v3.22.1
Stock Based Awards (Tables)
 3 Months Ended
Mar. 31, 2022
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 three months ended March 31, 2022 (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, 2021   7,543    2,473   $1.98   $- 
Increase in authorized options   -    -    -    - 
Exercised   -    -    -    - 
Granted   -    -    -    - 
Expired   -    -    -    - 
Cancelled   -    (7)   3.30    - 
Balance at March 31, 2022   7,543    2,466   $1.98   $- 
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

         
   Three Months Ended March 31, 
   2022   2021 
         
Risk-Free interest rate   1.04%   0.95%
Expected dividend yield   0.00%   0.00%
Expected volatility   76.24%   54.93%
Expected term (in years)   4.33    3.3 
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

   March 31, 2022   March 31, 2021 
Stock options issued and outstanding   2,466    1,773 
Shares authorized for future option grants   7,543    2,263 
Warrants outstanding   243    243 
Total   10,252    4,279