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Note 6 - Debt (Details Textual)
$ in Millions
Jan. 05, 2022
USD ($)
Mar. 31, 2024
USD ($)
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   $ 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%