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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]  
Schedule of Summary of Stock Option Activity The following table summarizes the activity for all stock options under all of the Company’s equity incentive plans for the nine months ended September 30, 2022 (shares and aggregate intrinsic value in thousands):
Number of OptionsWeighted Average Exercise PriceWeighted Average Remaining Contractual LifeAggregate Intrinsic Value
Outstanding at December 31, 20216,257 $13.60 6.19$140,326 
Granted931 28.08 
Exercised(1,121)8.66 
Canceled(526)26.10 
Outstanding at September 30, 20225,541 $15.84 5.86$78,880 
Options vested and exercisable at September 30, 20223,974 $10.56 4.70$73,057 
Schedule of Activity for all Restricted Stock Units (RSUs) The following table summarizes the activity for all restricted stock units (“RSUs”) under all of the Company’s equity incentive plans for the nine months ended September 30, 2022 (shares in thousands):
Number of AwardsWeighted Average Grant Date Fair Value
Unvested balance at December 31, 20214,485 $42.73 
Granted4,051 27.57 
Issued(2,532)41.21 
Canceled / forfeited(1,308)36.23 
Unvested balance at September 30, 20224,696 $32.26 
Schedule of Stock-Based Compensation Expense The Company recognized stock-based compensation expense, including ESPP expenses, in the consolidated statements of operations as follows (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
2022202120222021
Cost of customer agreements and incentives$1,776 $3,136 $7,132 $7,360 
Cost of solar energy systems and product sales
1,741 1,588 6,755 3,937 
Sales and marketing10,418 23,856 48,042 74,189 
Research and development464 703 2,160 2,182 
General and administration8,431 9,979 24,613 73,086 
Total$22,830 $39,262 $88,702 $160,754