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Net Loss Per Share Attributable to Common Stockholders | 12 Months Ended
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Dec. 31, 2019
Net Loss Per Share Attributable to Common Stockholders |
Net Loss Per Share Attributable to Common Stockholders | 13. Net Loss Per Share Attributable to Common Stockholders Potentially dilutive securities are excluded from the calculation of diluted net loss per share attributable to common stockholders if their inclusion is anti-dilutive. The following table shows the weighted-average outstanding securities considered anti-dilutive and therefore excluded from the computation of diluted net loss per share attributable to common stockholders (in thousands):
|  | Year Ended December 31,
|  | 2019 |  | 2018
Convertible preferred stock |  | 6,256 |  | 5,048
Common stock options and RSUs |  | 924 |  | 1,639
Warrants for common stock |  | 9 |  | 21
Total |  | 7,189 |  | 6,708
The following is a reconciliation of the numerator (net income or loss) and denominator (number of shares) used in the calculation of basic and diluted net loss per share attributable to common stockholders (in thousands):
|  | Year Ended December 31,
|  | 2019 |  | 2018
Numerator |  |  |  |  |  |
Net loss available to common stockholders |  | $ | (1,982) |  | $ | (13,343)
Denominator |  |  |  |  |  |
Weighted average shares used in computing basic and diluted net loss per share available to common stockholders |  |  | 8,763 |  |  | 8,373
Basic and diluted net loss per share of common stock |  | $ | (0.23) |  | $ | (1.59)

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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