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The number of pipeline rights-of-way.

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Note 15 - Commitments and Contingencies (Details Textual)			1 Months Ended					6 Months Ended	11 Months Ended
	Feb. 19, 2024 USD ($)	May 09, 2019	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Apr. 30, 2023 USD ($)	Jan. 31, 2023 USD ($)	Oct. 31, 2021 USD ($)	Jun. 30, 2024 USD ($)	Nov. 30, 2022 USD ($)	Mar. 31, 2024 USD ($)	Jan. 26, 2024 USD ($)	Dec. 31, 2023 USD ($)	Oct. 24, 2023 USD ($)	Dec. 31, 2022 USD ($)	Oct. 24, 2022 bbl	Mar. 31, 2018 USD ($)	Feb. 28, 2018 USD ($)
Loss Contingency, Estimate of Possible Loss								$ 1,505,000				$ 823,000
Asset Retirement Obligation												4,504,000		$ 3,710,000
Payments for Loans				$ 200,000	$ 1,100,000	$ 1,500,000
Proceeds from Sale of Oil and Gas Property and Equipment					$ 185,000
Surety Bonds								230,000				230,000
Civil Penalty								200,000			$ 200,000		$ 200,000
Rli Surety Bonds [Member]
Customer Funds								1,250,000
Collateralized Financings								200,000
Letters of Credit Outstanding, Amount								$ 1,000,000
Guarantor Obligations, Liquidation Proceeds, Percentage								50.00%
Rli Surety Bonds [Member] \| Minimum [Member]
Customer Funds								$ 1,250,000
Rli Surety Bonds [Member] \| Maximum [Member]
Customer Funds								300,000
Informal Settlement Agreement With OSHA [Member]
Litigation Settlement, Fee Expense									$ 50,000.00
RLI Filing for Injunction of Payment [Member] \| Pending Litigation [Member]
Loss Contingency, Damages Sought, Value	$ 1,000,000
TCEQ Proposed Agreed Order [Member] \| Pending Litigation [Member]
Estimated Litigation Liability								400,000
Loss Contingency, Damages Sought, Value			$ 350,000				$ 400,000
Blue Dolphin Pipe Line Company (BDPL) [Member]
Asset Retirement Obligation								3,000,000				4,500,000
Blue Dolphin Pipe Line Company (BDPL) [Member] \| Bureau of Safety and Environmental Enforcement (BSEE) [Member]
Estimated Litigation Liability								0				0
Asset Retirement Obligation								3,000,000				4,500,000
Blue Dolphin Pipe Line Company (BDPL) [Member] \| Bureau of Safety and Environmental Enforcement (BSEE) [Member] \| Civil Penalty [Member]
Loss Contingency, Estimate of Possible Loss										$ 200,000	$ 200,000		$ 200,000
Blue Dolphin Pipe Line Company (BDPL) [Member] \| Bureau of Ocean Energy Management (BOEM) [Member]
Estimated Litigation Liability								0				0
Financial Assurance for Decommissioning of Pipeline in Federal Waters																	$ 900,000
Additional Financial Assurance for Pipeline Rights-of-way																$ 4,800,000
Number of Pipeline Rights-of-way																5
Financial Assurance Increase (decrease) For Pipeline																$ 3,900,000
Surety Bonds								900,000				$ 900,000
Credit-baked Surety Bonds								700,000
Cash-backed Surety Bonds								$ 200,000
Pilot Travel Centers LLC [Member] \| Terminal Services Agreement With Nixon [Member]
Long-Term Purchase Commitment, Non-renewal Period (Day)		60 days
Oil and Gas Properties, Volume Sold (Barrel of Oil) \| bbl															185,000