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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of stock option activity
       Stock Options   Restricted Stock Units 
   Number of Shares
Available for
Issuance Under
the Plan		   Number of
Shares		   Weighted-
Average
Exercise
Price		   Number of
Shares		   Weighted-
Average Grant
Date Fair
Value		 
Outstanding at December 31, 2020   2,538,648    4,710,717   $7.06    413,277   $9.21 
Granted (1)   (584,024)   207,398    15.96    376,626    14.74 
Options exercised and RSUs vested   
-
    (103,572)   4.06    (7,726)   13.79 
Forfeited or expired   87,214    (77,321)   4.13    (9,893)   11.56 
Outstanding at June 30, 2021   2,041,838    4,737,222   $7.50    772,284   $11.83 

 
Schedule of assumptions used to value the company's stock options grants
    Three months ended
June 30,		     Six months ended
June 30,		  
    2021     2020     2021     2020  
                         
Dividend yield    
N/A
       0 %     0 %     0 %
Expected volatility    
N/A
       60 %     60 %     60 %
Expected term (years)    
N/A
       6.25       2.50-6.25       6.25  
Risk-free interest rate    
N/A
       1.48 %     0.14%-1.11 %      0.45%-1.72 % 
Weighted average grant date fair value    
N/A
     $ 2.38     $ 6.61     $ 2.06  
Stock-based compensation – Options   $ 910     $ 438     $ 2,729     $ 764  
Stock-based compensation - RSUs   $ 627     $
-
     $ 1,131     $ -