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Share-based Compensation
 9 Months Ended
Sep. 30, 2020
Share-based Payment Arrangement [Abstract]  
Share-based Compensation Share-based Compensation
The Company included the following amounts for share-based compensation awards in the unaudited condensed consolidated statements of operations (in thousands):
 Three Months Ended
September 30,		Nine Months Ended
September 30,
  2020201920202019
Cost of revenues$308 $202 $1,296 $899 
Research and development491 183 2,292 1,315 
Sales and marketing531 307 1,810 1,339 
General and administrative877 561 2,790 2,402 
Total$2,207 $1,253 $8,188 $5,955 
Stock Options
The following table summarizes the Company’s stock option activity:
Outstanding — December 31, 20199,044,304 
Granted1,526,000 
Exercised(910,490)
Canceled(450,777)
Outstanding — September 30, 20209,209,037 
Exercisable — September 30, 20204,034,796 
At September 30, 2020, total unrecognized compensation expense related to stock options was $13.6 million, which is expected to be recognized over a weighted-average period of 2.66 years.
Restricted Stock Units
The following table summarizes the Company’s restricted stock unit (“RSU”) activity:
Non-vested — December 31, 2019400,315 
Granted437,413 
Vested(486,092)
Forfeited(4,584)
Non-vested — September 30, 2020347,052 
At September 30, 2020, total unrecognized compensation expense related to RSUs was $1.4 million, which is expected to be recognized over a weighted-average period of 1.82 years.