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Consolidated Income Statements - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Operating revenues:      
Operating revenues $ 170,800 $ 93,423 $ 46,928
Costs and expenses      
Production taxes 6,582 3,667 1,813
Operating expenses 6,307 3,929 3,880
Depreciation, depletion and amortization 19,083 10,464 11,909
General and administrative expenses 8,221 5,189 7,459
Total costs and expenses 40,193 23,249 25,061
Net income 130,607 70,174 21,867
Allocation of net income:      
General Partner 4,486 2,348 705
Unitholders $ 126,121 $ 67,826 $ 21,162
Net income per common unit (basic and diluted) (in dollars per share) $ 3.35 $ 1.94 $ 0.61
Weighted average basic and diluted common units outstanding (in shares) 37,624 35,052 34,680
Royalties [Member]      
Operating revenues:      
Operating revenues $ 133,262 $ 73,985 $ 37,043
Net Profits Interest [Member]      
Operating revenues:      
Operating revenues 28,207 17,596 8,714
Lease Bonus and Other [Member]      
Operating revenues:      
Operating revenues 8,661 829 291
Product and Service, Other [Member]      
Operating revenues:      
Operating revenues $ 670 $ 1,013 $ 880