v3.21.2
Stock Based Awards (Tables)
 9 Months Ended
Sep. 30, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity

The following table summarizes stock option transactions for the 2007 Plan and 2015 Plan, collectively, for the nine months ended September 30, 2021 (in thousands, except per share amounts):

 Schedule of Share-based Compensation, Stock Options, Activity

   Number of
Shares
Available
for Grant		   Total
Options
Outstanding		   Weighted
Average
Exercise
Price		   Aggregate
Intrinsic
Value		 
Balance at December 31, 2020   2,263    1,779   $2.53   $- 
Increase in authorized options   5,000    -    -    - 
Exercised   -    -    -    - 
Granted   (1,037)   1,037    1.11    - 
Expired   976    -    -    - 
Cancelled   341    (341)   2.15    - 
Balance at September 30, 2021   7,543    2,475   $1.99    - 
Schedule of Weighted Average Assumptions Used for Grants

The fair value of share option award is estimated using the Black-Scholes option pricing method based on the following weighted-average assumptions:

 Schedule of Weighted Average Assumptions Used for Grants

               
   Nine Months Ended September 30, 
   2021   2020 
         
Risk-Free interest rate   0.91%   0.43%
Expected dividend yield   0.00%   0.00%
Expected volatility   114.62%   107.45%
Expected term (in years)   5.8    5.9 
Schedule of Common Stock Reserved Future Issuance

The following table presents information concerning common stock available for future issuance (in thousands) as of:

 Schedule of Common Stock Reserved Future Issuance

   September 30, 2021   September 30, 2020 
Stock options issued and outstanding   2,475    1,801 
Shares authorized for future option grants   7,543    2,718 
Warrants outstanding   243    243 
Total   10,261    4,762