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Note 2 - Basis of Presentation and Summary of Significant Accounting Policies - Other Property and Equipment, Net (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Other property and equipment, net | $ 3,141 | $ 3,201
Land [Member] |  |
Other property and equipment, net | 1,869 | 1,869
Transportation Equipment [Member] |  |
Other property and equipment, net | 569 | 620
Building [Member] |  |
Other property and equipment, net | 513 | 516
Leasehold Improvements [Member] |  |
Other property and equipment, net | 189 | 193
Field Equipment [Member] |  |
Other property and equipment, net | 1 | 2
Furniture and Fixtures [Member] |  |
Other property and equipment, net | $ 0 | $ 1

X
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