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EQUITY INVESTMENTS (Tables) | 6 Months Ended
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Jun. 30, 2024
All Dale Minerals III |
Investments |
Schedule of changes in equity method investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended | ​
​ | ​ | June 30, | ​ | June 30, | ​
​ |  | 2024 |  | 2023 |  | 2024 |  | 2023 | ​
​ | ​ | (in thousands) | ​
Beginning balance | ​ | $ | 23,558 | ​ | $ | 24,695 | ​ | $ | 23,933 | ​ | $ | 25,284 | ​
Equity method investment income | ​ | ​ | 778 | ​ | ​ | 716 | ​ | ​ | 1,285 | ​ | ​ | 1,141 | ​
Distributions received | ​ | ​ | (1,118) | ​ | ​ | (960) | ​ | ​ | (2,000) | ​ | ​ | (1,974) | ​
Ending balance | ​ | $ | 23,218 | ​ | $ | 24,451 | ​ | $ | 23,218 | ​ | $ | 24,451 | ​
Francis Renewable Energy |
Investments |
Schedule of changes in equity method investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended | ​
​ | ​ | June 30, | ​ | June 30, | ​
​ |  | 2024 |  | 2023 |  | 2024 |  | 2023 |
​ | ​ | (in thousands) | ​
Beginning balance | ​ | $ | 15,390 | ​ | $ | 20,000 | ​ | $ | 16,487 | ​ | $ | 20,000 | ​
Equity method investment loss | ​ | ​ | (872) | ​ | ​ | (2,620) | ​ | ​ | (1,969) | ​ | ​ | (2,620) | ​
Ending balance | ​ | $ | 14,518 | ​ | $ | 17,380 | ​ | $ | 14,518 | ​ | $ | 17,380 | ​
NGP ET IV |
Investments |
Schedule of changes in equity method investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended | ​
​ | ​ | June 30, | ​ | June 30, | ​
​ |  | 2024 |  | 2023 |  | 2024 |  | 2023 | ​
​ | ​ | (in thousands) | ​
Beginning balance | ​ | $ | 6,745 | ​ | $ | 4,254 | ​ | $ | 6,083 | ​ | $ | 4,087 | ​
Contributions | ​ | ​ | 665 | ​ | ​ | 794 | ​ | ​ | 1,290 | ​ | ​ | 1,334 | ​
Equity method investment income (loss) | ​ | ​ | (58) | ​ | ​ | (90) | ​ | ​ | (21) | ​ | ​ | (463) | ​
Ending balance | ​ | $ | 7,352 | ​ | $ | 4,958 | ​ | $ | 7,352 | ​ | $ | 4,958 | ​

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