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2. NET LOSS PER SHARE | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
2. NET LOSS PER SHARE | 2. NET LOSS PER SHARE Net loss per share Basic net loss per share is calculated using the weighted-average number of common shares outstanding during the period. Net loss per share, assuming dilution, is calculated using the weighted-average number of common shares outstanding and the dilutive effect of all potentially dilutive securities, including common stock equivalents and convertible securities. Net loss per share, assuming dilution, is equal to basic net loss per share because the effect of dilutive securities outstanding during the period, including options and warrants computed using the treasury stock method, is anti-dilutive. The components of basic and diluted net loss per share were as follows (in thousands, except loss per share data): Components of Basic and Diluted Net Loss Per Share
|  |  | Three Months Ended |  |  | Nine Months Ended
|  |  | September 30, |  |  | September 30,
|  |  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss available for common shareholders - basic and diluted |  | $ | (9,382) |  | $ | (2,826) |  | $ | (30,575) |  | $ | (10,064)
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average common shares outstanding - basic and diluted |  |  | 163,985 |  |  | 143,685 |  |  | 159,452 |  |  | 137,027
Net loss per share - basic and diluted |  | $ | (0.06) |  | $ | (0.02) |  | $ | (0.19) |  | $ | (0.07)
For the three and nine months ended September 30, 2021 and 2020, we excluded the following securities from net loss per share as the effect of including them would have been anti-dilutive: outstanding options exercisable into a total of 1,712,000 and 3,906,000 shares of common stock, respectively, and 2,553,000 and 2,001,000 nonvested restricted and performance stock units, respectively.

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