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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2021
Share-based Payment Arrangement [Abstract]  
Share-based Payment Arrangement, Expensed and Capitalized, Amount
The following are the stock-based compensation expense incurred for the three and nine months ended September 30, 2021 (in thousands). We recorded immaterial share-based compensation expense for the comparative periods ended September 30, 2020.
Three Months Ended September 30, 2021Nine Months Ended September 30, 2021
Cost of sales - services$442 $1,974 
Sales and marketing1,536 5,316 
Research and development970 2,079 
General and administrative9,243 37,828 
Total$12,191 $47,197 
Non-Vested Restricted Stock A summary of the awards of Service-Based RSUs that vest upon the completion of a service requirement are presented below:
Number of
Shares		Weighted-
Average Grant
Date Fair
Value
(per share)		Weighted-
Average
Contractual
Life (years)		Aggregate
Intrinsic
Value
(in thousands)
Unvested Balance - December 31, 202059,521 $0.18 2.4$2,000 
Granted3,036,563 35.69 — — 
Vested(119,800)36.17 — — 
Forfeited(79,476)36.63 — — 
Unvested Balance - September 30, 20212,896,808 $35.04 1.5$82,300 
A summary of the awards of Performance-Based RSUs that vest upon the attainment of certain price targets of the Company’s common stock are presented below:
Number of
Shares		Weighted-
Average Grant
Date Fair
Value
(per share)		Weighted-
Average
Contractual
Life (years)		Aggregate
Intrinsic
Value
(in thousands)
Unvested Balance - December 31, 2020— $— — $— 
Granted508,903 30.09 — — 
Vested— — — — 
Forfeited(16,176)30.84 — — 
Unvested Balance - September 30, 2021492,727 $30.07 2.5$14,000