Income Taxes (Summary of Deferred Tax Assets and Liabilities) (Details) - USD ($)	Sep. 30, 2018	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Financial basis in excess of tax basis, principally intangible drilling costs capitalized for financial purposes and expensed for tax purposes	$ 24,560,165	$ 38,185,387
Derivative contracts		200,786
Total deferred tax liabilities	24,560,165	38,386,173
State net operating loss carry forwards	551,435	655,741
AMT credit carry forwards	2,936,457	3,499,320
Deferred directors' compensation	725,971	1,295,333
Restricted stock expense	249,610	411,019
Derivative contracts	878,767
Statutory depletion carry forwards		634,405
Other	1,129,918	839,348
Total Deferred tax assets	6,472,158	7,335,166
Net deferred tax liabilities	$ 18,088,007	$ 31,051,007