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Stock-Based Compensation Plans (Tables)
12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Stock-Based Compensation Expense

Total stock-based compensation expense was as follows:

 

Year Ended December 31,

 

 

2022

 

 

2021

 

 

2020

 

 

(In thousands)

 

Employees:

 

 

 

 

 

 

 

 

Restricted stock and performance shares

$

24,593

 

 

$

23,041

 

 

$

21,310

 

Stock options

 

3,583

 

 

 

2,961

 

 

 

3,100

 

 

 

28,176

 

 

 

26,002

 

 

 

24,410

 

Non-employee directors:

 

 

 

 

 

 

 

 

Restricted stock

 

1,688

 

 

 

1,312

 

 

 

1,203

 

Total stock-based compensation

$

29,864

 

 

$

27,314

 

 

$

25,613

 

 

 

 

 

 

 

 

 

 

Assumptions Used for the Black-Scholes Option-Pricing Model to Determine the Per Share Weighted Average Fair Value for Options Granted The following table represents the assumptions used for the Black-Scholes option-pricing model to determine the per share weighted-average fair value for options granted, excluding the two awards based on the Monte Carlo model discussed below:

 

Year Ended December 31,

 

 

2022

 

 

2021

 

 

2020

 

Expected life (years)

 

5.0

 

 

 

5.0

 

 

 

5.0

 

Risk-free interest rate

 

1.5

%

 

 

0.4

%

 

 

1.6

%

Expected volatility

 

32.6

%

 

 

31.2

%

 

 

26.8

%

Expected dividend yield

 

0.7

%

 

 

0.4

%

 

 

0.6

%

 

 

 

 

 

 

 

 

 

Stock Option Activity

The following table reports stock option activity during the three years ended December 31, 2022 and the intrinsic value as of December 31, 2022:

 

 

Number of Shares

 

 

Weighted-Average Exercise Price ($)

 

 

Remaining Contractual
Term

 

 

Intrinsic Value ($)

 

 

 

 

 

 

 

 

 

 

 

 

(In thousands)

 

Outstanding at December 31, 2019

 

 

550,591

 

 

 

175.16

 

 

 

 

 

 

 

Granted

 

 

13,900

 

 

 

368.10

 

 

 

 

 

 

 

Canceled

 

 

(218

)

 

 

307.52

 

 

 

 

 

 

 

Exercised

 

 

(176,901

)

 

 

84.07

 

 

 

 

 

 

 

Outstanding at December 31, 2020

 

 

387,372

 

 

 

223.60

 

 

 

 

 

 

 

Granted

 

 

17,897

 

 

 

517.88

 

 

 

 

 

 

 

Canceled

 

 

(616

)

 

 

394.77

 

 

 

 

 

 

 

Exercised

 

 

(91,900

)

 

 

107.05

 

 

 

 

 

 

 

Outstanding at December 31, 2021

 

 

312,753

 

 

 

274.35

 

 

 

 

 

 

 

Granted

 

 

23,904

 

 

 

352.15

 

 

 

 

 

 

 

Canceled

 

 

(1,646

)

 

 

421.08

 

 

 

 

 

 

 

Exercised

 

 

(28,758

)

 

 

157.08

 

 

 

 

 

 

3,597

 

Outstanding at December 31, 2022

 

 

306,253

 

 

 

290.65

 

 

 

1.9

 

 

 

3,971

 

Exercisable at December 31, 2022

 

 

42,119

 

 

 

276.35

 

 

 

1.9

 

 

 

2,259

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Schedule of Estimate, Target and Maximum Performance Share Payouts

The following table reports the Company's performance payout estimates for three-year performance period awards at December 31, 2022 as well as the target and maximum share payouts for each award date granted:

Award Date

2022 Estimate

 

 

Target

 

 

Maximum

 

January 15, 2020

 

11,915

 

 

 

12,298

 

 

 

18,447

 

January 15, 2021

 

8,776

 

 

 

12,185

 

 

 

24,370

 

August 1, 2021

 

969

 

 

 

1,070

 

 

 

2,140

 

January 31, 2022

 

15,701

 

 

 

18,155

 

 

 

36,310

 

March 1, 2022

 

3,447

 

 

 

3,986

 

 

 

7,972

 

 

 

 

 

 

 

 

 

 

Restricted Stock and Performance Share Activity

The following table reports restricted stock and performance share activity during the three years ended December 31, 2022:

 

 

Number of Restricted Shares

 

 

Weighted-Average Grant Date Fair Value

 

 

 

 

 

 

 

 

Outstanding at December 31, 2019

 

 

346,032

 

 

$

154.27

 

Granted

 

 

38,907

 

 

 

 

Performance share pay-out

 

 

19,401

 

 

 

 

Canceled

 

 

(3,480

)

 

 

 

Vested

 

 

(170,213

)

 

 

 

Outstanding at December 31, 2020

 

 

230,647

 

 

$

224.63

 

Granted

 

 

47,142

 

 

 

 

Performance share pay-out

 

 

 

 

 

 

Canceled

 

 

(3,911

)

 

 

 

Vested

 

 

(111,268

)

 

 

 

Outstanding at December 31, 2021

 

 

162,610

 

 

$

316.56

 

Granted

 

 

72,861

 

 

 

 

Performance share pay-out

 

 

 

 

 

 

Canceled

 

 

(8,513

)

 

 

 

Vested

 

 

(64,602

)

 

 

 

Outstanding at December 31, 2022

 

 

162,356

 

 

$

321.04