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RESTATEMENT OF CONSOLIDATING FINANCIAL STATEMENTS OF THE SUCCESSOR COMPANY (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |
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Jul. 07, 2016 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Jul. 09, 2014
RESTATEMENT OF CONSOLIDATING FINANCIAL STATEMENTS OF THE PREDECESSOR COMPANY |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss attributable to GS&T |  | $ 25,104 | $ 27,514 | $ 110,653 | $ 54,483 | $ 49,498 | $ 66,625 | $ 40,332 | $ 38,442 | $ 182,294 | $ 217,757 | $ 194,897 |
Net loss per share - basic and diluted | $ 30.20 |  |  |  |  |  |  |  |  | $ 3.02 |  |  |
Net loss attributable to noncontrolling interest |  |  |  |  |  |  | 7,178 | 11,620 | 40,673 | $ 31,064 |  | 59,471 |
Net loss |  | 25,104 | $ 27,514 | $ 110,653 | $ 54,483 | 49,498 | $ 73,803 | $ 51,952 | $ 79,115 | 213,358 | 217,757 | 254,368 |
GS&T shareholders' equity |  |  |  |  |  |  |  |  |  | 1,044,201 |  |  |
Noncontrolling interest |  |  |  |  |  |  |  |  |  | 248,573 |  |  |
Total equity |  | $ 1,029,699 |  |  |  | $ 1,105,966 |  |  |  | 1,292,774 | $ 1,029,699 | $ 1,105,966 | $ 1,512,069
Previously reported |  |  |  |  |  |  |  |  |  |  |  |  |
RESTATEMENT OF CONSOLIDATING FINANCIAL STATEMENTS OF THE PREDECESSOR COMPANY |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss attributable to GS&T |  |  |  |  |  |  |  |  |  | $ 204,117 |  |  |
Net loss per share - basic and diluted |  |  |  |  |  |  |  |  |  | $ 3.38 |  |  |
Net loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  |  | $ 9,241 |  |  |
GS&T shareholders' equity |  |  |  |  |  |  |  |  |  | 1,022,378 |  |  |
Noncontrolling interest |  |  |  |  |  |  |  |  |  | 270,396 |  |  |
Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |
RESTATEMENT OF CONSOLIDATING FINANCIAL STATEMENTS OF THE PREDECESSOR COMPANY |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss attributable to GS&T |  |  |  |  |  |  |  |  |  | (21,823) |  |  |
Net loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  |  | 21,823 |  |  |
GS&T shareholders' equity |  |  |  |  |  |  |  |  |  | 21,823 |  |  |
Noncontrolling interest |  |  |  |  |  |  |  |  |  | $ (21,823) |  |  |

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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References No definition available. + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 27 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 7 + Details
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