Related Parties (Details) - USD ($)	3 Months Ended
Related Parties (Details) - USD ($)	Mar. 31, 2025	Mar. 31, 2024
Related Parties (Details) [Line Items]
Related Party Transaction, Description of Transaction	subsequent to the Partnership’s first asset purchase, which occurred on February 1, 2018, the Partnership is required to pay quarterly an annual fee of 0.5% of the total gross equity proceeds raised by the Partnership in its best-efforts offering.
General Partner [Member]
Related Parties (Details) [Line Items]
Selling, General and Administrative Expense	$ 273,000	$ 273,000
Other Liabilities, Current	$ 89,000	$ 78,000

A description of the related party transaction, including transactions to which no amounts or nominal amounts were ascribed and such other information deemed necessary to an understanding of the effects of the transactions on the financial statements. Examples of common related party transactions are, sales, purchases and transfers of realty and personal property, services received or furnished, loans and leases to and from top management and affiliates.

ENERGY RESOURCES 12, L.P. 10-Q