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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2025
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, 2025 (shares and aggregate intrinsic value in thousands):
Number of OptionsWeighted Average Exercise PriceWeighted Average Remaining Contractual LifeAggregate Intrinsic Value
Outstanding at December 31, 20243,507 $19.05 4.54$3,882 
Granted— — 
Exercised(63)10.91 
Canceled(58)16.05 
Outstanding at September 30, 20253,386 $19.25 3.88$17,008 
Options vested and exercisable at September 30, 20253,280 $18.93 3.79$17,008 
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, 2025 (shares in thousands):
Number of AwardsWeighted Average Grant Date Fair Value
Unvested balance at December 31, 202412,375 $16.29 
Granted12,632 6.74 
Issued(4,873)15.78 
Canceled / forfeited(1,569)11.95 
Unvested balance at September 30, 202518,565 $10.49 
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,
2025202420252024
Cost of customer agreements and incentives$2,391 $2,143 $7,163 $6,388 
Cost of solar energy systems and product sales
554 463 1,541 1,552 
Sales and marketing12,506 11,453 33,442 38,444 
Research and development1,190 1,117 3,334 8,191 
General and administration12,950 11,816 34,140 29,381 
Total$29,591 $26,992 $79,620 $83,956