The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromSaleOfOilAndGasPropertyAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Subsequent Events - Additional Information (Details)		9 Months Ended
Subsequent Events - Additional Information (Details)	Jul. 28, 2020 USD ($) a	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)
Subsequent Event [Line Items]
Proceeds from sales of assets		$ 3,457,500	$ 13,114,969
Subsequent Event [Member] \| Northwest Oklahoma [Member]
Subsequent Event [Line Items]
Mineral acreage sold \| a	5,925
Proceeds from sales of assets	$ 793,617