Note 11 - Derivatives (Detail) (USD $)	Dec. 31, 2012	Sep. 30, 2012
Derivative Assets (Liabilities), at Fair Value, Net (in Dollars)	$ 764,643	$ (172,271)
$3.00 floor / $3.70 ceiling [Member] | Natural Gas Costless Collars [Member] | 150,000 Mmbtu [Member] | November 2012 - January 2013 [Member] | Contract 1 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.00
$3.00 floor / $3.70 ceiling [Member] | Natural Gas Costless Collars [Member] | 150,000 Mmbtu [Member] | November 2012 - January 2013 [Member] | Contract 1 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.70
$3.00 floor / $3.70 ceiling [Member] | Natural Gas Costless Collars [Member] | 150,000 Mmbtu [Member] | November 2012 - January 2013 [Member] | Contract 1 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	150,000
$3.00 floor / $3.70 ceiling [Member] | Natural Gas Costless Collars [Member] | 150,000 Mmbtu [Member] | November 2012 - January 2013 [Member] | Contract 2 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.00
$3.00 floor / $3.70 ceiling [Member] | Natural Gas Costless Collars [Member] | 150,000 Mmbtu [Member] | November 2012 - January 2013 [Member] | Contract 2 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.70
$3.00 floor / $3.70 ceiling [Member] | Natural Gas Costless Collars [Member] | 150,000 Mmbtu [Member] | November 2012 - January 2013 [Member] | Contract 2 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	150,000
$3.00 floor / $3.65 ceiling [Member] | Natural Gas Costless Collars [Member] | 50,000 Mmbtu [Member] | November 2012 - January 2013 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.00
$3.00 floor / $3.65 ceiling [Member] | Natural Gas Costless Collars [Member] | 50,000 Mmbtu [Member] | November 2012 - January 2013 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.65
$3.00 floor / $3.65 ceiling [Member] | Natural Gas Costless Collars [Member] | 50,000 Mmbtu [Member] | November 2012 - January 2013 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	50,000
$3.75 floor / $4.25 ceiling [Member] | Natural Gas Costless Collars [Member] | February 2013 - December 2013 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.75
$3.75 floor / $4.25 ceiling [Member] | Natural Gas Costless Collars [Member] | February 2013 - December 2013 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	4.25
$3.75 floor / $4.25 ceiling [Member] | Natural Gas Costless Collars [Member] | February 2013 - December 2013 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	80,000
$3.75 floor / $4.30 ceiling [Member] | Natural Gas Costless Collars [Member] | February 2013 - December 2013 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.75
$3.75 floor / $4.30 ceiling [Member] | Natural Gas Costless Collars [Member] | February 2013 - December 2013 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	4.30
$3.75 floor / $4.30 ceiling [Member] | Natural Gas Costless Collars [Member] | February 2013 - December 2013 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	50,000
$3.75 floor / $4.05 ceiling [Member] | Natural Gas Costless Collars [Member] | February 2013 - December 2013 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.75
$3.75 floor / $4.05 ceiling [Member] | Natural Gas Costless Collars [Member] | February 2013 - December 2013 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	4.05
$3.75 floor / $4.05 ceiling [Member] | Natural Gas Costless Collars [Member] | February 2013 - December 2013 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	100,000
NYMEX -$.29 [Member] | Natural Gas Basis Protection Swaps [Member] | January - December 2012 [Member] | CEGT [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	50,000
NYMEX -$.29 [Member] | Natural Gas Basis Protection Swaps [Member] | January - December 2012 [Member] | PEPL [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	50,000
NYMEX -$.30 [Member] | Natural Gas Basis Protection Swaps [Member] | January - December 2012 [Member] | CEGT [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	40,000
NYMEX -$.30 [Member] | Natural Gas Basis Protection Swaps [Member] | January - December 2012 [Member] | PEPL [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	50,000
$2.50 floor / $3.25 ceiling [Member] | Natural Gas Costless Collars [Member] | March - October 2012 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	2.50
$2.50 floor / $3.25 ceiling [Member] | Natural Gas Costless Collars [Member] | March - October 2012 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.25
$2.50 floor / $3.25 ceiling [Member] | Natural Gas Costless Collars [Member] | March - October 2012 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	50,000
$2.50 floor/ $3.10 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	2.50
$2.50 floor/ $3.10 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.10
$2.50 floor/ $3.10 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	120,000
$2.50 floor / $3.20 ceiling [Member] | Natural Gas Costless Collars [Member] | 60,000 Mmbtu [Member] | April - October 2012 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	2.50
$2.50 floor / $3.20 ceiling [Member] | Natural Gas Costless Collars [Member] | 60,000 Mmbtu [Member] | April - October 2012 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.20
$2.50 floor / $3.20 ceiling [Member] | Natural Gas Costless Collars [Member] | 60,000 Mmbtu [Member] | April - October 2012 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	60,000
$2.50 floor / $3.20 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	2.50
$2.50 floor / $3.20 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.20
$2.50 floor / $3.20 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	50,000
$2.50 floor / $3.45 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	2.50
$2.50 floor / $3.45 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.45
$2.50 floor / $3.45 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	50,000
$2.50 floor / $3.30 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	2.50
$2.50 floor / $3.30 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.30
$2.50 floor / $3.30 ceiling [Member] | Natural Gas Costless Collars [Member] | April - October 2012 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	50,000
$2.50 floor / $3.30 ceiling [Member] | Natural Gas Costless Collars [Member] | August - October 2012 [Member] | Minimum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	2.50
$2.50 floor / $3.30 ceiling [Member] | Natural Gas Costless Collars [Member] | August - October 2012 [Member] | Maximum [Member] | NYMEX Henry Hub [Member]
Derivative, Swap Type, Fixed Price	3.30
$2.50 floor / $3.30 ceiling [Member] | Natural Gas Costless Collars [Member] | August - October 2012 [Member] | NYMEX Henry Hub [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	50,000
$90 floor / $105 ceiling [Member] | Oil costless collars [Member] | January - December 2012 [Member] | Minimum [Member] | NYMEX WTI [Member]
Derivative, Swap Type, Fixed Price	90
$90 floor / $105 ceiling [Member] | Oil costless collars [Member] | January - December 2012 [Member] | Maximum [Member] | NYMEX WTI [Member]
Derivative, Swap Type, Fixed Price	105
$90 floor / $105 ceiling [Member] | Oil costless collars [Member] | January - December 2012 [Member] | NYMEX WTI [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	2,000
$90 floor / $110 ceiling [Member] | Oil costless collars [Member] | February - December 2012 [Member] | Minimum [Member] | NYMEX WTI [Member]
Derivative, Swap Type, Fixed Price	90
$90 floor / $110 ceiling [Member] | Oil costless collars [Member] | February - December 2012 [Member] | Maximum [Member] | NYMEX WTI [Member]
Derivative, Swap Type, Fixed Price	110
$90 floor / $110 ceiling [Member] | Oil costless collars [Member] | February - December 2012 [Member] | NYMEX WTI [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	3,000
$90 floor / $114 ceiling [Member] | Oil costless collars [Member] | May - December 2012 [Member] | Minimum [Member] | NYMEX WTI [Member]
Derivative, Swap Type, Fixed Price	90
$90 floor / $114 ceiling [Member] | Oil costless collars [Member] | May - December 2012 [Member] | Maximum [Member] | NYMEX WTI [Member]
Derivative, Swap Type, Fixed Price	114
$90 floor / $114 ceiling [Member] | Oil costless collars [Member] | May - December 2012 [Member] | NYMEX WTI [Member]
Derivative Contract Volume (in British Thermal Units and Barrels of Oil Equivalent)	2,000