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2. NET LOSS PER SHARE | 6 Months Ended
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Jun. 30, 2022
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 |  |  | Six Months Ended
|  |  | June 30, |  |  | June 30,
|  |  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss available for common shareholders - basic and diluted |  | $ | (13,597) |  | $ | (14,962) |  | $ | (26,765) |  | $ | (21,193)
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average common shares outstanding - basic and diluted |  |  | 165,238 |  |  | 158,818 |  |  | 164,902 |  |  | 157,136
Net loss per share - basic and diluted |  | $ | (0.08) |  | $ | (0.09) |  | $ | (0.16) |  | $ | (0.13)
For the three and six months ended June 30, 2022 and 2021, 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 1,153,000 and 1,764,000 shares of common stock, respectively, and 9,788,000 and 2,925,000 nonvested restricted and performance stock units, respectively.

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