Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Details - Option activity)

v3.21.1
STOCK-BASED COMPENSATION (Details - Option activity) - Equity Option - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Options outstanding, beginning balance (shares) 25,225  
Options outstanding, granted (shares) 5,350  
Options outstanding, exercised (shares) 0  
Options outstanding, forfeited (shares) (28)  
Options outstanding, ending balance (shares) 30,547 25,225
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]    
Weighted average exercise price, beginning balance (in USD per share) $ 0.48  
Weighted average exercise price, granted (in USD per share) 0.59  
Weighted average exercise price, exercised (in USD per share) 0  
Weighted average exercise price, forfeited (in USD per share) 0.61  
Weighted average exercise price, ending balance (in USD per share) $ 0.50 $ 0.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]    
Options outstanding, exercisable (shares) 22,869  
Options outstanding, vested or expected to vest (shares) 30,547  
Weighted average exercise price, exercisable (in USD per share) $ 0.46  
Weighted average exercise price, vested or expected to vest (in USD per share) $ 0.50  
Weighted average remaining contract term 6 years 3 months 18 days 5 years 8 months 12 days
Weighted average remaining contract term, exercisable 5 years 1 month 6 days  
Weighted average remaining contract term, vested or expected to vest 6 years 3 months 18 days  
Aggregate intrinsic value $ 1,991 $ 2,186
Aggregate intrinsic value, exercisable 1,883  
Aggregate intrinsic value, vested or expected to vest $ 1,991