Information about Oil and Gas Producing Activities (Details 2)		12 Months Ended
		Dec. 31, 2024 MBbls Mcf	Dec. 31, 2023 MBbls Mcf
Oil [Member]
Oil and Gas, Proved Reserve, Quantity [Line Items]
Beginning of year		150.9	218.2
Revisions of previous estimates	[1]	23.7	0.3
Production		(45.2)	(67.6)
End of year		129.4	150.9
Beginning of year		101.5	143.3
End of year		59.4	101.5
Beginning of year		49.4	74.9
End of year		70.0	49.4
NGL (BBLS) [Member]
Oil and Gas, Proved Reserve, Quantity [Line Items]
Beginning of year		17.7	18.9
Revisions of previous estimates	[1]	0.4	7.9
Production		(5.3)	(9.1)
End of year		12.8	17.7
Beginning of year		12.7	13.8
End of year		7.1	12.7
Beginning of year		5.0	5.1
End of year		5.7	5.0
Natural Gas [Member]
Oil and Gas, Proved Reserve, Quantity [Line Items]
Beginning of year | Mcf		87.5	113.0
Revisions of previous estimates | Mcf	[1]	21.9	22.4
Production | Mcf		(32.7)	(47.9)
End of year | Mcf		76.7	87.5
Beginning of year | Mcf		62.9	82.7
End of year | Mcf		42.5	62.9
Beginning of year | Mcf		24.6	30.3
End of year | Mcf		34.2	24.6
Other Nonrenewable Natural Resources [Member]
Oil and Gas, Proved Reserve, Quantity [Line Items]
Beginning of year	[2]	183.2	255.9
Revisions of previous estimates	[1],[2]	27.7	12.0
Production	[2]	(56.0)	(84.7)
End of year	[2]	154.9	183.2
Beginning of year	[2]	124.7	170.9
End of year	[2]	73.5	124.7
Beginning of year	[2]	58.5	85.0
End of year	[2]	81.4	58.5

[1] Revisions of previous estimates were attributable to well performance. In addition, effective January 1, 2023, the fixed percentage overriding royalty interest of 8.16% in the Fund’s net revenue interest in the Beta Project’s oil and natural gas production became payable to the Fund’s former lender, which was conveyed pursuant to the Fund’s credit agreement applicable to the project. The effect of this conveyance in the reserves was included within revisions of previous estimates.

[2] BOE refers to barrel of oil equivalent. Barrel of oil equivalent is based on six MCF of natural gas to one barrel of oil or one barrel of NGL, which reflects an energy content equivalency and not a price or revenue equivalency.