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Condensed Consolidated Income Statements (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Operating revenues    
Operating revenues $ 43,164 $ 30,979
Costs and expenses    
Operating, including production taxes 4,447 2,623
Depreciation, depletion and amortization 16,759 6,920
General and administrative 4,316 3,269
Total costs and expenses 25,522 12,812
Net income 17,642 18,167
Allocation of net income    
General Partner 632 605
Unitholders $ 17,010 $ 17,562
Net income per common unit (basic and diluted) (in dollars per share) $ 0.36 $ 0.44
Weighted average basic and diluted common units outstanding (in shares) 47,340 39,605
Royalties [Member]    
Operating revenues    
Operating revenues $ 37,830 $ 24,877
Net Profit Interests [Member]    
Operating revenues    
Operating revenues 4,793 5,598
Lease Bonus and Other [Member]    
Operating revenues    
Operating revenues $ 541 $ 504