Properties And Equipment - Summary of Property Divestitures (Details)		3 Months Ended				9 Months Ended
		Jun. 30, 2022 USD ($) a Well	Mar. 31, 2022 USD ($) a	Dec. 31, 2021 USD ($) Well	Jun. 30, 2021 USD ($) a	Jun. 30, 2022 USD ($) Well	Jun. 30, 2021 USD ($)
Property Plant And Equipment [Line Items]
Sale Price						$ 7,852,389	$ 533,371
TX
Property Plant And Equipment [Line Items]
Net mineral acres | a	[1],[2]	43	130
Sale Price	[1]	$ 100,000	$ 500,000
Gain/(Loss)	[1]	$ 100,000	$ 500,000
OK
Property Plant And Equipment [Line Items]
Wellbores | Well	[1],[3]	9		98		9
Sale Price	[1]	$ 300,000		$ 2,000,000
Gain/(Loss)	[1]	$ 100,000		$ (3,500,000)
OK
Property Plant And Equipment [Line Items]
Net mineral acres | a	[1],[2]	83
Sale Price	[1]	$ 100,000
Gain/(Loss)	[1]	$ 100,000
OK
Property Plant And Equipment [Line Items]
Wellbores | Well	[1],[3]	16				16
Sale Price	[1]	$ 100,000
OK
Property Plant And Equipment [Line Items]
Wellbores | Well	[1],[3]	2				2
Sale Price	[1]	$ 100,000
Gain/(Loss)	[1]	$ 100,000
AR / OK / TX
Property Plant And Equipment [Line Items]
Net mineral acres | a	[1],[2]	2,225
Sale Price	[1]	$ 300,000
Gain/(Loss)	[1]	$ 300,000
NM / TX
Property Plant And Equipment [Line Items]
Net mineral acres | a	[1],[2]		7,071
Sale Price	[1]		$ 1,600,000
Gain/(Loss)	[1]		$ 1,600,000
OK / TX
Property Plant And Equipment [Line Items]
Wellbores | Well	[1],[3]			95
Sale Price	[1]			$ 500,000
Gain/(Loss)	[1]			$ 200,000
AR
Property Plant And Equipment [Line Items]
Wellbores | Well	[1],[3]			499
Sale Price	[1]			$ 2,100,000
Gain/(Loss)	[1]			$ 1,100,000
Central Basin Platform, TX [Member]
Property Plant And Equipment [Line Items]
Net mineral acres | a	[1],[2]				2,857
Sale Price	[1]				$ 300,000
Gain/(Loss)	[1]				$ 200,000

[1] Excludes immaterial divestitures.

[2] Number of net mineral acres sold.

[3] Number of wellbores associated with working interests sold.