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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Restricted Stock Unit Activity A summary of our restricted stock unit activity is set forth below:

SharesWeighted Average Grant Date Fair Value
Outstanding as of December 31, 20201,677,060 $1.41 
Granted4,884,848 1.90 
Released(2,593,237)1.57 
Forfeited(392,401)1.66 
Outstanding as of December 31, 20213,576,270 $1.94 
Schedule of Stock Options Activity A summary of our stock option activity under the 2009 Plan and related information is set forth below:

Number of SharesWeighted Average Exercise Price
Weighted Average Remaining
Contractual Term (years)
Aggregate Intrinsic Value
Outstanding as of December 31, 20191,465,450 $0.80 6.86$771 
Granted— — 
Exercised(185,234)1.06 
Cancelled/Expired(71,476)1.77 
Outstanding as of December 31, 20201,208,740 $0.80 6.19$700 
Granted— — 
Exercised(260,451)0.69 
Cancelled/Expired(22,822)2.01 
Outstanding as of December 31, 2021925,467 $0.80 5.59$1,692 
Exercisable as of December 31, 2021904,259 $0.79 5.58$1,668 
Stock-Based Compensation Compensation cost that has been included in our consolidated statements of operations and comprehensive loss for all stock-based compensation arrangements is set forth below:
Year Ended December 31,
Stock-based compensation20212020
Cost of revenues$1,050 $274 
Sales and marketing437 64 
General and administrative2,770 4,083 
Research and development684 71 
Total stock-based compensation$4,941 $4,492