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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2023
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, 2023 (shares and aggregate intrinsic value in thousands):
Number of OptionsWeighted Average Exercise PriceWeighted Average Remaining Contractual LifeAggregate Intrinsic Value
Outstanding at December 31, 20225,217 $16.08 5.68$58,784 
Granted— — 
Exercised(495)6.72 
Canceled(85)31.03 
Outstanding at June 30, 20234,637 $16.81 5.24$29,938 
Options vested and exercisable at June 30, 20233,674 $13.21 4.43$29,010 
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, 2023 (shares in thousands):
Number of AwardsWeighted Average Grant Date Fair Value
Unvested balance at December 31, 20224,542 $31.60 
Granted5,369 20.83 
Issued(1,588)27.78 
Canceled / forfeited(433)30.22 
Unvested balance at June 30, 20237,890 $25.13 
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,
2023202220232022
Cost of customer agreements and incentives$2,048 $2,169 $3,889 $5,356 
Cost of solar energy systems and product sales
1,494 1,682 3,262 5,014 
Sales and marketing14,835 13,490 29,712 37,624 
Research and development452 743 894 1,696 
General and administration9,408 8,569 18,746 16,182 
Total$28,237 $26,653 $56,503 $65,872