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Stock-based Awards
 9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Stock-based Awards Stock-based Awards
Stock Options
A summary of the Company’s stock option activity for the nine months ended September 30, 2024 is as follows:
 Number of
Options		Weighted-Average Exercise PriceWeighted-Average
Remaining
Contractual Life
   (in years)
Outstanding — December 31, 20232,240,898 $10.65 3.1
Granted— —  
Exercised(22,727)2.68  
Forfeited/expired(873,422)12.37  
Outstanding — September 30, 20241,344,749 $9.67 3.7
At September 30, 2024, total remaining stock-based compensation expense for unvested stock option awards was $0.1 million, which is expected to be recognized over a weighted-average period of 0.5 years. For the three months ended September 30, 2024 and 2023, the Company recorded stock-based compensation expense for stock option awards of less than $0.1 million and $0.2 million, respectively. For the nine months ended September 30, 2024 and 2023, the Company recorded stock-based compensation expense for stock option awards of $0.2 million and $0.9 million, respectively.
Restricted Stock Units
Activity in connection with restricted stock units is as follows for the nine months ended September 30, 2024:
 Number of
Shares		Weighted- Average Grant Date Fair Value
Non-vested — December 31, 20235,763,510 $2.94 
Granted3,480,100 3.45 
Vested(2,153,845)3.13 
Forfeited(1,103,038)3.23 
Non-vested — September 30, 20245,986,727 $3.12 
At September 30, 2024, total remaining stock-based compensation expense for non-vested restricted stock units was $17.3 million, which is expected to be recognized over a weighted-average period of 2.7 years. For the three months ended September 30, 2024 and 2023, the Company recorded $2.0 million and $2.4 million in stock-based compensation expense for restricted stock units, respectively. For the nine months ended September 30, 2024 and 2023, the Company recorded $6.1 million and $8.9 million in stock-based compensation expense for restricted stock units, respectively.
Performance Stock Units
Activity in connection with performance stock units is as follows for the nine months ended September 30, 2024:
 Number of
Shares		Weighted- Average Grant Date Fair Value
Non-vested — December 31, 20232,518,556 $4.18 
Granted1,231,577 4.39 
Vested(364,837)5.99 
Forfeited(131,555)5.25 
Non-vested — September 30, 2024
3,253,741 $4.01 
At September 30, 2024, total remaining stock-based compensation expense for non-vested performance stock units was $6.1 million, which is expected to be recognized over a weighted-average period of 2.1 years. For the three months ended September 30, 2024 and 2023, the Company recorded $0.9 million and $0.7 million in stock-based compensation expense for performance stock units, respectively. For the nine months ended September 30, 2024 and 2023, the Company recorded $2.5 million and $2.1 million in stock-based compensation expense for performance stock units, respectively.
Stock-based Compensation Cost
The Company recorded stock-based compensation cost relating to stock options, restricted stock units, and performance stock units in the following categories on the accompanying condensed consolidated statements of comprehensive loss (in thousands):
 Three Months Ended
September 30,		Nine Months Ended
September 30,
 2024202320242023
Cost of revenue$66 $44 $180 $148 
Sales and marketing434 493 1,349 3,215 
Technology and development496 1,031 1,524 3,028 
General and administrative1,957 1,705 5,721 5,481 
Total stock-based compensation expense2,953 3,273 8,774 11,872 
Amount capitalized to internal software use187 204 554 651 
Total stock-based compensation cost$3,140 $3,477 $9,328 $12,523