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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock-Based Compensation Expenses
The components of the Company’s share-based compensation expense were as follows:
Three Months Ended June 30,
Six Months Ended June 30,
(in thousands)20242023
2024
2023
Stock options$1,292 $1,752 $2,638 $3,140 
Restricted stock3,236 3,358 6,713 7,057 
Performance vested restricted stock units4,749 7,096 9,020 11,780 
Total share-based compensation expense$9,277 $12,206 $18,371 $21,977 
Schedule of Stock-Based Award Activity
A summary of the share-based award activity during the six months ended June 30, 2024 is presented below:
 Stock OptionsRestricted StockPerformance Vested
Restricted Stock Units
 OptionsWeighted
Average
Exercise
Price
Weighted
Average
Remaining
Contractual
Life
SharesWeighted
Average
Grant Date
Fair Value
SharesWeighted
Average
Grant Date
Fair Value
Outstanding as of January 1, 2024943,641 $102.90 361,668 $136.05 458,495 $136.14 
Granted78,988 111.94 61,974 113.74 145,228 112.15 
Performance-based leveraging (1)
    (3,772)129.01 
Exercised/vested(88,483)71.87 (52,538)108.91 (146,675)107.54 
Expired    (8,028)108.79 
Forfeited(440)123.71 (5,494)120.32 (6,721)130.04 
Outstanding as of June 30, 2024933,706 $106.60 6.0 years365,610 $136.37 438,527 $138.42 
Options exercisable as of June 30, 2024637,932 $99.51 4.9 years
(1) Any revisions to the outstanding PVRSUs during the six months ended June 30, 2024 is based on the Company's performance relative to the targeted performance conditions in the respective PVRSUs.
Schedule of Weighted Average Assumptions of Black-Scholes Option-Pricing Model The fair value of the stock options granted during the six months ended June 30, 2024 was estimated on the grant date using the Black-Scholes option-pricing model with the following weighted average assumptions:
Risk-free interest rate4.27 %
Expected volatility31.34 %
Expected life of the stock option6 years
Dividend yield1.03 %
Requisite service period4 years
Contractual life10 years
Weighted average fair value of the stock options granted (per stock option)$38.85