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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2024
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 years ended December 31, 2024 and 2023 (shares and aggregate intrinsic value in thousands):
Number of Options
Weighted
Average
Exercise Price
Weighted
Average
Remaining
Contractual Life
Aggregate
Intrinsic
Value
Outstanding at December 31, 20225,217 $16.08 5.68$58,784 
Granted
— — 
Exercised
(775)6.58 
Canceled(199)29.58 
Outstanding at December 31, 20234,243 17.19 4.8531,762 
Granted
— — 
Exercised
(669)6.55 
Canceled(67)25.76 
Outstanding at December 31, 20243,507 $19.05 4.54$3,882 
Options vested and exercisable at December 31, 20243,218 $17.92 4.30$3,882 
Options vested and expected to vest at December 31, 20243,507 $19.05 4.54$3,882 
Schedule of Estimated Fair Value of Stock Options
The Company estimated the fair value of stock options with the following assumptions:
Year Ended December 31,
202420232022
Risk-free interest rate
N/A
N/A
 1.60% - 3.80%
Volatility
N/A
N/A
65.60% - 69.40%
Expected term (in years)
N/AN/A
6.10
Expected dividend yield
N/AN/A— %
Schedule of Activity for All RSUs
The following table summarizes the activity for all RSUs under all of the Company’s equity incentive plans for the years ended December 31, 2024 and 2023 (shares in thousands):
Shares
Weighted
Average Grant
Date Fair
Value
Unvested balance at December 31, 20224,542 $31.60 
Granted
7,782 19.04 
Issued
(2,835)27.11 
Canceled / forfeited(1,040)26.59 
Unvested balance at December 31, 20238,449 22.16 
Granted
9,447 13.88 
Issued
(4,079)22.03 
Canceled / forfeited(1,442)18.29 
Unvested balance at December 31, 202412,375 $16.29 
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): 
Year Ended December 31,
202420232022
Cost of customer agreements and incentives$8,538 $8,772 $9,181 
Cost of solar energy systems and product sales
1,999 5,267 9,274 
Sales and marketing
50,741 59,026 56,857 
Research and development
9,961 1,739 2,667 
General and administration
41,586 36,977 32,654 
Total
$112,825 $111,781 $110,633