Note 5 - Oil and Gas Leases - Oil and Gas Leasing Activities (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Royalty interests | $ 415,469 | $ 417,846 |
| Lease fees | 0 | 0 |
| Oil and Gas, Result of Operation, Revenue | 415,469 | 417,846 |
| Production costs | (36,228) | (46,436) |
| Results before income tax expense | 379,241 | 371,410 |
| Estimated income tax expense | (97,086) | (95,081) |
| Results of operations from producing activities excluding corporate overhead | $ 282,155 | $ 276,329 |
| X | ||||||||||
- Definition The amount of revenue relating to lease fees. No definition available.
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| X | ||||||||||
- Definition Amount of royalty interest from oil and gas producing activities. No definition available.
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| X | ||||||||||
- Definition Amount of cost charged to expense in oil- and gas-producing activities. Excludes general corporate overhead and interest cost. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, before income tax expense (benefit), of result of operation in oil- and gas-producing activities. Excludes corporate overhead and interest costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of income tax expense (benefit) in oil- and gas-producing activities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after income tax expense (benefit), of result of operation in oil- and gas-producing activities. Excludes corporate overhead and interest costs. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of revenue in oil- and gas-producing activities. Excludes royalty payment and net profit disbursement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|