Summary Of Significant Accounting Policies (Narrative) (Details)		12 Months Ended
	Oct. 12, 2017 USD ($)	Sep. 30, 2017 USD ($) a Item $ / a		Sep. 30, 2016 USD ($)		Sep. 30, 2015 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of Oil, NGL and Natural Gas Production Units | Item		6,095
Oil, NGL and natural gas revenues were derived from the sale of natural gas		55.00%
Amount of Material Natural Gas Imbalances		$ 0		$ 0
Outstanding letters of credit		0
Fair value of derivative contracts, liability				428,271
Fair value of derivative contracts, asset		516,159
Book value of Non-producing oil and natural gas		$ 3,079,008		3,349,567
Percentage of perpetual ownership of mineral interests in Arkansas ,New Mexico, North Dakota, Oklahoma and Texas		91.00%
Accumulated period perpetual rights		91 years
Non Producing Minerals Area | a		198,176
Number of tracts owned | Item		6,284
Amount of acres average tract contains | a		29
Tracts Average Cost Per Acre | $ / a		40
Amortized Period of Non-producing Minerals		33 years
Impairment		$ 662,990	[1]	12,001,271	[1]	$ 5,009,191
Number of non-core marginal wells held for sale | Item		68
Proceeds from sales of assets		$ 723,700		4,501,726
Impairment expense		616,711
Net amount of assets		443,068,337		443,113,400
Accumulated DD&A		246,483,979		251,707,749
Amount of Capitalized Interest Included in the Company's Capital Expenditures		168,351		24,929		148,493
Interest Expense		1,275,138		1,344,619		1,550,483
Provision (benefit) for income taxes		689,000		(7,711,000)		4,836,000
ASU 2015-15 [Member] | Other Property and Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Unamortized debt issuance expense		141,956		263,584
ASU 2015-17 [Member]
Summary Of Significant Accounting Policies [Line Items]
Prior period reclassification				310,900
ASU 2016-15 [Member]
Summary Of Significant Accounting Policies [Line Items]
Prior period reclassification		5,194,290		$ 8,049,434		$ 2,053,900
ASU 2016-09 [Member]
Summary Of Significant Accounting Policies [Line Items]
Provision (benefit) for income taxes		(238,000)
Held for Sale [Member]
Summary Of Significant Accounting Policies [Line Items]
Net amount of assets		14,929,309
Accumulated DD&A		$ 14,371,559
Subsequent Event [Member]
Summary Of Significant Accounting Policies [Line Items]
Proceeds from sales of assets	$ 557,750
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful life of furniture and fixtures		5 years
Restricted Stock Awards, vesting period		3 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful life of furniture and fixtures		8 years
Restricted Stock Awards, vesting period		5 years
Sales Revenue, Net [Member] | Product Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Total sale volume from sale of natural gas		74.00%

[1] At the end of each quarter, the Company assessed the carrying value of its producing properties for impairment. This assessment utilized estimates of future cash flows or fair value (selling price) less cost to sell if the property is held for sale. Significant judgments and assumptions in these assessments include estimates of future oil, NGL and natural gas prices using a forward NYMEX curve adjusted for projected inflation, locational basis differentials, drilling plans, expected capital costs and an applicable discount rate commensurate with risk of the underlying cash flow estimates. These assessments identified certain properties with carrying value in excess of their calculated fair values.