Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Stock-based Compensation

Summary of the stock-based compensation activity

	Quarter ended March 31,
	2023		2022
	(in thousands)
Grants:
Units:
Performance-based restricted share units ("RSUs")		307		342
Stock options		221		574
Time-based RSUs		182		331
Grant date fair value:
Performance-based RSUs	$	18,611	$	19,522
Stock options		5,492		12,138
Time-based RSUs		11,041		18,903
Total	$	35,144	$	50,563
Vestings and exercises:
Performance-based RSUs vested		612		643
Stock options exercised		156		44
Time-based RSUs vested		245		244
Stock-based compensation expense	$	11,650	$	9,275