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EARNINGS PER SHARE
6 Months Ended
Jun. 30, 2020
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 six months ended June 30, 2019 and 2020 because the effects of potentially dilutive items were anti-dilutive, given our net loss during these periods. The following securities as of June 30, 2019 and June 30, 2020 have been excluded from the calculation of diluted weighted-average common shares outstanding because the effect is anti-dilutive (in thousands):
 
June 30,
 
2019
 
2020
Common stock options
1,620

 
715

Common stock warrants
868

 

Unvested restricted stock units
1,846

 
2,627

Common stock issuable pursuant to the ESPP
22

 
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