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Consolidated Income Statements - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating revenues:      
Operating revenues $ 163,799 $ 170,800 $ 93,423
Costs and expenses:      
Production taxes 5,776 6,582 3,667
Operating expenses 6,435 6,307 3,929
Depreciation, depletion and amortization 26,307 19,083 10,464
General and administrative expenses 11,164 8,221 5,189
Total costs and expenses 49,682 40,193 23,249
Net income 114,117 130,607 70,174
Allocation of net income:      
General Partner 3,728 4,486 2,348
Unitholders $ 110,389 $ 126,121 $ 67,826
Net income per common unit (basic and diluted) (in dollars per share) $ 2.85 $ 3.35 $ 1.94
Weighted average basic and diluted common units outstanding (in shares) 38,783 37,624 35,052
Royalties [Member]      
Operating revenues:      
Operating revenues $ 114,531 $ 133,262 $ 73,985
Net Profit Interests [Member]      
Operating revenues:      
Operating revenues 34,338 28,207 17,596
Lease Bonus and Other [Member]      
Operating revenues:      
Operating revenues 12,668 8,661 829
Product and Service, Other [Member]      
Operating revenues:      
Operating revenues $ 2,262 $ 670 $ 1,013