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EARNINGS (LOSS) PER SHARE | 9 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
EARNINGS (LOSS) PER SHARE | EARNINGS (LOSS) PER SHAREBasic earnings (loss) per share is computed by dividing net income (loss) by the weighted average number of shares outstanding during the period. For periods in which the Company reports net income, diluted net earnings per share is determined by using the weighted average number of common and dilutive common equivalent shares outstanding during the period unless the effect is antidilutive. The calculations of shares used to compute earnings (loss) per share were as follows (in thousands):
| Three months ended |  | Nine months ended
| September 30, 2020 |  | September 30, 2019 |  | September 30, 2020 |  | September 30, 2019
Weighted average shares outstanding—basic | 144,948 |  |  | 110,080 |  |  | 136,837 |  |  | 109,523 |
Potential dilutive common shares | 6,732 |  |  | 676 |  |  | — |  |  | 577 |
Weighted average shares outstanding—diluted | 151,680 |  |  | 110,756 |  |  | 136,837 |  |  | 110,100 |
Options to purchase the Company's common stock aggregating 0.2 million shares have not been included in the computation of diluted earnings per share for the three months ended September 30, 2020 because their effect would have been antidilutive. Options to purchase the Company's common stock and unvested shares of restricted and performance-based stock and stock units aggregating 13.5 million shares have not been included in the computation of diluted loss per share for the nine months ended September 30, 2020 because their effect would have been antidilutive. Options to purchase the Company's common stock aggregating 0.3 million shares have not been included in the computation of diluted earnings per share for both the three and nine months ended September 30, 2019 because their effect would have been antidilutive.

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