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Equity Method Investment (Tables) | 9 Months Ended
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Sep. 30, 2020
Equity Method Investments and Joint Ventures [Abstract] |
Marketable Securities | Summarized financial information for NMRD is as follows:
| Results of Operations
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
| (In thousands)
Operating revenues | $ | 3,462 |  |  | $ | 892 |  |  | $ | 7,769 |  |  | $ | 2,720 |
Operating expenses | 2,100 |  |  | 730 |  |  | 5,152 |  |  | 2,181 |
Net earnings | $ | 1,362 |  |  | $ | 162 |  |  | $ | 2,617 |  |  | $ | 539 |
| Financial Position
| September 30, |  | December 31,
| 2020 |  | 2019
| (In thousands)
Current assets | $ | 6,527 |  |  | $ | 7,187 |
Net property, plant, and equipment | 173,952 |  |  | 132,772 |
Non-current assets | 1,969 |  |  | — |
Total assets | 182,448 |  |  | 139,959 |
Current liabilities | 1,059 |  |  | 9,640 |
Non-current liabilities | 351 |  |  | — |
Owners’ equity | $ | 181,038 |  |  | $ | 130,319 |

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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