Note 7 - Commitments and Contingencies (Details Textual) - shares		9 Months Ended
Apr. 13, 2021	Apr. 30, 2023
West Lenapah Project [Member] \| Calihoma Partners LLC [Member]
Equity Method Investment, Ownership Percentage	60.00%
Calihoma Partners LLC [Member]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Calihoma Partners LLC [Member] \| Scenario, Plan [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	5,000,000
Calihoma Partners LLC [Member] \| Common Stock to be Issued [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	5,000,000	5,000,000
Calihoma Partners LLC [Member] \| NMEX Natural Gas LLC [Member]
Equity Method Investment, Ownership Percentage	35.00%

Number of shares of equity interests issued or issuable to acquire entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479581/805-30-50-1

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479328/805-10-50-2

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

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