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Equity Investments (Tables) | 12 Months Ended
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Dec. 31, 2019
Equity Method Investments and Joint Ventures [Abstract] |
Schedule of investments accounted for by the equity method | Summarized balance sheet information:
| December 31,
| 2019 |  | 2018
| (In thousands)
Current assets | $ | 421,326 |  |  | $ | 471,733 |
Noncurrent assets | $ | 1,260,075 |  |  | $ | 1,302,488 |
Current liabilities | $ | 132,569 |  |  | $ | 239,975 |
Noncurrent liabilities | $ | 163,241 |  |  | $ | 94,575 |
Summarized results of operations:
| December 31,
| 2019 |  | 2018 |  | 2017
| (In thousands)
Gross revenue | $ | 625,012 |  |  | $ | 1,729,778 |  |  | $ | 755,374 |
Net (loss) income | $ | (76,523 | ) |  | $ | 253,451 |  |  | $ | (37,102 | )
Investments accounted for by the equity method consist of the following as of December 31, 2019 and 2018:
|  |  | Carrying Value |  | Loss (income) from equity method investments
| Approximate Ownership % |  | December 31, |  | For the Year Ended December 31,
|  | 2019 |  | 2018 |  | 2019 |  | 2018 |  | 2017
|  |  | (In thousands)
Investment in Tatex Thailand II, LLC | 23.5 | % |  | $ | — |  |  | $ | — |  |  | $ | (2,086 | ) |  | $ | (241 | ) |  | $ | (549 | )
Investment in Tatex Thailand III, LLC(1) | — | % |  | — |  |  | — |  |  | — |  |  | — |  |  | (183 | )
Investment in Grizzly Oil Sands ULC | 24.9999 | % |  | 21,000 |  |  | 44,259 |  |  | 32,710 |  |  | 510 |  |  | 2,189 |
Investment in Timber Wolf Terminals LLC(2) | — | % |  | — |  |  | — |  |  | — |  |  | 536 |  |  | 8 |
Investment in Windsor Midstream LLC | 22.5 | % |  | 39 |  |  | 39 |  |  | — |  |  | (9 | ) |  | 25,233 |
Investment in Stingray Cementing LLC(3) | — | % |  | — |  |  | — |  |  | — |  |  | — |  |  | 205 |
Investment in Blackhawk Midstream LLC(4) | — | % |  | — |  |  | — |  |  | — |  |  | (38 | ) |  | — |
Investment in Stingray Energy Services LLC(3) | — | % |  | — |  |  | — |  |  | — |  |  | — |  |  | 282 |
Investment in Sturgeon Acquisitions LLC(3) | — | % |  | — |  |  | — |  |  | — |  |  |  |  |  | (71 | )
Investment in Mammoth Energy Services, Inc.(3) | 21.8 | % |  | 11,005 |  |  | 191,823 |  |  | 179,524 |  |  | (49,969 | ) |  | (11,288 | )
Investment in Strike Force Midstream LLC(5) | — | % |  | — |  |  | — |  |  | — |  |  | (693 | ) |  | 1,954 |
|  |  | $ | 32,044 |  |  | $ | 236,121 |  |  | $ | 210,148 |  |  | $ | (49,904 | ) |  | $ | 17,780 |
_____________________
(1) | In December 2017, the Company received its final distribution from Tatex Thailand III, LLC ("Tatex III"), which was dissolved in 2017.
(2) | On June 5, 2018, the Company received its final distribution from Timber Wolf Terminals LLC ("Timber Wolf"), which was dissolved in 2018.
(3) | On June 5, 2017, Mammoth Energy acquired Stingray Cementing LLC, Stingray Energy Services LLC and Sturgeon Acquisitions LLC. See below under Mammoth Energy Services, Inc. for information regarding these transactions.
(4) | On December 31, 2018, the Company received its final distribution from Blackhawk Midstream LLC ("Blackhawk"), which was dissolved in 2018.
(5) On May 1, 2018, the Company sold its 25% interest in Strike Force Midstream LLC ("Strike Force") to EQT Midstream Partners, LP for proceeds of $175.0 million in cash. As a result of the sale, the Company recognized a gain of $96.4 million net of transaction fees, which is included in gain on sale of equity method investments in the accompanying consolidated statement of operations.

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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