Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION (Details Narrative)

v3.21.1
STOCK-BASED COMPENSATION (Details Narrative)
12 Months Ended
Nov. 17, 2020
USD ($)
Grantees
$ / shares
Nov. 10, 2020
USD ($)
Grantees
$ / shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Dec. 31, 2018
$ / shares
shares
Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares     $ 1.42    
2015 Equity Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price per share | $ / shares     $ 2.21 $ 7.96 $ 8.08
Common stock authorized but unissued | shares     18,000,000    
Maximum contractual term     10 years    
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares     $ 2.26 $ 6.53  
Intrinsic value outstanding options | $     $ 1,700,000 $ 700,000  
Intrinsic value exercisable options | $     700,000 600,000  
Total intrinsic value of the options exercised | $     0 $ 400,000  
Compensation cost related to non-vested options not recognized | $     $ 7,800,000    
Weighted average period total compensation costs related to non-vested options     2 years 3 months 18 days    
Shares of restricted common stock vested | shares     1,300,000 0  
Compensation cost related to restricted common stock not recognized | $     $ 4,100,000    
Weighted average compensation costs related to restricted common stock     1 year 9 months 18 days    
Options outstanding and exercisable | shares     5,560,739 5,795,395 5,525,405
2015 Equity Incentive Plan [Member] | Eligible Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price per share | $ / shares   $ 1.15      
Number of grantees affected | Grantees   79      
Incremental compensation cost | $   $ 300,000 $ 600,000    
Recognized as compensation expense | $     300,000    
Incremental compensation costs recognized term   2 years 7 months 6 days      
2015 Equity Incentive Plan [Member] | Eligible Stock Options [Member] | Minimum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price per share | $ / shares   $ 1.16      
2015 Equity Incentive Plan [Member] | Eligible Stock Options [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price per share | $ / shares   $ 17.30      
2015 Equity Incentive Plan [Member] | Eligible Director Stock Options [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price per share | $ / shares $ 1.28        
Number of grantees affected | Grantees 4        
Incremental compensation cost | $ $ 100,000   500,000    
Recognized as compensation expense | $     $ 400,000    
Incremental compensation costs recognized term 2 years 4 months 24 days        
2015 Equity Incentive Plan [Member] | Eligible Director Stock Options [Member] | Minimum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price per share | $ / shares $ 1.29        
2015 Equity Incentive Plan [Member] | Eligible Director Stock Options [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price per share | $ / shares $ 18.50        
2005 Equity Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price per share | $ / shares     $ 8.55 $ 12.94 $ 14.15
Intrinsic value outstanding options | $     $ 0 $ 0  
Options outstanding and exercisable | shares     124,800 260,000 316,400