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Note 16 - Subsequent Events (Details Textual) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Jun. 30, 2025 | Mar. 31, 2025 | Mar. 31, 2024
Impairment, Oil and Gas, Property with Unproved and Proved Reserves |  | $ 0 | $ 5,419
Minimum [Member] | Forecast [Member] |  |  |
Impairment, Oil and Gas, Property with Unproved and Proved Reserves | $ 7,000 |  |
Maximum [Member] | Forecast [Member] |  |  |
Impairment, Oil and Gas, Property with Unproved and Proved Reserves | $ 8,000 |  |

X
- Definition Amount of impairment loss for oil and gas properties with proved and unproved reserves in oil- and gas-producing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-2 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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- Details
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Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Data Type: | na
Balance Type: |
Period Type: |