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Equity Investments | 12 Months Ended
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Dec. 31, 2017
Equity Method Investments and Joint Ventures [Abstract] |
Equity Investments | EQUITY INVESTMENTS 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.
The tables below summarize financial information for the Company's equity investments, as of December 31, 2017 and 2016. 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 |
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 |
Tatex Thailand II, LLC The Company has an indirect ownership interest in Tatex Thailand II, LLC (“Tatex”). Tatex holds an 8.5% interest in APICO, LLC (“APICO”), an international oil and gas exploration company. APICO has a reserve base located in Southeast Asia through its ownership of concessions covering approximately 180,000 acres which includes the Phu Horm Field. The Company received $0.5 million and $0.4 million in distributions from Tatex II during the years ended December 31, 2017 and 2016, respectively. Tatex Thailand III, LLC The Company has an ownership interest in Tatex Thailand III, LLC ("Tatex III"). Tatex III previously owned a concession covering approximately 245,000 acres in Southeast Asia. As of December 31, 2014, the Company reviewed its investment in Tatex III and, together with Tatex III, made the decision to allow the concession to expire in January 2015. As such, the Company fully impaired the asset as of December 31, 2014. In December 2017, Tatex III was dissolved and the Company received a final distribution of $0.2 million. Grizzly Oil Sands ULC The Company, through its wholly owned subsidiary Grizzly Holdings Inc. ("Grizzly Holdings"), owns an interest in Grizzly Oil Sands ULC ("Grizzly"), a Canadian unlimited liability company. The remaining interest in Grizzly is owned by Grizzly Oil Sands Inc. ("Oil Sands"). As of December 31, 2017, Grizzly had approximately 830,000 acres under lease in the Athabasca, Peace River and Cold Lake oil sands regions of Alberta, Canada. Grizzly has high-graded three oil sands projects to various stages of development. Grizzly commenced commercial production from its Algar Lake Phase I steam-assisted gravity drainage ("SAGD") oil sand project during the second quarter of 2014 and has regulatory approval for up to 11,300 barrels per day of bitumen production. Algar Lake production peaked at 2,200 barrels per day during the ramp-up phase of the SAGD facility, however, in April 2015, Grizzly made the decision to suspend operations at its Algar Lake facility due to the commodity price drop and its effect on project economics. Grizzly continues to monitor market conditions as it assesses start up plans for the facility. The Company reviewed its investment in Grizzly as of September 30, 2015 and December 31, 2015, and again at March 31, 2016, for impairment based on FASB ASC 323 due to certain qualitative factors and as such, engaged an independent third party to assist management in determining fair value calculations of its investment. As a result of the calculated fair values and other qualitative factors, the Company concluded that an other than temporary impairment was required under FASB ASC 323, resulting in an aggregate impairment loss of $101.6 million for the year ended December 31, 2015 and $23.1 million for the year ended December 31, 2016, which is included in loss from equity method investments, net in the accompanying consolidated statements of operations. As of and during the period ended December 31, 2017, commodity prices had increased as compared to the quarter ended March 31, 2016, and there were no impairment indicators that required further evaluation for impairment. If commodity prices decline in the future however, further impairment of the investment in Grizzly may be necessary. During the years ended December 31, 2017 and 2016, Gulfport paid $2.3 million and $15.5 million, respectively, in cash calls. Grizzly’s functional currency is the Canadian dollar. The Company's investment in Grizzly was increased by $12.3 million and $4.2 million as a result of a foreign currency translation gain and decreased by $28.5 million as a result of a foreign currency translation loss for the years ended December 31, 2017, 2016, and 2015, respectively. Effective October 5, 2012, Grizzly entered into a $125.0 million revolving credit facility, of which Grizzly paid the outstanding balance in full in July 2016. Gulfport paid its share of this amount on June 30, 2016. Timber Wolf Terminals LLC During 2012, the Company invested in Timber Wolf Terminals LLC (“Timber Wolf”). Timber Wolf was formed to operate a crude/condensate terminal and a sand transloading facility in Ohio. During the years ended December 31, 2017 and 2016, the Company paid no cash calls to Timber Wolf. Windsor Midstream LLC At December 31, 2017, the Company held a 22.5% interest in Windsor Midstream LLC (“Midstream”), an entity controlled and managed by an unrelated third party. Midstream previously owned a 28.4% interest in Coronado Midstream LLC ("Coronado"), a gas processing plant in West Texas. In March 2015, Coronado was sold to Enlink Midstream Partners, LP ("Enlink"). As a result of the sale of Coronado to EnLink, Midstream received common units of EnLink, which were subsequently sold by Midstream. During the year ended December 31, 2017, the Company was informed that Midstream had not recorded certain activity and fair value treatment of Midstream's investment in EnLink common units in a timely manner. The corresponding effect of this treatment was immaterial to the Company's previously issued financial statements and the recording of the correction in the current periods' financial statements was not material to the Company's estimated net income for the current full fiscal year. For the year ended December 31, 2017, approximately $23.4 million of the loss from equity method investments, net was related to the out-of-period activity associated with the accounting for Midstream's investment in EnLink common units. The Company received $0.5 million and $15.8 million in distributions from Midstream during the years ended December 31, 2017 and 2016, respectively. Stingray Cementing LLC During 2012, the Company invested in Stingray Cementing LLC ("Stingray Cementing"). Stingray Cementing provides well cementing services. The loss (income) from equity method investments presented in the table above reflects any intercompany profit eliminations. On June 5, 2017, the Company contributed all of its membership interests in Stingray Cementing to Mammoth Energy. See below under Mammoth Energy Partners LP/Mammoth Energy Services, Inc. for information regarding this transaction. Blackhawk Midstream LLC During 2012, the Company invested in Blackhawk Midstream LLC ("Blackhawk"). Blackhawk coordinated gathering, compression, processing and marketing activities for the Company in connection with the development of its Utica Shale acreage. During the year ended December 31, 2015, the Company received net proceeds of approximately $7.2 million from the release of escrow from the Blackhawk sale, which is included in loss from equity investments, net in the accompanying consolidated statements of operations. Blackhawk does not have any current activities. Stingray Energy Services LLC During 2013, the Company invested in Stingray Energy Services LLC ("Stingray Energy"). Stingray Energy provides rental tools for land-based oil and natural gas drilling, completion and workover activities as well as the transfer of fresh water to wellsites. The loss (income) from equity method investments presented in the table above reflects any intercompany profit eliminations. On June 5, 2017, the Company contributed all of its membership interests in Stingray Energy to Mammoth Energy. See below under Mammoth Energy Partners LP/Mammoth Energy Services, Inc. for information regarding this transaction. Sturgeon Acquisitions LLC During 2014, the Company invested $20.7 million and received an ownership interest of 25% in Sturgeon Acquisitions LLC ("Sturgeon"). Sturgeon owns and operates sand mines that produce hydraulic fracturing grade sand. During the year ended December 31, 2016, the Company received approximately $1.3 million in distributions from Sturgeon. On June 5, 2017, the Company contributed all of its membership interests in Sturgeon to Mammoth Energy. See below under Mammoth Energy Partners LP/Mammoth Energy Services, Inc. for information regarding this transaction. Mammoth Energy Partners LP/Mammoth Energy Services, Inc. In the fourth quarter of 2014, the Company contributed its investments in four entities to Mammoth Energy Partners LP ("Mammoth") for a 30.5% interest in this entity. Mammoth originally intended to pursue its initial public offering in 2014 or 2015; however, due to low commodity prices, the offering was postponed. In October 2016, Mammoth converted from a limited partnership into a limited liability company named Mammoth Energy Partners LLC ("Mammoth LLC") and the Company and the other members of Mammoth LLC contributed their interests in Mammoth LLC to Mammoth Energy. The Company received 9,150,000 shares of Mammoth Energy common stock in return for its contribution. Following the contribution, Mammoth Energy completed its initial public offering (the "IPO") of 7,750,000 shares of its common stock at a public offering price of $15.00 per share, of which 7,500,000 shares were sold by Mammoth Energy and 250,000 shares were sold by certain selling stockholders, including 76,250 shares sold by the Company for which it received net proceeds of $1.1 million. At December 31, 2016, the Company owned an approximate 24.2% interest in Mammoth Energy. To reflect the dilution of the Company's shares of Mammoth Energy stock after the IPO, the Company recognized a gain of $3.4 million, which is included in loss from equity method investments, net in the accompanying consolidated statements of operations. On June 5, 2017, the Company contributed all of its membership interests in Sturgeon (which owns Taylor Frac, LLC, Taylor Real Estate Investments, LLC and South River Road, LLC), Stingray Energy and Stingray Cementing to Mammoth Energy in exchange for approximately 2.0 million shares of Mammoth Energy common stock. As of December 31, 2017, the Company held approximately 25.1% of Mammoth Energy’s outstanding common stock. The Company accounted for the transactions as a sale of financial assets under FASB ASC 860. The Company valued the shares of Mammoth Energy common stock it received in the transactions at $18.50 per share, which was the closing price of Mammoth Energy common stock on June 5, 2017. The Company recognized a gain of $12.5 million from the transactions, which is included in loss from equity method investments, net in the accompanying consolidated statements of operations. The Company's investment in Mammoth Energy was increased by a $0.2 million foreign currency gain and decreased by a $0.8 million foreign currency loss resulting from Mammoth Energy's foreign subsidiary for the years ended December 31, 2017 and 2016. The loss (income) from equity method investments presented in the table above reflects any intercompany profit eliminations. Strike Force Midstream LLC In February 2016, the Company, through its wholly owned subsidiary Gulfport Midstream Holdings, LLC ("Midstream Holdings"), entered into an agreement with Rice Midstream Holdings LLC ("Rice"), a subsidiary of Rice Energy Inc., to develop natural gas gathering assets in eastern Belmont County and Monroe County, Ohio through an entity called Strike Force Midstream LLC ("Strike Force"). In 2017, Rice was acquired by EQT Corporation ("EQT"). The Company owns a 25% interest in Strike Force and EQT acts as operator and owns the remaining 75% interest in Strike Force. Construction of the gathering assets, which is ongoing, provides gathering services for wells operated by Gulfport and other operators and connectivity of existing dry gas gathering systems. During the years ended December 31, 2017 and 2016, Gulfport paid $53.0 million and $11.0 million, respectively, in cash calls to Strike Force. For the year ended December 31, 2017, Gulfport received distributions of $6.9 million from Strike Force. The Company accounted for its initial contribution to Strike Force at fair value under applicable codification guidance. The Company estimated the fair market value of its investment in Strike Force as of the contribution date using the discounted cash flow method under the income approach, based on an independently prepared valuation of the contributed assets. The fair market value was reduced by a discount factor for the lack of marketability due to the Company's minority interest, resulting in a fair value of $22.5 million for the Company's 25% interest. The fair value of the assets contributed was estimated using assumptions that represent Level 3 inputs. See Note 13 - Fair Value Measurements for additional discussion of the measurement inputs. The Company has elected to report its proportionate share of Strike Force's earnings on a one-quarter lag as permitted under FASB ASC 323. The loss (income) from equity method investments presented in the table above reflects any intercompany profit eliminations.

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- Definition The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -URI http://asc.fasb.org/topic&trid=2196965 + Details
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