Supplementary Information On Natural Gas, Oil And NGL Reserves (Summary of Proved Developed and Undeveloped Reserves) (Details)	Sep. 30, 2022 Mcf bbl	Sep. 30, 2021 bbl Mcf	Sep. 30, 2020 bbl Mcf
Natural Gas [Member]
Reserve Quantities [Line Items]
Proved Developed Reserves (Volume) | Mcf	50,304,185	60,287,881	40,924,083
Proved Undeveloped Reserves (Volume) | Mcf	11,933,021	4,664,787	1,448,690
Oil [Member]
Reserve Quantities [Line Items]
Proved Developed Reserves (Volume)	1,275,853	1,439,860	1,148,989
Proved Undeveloped Reserves (Volume)	106,924	64,980	184,668
NGL [Member]
Reserve Quantities [Line Items]
Proved Developed Reserves (Volume)	1,698,046	1,467,092	1,135,864
Proved Undeveloped Reserves (Volume)	64,637	34,761	83,993