Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Stock-based Compensation

Summary of the stock-based compensation activity

	Quarter ended September 30,				Nine months ended September 30,
	2023		2022		2023		2022
	(in thousands)
Grants:
Units:
Performance-based restricted share units ("RSUs")		—		—		307		342
Stock options		—		—		221		574
Time-based RSUs		—		—		187		331
Grant date fair value:
Performance-based RSUs	$	—	$	—	$	18,611	$	19,522
Stock options		—		—		5,492		12,138
Time-based RSUs		—		—		11,341		18,903
Total	$	—	$	—	$	35,444	$	50,563
Vestings and exercises:
Performance-based RSUs vested		—		—		612		643
Stock options exercised		61		20		412		83
Time-based RSUs vested		—		—		246		246
Stock-based compensation expense	$	8,814	$	6,466	$	20,839	$	30,689