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Note 6 - Debt (Details Textual) $ in Millions	Jan. 05, 2022 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jul. 26, 2022 USD ($)
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Credit Agreement [Member]
Debt Instrument, Face Amount	$ 15		$ 20		$ 20
Line of Credit Facility, Maximum Borrowing Capacity	$ 100
Debt Instrument, Basis Spread on Variable Rate	0.50%
Debt Instrument, Covenant, Ratio of Total Debt to EBITDAX	3
Debt Instrument, Covenant, Ratio of Consolidated Current Assets to Consolidated Current Liabilities	1
Long-Term Debt, Gross		$ 7		$ 5
Credit Agreement [Member] | Minimum [Member]
Debt Instrument, Applicable Margin on Basis Spread	0.25%
Debt Instrument, Covenant, Restricted Payment, Percentage of Existing Borrowing Base	20.00%
Credit Agreement [Member] | Maximum [Member]
Debt Instrument, Applicable Margin on Basis Spread	1.25%

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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X

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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X

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Topic 835
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X

- Definition

Indicates type of variable interest rate on debt instrument.

+ References

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-Topic 942
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-Section 50
-Paragraph 3
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X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
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X

- Definition

Represents the percentage of applicable margin on basis spread on a debt instrument.

+ References

No definition available.

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X

- Definition

The ratio of consolidated current assets to consolidated current liabilities required by the debt instrument.

+ References

No definition available.

+ Details

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X

- Definition

The ratio of total debt to EBITDAX required under the debt instrument.

+ References

No definition available.

+ Details

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X

- Definition

Percentage of existing borrowing base for restricted payment under covenant of the debt instrument.

+ References

No definition available.

+ Details

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- Details

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