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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 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 six months ended June 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(559)6.03 
Canceled(39)27.64 
Outstanding at June 30, 20243,645 $18.79 4.97$7,786 
Options vested and exercisable at June 30, 20243,214 $16.88 4.62$7,786 
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, 2024 (shares in thousands):
Number of AwardsWeighted Average Grant Date Fair Value
Unvested balance at December 31, 20238,449 $22.16 
Granted8,285 13.82 
Issued(2,645)22.22 
Canceled / forfeited(918)19.01 
Unvested balance at June 30, 202413,171 $16.86 
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,
2024202320242023
Cost of customer agreements and incentives$2,299 $2,048 $4,245 $3,889 
Cost of solar energy systems and product sales
535 1,494 1,089 3,262 
Sales and marketing11,816 14,835 26,991 29,712 
Research and development4,462 452 7,074 894 
General and administration8,983 9,408 17,565 18,746 
Total$28,095 $28,237 $56,964 $56,503