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Note 9 - Segment Information and Major Customers - Segment Information by Major Customers (Details) - Customer Concentration Risk [Member] - Revenue Benchmark [Member]
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Oil Purchasers [Member] | DE IV Operating LLC. [Member]    
Percentage of total revenue 44.00% 14.00%
Oil Purchasers [Member] | Civita Resources Inc. [Member]    
Percentage of total revenue 20.00% 20.00%
Oil Purchasers [Member] | Apa Corporation [Member]    
Percentage of total revenue 12.00% 22.00%
Oil Purchasers [Member] | Plains All American Inc [Member]    
Percentage of total revenue 6.00% 19.00%
Natural Gas And Liquids [Member] | DE IV Operating LLC. [Member]    
Percentage of total revenue 30.00% 0.00%
Natural Gas And Liquids [Member] | Civita Resources Inc. [Member]    
Percentage of total revenue 22.00% 20.00%
Natural Gas And Liquids [Member] | Apa Corporation [Member]    
Percentage of total revenue 19.00% 17.00%