Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY - The activity for stock subject to vesting (Details)

v3.21.2
STOCKHOLDERS' EQUITY - The activity for stock subject to vesting (Details) - Restricted Stock awards
shares in Thousands
6 Months Ended
Jun. 30, 2021
$ / shares
shares
Shared subject to vesting  
Balance at beginning of period, unvested shares (in shares) | shares 280
Vested (in shares) | shares (112)
Balance at end of period, unvested shares (in shares) | shares 168
Weighted-Average Purchase Price  
Balance at beginning of Period, unvested shares (in dollars per share) | $ / shares $ 0.0001
Vested (in dollars per share) | $ / shares 0.0001
Balance at end of Period, unvested shares (in dollars per share) | $ / shares $ 0.0001