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NET INCOME (LOSS) PER SHARE | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
NET INCOME (LOSS) PER SHARE | NET INCOME (LOSS) PER SHAREBasic net income (loss) per share is computed by dividing the net income (loss) by the weighted-average number of shares of common stock outstanding during the period. Diluted net income per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding adjusted for the dilutive effect of all potential shares of common stock. In periods when the Company reported a net loss, diluted net loss per share is the same as basic net loss per share because the effects of potentially dilutive items were anti-dilutive. The following table presents the calculation of basic and diluted net income (loss) per share (in thousands, except per share data):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
2021 |  | 2020 |  | 2021 |  | 2020
Numerator: |  |  |  |  |  |  |
Net income (loss) | $ | (2,876) |  |  | $ | 36,515 |  |  | $ | 239,810 |  |  | $ | (80,854) |
Net income (loss) attributable to noncontrolling interests | (2,960) |  |  | — |  |  | (3,303) |  |  | — |
Net income (loss) attributable to common stockholders | $ | 84 |  |  | $ | 36,515 |  |  | $ | 243,113 |  |  | $ | (80,854) |
Denominator: |  |  |  |  |  |  |
Basic shares: |  |  |  |  |  |  |
Weighted-average common shares outstanding | 460,948 |  |  | 445,074 |  | 457,414 |  |  | 440,540
Weighted-average unvested shares | (294) |  |  | (616) |  |  | (375) |  |  | (685) |
Weighted-average shares used to compute basic net income per share: | 460,654 |  |  | 444,458 |  |  | 457,039 |  |  | 439,855 |
Diluted shares: |  |  |  |  |  |  |
Stock options, restricted stock, and employee stock purchase plan | 17,180 |  |  | 26,166 |  |  | 18,991 |  |  | — |
Convertible senior notes | — |  |  | — |  |  | 18,727 |  |  | — |
Common stock warrants | 26,286 |  |  | 17,445 |  |  | 25,447 |  |  | — |
Weighted-average shares used to compute diluted net income per share: | 504,120 |  |  | 488,069 |  |  | 520,204 |  |  | 439,855 |
Net income (loss) per share attributable to common stockholders: |  |  |  |  |  |  |
Basic | $ | 0.00 |  |  | $ | 0.08 |  |  | $ | 0.53 |  |  | $ | (0.18) |
Diluted | $ | 0.00 |  |  | $ | 0.07 |  |  | $ | 0.48 |  |  | $ | (0.18) |
The following potential common shares were excluded from the calculation of diluted net income (loss) per share because their effect would have been anti-dilutive for the periods presented (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Stock options, restricted stock, and employee stock purchase plan | 7,652 |  |  | 10,309 |  |  | 7,161 |  |  | 37,445 |
Common stock warrants | 16,075 |  |  | 21,071 |  |  | 16,914 |  |  | 36,556 |
Convertible senior notes | 20,884 |  |  | 26,738 |  |  | 3,845 |  |  | 25,532 |
Total anti-dilutive securities | 44,611 |  |  | 58,118 |  |  | 27,920 |  |  | 99,533 |

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