Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2022

Stock-based Compensation

Summary of performance share units activity

		Weighted-Average
	Shares	Grant Date Fair Value
Outstanding at December 31, 2021	353,100	$	31.77
Granted	241,550		24.12
Vested	(126,081)		29.12
Forfeited	(22,104)		29.60
Performance adjustment	1,305		28.96
Outstanding at September 30, 2022	447,770	$	28.71

Summary of restricted stock units activity

		Weighted-Average
	Shares	Grant Date Fair Value
Outstanding at December 31, 2021	1,620,023	$	22.48
Granted	1,272,497		17.48
Vested	(565,669)		21.93
Forfeited	(366,691)		20.58
Outstanding at September 30, 2022	1,960,160	$	19.75

Summary of stock option activity

				Weighted-
			Weighted-	Average
			Average	Remaining		Aggregate
			Exercise Price	Contractual		Intrinsic
	Shares		per Share	Term (in years)		Value
Outstanding at December 31, 2021	2,728,169	$	18.33	5.8	$	6,070
Granted	—		—
Exercised	(302,752)		16.34
Cancelled	(268,916)		21.38
Outstanding at September 30, 2022	2,156,501	$	18.23	5.4	$	2,142
Exercisable at September 30, 2022	1,969,414	$	18.18	5.2	$	2,023

Summary of stock-based compensation

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Research and development	$	—	$	233	$	1,591	$	2,697
Selling, general and administrative		5,377		5,715		15,613		16,646
Total stock-based compensation expense	$	5,377	$	5,948	$	17,204	$	19,343