Revenues (Summary Of Disaggregation Of Company's Natural Gas, Oil and NGL Revenues) (Details) - USD ($)	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	$ 69,860,631	$ 37,749,044	$ 23,370,003
Royalty Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	44,484,472
Working Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	25,376,159
Natural Gas Revenue [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	45,767,665
Natural Gas Revenue [Member] | Royalty Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	30,837,464
Natural Gas Revenue [Member] | Working Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	14,930,201
Oil Revenue [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	18,130,919
Oil Revenue [Member] | Royalty Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	10,851,353
Oil Revenue [Member] | Working Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	7,279,566
NGL Revenue [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	5,962,047
NGL Revenue [Member] | Royalty Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	2,795,655
NGL Revenue [Member] | Working Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	$ 3,166,392