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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule 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, 2024 (shares and aggregate intrinsic value in thousands):
Number of OptionsWeighted Average Exercise PriceWeighted Average Remaining Contractual LifeAggregate Intrinsic Value
Outstanding at December 31, 20234,243 $17.19 4.85$31,762 
Granted— — 
Exercised(665)6.54 
Canceled(43)26.63 
Outstanding at September 30, 20243,535 $19.08 4.75$19,514 
Options vested and exercisable at September 30, 20243,176 $17.57 4.45$19,514 
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, 2024 (shares in thousands):
Number of AwardsWeighted Average Grant Date Fair Value
Unvested balance at December 31, 20238,449 $22.16 
Granted8,840 14.05 
Issued(3,325)22.43 
Canceled / forfeited(1,171)18.74 
Unvested balance at September 30, 202412,793 $16.76 
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,
2024202320242023
Cost of customer agreements and incentives$2,143 $2,335 $6,388 $6,224 
Cost of solar energy systems and product sales
463 1,153 1,552 4,415 
Sales and marketing11,453 14,096 38,444 43,808 
Research and development1,117 405 8,191 1,299 
General and administration11,816 9,734 29,381 28,480 
Total$26,992 $27,723 $83,956 $84,226