Post-effective amendment to a registration statement that is not immediately effective upon filing

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

v3.21.1
STOCKHOLDERS' EQUITY - The activity for stock subject to vesting (Details) - Unvested restricted stock units outstanding - $ / shares
shares in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Shared subject to vesting    
Balance at beginning of period, unvested shares (in shares) 280 5,587
Vested (in shares) (56) (5,307)
Balance at end of period, unvested shares (in shares) 224 280
Weighted Average Grant Date Fair Value    
Balance at beginning of Period, unvested shares (in dollars per share) $ 0.0001 $ 0.0001
Vested (in dollars per share) 0.0001 0.001
Balance at end of Period, unvested shares (in dollars per share) 0.0001 0.0001
As Reported    
Weighted Average Grant Date Fair Value    
Balance at beginning of Period, unvested shares (in dollars per share) $ 0.001  
Balance at end of Period, unvested shares (in dollars per share)   $ 0.001