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Net Loss Per Common Share | 3 Months Ended
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Mar. 31, 2020
Earnings Per Share [Abstract] |
Net Loss Per Common Share | Net Loss Per Common Share Basic net loss per common share is calculated by dividing net loss attributable to common stockholders by the weighted-average number of common shares outstanding during the period, without consideration of common stock equivalents. Diluted net loss per common share is computed by dividing net loss attributable to common stockholders by the weighted-average number of common share equivalents outstanding for the period determined using the treasury stock method. The following outstanding common stock equivalents have been excluded from diluted net loss per common share because their inclusion would be anti-dilutive:
| Three Months Ended March 31, |  |  |  |  |  |
| 2020 |  | 2019 |  |  |  |
Shares of common stock subject to outstanding options | 4,760,128 |  |  | 5,670,819 |  |  |  |  |
Employee stock purchase plan | 19,857 |  |  | 25,672 |  |  |  |  |
Restricted stock units | 936,524 |  |  | 538,759 |  |  |  |  |
Total common stock equivalents | 5,716,509 |  |  | 6,235,250 |  |  |  |  |

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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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