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Restatement of Previously Reported Consolidated Financial Statements - Restated Condensed Statements of Equity (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Statement of Stockholders' Equity [Abstract] |  |  |  |
Beginning balance |  |  | $ 787,259 | $ 1,865,806
Comprehensive loss | $ (4,405) | $ (9,884) | (15,322) | 18,326
Ending balance | 756,092 | 1,822,664 | 756,092 | 1,822,664
Accumulated Other Comprehensive Income (Loss) |  |  |  |
Statement of Stockholders' Equity [Abstract] |  |  |  |
Beginning balance |  |  | (1,570) | 25,834
Comprehensive loss |  |  | (2,011) | (5,333)
Ending balance | (3,581) | 20,501 | (3,581) | 20,501
Accumulated Deficit |  |  |  |
Statement of Stockholders' Equity [Abstract] |  |  |  |
Beginning balance |  |  | (2,137,738) | (1,963,605)
Comprehensive loss |  |  | (6,296) | 6,851
Ending balance | $ (2,163,797) | (1,977,497) | $ (2,163,797) | (1,977,497)
As Previously Reported |  |  |  |
Statement of Stockholders' Equity [Abstract] |  |  |  |
Beginning balance |  |  |  | 1,953,045
Comprehensive loss |  | 13,237 |  | 39,945
Ending balance |  | 1,931,522 |  | 1,931,522
As Previously Reported | Accumulated Other Comprehensive Income (Loss) |  |  |  |
Statement of Stockholders' Equity [Abstract] |  |  |  |
Beginning balance |  |  |  | 15,865
Comprehensive loss |  |  |  | (7,616)
Ending balance |  | 8,249 |  | 8,249
As Previously Reported | Accumulated Deficit |  |  |  |
Statement of Stockholders' Equity [Abstract] |  |  |  |
Beginning balance |  |  |  | (1,866,397)
Comprehensive loss |  |  |  | 30,753
Ending balance |  | (1,856,387) |  | (1,856,387)
Restatement Adjustments |  |  |  |
Statement of Stockholders' Equity [Abstract] |  |  |  |
Beginning balance |  |  |  | (87,239)
Comprehensive loss |  | (23,121) |  | (21,619)
Ending balance |  | (108,858) |  | (108,858)
Restatement Adjustments | Accumulated Other Comprehensive Income (Loss) |  |  |  |
Statement of Stockholders' Equity [Abstract] |  |  |  |
Beginning balance |  |  |  | 9,969
Comprehensive loss |  |  |  | 2,283
Ending balance |  | 12,252 |  | 12,252
Restatement Adjustments | Accumulated Deficit |  |  |  |
Statement of Stockholders' Equity [Abstract] |  |  |  |
Beginning balance |  |  |  | (97,208)
Comprehensive loss |  |  |  | (23,902)
Ending balance |  | $ (121,110) |  | $ (121,110)

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569616-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4591552-111686 + Details
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