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Net Loss Per Share Attributable to Common Stockholders (Tables) | 12 Months Ended
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Dec. 31, 2019
Net Loss Per Share Attributable to Common Stockholders |
Outstanding Securities Considered 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
Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted Net (Loss) per Share Available to Common Stockholders | 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 Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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