Note 1 - Organization (Details Textual) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended	24 Months Ended
	May 31, 2023 USD ($)	Apr. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) $ / shares bbl	Jun. 30, 2023 USD ($) $ / shares	Jun. 30, 2024 USD ($) $ / shares bbl	Jun. 30, 2023 USD ($) $ / shares	Dec. 31, 2023 USD ($)	Apr. 30, 2027 USD ($)
Distillation Tower, Volume Per Day (Barrel of Oil) | bbl			15,000		15,000
Volume of Storage Tank Capacity (Barrel of Oil) | bbl			1,250,000		1,250,000
Number of Operating Segments					2
Working Capital (Deficit)			$ 17,600		$ 17,600		$ (6,100)
Working Capital (Deficit), Change From Previous Reporting Period					23,800
Secured Debt, Current			15,300		15,300		39,400
Secured Debt, Current, Change From Previous Reporting Period					24,200
Assets, Current			49,624		49,624		49,290
Assets, Current, Change From Previous Reporting Period					300
Liabilities, Current			31,979		31,979		55,425
Liabilities, Current, Change From Previous Reporting Period					23,400
Repayments of Long-Term Debt					1,237	$ 744
Net Income (Loss) Attributable to Parent			$ (6,350)	$ (1,560)	$ 274	$ 15,193
Earnings Per Share, Basic (in dollars per share) | $ / shares			$ (0.43)	$ (0.1)	$ 0.02	$ 1.02
Net Income (Loss), Change From Previous Reporting Period			$ 4,800		$ 14,900
Earnings Per Share Basic, Change From Previous Reporting Period (in dollars per share) | $ / shares			$ 0.33		$ 1
An Affiliate Combined with Jonathan Carroll [Member]
Ownership Percentage			83.00%		83.00%
Nonrelated Party [Member] | Veritex Community Bank [Member]
Repayments of Long-Term Debt					$ 4,300
Escrow Deposit			$ 1,000		1,000
Legal Fees					40
Nonrelated Party [Member] | Kissick Forbearance Agreement [Member]
Debt Instrument, Periodic Payment		$ 500			500
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid			400		400		400
Repayments of Notes Payable			1,500	$ 1,500	3,000	$ 1,500
Nonrelated Party [Member] | LEH Forbearance Agreement [Member]
Debt Instrument, Periodic Payment	$ 50						$ 50
Repayments of Notes Payable			$ 100	$ 100	$ 200	$ 100
Nonrelated Party [Member] | LEH Forbearance Agreement [Member] | Forecast [Member]
Debt Instrument, Periodic Payment								$ 400