loss [Member] | Consumer and Other [Member] | Non Covered Loans [Member]
Loan receivable	0
Loss [Member] | Non Covered Loans [Member]
Loan receivable	0
Numerical Risk Rating (1-4) [Member] | Residential Real Estate 1-4 Family [Member] | Covered Loans [Member]
Loan receivable	6,638,498
Numerical Risk Rating (1-4) [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
Loan receivable	53,369,622
Numerical Risk Rating (1-4) [Member] | Commercial [Member] | Covered Loans [Member]
Loan receivable	5,526,168
Numerical Risk Rating (1-4) [Member] | Real Estate Construction [Member] | Covered Loans [Member]
Loan receivable	126,516
Numerical Risk Rating (1-4) [Member] | Consumer and Other [Member] | Covered Loans [Member]
Loan receivable	3,611,096
Numerical Risk Rating (1-4) [Member] | Covered Loans [Member]
Loan receivable	69,271,900
Numerical Risk Rating (5) [Member] | Residential Real Estate 1-4 Family [Member] | Covered Loans [Member]
Loan receivable	1,987,139
Numerical Risk Rating (5) [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
Loan receivable	22,401,745
Numerical Risk Rating (5) [Member] | Commercial [Member] | Covered Loans [Member]
Loan receivable	3,716,210
Numerical Risk Rating (5) [Member] | Real Estate Construction [Member] | Covered Loans [Member]
Loan receivable	1,304,345
Numerical Risk Rating (5) [Member] | Consumer and Other [Member] | Covered Loans [Member]
Loan receivable	219,579
Numerical Risk Rating (5) [Member] | Covered Loans [Member]
Loan receivable	29,629,018
Numerical Risk Rating (6) [Member] | Residential Real Estate 1-4 Family [Member] | Covered Loans [Member]
Loan receivable	3,322,792
Numerical Risk Rating (6) [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
Loan receivable	49,007,557
Numerical Risk Rating (6) [Member] | Commercial [Member] | Covered Loans [Member]
Loan receivable	4,861,955
Numerical Risk Rating (6) [Member] | Consumer and Other [Member] | Covered Loans [Member]
Loan receivable	333,639
Numerical Risk Rating (6) [Member] | Covered Loans [Member]
Loan receivable	57,525,943
Numerical Risk Rating (7) [Member] | Residential Real Estate 1-4 Family [Member] | Covered Loans [Member]
Loan receivable	199,736
Numerical Risk Rating (7) [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
Loan receivable	3,050,239
Numerical Risk Rating (7) [Member] | Commercial [Member] | Covered Loans [Member]
Loan receivable	654,882
Numerical Risk Rating (7) [Member] | Consumer and Other [Member] | Covered Loans [Member]
Loan receivable	2,657
Numerical Risk Rating (7) [Member] | Covered Loans [Member]
Loan receivable	3,907,514
Numerical Risk Rating (8) [Member] | Residential Real Estate 1-4 Family [Member] | Covered Loans [Member]
Loan receivable	0
Numerical Risk Rating (8) [Member] | Commercial Real Estate [Member] | Covered Loans [Member]
Loan receivable	0
Numerical Risk Rating (8) [Member] | Commercial [Member] | Covered Loans [Member]
Loan receivable	0
Numerical Risk Rating (8) [Member] | Real Estate Construction [Member] | Covered Loans [Member]
Loan receivable	0
Numerical Risk Rating (8) [Member] | Consumer and Other [Member] | Covered Loans [Member]
Loan receivable	0
Numerical Risk Rating (8) [Member] | Covered Loans [Member]
Loan receivable	0
Residential Real Estate 1-4 Family [Member] | Non Covered Loans [Member]
Loan receivable	103,707,236		105,514,544
Residential Real Estate 1-4 Family [Member] | Covered Loans [Member]
Loan receivable	12,148,165	[1]	13,029,590	[2]
Commercial Real Estate [Member] | Non Covered Loans [Member]
Loan receivable	249,612,987		251,379,010
Commercial Real Estate [Member] | Covered Loans [Member]
Loan receivable	127,829,163	[1]	142,675,045	[2]
Commercial [Member] | Non Covered Loans [Member]
Loan receivable	17,820,303		16,596,833
Commercial [Member] | Covered Loans [Member]
Loan receivable	14,759,215	[1]	17,624,651	[2]
Real Estate Construction [Member] | Non Covered Loans [Member]
Loan receivable	46,772,520		45,369,190
Real Estate Construction [Member] | Covered Loans [Member]
Loan receivable	1,430,861	[1]	1,343,072	[2]
Consumer and Other [Member] | Non Covered Loans [Member]
Loan receivable	17,897,522		18,107,198
Consumer and Other [Member] | Covered Loans [Member]
Loan receivable	4,166,971	[1]	4,821,179	[2]
Non Covered Loans [Member]
Loan receivable	435,810,568		436,966,775
Covered Loans [Member]
Loan receivable	$ 160,334,375	[1]	$ 179,493,537	[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.