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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 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 six months ended June 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 
Granted884 27.78 
Exercised(547)9.14 
Canceled(222)29.35 
Outstanding at June 30, 20226,372 $15.40 6.17$71,562 
Options vested and exercisable at June 30, 20224,378 $9.86 4.94$64,507 
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 six months ended June 30, 2022 (shares in thousands):
Number of AwardsWeighted Average Grant Date Fair Value
Unvested balance at December 31, 20214,485 $42.73 
Granted3,696 26.18 
Issued(2,117)40.59 
Canceled / forfeited(715)39.04 
Unvested balance at June 30, 20225,349 $32.32 
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 June 30,Six Months Ended June 30,
2022202120222021
Cost of customer agreements and incentives$2,169 $1,992 $5,356 $4,224 
Cost of solar energy systems and product sales
1,682 1,045 5,014 2,349 
Sales and marketing13,490 23,227 37,624 50,333 
Research and development743 803 1,696 1,479 
General and administration8,569 16,396 16,182 63,107 
Total$26,653 $43,463 $65,872 $121,492