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NET INCOME (LOSS) PER SHARE | 6 Months Ended
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Jun. 30, 2017
Earnings Per Share [Abstract] |
NET INCOME (LOSS) PER SHARE | NET INCOME (LOSS) PER SHARE Basic net income (loss) per share is calculated by dividing the net income (loss) attributable to common shares by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per common share is calculated by dividing the net income (loss) attributable to common shares by the weighted average number of common shares outstanding plus dilutive potential common shares outstanding during the period. Potential common shares include the shares of common stock issuable upon the exercise of outstanding stock options and warrants, the vesting of RSUs and the purchase of shares from the ESPP (using the treasury stock method) as well as the conversion of the excess conversion value on the 2019 Notes and 2022 Notes. As discussed in Note 6, Debt, the Company has either the obligation or the option to pay cash for the aggregate principal amount due upon the conversion of its convertible senior notes. Since it is the Company’s intent to settle the principal amount of its convertible senior notes in cash, the potentially dilutive effect of such notes on net income (loss) per share is computed under the treasury stock method. Potential common shares are excluded from the diluted net loss per share computation to the extent they would be antidilutive. Because the Company reported a net loss for the three and six months ended June 30, 2017 and 2016, no potentially dilutive securities have been included in the computation of diluted net loss per share for those periods. The following table sets forth the computation of basic and diluted net income (loss) per share for the three and six months ended June 30, 2017 and 2016 (in thousands, except per share amounts):
| Three Months Ended June 30, |  | Six Months Ended June 30,
2017 |  | 2016 |  | 2017 |  | 2016
Numerator: |  |  |  |  |  |  |
Net loss | $ | (19,743 | ) |  | $ | (7,958 | ) |  | $ | (39,609 | ) |  | $ | (11,812 | )
Denominator: |  |  |  |  |  |  |
Weighted average common shares outstanding | 40,160 |  |  | 37,181 |  |  | 39,079 |  |  | 37,101 |
Net loss per share: |  |  |  |  |  |  |
Basic and diluted net loss per common share | $ | (0.49 | ) |  | $ | (0.21 | ) |  | $ | (1.01 | ) |  | $ | (0.32 | )
The following outstanding stock options, RSUs, conversion premiums on the Company’s convertible senior notes, warrants and ESPP purchase options are antidilutive in the periods presented (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Weighted average number of stock options | 5,092 |  |  | 4,254 |  |  | 5,102 |  |  | 4,288 |
Weighted average number of RSUs | 375 |  |  | 218 |  |  | 364 |  |  | 212 |
Conversion premium on the 2019 Notes | 9 |  |  | 2,364 |  |  | 817 |  |  | 2,557 |
Weighted average number of warrants | — |  |  | — |  |  | — |  |  | 1 |
Weighted average ESPP purchase options | 36 |  |  | — |  |  | 37 |  |  | 12 |
Total | 5,512 |  |  | 6,836 |  |  | 6,320 |  |  | 7,070 |

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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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