INVESTMENTS AND RELATED COMMITMENTS AND CONTINGENT LIABILITIES, INCLUDING GUARANTIES (Details)		1 Months Ended		3 Months Ended	9 Months Ended
	Jun. 20, 2023 USD ($)	Nov. 30, 2023	Aug. 31, 2021	Sep. 30, 2025 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	May 31, 2022 Property	Dec. 31, 2021	Jul. 31, 2020	Dec. 31, 2019	Dec. 31, 2016 USD ($)	Dec. 31, 2008	Dec. 31, 1992 a
Schedule of Equity Method Investments [Line Items]
Equity method investments				$ 1,803,378	$ 1,803,378	$ 2,479,433
Other Investments				3,820,097	3,820,097	3,176,329
Corporate Office from Broadway
Schedule of Equity Method Investments [Line Items]
Rent expense					33,537
Equity method investments				$ 137,517	$ 137,517	119,570
Broadway 68
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)				33.00%	33.00%
Broadway 72
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)								40.00%
Equity method investments				$ 1,014,433	$ 1,014,433	1,024,460
QSN
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)											20.00%
Equity method investments				341,095	341,095	331,665
QSN \| Development Loan
Schedule of Equity Method Investments [Line Items]
Value of guaranteed loans											$ 620,000
Stott's Mill
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)							50.00%
Number of residential lots \| Property							2
Other Investments				0	0	686,353
Proceeds from sale of land					646,432
Loss on Sale of Investments					39,921
BHR2
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)		15.06%	15.06%
Other Investments				310,333	310,333	317,385
Annual return on investment (as a percent)		11.00%	11.00%
Bailey
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)												10.00%
Other Investments				5,434	5,434
Cloudburst
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)										8.85%
Other Investments				1,596,007	1,596,007	1,596,007
Genlith
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)									5.15%
Other Investments				140,000	140,000
OKC
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)													10.00%
Other Investments				0	0	67,482
Area of land (acre) \| a													260
Proceeds from sale of land					398,518
VCC \| Oil and Gas, Special Investment Vehicles
Schedule of Equity Method Investments [Line Items]
Special investment vehicles				$ 282,306	$ 282,306	227,306
VCC Venture
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)				2.00%	2.00%
Other Investments				$ 187,500	$ 187,500	156,250
Committed investment					$ 250,000
Committed investment ratio (as a percent)					75.00%
Cortado II-A
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)				2.00%	2.00%
Other Investments				$ 850,000	$ 850,000	600,000
Committed investment	$ 1,000,000
Committed investment ratio (as a percent)					85.00%
Cypress Member
Schedule of Equity Method Investments [Line Items]
Ownership percentage (as a percent)				15.00%	15.00%
Other Investments				$ 750,000	$ 750,000	$ 375,000
Committed investment				$ 750,000
Committed investment ratio (as a percent)				100.00%

RESERVE PETROLEUM CO 10-Q