Income Taxes (Summary of Difference Between Provision (Benefit) for Income Taxes and Amount which Would Result from Application of Federal Statutory Rate) (Details) - USD ($)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes at statutory rate	$ (1,429,291)	$ (6,765,705)	$ (11,387,447)
Change in valuation allowance	1,228,899	96,000
Percentage depletion	(412,650)	(258,300)	(431,340)
State income taxes, net of federal provision (benefit)	(176,960)	(939,310)	(1,986,850)
Effect of NOL Carryback Rate		(610,803)
Restricted stock tax benefit	76,000	58,000	185,000
Deferred directors’ compensation benefit	54,000	79,000	(38,000)
Law change	47,000
Other	(38,049)	52,118	177,637
Provision (benefit) for income taxes	$ (651,051)	$ (8,289,000)	$ (13,481,000)