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Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2024

Stock-based Compensation

Summary of performance share units activity

​

​	​	​	​	​	​
​	​	​	​	Weighted-Average
​	​	Shares	​	Grant Date Fair Value
Outstanding as of December 31, 2023	​	503,880	​	$	33.13
Granted	​	203,000	​	​	45.06
Vested	​	(514,050)	​	​	32.53
Forfeited	​	(165,700)	​	​	43.12
Performance adjustment	​	196,550	​	​	32.58
Outstanding as of September 30, 2024	​	223,680	​	$	37.45

Summary of restricted stock units activity

​

​	​	​	​	​	​
​	​	​	​	Weighted-Average
​	​	Shares	​	Grant Date Fair Value
Outstanding as of December 31, 2023	​	2,443,907	​	$	22.88
Granted	​	1,205,775	​	​	34.63
Vested	​	(940,377)	​	​	23.22
Forfeited	​	(276,827)	​	​	27.94
Outstanding as of September 30, 2024	​	2,432,478	​	$	27.99

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, 2023		1,176,750	​	$	19.48		4.3	​	$	13,297
Exercised		(491,527)	​	​	20.49	​	​	​	​	​
Cancelled		(1,000)	​	​	27.73	​	​	​	​	​
Outstanding as of September 30, 2024		684,223	​	$	18.74	​	3.6	​	$	13,616
Exercisable as of September 30, 2024		684,083	​	$	18.74	​	3.6	​	$	13,613

Summary of stock-based compensation

​

​	​	​	​	​	​	​	​	​	​	​	​
​	Three Months Ended September 30,					​	Nine Months Ended September 30,
​	2024		​	2023		​	2024		​	2023
Selling, general and administrative	$	7,317	​	$	7,027	​	$	24,804	​	$	20,134
Total stock-based compensation expense	$	7,317	​	$	7,027	​	$	24,804	​	$	20,134

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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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Tabular disclosure of number and weighted-average grant date fair value for nonvested performance shares.

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