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Equity Plans - (Tables)
6 Months Ended
Jun. 30, 2022
Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Grant Date Intrinsic Value [Table Text Block]
A summary of activity related to stock option is summarized as below (in thousands, except for share and per share data):
 
    
Number of

Options
    
Weighted-Average

Exercise Price
    
Weighted-average

contractual life
(in years)
    
Aggregate
Intrinsic
value
 
Outstanding – December 31, 2021
     11,468,275      $  0.36        8.1      $  46,839  
Granted
     —                               
Exercised
     (1,353,145    $ 0.27                 7,104  
Forfeited and expired
     (632,419    $ 0.27                    
    
 
 
    
 
 
    
 
 
    
 
 
 
Outstanding - June 30, 2022
     9,482,711      $ 0.35        7.7      $ 31,454  
    
 
 
    
 
 
    
 
 
    
 
 
 
Exercisable - June 30, 2022
     5,874,426      $ 0.39        7.7      $ 19,258  
Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs
The table below summarizes the total stock compensation expenses for the three and six months ended June 30, 2022 and 2021 (in thousands):
 
    
3 Months Ended
    
6 Months Ended
 
    
June 30,
    
June 30,
 
    
2022
    
2022
 
Research and development
   $ 2,209      $ 4,598  
Sales and marketing expenses
     256        697  
General and administrative expenses
     8,576        17,227  
    
 
 
    
 
 
 
Total Stock Compensation Expenses
   $ 11,041      $ 22,522  
    
 
 
    
 
 
 
 
    
3 Months Ended
    
6 Months Ended
 
    
June 30,
    
June 30,
 
    
2021
    
2021
 
Research and development
   $ 299      $ 638  
Sales and marketing expenses
     29        61  
General and administrative expenses
     193        419  
    
 
 
    
 
 
 
Total Stock Compensation Expenses
   $ 521      $ 1,118  
    
 
 
    
 
 
 
 
Schedule Of Share Based Payment Award Stock Options Valuation Assumptions
The Company did not grant any stock option awards during the six months ended June 30, 2022. The range of assumptions used in the Black-Scholes option-pricing model for options issued to employees during the six months ended June 30, 2021, are as follows:
 
    
June 30,
 
    
2021
 
Expected volatility
     46.8
Weighted-average risk-free interest rate
     1.07
Expected dividend yield
     0
Expected term (in years)
     6.1 years  
Exercise price
   $ 0.21  
Schedule of Activity Related to Restricted Stock Units
A summary of activity related to RSUs is summarized as below:
 
    
RSUs
    
Weighted Average
Fair Value
Per Share
 
Balance at December 31, 2021
     5,388,455           
Granted
     9,885,413      $ 4.89  
Vested
     (2,630,699         
Forfeited
     (792,643         
    
 
 
          
Balance at June 30, 2022
     11,850,526