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Share-Based Compensation and Capital Stock (Tables)
12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Schedule of Weighted Average Assumptions of Black-Scholes Option-Pricing Model The fair value of the options granted was estimated on the grant date using the Black-Scholes option-pricing model with the following weighted average assumptions: 
202220212020
Risk-free interest rate2.01 %0.94 %0.99 %
Expected volatility29.46 %29.23 %20.88 %
Expected life of stock option5.9 years5.9 years5.9 years
Dividend yield0.66 %0.82 %0.99 %
Requisite service period4 years4 years4 years
Contractual life10 years10 years10 years
Weighted average fair value of options granted (per option)$42.66 $28.00 $17.25 
Schedule of Options Outstanding and Exercisable The following table summarizes information about stock options outstanding as of December 31, 2022:
 Options OutstandingOptions Exercisable
Range of Exercise PricesNumber Outstanding at December 31, 2022Weighted Average
Remaining
Contractual Life (Years)
Weighted
Average
Exercise Price
Number Exercisable at December 31, 2022Weighted
Average
Exercise Price
$45.59 to $55.00
105,172 0.16$51.49 105,172 $51.49 
$55.01 to $65.00
78,855 1.2260.69 78,855 60.69 
$65.01 to $85.00
230,110 2.7581.31 194,648 81.34 
$85.01 to $91.28
153,692 7.1791.28 76,838 91.28 
$91.29 to $104.87
273,567 8.16104.87 68,343 104.87 
$104.88 to $117.98
16,667 9.63117.98 — — 
$117.99 to $146.68
152,584 9.16146.68 — — 
1,010,647 5.58$94.97 523,856 $76.77 
Schedule of Activity Related to Restricted Stock Grants
The following table is a summary of activity related to restricted stock grants:
For the Year Ended December 31,
202220212020
Restricted shares granted273,777 61,009 158,133 
Weighted average grant date fair value per share$143.76 $111.25 $90.18 
Aggregate grant date fair value (in thousands)$39,357 $6,787 $14,260 
Restricted shares forfeited14,443 19,209 36,860 
Vesting service period of shares granted
9 - 60 months
9 - 48 months
12 - 48 months
Fair value of shares vested (in thousands)$13,784 $11,927 $9,000 
Schedule of Activity Related to PVRSU Grants
The following table is a summary of activity related to PVRSU grants:
For the Years Ended December 31,
202220212020
PVRSUs granted at target111,585 98,544 170,471 
Weighted average grant date fair value per share$181.91 $108.75 $134.26 
Aggregate grant date fair value (in thousands)$20,298 $10,716 $22,888 
PVRSUs forfeited & expired83,563 78,500 33,080 
Requisite service period
9 - 60 months
9 to 60 months
31 to 36 months
Schedule of Change in Stock-Based Award Activity
A summary of stock-based award activity as of December 31, 2022, 2021 and 2020 and the changes during those years are presented below:
2022
Stock OptionsRestricted StockPerformance Vested
Restricted Stock Units
OptionsWeighted Average Exercise PriceWeighted
Average
Remaining Contractual
Life
SharesWeighted
Average Grant
Date Fair Value
SharesWeighted
Average Grant
Date Fair Value
Outstanding as of January 1, 2022910,944 $83.14 236,599 $92.60 412,642 $114.70 
Granted172,441 143.91 273,777 143.76 111,585 181.91 
Performance-based leveraging*    (3,484)121.34 
Exercised/vested(66,192)57.55 (96,834)87.34   
Expired(986)51.49   (78,370)81.15 
Forfeited(5,560)128.86 (14,443)106.35 (5,193)132.06 
Outstanding as of December 31, 20221,010,647 $94.97 5.6 years399,099 $128.47 437,180 $140.05 
Options exercisable as of December 31, 2022523,856 $76.77 3.3 years
* PVRSU units outstanding have been adjusted by 3,484, net units during the year ended December 31, 2022, due to a decrease in outstanding PVRSU units due to the Company partially meeting the targeted performance conditions offset by an increase in outstanding PVRSU units due to the Company exceeding the targeted performance conditions in PVRSU's granted in prior periods.
2021
Stock OptionsRestricted StockPerformance Vested
Restricted Stock Units
OptionsWeighted Average Exercise PriceWeighted
Average
Remaining Contractual
Life
SharesWeighted
Average Grant
Date Fair Value
SharesWeighted
Average Grant
Date Fair Value
Outstanding as of January 1, 2021819,610 $70.48 304,439 $84.48 321,752 $109.25 
Granted280,811 104.87 61,009 111.25 98,544 108.75 
Performance-based leveraging*— — — — 74,832 107.51 
Exercised/vested(185,437)59.61 (109,640)80.83 (3,986)81.55 
Expired— — — — (72,944)81.55 
Forfeited(4,040)104.87 (19,209)90.23 (5,556)55.76 
Outstanding as of December 31, 2021910,944 $83.14 5.5 years236,599 $92.60 412,642 $114.70 
Options exercisable as of December 31, 2021421,592 $67.09 2.8 years
* PVRSU units outstanding have been increased by 74,832 units during the year ended December 31, 2021, due to the Company exceeding the targeted performance conditions contained in PVRSU's granted in prior periods.
2020
Stock OptionsRestricted StockPerformance Vested
Restricted Stock Units
OptionsWeighted Average Exercise PriceWeighted
Average
Remaining Contractual
Life
SharesWeighted
Average Grant
Date Fair Value
SharesWeighted
Average Grant
Date Fair Value
Outstanding as of January 1, 2020873,895 $61.69 312,097 $75.23 330,716 $70.03 
Granted158,620 91.28 158,133 90.18 170,471 134.26 
Performance-based leveraging*— — — — 30,116 60.68 
Exercised/vested(209,209)49.17 (128,931)69.80 (176,471)58.68 
Expired— — — — (16,117)60.50 
Forfeited(3,696)91.28 (36,860)81.98 (16,963)82.25 
Outstanding as of December 31, 2020819,610 $70.48 4.2 years304,439 $84.48 321,752 $109.25 
Options exercisable as of December 31, 2020480,255 $60.70 2.5 years
* PVRSU units outstanding have been increased by 30,116 units during the year ended December 31, 2020, due to the Company exceeding the targeted performance conditions contained in PVRSU's granted in prior periods.
Schedule of Pre-Tax Stock-Based Compensation Expenses and Associated Income Tax Benefits
The components of the Company’s pretax stock-based compensation expense and associated income tax benefits are as follows:
For the Year Ended December 31,
(in thousands)202220212020
Stock options$4,674 $3,396 $1,975 
Restricted stock14,349 9,281 8,731 
Performance vested restricted stock units21,436 10,703 (3,466)
Total share-based compensation expense$40,459 $23,380 $7,241 
Schedule of Unrecognized Compensation Cost, Nonvested Awards The total unrecognized compensation costs related to stock-based awards that have not yet vested and the related weighted average amortization period over which the costs are to be recognized as of December 31, 2022 are as follows:
(in thousands)Unrecognized Compensation Expense on Unvested AwardsWeighted Average Remaining Amortization Period
Stock options$10,528 3.0 years
Restricted stock37,634 3.6 years
Performance vested restricted stock units28,545 2.5 years
Total$76,707