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Stock-based Compensation (Tables)
12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Stock Options, Valuation Assumptions The weighted-average fair value of options granted and the weighted-average assumptions used in the Black-Scholes-Merton option pricing model for such grants were as follows:
202120202019
Dividend Yield— %0.4 %0.3 %
Expected Volatility44.0 %39.4 %36.5 %
Risk-free Interest Rate0.6 %0.9 %2.5 %
Expected Term (in years)4.45.35.3
Weighted-average Fair Value of Stock Options Granted$17.26$13.48$19.59
Summary Information about Stock Options Outstanding
The following table summarizes information about stock options outstanding at December 31, 2021:
 Options OutstandingOptions Exercisable
Range of Exercise
Prices
Number Outstanding
December 31, 2021
Weighted Average Remaining Contractual
Life
(in Years)
Weighted Average
Exercise Price
Number Exercisable
December 31, 2021
Weighted Average
Exercise Price
$20.00-30.00
192,633 4.16$24.14 192,633 $24.14 
  30.01-40.00
133,002 7.6136.33 41,143 36.09 
  40.01-50.00
346,931 7.3546.87 168,147 46.18 
  50.01-60.00
5,304 9.3553.55 — — 
  20.00-60.00
677,870 6.5138.40 401,923 34.59 
Summary of Stock Option Activity
The table below summarizes option activity for the year ended December 31, 2021:
Options
(In Thousands)
Weighted Average
Exercise Price
Weighted Average
Remaining
Contractual Term
(in Years)
Aggregate
Intrinsic Value
(in Thousands)
Weighted
Average Fair
Value
Outstanding at January 1, 2021723 $37.45 
Granted150 47.17 
Forfeited/Expired(115)43.58 
Exercised(80)38.81 
Outstanding at December 31, 2021678 38.40 6.5$5,359 $13.41 
Expected to Vest268 43.89 8.6790 15.85 
Exercisable at December 31, 2021402 34.59 5.44,562 11.71 
Summary of Restricted Stock Activity The following table summarizes information about restricted stock activity during 2021:
Restricted Stock
(In Thousands)
Weighted Average
Fair Value
Non-vested at January 1, 2021460 $37.49 
Granted521 44.44 
Forfeited(86)49.20 
Vested(169)43.31 
Non-vested at December 31, 2021726 43.13 
Summary of Performance Share Units
The following table summarizes information about performance share unit activity during 2021:
Performance Share Units
(In Thousands)
Weighted Average
Fair Value
Non-vested at January 1, 2021296 $39.85 
Granted585 48.58 
Forfeited/Unearned(47)42.21 
Vested(154)43.03 
Non-vested at December 31, 2021680 47.27