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Note 6 - Accrued Liabilities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Notes Tables |
Schedule of Accrued Liabilities [Table Text Block] |
|  | December 31, |
|  | 2022 |  |  | 2021 |
Payroll, bonus, and benefits |  | $ | 88 |  |  | $ | 41 |
Legal and consulting |  |  | 403 |  |  |  | 371 |
Well development |  |  | 709 |  |  |  | 113 |
Water project |  |  | 85 |  |  |  | - |
Other accrued expenses |  |  | 260 |  |  |  | 283 |
|  | $ | 1,545 |  |  | $ | 808 |

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration