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Net Income (Loss) Per Share (Tables) | 3 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted |
| Three months ended March 31,
In thousands except per share amounts | 2018 |  | 2017
Net income (loss) available to common stockholders: |  |  |
Income (loss) from continuing operations | $ | 691 |  |  | $ | 18,299 |
Income (loss) from discontinued operations | 550 |  |  | 364 |
| $ | 1,241 |  |  | $ | 18,663 |
Weighted average shares: |  |  |
Basic | 184,367 |  |  | 178,898 |
Effect of stock-based compensation plans | 3,254 |  |  | 4,170 |
Diluted | 187,621 |  |  | 183,068 |
Basic income (loss) per share: |  |  |
Income (loss) from continuing operations | $ | 0.00 |  |  | $ | 0.10 |
Income (loss) from discontinued operations | 0.00 |  |  | 0.00 |
Basic(1) | $ | 0.01 |  |  | $ | 0.10 |
Diluted income (loss) per share: |  |  |
Income (loss) from continuing operations | $ | 0.00 |  |  | $ | 0.10 |
Income (loss) from discontinued operations | 0.00 |  |  | 0.00 |
Diluted(1) | $ | 0.01 |  |  | $ | 0.10 |

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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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