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Stock-based Compensation (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity
The following table summarizes information about the Company’s stock option awards during 2021:

Number of
Shares		Weighted-Average
Exercise
Price
Outstanding, January 1, 2021645,605 $49.29 
Granted154,314 52.73 
Exercised(33,305)32.53 
Forfeited— — 
Outstanding, December 31, 2021766,614 50.71 
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range
The following table summarizes information about stock options outstanding at December 31, 2021:

 Options OutstandingOptions Exercisable
Range of
Exercise
Prices		Number
of Shares		Average
Remaining
Life (Years)		Average
Exercise
Price		Number
of Shares		Average
Exercise
Price
$24.24 to $36.31
176,200 3.61$33.11 176,200 $33.11 
$37.13 to $47.04
124,423 4.7845.52 120,808 45.77 
$51.55 to $59.28
263,823 7.8355.43 104,249 59.24 
$59.46 to $66.10
202,168 7.3363.09 106,989 62.43 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions The fair value of each stock option grant on the date of grant was estimated using the Black-Scholes option-pricing model based on the following weighted average assumptions:
202120202019
Risk-free interest rate0.55 %1.45 %2.43 %
Expected life (years)5.55.55.5
Expected volatility40.0 %26.0 %25.0 %
Expected dividend yield1.23 %1.25 %1.43 %
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable
The following table summarizes information about stock options outstanding that are expected to vest and stock options outstanding that are exercisable at December 31, 2021:

Options Outstanding, Expected to VestOptions Outstanding, Exercisable
SharesWeighted-
Average
Exercise
Price		Aggregate
Intrinsic
Value		Weighted-
Average
Remaining
Term (Years)		SharesWeighted-
Average
Exercise
Price		Aggregate
Intrinsic
Value		Weighted-
Average
Remaining
Term (Years)
754,648$50.71 $2,516 6.24508,246 $47.65 $2,522 5.04
Schedule of Share-based Compensation, Restricted Stock Units, Activity
The following table summarizes information about the Company’s Rights during 2021:

Service Based RightsService and Performance Based RightsService and Market Based Rights
Number of UnitsWeighted-Average Grant Date Fair ValueNumber of UnitsWeighted-Average Grant Date Fair ValueNumber of UnitsWeighted-Average Grant Date Fair Value
Outstanding, January 1, 2021227,425 $52.59 148,426 $61.71 74,213 $100.47 
Granted162,698 49.34 71,265 54.42 35,648 84.86 
Forfeited(14,258)56.53 (2,063)47.23 (1,030)94.55 
Additional Earned— — (36,048)59.28 (14,550)88.98 
Issued(116,758)47.23 (7,383)59.28 (7,166)88.98 
Outstanding, December 31, 2021259,107 174,197 87,115