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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2022
Share-Based Payment Arrangement [Abstract]  
Summary of Stock Based Compensation Expense
Stock-based compensation expense is summarized as follows:
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2022202120222021
Stock-based compensation expense$4,572 $7,849 $14,119 $15,844 
Summary of Restricted Stock Units Activity
RSU activity, inclusive of PSUs, for the six months ended June 30, 2022 is summarized as follows: 
Number
of Shares		Weighted Average
Grant Date
Fair Value
Outstanding at December 31, 2021430,730 $138.01 
Granted175,379 $193.35 
Forfeited(36,336)$116.73 
Settled(183,995)$119.53 
Outstanding at June 30, 2022385,778 $173.99