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Stock-Based Compensation Plans and Employee Benefits (Tables)
12 Months Ended
Dec. 31, 2018
Summary of Fair Values for Stock-based Awards Granted Using Black-Scholes Option Pricing Model

The fair values for option awards granted were estimated at the date of grant using the Black-Scholes option pricing model with the following weighted-average assumptions (no option awards were granted in 2018):

 

 

For the Year Ended December 31,

 

 

 

2017

 

 

2016

 

Weighted-average fair value of grants

 

$

2.07

 

 

$

2.60

 

Risk-free interest rate (range) Based upon the U.S. Treasury Strip

   with a maturity date that approximates the expected term of the award

 

1.8%

 

 

1.1%–1.5%

 

Dividend yield (range) Forecasted dividend yield based on the

   expected life

 

5.2%

 

 

4.5%–5.2%

 

Expected life (range) Derived by referring to actual exercise experience

 

4 years

 

 

4–5 years

 

Expected volatility (range) Derived by using a 50/50 blend of implied

   and historical changes in the Company's historical stock prices over a

   time frame consistent with the expected life of the award

 

19.8%

 

 

20.6%–22.5%

 

 

Summary of Stock Option Activity

The following table reflects the stock option activity described above:

 

 

 

 

 

Weighted-

 

 

Weighted-

Average

 

 

Aggregate

 

 

Number of Options

(Thousands)

 

 

Average

Exercise

Price

 

 

Remaining

Contractual Term

(Years)

 

 

Intrinsic

Value

(Thousands)

 

Balance December 31, 2015

 

1,406

 

 

$

40.58

 

 

 

 

 

 

 

 

 

Granted

 

316

 

 

 

33.48

 

 

 

 

 

 

 

 

 

Exercised

 

(427

)

 

 

23.24

 

 

 

 

 

 

 

 

 

Forfeited

 

(392

)

 

 

58.92

 

 

 

 

 

 

 

 

 

Balance December 31, 2016

 

903

 

 

 

38.32

 

 

 

 

 

 

 

 

 

Granted

 

77

 

 

 

28.86

 

 

 

 

 

 

 

 

 

Exercised

 

(26

)

 

 

14.66

 

 

 

 

 

 

 

 

 

Forfeited

 

(366

)

 

 

44.62

 

 

 

 

 

 

 

 

 

Balance December 31, 2017

 

588

 

 

 

27.64

 

 

 

 

 

 

 

 

 

Granted

 

 

 

 

 

 

 

 

 

 

 

Spin-off adjustment

 

139

 

 

 

 

 

 

 

 

 

 

 

 

 

Exercised

 

(19

)

 

 

9.73

 

 

 

 

 

 

 

 

 

Forfeited

 

(262

)

 

 

32.26

 

 

 

 

 

 

 

 

 

Balance December 31, 2018

 

446

 

 

$

25.71

 

 

 

5.2

 

 

$

27

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Options exercisable at December 31,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2018

 

368

 

 

$

25.86

 

 

 

4.8

 

 

$

27

 

2017

 

398

 

 

 

34.92

 

 

 

4.5

 

 

 

196

 

2016

 

519

 

 

 

40.98

 

 

 

4.5

 

 

 

1,608

 

  

Summary of Characteristics of Options Outstanding

The following table summarizes the characteristics of the options outstanding at December 31, 2018:

 

 

 

Options Outstanding

 

 

Options Exercisable

 

Range of

Exercise Prices

 

Outstanding

at 12/31/18

(Thousands)

 

 

Weighted-Average Remaining

Contractual Life

(Years)

 

 

Weighted-Average

Exercise Price

 

 

Exercisable at 12/31/18

(Thousands)

 

 

Weighted-Average

Exercise Price

 

$0.00$16.50

 

 

33

 

 

 

0.5

 

 

$

12.34

 

 

 

33

 

 

$

12.34

 

$16.51–$27.50

 

 

327

 

 

 

5.5

 

 

 

25.65

 

 

 

249

 

 

 

25.86

 

$27.51–$31.11

 

 

86

 

 

 

5.7

 

 

 

31.11

 

 

 

86

 

 

 

31.11

 

 

 

 

446

 

 

 

5.2

 

 

$

25.71

 

 

 

368

 

 

$

25.86

 

Activities for Unvested Stock Option Awards

The following table reflects the activity for unvested stock option awards for the year ended December 31, 2018:

 

 

Options

(Thousands)

 

 

Weighted-Average

Grant Date

Fair Value

 

Unvested at December 31, 2017

 

191

 

 

$

2.63

 

Granted

 

 

 

Spin-off adjustment

 

44

 

 

 

 

 

Vested

 

(125

)

 

 

2.83

 

Forfeited

 

(32

)

 

 

2.61

 

Unvested at December 31, 2018

 

78

 

 

$

2.31

 

Summary of Activity of Employee Stock Option Exercises

The following table summarizes the activity of employee stock option exercises that are primarily settled with newly issued common shares or with treasury shares, if available (in millions):  

 

 

For the Year Ended December 31,

 

 

2018

 

 

2017

 

 

2016

 

Cash received for exercise price

$

0.2

 

 

$

0.4

 

 

$

9.9

 

Intrinsic value

 

0.1

 

 

 

0.2

 

 

 

6.0

 

VSEP Grants [Member]  
Activities for Unvested Restricted Stock Awards

The following table reflects the activity for the unvested awards pursuant to all restricted stock grants and grants pursuant to the 2013 VSEP plans for the year ended December 31, 2018:

 

 

Awards

(Thousands)

 

 

Weighted-Average

Grant Date

Fair Value

 

Unvested at December 31, 2017

 

322

 

 

$

23.45

 

Granted

 

344

 

 

 

13.01

 

Spin-off adjustment

 

69

 

 

 

 

 

Vested

 

(162

)

 

 

24.50

 

Forfeited

 

(12

)

 

 

22.31

 

Unvested at December 31, 2018

 

561

 

 

$

16.77