Note 11 - Related Party Transactions (Details Textual) Pure in Millions, $ in Millions				6 Months Ended	9 Months Ended	12 Months Ended
	Jul. 31, 2023 shares	Jul. 19, 2023 shares	Sep. 02, 2022 shares	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	May 31, 2022
Stock Issued During Period, Shares, New Issues | shares		14,835,000	3,933,376
Existing Stockholders [Member] | Public Stock Offering [Member]
Stock Issued During Period, Shares, New Issues | shares	10,000,000
Pilot Exploration Inc. [Member]
Supply Commitment, Minimum Barrels of Produced Water							29.2
Pilot Exploration Inc. [Member] | Water Treatment Services [Member]
Related Party Transaction, Amounts of Transaction | $						$ 2.0
Pilot Exploration Inc. [Member] | Water Treatment Services [Member] | Flat Top Operating Area [Member]
Related Party Transaction, Amounts of Transaction | $				$ 6.5	$ 1.5	$ 1.6