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EARNINGS PER SHARE | 9 Months Ended
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Sep. 30, 2019
Earnings Per Share [Abstract] |
EARNINGS PER SHARE | EARNINGS PER SHARE Diluted net loss per share is the same as basic net loss per share for the three and nine months ended September 30, 2018 and 2019 because the effects of potentially dilutive items were anti-dilutive, given our net loss during these periods. The following securities as of September 30, 2018 and September 30, 2019 have been excluded from the calculation of diluted weighted-average common shares outstanding because the effect is anti-dilutive (in thousands):
| September 30,
| 2018 |  | 2019
Common stock options | 1,862 |  |  | 1,505 |
Common stock warrants | 868 |  |  | 13 |
Unvested restricted stock units | 1,200 |  |  | 1,737 |
Common stock issuable pursuant to the ESPP | 151 |  |  | 49 |

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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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