v3.22.2.2
Share-based Compensation (Tables)
 9 Months Ended
Sep. 30, 2022
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Schedule of share-based compensation expense
Total share-based compensation expense related to share-based awards excluding the acceleration of Antares unvested equity awards was comprised of the following (in thousands):
Three Months Ended
 September 30,		Nine Months Ended
September 30,
 2022202120222021
Research and development$2,695 $1,842 $7,168 $5,254 
Selling, general and administrative4,102 3,557 10,006 10,440 
Share-based compensation expense$6,797 $5,399 $17,174 $15,694 
Schedule of share-based compensation expense by type
Share-based compensation expense by type of share-based award (in thousands):
Three Months Ended
 September 30,		Nine Months Ended
September 30,
 2022202120222021
Stock options$2,801 $2,629 $7,924 $7,747 
RSAs, RSUs, PSUs and ESPP3,996 2,770 9,250 7,947 
$6,797 $5,399 $17,174 $15,694 
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,
 2022202120222021
Expected volatility
40.37-50.80%
42.90-44.73%
40.37-50.80%
42.90-46.45%
Average expected term (in years)4.74.74.74.7
Risk-free interest rate
2.66-3.39%
0.66-0.89%
1.37-3.39%
0.36-0.89%
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, 2022
 Unrecognized
Expense		Remaining
Weighted-Average
Recognition Period
(years)
Stock options$27,500 2.73
RSUs$30,791 2.58
PSUs$4,530 2.16
ESPP$77 0.21