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Loss per share | 6 Months Ended
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Jun. 30, 2017
Earnings Per Share [Abstract] |
Loss per share | 2. Loss per share Basic loss per share is computed by dividing net loss by the weighted average number of common shares outstanding during the periods. Diluted loss per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock and is calculated using the treasury stock method for stock options and unvested shares. Common equivalent shares are excluded from the calculation in the loss periods as their effects would be anti-dilutive. The information related to basic and diluted loss per share for the three and six months ended June 30, 2017 and 2016 is as follows:
| Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(In thousands, except share data) | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | $ | (20,409 | ) |  | $ | (7,184 | ) |  | $ | (33,134 | ) |  | $ | (13,956 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding - Basic and diluted |  | 54,778,046 |  |  |  | 48,084,608 |  |  |  | 54,297,536 |  |  |  | 37,776,411 |
Loss per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic and diluted: | $ | (0.37 | ) |  | $ | (0.15 | ) |  | $ | (0.61 | ) |  | $ | (0.37 | )

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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