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Equity Investments (Tables) | 12 Months Ended
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Dec. 31, 2017
Equity Method Investments and Joint Ventures [Abstract] |
Investments Accounted for by the Equity Method | Summarized balance sheet information:
| December 31,
| 2017 |  | 2016
| (In thousands)
Current assets | $ | 415,032 |  |  | $ | 148,733 |
Noncurrent assets | $ | 1,542,090 |  |  | $ | 1,305,407 |
Current liabilities | $ | 261,086 |  |  | $ | 57,173 |
Noncurrent liabilities | $ | 148,839 |  |  | $ | 67,680 |
Investments accounted for by the equity method consist of the following as of December 31, 2017 and 2016:
|  |  | Carrying Value |  | Loss (income) from equity method investments
| Approximate Ownership % |  | December 31, |  | For the Year Ended December 31,
|  | 2017 |  | 2016 |  | 2017 |  | 2016 |  | 2015
|  |  | (In thousands)
Investment in Tatex Thailand II, LLC | 23.5 | % |  | $ | — |  |  | $ | — |  |  | $ | (549 | ) |  | $ | (412 | ) |  | $ | 189 |
Investment in Tatex Thailand III, LLC | 17.9 | % |  | — |  |  | — |  |  | (183 | ) |  | — |  |  | — |
Investment in Grizzly Oil Sands ULC | 24.9999 | % |  | 57,641 |  |  | 45,213 |  |  | 2,189 |  |  | 25,150 |  |  | 115,544 |
Investment in Timber Wolf Terminals LLC | 50.0 | % |  | 983 |  |  | 991 |  |  | 8 |  |  | 8 |  |  | 14 |
Investment in Windsor Midstream LLC | 22.5 | % |  | 30 |  |  | 25,749 |  |  | 25,233 |  |  | (13,618 | ) |  | (18,398 | )
Investment in Stingray Cementing LLC(1) | — | % |  | — |  |  | 1,920 |  |  | 205 |  |  | 263 |  |  | 147 |
Investment in Blackhawk Midstream LLC | 48.5 | % |  | — |  |  | — |  |  | — |  |  | — |  |  | (7,216 | )
Investment in Stingray Energy Services LLC(1) | — | % |  | — |  |  | 4,215 |  |  | 282 |  |  | 1,044 |  |  | 557 |
Investment in Sturgeon Acquisitions LLC(1) | — | % |  | — |  |  | 20,526 |  |  | (71 | ) |  | 993 |  |  | (1,229 | )
Investment in Mammoth Energy Services, Inc.(1) | 25.1 | % |  | 165,715 |  |  | 111,717 |  |  | (23,811 | ) |  | 20,646 |  |  | 16,485 |
Investment in Strike Force Midstream LLC | 25.0 | % |  | 77,743 |  |  | 33,589 |  |  | 1,954 |  |  | (89 | ) |  | — |
|  |  | $ | 302,112 |  |  | $ | 243,920 |  |  | $ | 5,257 |  |  | $ | 33,985 |  |  | $ | 106,093 |
(1) | On June 5, 2017, the Company contributed all of its membership interests in Stingray Cementing LLC, Stingray Energy Services LLC and Sturgeon Acquisitions LLC to Mammoth Energy Services, Inc. ("Mammoth Energy"). See below under Mammoth Energy Partners LP/Mammoth Energy Services, Inc. for information regarding these transactions.
Summarized results of operations:
| December 31,
| 2017 |  | 2016 |  | 2015
| (In thousands)
Gross revenue | $ | 755,374 |  |  | $ | 287,733 |  |  | $ | 430,729 |
Net (loss) income | $ | (37,102 | ) |  | $ | (65,070 | ) |  | $ | 16,761 |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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