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Earnings per Share (Tables) | 6 Months Ended
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Jun. 30, 2016
Earnings Per Share [Abstract] |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] | The following table details the weighted-average anti-dilutive securities related to RSUs and PSUs for the periods presented:
| For the Three Months Ended June 30, |  | For the Six Months Ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
| (in thousands)
Anti-dilutive | 155 |  |  | 590 |  |  | 70 |  |  | 490 |
Schedule of calculation of basic and diluted earnings per share | The following table sets forth the calculations of basic and diluted earnings per share:
| For the Three Months Ended June 30, |  | For the Six Months Ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
| (in thousands, except per share amounts)
Net loss | $ | (168,681 | ) |  | $ | (57,508 | ) |  | $ | (515,891 | ) |  | $ | (110,566 | )
Basic weighted-average common shares outstanding | 68,102 |  |  | 67,483 |  |  | 68,090 |  |  | 67,473 |
Add: dilutive effect of unvested RSUs and contingent PSUs | — |  |  | — |  |  | — |  |  | — |
Diluted weighted-average common shares outstanding | 68,102 |  |  | 67,483 |  |  | 68,090 |  |  | 67,473 |
Basic net loss per common share | $ | (2.48 | ) |  | $ | (0.85 | ) |  | $ | (7.58 | ) |  | $ | (1.64 | )
Diluted net loss per common share | $ | (2.48 | ) |  | $ | (0.85 | ) |  | $ | (7.58 | ) |  | $ | (1.64 | )

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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