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Equity Investments (Tables) | 6 Months Ended
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Jun. 30, 2016
Equity Method Investments and Joint Ventures [Abstract] |
Investments Accounted For By The Equity Method | Investments accounted for by the equity method consist of the following as of June 30, 2016 and December 31, 2015:
|  |  | Carrying value |  | Loss (income) from equity method investments
| Approximate ownership % |  | June 30, 2016 |  | December 31, 2015 |  | Three months ended June 30, |  | Six months ended June 30,
|  |  |  | 2016 |  | 2015 |  | 2016 |  | 2015
|  |  | (In thousands)
Investment in Tatex Thailand II, LLC | 23.5 | % |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (159 | ) |  | $ | — |
Investment in Tatex Thailand III, LLC | 17.9 | % |  | — |  |  | — |  |  | — |  |  | 189 |  |  | — |  |  | 189 |
Investment in Grizzly Oil Sands ULC | 24.9999 | % |  | 49,556 |  |  | 50,645 |  |  | 763 |  |  | 8,494 |  |  | 24,448 |  |  | 12,636 |
Investment in Timber Wolf Terminals LLC | 50.0 | % |  | 996 |  |  | 999 |  |  | 1 |  |  | 7 |  |  | 4 |  |  | 13 |
Investment in Windsor Midstream LLC | 22.5 | % |  | 26,147 |  |  | 27,955 |  |  | (2,881 | ) |  | 881 |  |  | (3,048 | ) |  | (17,906 | )
Investment in Stingray Cementing LLC | 50.0 | % |  | 2,359 |  |  | 2,487 |  |  | 78 |  |  | 105 |  |  | 108 |  |  | 172 |
Investment in Blackhawk Midstream LLC | 48.5 | % |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (7,217 | )
Investment in Stingray Energy Services LLC | 50.0 | % |  | 4,981 |  |  | 5,908 |  |  | 139 |  |  | 311 |  |  | 641 |  |  | 321 |
Investment in Sturgeon Acquisitions LLC | 25.0 | % |  | 22,258 |  |  | 22,769 |  |  | 134 |  |  | (491 | ) |  | 511 |  |  | (1,059 | )
Investment in Mammoth Energy Partners LP | 30.5 | % |  | 121,309 |  |  | 131,630 |  |  | 2,543 |  |  | 5,624 |  |  | 9,009 |  |  | 7,996 |
Investment in Strike Force Midstream LLC | 25.0 | % |  | 25,441 |  |  | — |  |  | 59 |  |  | — |  |  | 59 |  |  | — |
|  |  | $ | 253,047 |  |  | $ | 242,393 |  |  | $ | 836 |  |  | $ | 15,120 |  |  | $ | 31,573 |  |  | $ | (4,855 | )
Equity Method Investment Balance Sheet Summary | The tables below summarize financial information for the Company's equity investments as of June 30, 2016 and December 31, 2015. Summarized balance sheet information:
| June 30, 2016 |  | December 31, 2015
| (In thousands)
Current assets | $ | 105,614 |  |  | $ | 105,537 |
Noncurrent assets | $ | 1,330,877 |  |  | $ | 1,293,925 |
Current liabilities | $ | 41,238 |  |  | $ | 56,559 |
Noncurrent liabilities | $ | 146,642 |  |  | $ | 155,995 |
Equity Method Investment Income Statement Summary | Summarized results of operations:
| Three months ended June 30, |  | Six months ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
| (In thousands)
Gross revenue | $ | 86,732 |  |  | $ | 130,134 |  |  | $ | 130,039 |  |  | $ | 263,690 |
Net (loss) income | $ | (560 | ) |  | $ | (45,246 | ) |  | $ | (25,868 | ) |  | $ | 45,422 |

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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=6382943&loc=d3e33918-111571 + Details
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