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Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Stock-based Compensation

Summary of performance share units activity

​

​	​	​	​	​	​
​	​	​	​	Weighted-Average
​	​	Shares	​	Grant Date Fair Value
Outstanding as of December 31, 2022	​	447,770	​	$	28.71
Granted	​	216,500	​	​	38.71
Vested	​	(223,170)	​	​	27.99
Forfeited	​	—	​	​	—
Performance adjustment	​	62,780	​	​	27.14
Outstanding as of September 30, 2023	​	503,880	​	$	33.13

Summary of restricted stock units activity

​

​	​	​	​	​	​
​	​	​	​	Weighted-Average
​	​	Shares	​	Grant Date Fair Value
Outstanding as of December 31, 2022	​	2,047,571	​	$	19.67
Granted	​	1,268,907	​	​	26.27
Vested	​	(644,746)	​	​	19.90
Forfeited	​	(179,711)	​	​	21.85
Outstanding as of September 30, 2023	​	2,492,021	​	$	22.81

Summary of stock option activity

​

​	​	​	​	​	​	​	​	​	​	​
​		​		​	​		Weighted-		​	​
​	​	​		​	Weighted-		Average	​	​	​
​	​	​		​	Average		Remaining	​	​	Aggregate
​	​	​	​	​	Exercise Price		Contractual	​	​	Intrinsic
​		Shares		​	per Share		Term (in years)		​	Value
Outstanding as of December 31, 2022		1,683,805	​	$	18.84		5.5	​	$	7,953
Exercised		(327,722)	​	​	16.43	​	​	​	​	​
Cancelled		(8,923)	​	​	18.87	​	​	​	​	​
Outstanding as of September 30, 2023		1,347,160	​	$	19.43		4.7	​	$	4,952
Exercisable as of September 30, 2023		1,310,344	​	$	19.38	​	4.6	​	$	4,910

Summary of stock-based compensation

​

​	​	​	​	​	​	​	​	​	​	​	​
​	Three Months Ended September 30,					​	Nine Months Ended September 30,
​	2023		​	2022		​	2023		​	2022
Research and development	$	—		$	—	​	$	—		$	1,591
Selling, general and administrative		7,027	​	​	5,377	​		20,134	​	​	15,613
Total stock-based compensation expense	$	7,027	​	$	5,377	​	$	20,134	​	$	17,204

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the change in restricted stock units (RSUs).

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