Revenues (Summary of Disaggregation of Company's Natural Gas, Oil and NGL Revenues) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	$ 19,561,568	$ 10,899,820	$ 48,032,597	$ 25,670,624
Royalty Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	12,473,415	5,412,842	29,072,927	12,424,644
Working Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	7,088,153	5,486,978	18,959,670	13,245,980
Oil [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	5,148,879	3,538,962	13,436,689	9,024,949
Oil [Member] | Royalty Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	3,340,065	1,934,966	7,784,554	4,748,987
Oil [Member] | Working Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	1,808,814	1,603,996	5,652,135	4,275,962
NGL [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	1,460,503	1,102,261	4,417,693	2,555,180
NGL [Member] | Royalty Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	675,829	453,935	2,008,959	1,095,124
NGL [Member] | Working Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	784,674	648,326	2,408,734	1,460,056
Natural Gas [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	12,952,186	6,258,597	30,178,215	14,090,495
Natural Gas [Member] | Royalty Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	8,457,521	3,023,941	19,279,414	6,580,533
Natural Gas [Member] | Working Interest [Member]
Disaggregation Of Revenue [Line Items]
Natural gas, oil and NGL sales	$ 4,494,665	$ 3,234,656	$ 10,898,801	$ 7,509,962