Income Taxes (Summary of Deferred Tax Assets and Liabilities) (Details) - USD ($)	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Financial basis in excess of tax basis, principally intangible drilling costs capitalized for financial purposes and expensed for tax purposes	$ 38,185,387	$ 33,656,415
Derivative contracts	200,786
Total deferred tax liabilities	38,386,173	33,656,415
State net operating loss carry forwards	655,741	259,981
AMT credit carry forwards	3,499,320
Deferred directors' compensation	1,295,333	1,273,279
Restricted stock expense	411,019	494,776
Derivative contracts		166,597
Statutory depletion carry forwards	634,405
Other	839,348	785,775
Total Deferred tax assets	7,335,166	2,980,408
Net deferred tax liabilities	$ 31,051,007	$ 30,676,007