Supplementary Information On Oil, Ngl And Natural Gas Reserves (Narrative) (Details) (USD $)	12 Months Ended
	Sep. 30, 2014 Mcfe	Sep. 30, 2013 Mcfe	Sep. 30, 2012
Supplementary Oil And Gas Disclosures [Line Items]
Positive pricing revisions	3,300,000
Positive pricing revisions, developed	2,600,000
Positive pricing revisions, undeveloped	700,000
Negative performance revisions	4,700,000
Negative performance revisions, developed	1,700,000
Negative performance revisions, undeveloped	3,000,000
Property acquisition costs	$ 83,405,404	$ 1,242,615	$ 20,404,465
Proved Undeveloped Reserves	90,904,931	58,734,656
Proved undeveloped reserves transferred to proved developed	17,488,307
Revisions	2,251,443
Percentage transferred to proved developed		30.00%
Performance revision percentage		5.00%
Total proved undeveloped reserves moved out	20,500,000
Percentage of proved undeveloped reserves moved out		35.00%
Period for converting PUD to PDP	5 years
Period after which reserves associated with undrilled PUD locations will be removed from proved reserves as revisions	5 years
Number of PUD location	9.00%
Eagle Ford Shale [Member]
Supplementary Oil And Gas Disclosures [Line Items]
Property acquisition costs	81,700,000
Arkansas Fayetteville Shale [Member]
Supplementary Oil And Gas Disclosures [Line Items]
Property acquisition costs			$ 17,400,000
Oil [Member]
Supplementary Oil And Gas Disclosures [Line Items]
Price used to calculate reserves and future cash flows from reserves	96.94	89.06	89.41
Natural Gas Liquids [Member]
Supplementary Oil And Gas Disclosures [Line Items]
Price used to calculate reserves and future cash flows from reserves	31.45	27.28	35.70
Natural Gas [Member]
Supplementary Oil And Gas Disclosures [Line Items]
Price used to calculate reserves and future cash flows from reserves	4.04	3.33	2.51