Note 12 - Fair Value Measurements (Detail) - Unobservable Inputs for Level 3 Fair Value Measurements (USD $)					3 Months Ended
	Dec. 31, 2012		Sep. 30, 2012		Dec. 31, 2012 Oil Collars [Member] Minimum [Member]	Dec. 31, 2012 Oil Collars [Member] Maximum [Member]	Dec. 31, 2012 Oil Collars [Member]	Dec. 31, 2012 Natural Gas Collars [Member] Minimum [Member]	Dec. 31, 2012 Natural Gas Collars [Member] Maximum [Member]	Dec. 31, 2012 Natural Gas Collars [Member]
Price volatility curve, percentage					0.00%	0.00%		0.00%	29.39%
Price volatility curve, percentage					0.00%	0.00%		0.00%	29.39%
Weighted average of price volatility curve, percentage							0.00%			20.14%
Fair Value (in Dollars)	$ 764,643	[1]		[1]			$ 14,980			$ 749,663

[1] See Fair Value Measurements section for further disclosures regarding fair value of financial instruments.