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Share-based Compensation (Tables)
 9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Schedule of share-based compensation expense
The following table summarized share-based compensation expense included in our condensed consolidated statements of income related to share-based awards (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
 2024202320242023
Research and development$3,598 $3,159 $9,511 $9,931 
Selling, general and administrative8,980 6,208 22,412 17,025 
Total share-based compensation expense$12,578 $9,367 $31,923 $26,956 
Schedule of share-based compensation expense by type
Share-based compensation expense by type of share-based award was as follows (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
 2024202320242023
Stock options$3,922 $4,290 $12,115 $11,935 
RSUs, PSUs and ESPP8,656 5,077 19,808 15,021 
Total share-based compensation expense$12,578 $9,367 $31,923 $26,956 
Schedule of assumptions used in Black-Scholes model The assumptions used in the Black-Scholes Model were as follows:
Three Months Ended September 30,Nine Months Ended September 30,
 2024202320242023
Expected volatility
40.35 - 40.46%
40.70 - 40.82%
40.01 - 40.46%
39.68 - 40.82%
Average expected term (in years)4.84.95.04.8
Risk-free interest rate
3.65 - 4.44%
4.19 - 4.29%
3.65 - 4.70%
3.37 - 4.29%
Expected dividend yield— — — — 
Schedule of unrecognized estimated compensation cost by type
Total unrecognized estimated compensation cost by type of award and the weighted-average remaining requisite service period over which such expense is expected to be recognized was as follows (in thousands, unless otherwise noted):
September 30, 2024
 Unrecognized
Expense
Remaining
Weighted-Average
Recognition Period
(in years)
Stock options$31,097 2.38
RSUs45,008 2.71
PSUs17,608 1.80
ESPP112 0.18