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Stock Plans (Tables)
12 Months Ended
Dec. 31, 2015
Stock Plans  
Schedule of share-based compensation expense

 

 

 

 

Year ended December 31,

 

 

 

 

 

2015

 

 

 

2014

 

 

 

2013

 

 

 

 

 

(in thousands)

 

Cost of sales

 

 

 

$

2,495

 

 

 

$

2,456

 

 

 

$

1,446

 

Selling, general, and administrative

 

 

 

11,474

 

 

 

11,859

 

 

 

8,339

 

Research and development

 

 

 

4,031

 

 

 

4,498

 

 

 

3,347

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Share-based compensation expense, before tax

 

 

 

18,000

 

 

 

18,813

 

 

 

13,132

 

Income tax benefit(1)

 

 

 

(6,048

)

 

 

(6,011

)

 

 

(4,367

)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net share-based compensation expense

 

 

 

$

11,952

 

 

 

$

12,802

 

 

 

$

8,765

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(1) The income tax benefit presented for 2015 and 2014 has not been realized in the Consolidated Statements of Operations due to the Company’s full valuation allowance.

 

Summary of unrecognized share-based compensation costs

 

Unrecognized share-based compensation costs at December 31, 2015 are summarized below:

 

 

 

 

 

Unrecognized

 

 

 

Weighted

 

 

 

 

 

Share-Based

 

 

 

Average Period

 

 

 

 

 

Compensation

 

 

 

Expected to be

 

 

 

 

 

Costs

 

 

 

Recognized

 

 

 

 

 

(in thousands)

 

 

 

(in years)

 

Stock option awards

 

 

 

$

4,252 

 

 

 

1.3 

 

Restricted stock units

 

 

 

5,581 

 

 

 

2.0 

 

Restricted stock awards

 

 

 

21,523 

 

 

 

2.8 

 

Performance share units

 

 

 

5,912 

 

 

 

3.1 

 

 

 

 

 

 

 

 

 

 

 

Total unrecognized share-based compensation cost

 

 

 

$

37,268 

 

 

 

2.6 

 

 

 

 

 

 

 

 

 

 

 

 

 

Schedule of options, vested and expected to vest

 

At December 31, 2015, options outstanding that have vested and are expected to vest were as follows:

 

 

 

 

 

 

Weighted

 

 

 

 

Number

 

Weighted

 

Average

 

Aggregate

 

 

of

 

Average

 

Remaining

 

Intrinsic

 

 

Shares

 

Exercise Price

 

Contractual Life

 

Value

 

 

 

(in thousands)

 

 

 

 

 

(in years)

 

 

(in thousands)

 

Vested

 

1,609 

 

 

$

32.95 

 

 

5.3 

 

 

$

1,671 

 

Expected to vest

 

435 

 

 

32.75 

 

 

6.6 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total

 

2,044 

 

 

$

32.91 

 

 

5.6 

 

 

$

1,671 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of stock option awards activity

 

 

 

 

Weighted

 

 

 

Number of

 

Average

 

 

 

Shares

 

Exercise Price

 

 

 

 

(in thousands)

 

 

 

 

Outstanding at December 31, 2012

 

 

2,322

 

 

$

28.63

 

Granted

 

 

539

 

 

32.68

 

Exercised

 

 

(149

)

 

14.74

 

Expired or forfeited

 

 

(114

)

 

35.22

 

 

 

 

 

 

 

 

 

Outstanding at December 31, 2013

 

 

2,598

 

 

$

29.98

 

Granted

 

 

509

 

 

33.05

 

Exercised

 

 

(561

)

 

23.88

 

Expired or forfeited

 

 

(155

)

 

36.22

 

 

 

 

 

 

 

 

 

Outstanding at December 31, 2014

 

 

2,391

 

 

$

31.65

 

Granted

 

 

17

 

 

30.22

 

Exercised

 

 

(192

)

 

12.95

 

Expired or forfeited

 

 

(152

)

 

38.15

 

 

 

 

 

 

 

 

 

Outstanding at December 31, 2015

 

 

2,064

 

 

$

32.91

 

 

 

 

 

 

 

 

 

 

 

Summary of information about stock options outstanding

 

The following table summarizes stock option information at December 31, 2015:

 

 

 

Options Outstanding

 

Options Exercisable

 

 

 

 

 

 

 

 

Weighted

 

 

 

 

 

 

 

 

 

 

Weighted

 

 

 

 

Range of

 

 

 

 

Aggregate

 

Average

 

Weighted

 

 

 

 

Aggregate

 

Average

 

Weighted

 

Exercise

 

 

 

 

Intrinsic

 

Remaining

 

Average

 

 

 

 

Intrinsic

 

Remaining

 

Average

 

Prices

 

Shares

 

Value

 

Contractual Life

 

Exercise Price

 

Shares

 

Value

 

Contractual Life

 

Exercise Price

 

 

 

(in thousands)

 

(in thousands)

 

(in years)

 

 

 

(in thousands)

 

(in thousands)

 

(in years)

 

 

 

 

$8.82 – $20.80

 

 

199 

 

 

$

1,671 

 

 

0.5 

 

 

$

12.15 

 

 

199 

 

 

$

1,671 

 

 

0.5 

 

 

$

12.15 

 

$24.40 – $36.97

 

 

1,497 

 

 

 

 

6.2 

 

 

32.55 

 

 

1,088 

 

 

 

 

6.1 

 

 

32.69 

 

$37.22 – $51.70

 

 

368 

 

 

 

 

5.9 

 

 

45.57 

 

 

322 

 

 

 

 

5.7 

 

 

46.65 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2,064 

 

 

$

1,671 

 

 

5.6 

 

 

$

32.91 

 

 

1,609 

 

 

$

1,671 

 

 

5.3 

 

 

$

32.95 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Assumptions used to estimate fair value of options granted

 

 

Year ended December 31,

 

 

 

2015

 

2014

 

2013

 

Weighted average fair value

 

  $

10.58 

 

  $

11.58 

 

  $

13.47 

 

Dividend yield

 

0% 

 

0% 

 

0% 

 

Expected volatility factor(1)

 

44% 

 

44% 

 

49% 

 

Risk-free interest rate(2)

 

1.18% 

 

1.19% 

 

1.27% 

 

Expected life (in years)(3)

 

3.9 

 

3.9 

 

4.5 

 

 

 


 

 

(1)

Expected volatility is measured using historical daily price changes of the Company’s stock over the respective expected term of the options and the implied volatility derived from the market prices of the Company’s traded options.

 

 

(2)

The risk-free rate for periods within the contractual term of the stock options is based on the U.S. Treasury yield curve in effect at the time of grant.

 

 

(3)

The expected life is the number of years the Company estimates that options will be outstanding prior to exercise. The Company’s computation of expected life was determined using a lattice-based model incorporating historical post vest exercise and employee termination behavior.

 

Summary of information on options exercised

 

 

Year ended December 31,

 

 

 

2015

 

2014

 

2013

 

 

 

(in thousands)

 

Cash received from options exercised

 

  $

2,233 

 

  $

12,056 

 

  $

2,199 

 

Intrinsic value of options exercised

 

  $

2,089 

 

  $

8,390 

 

  $

2,509 

 

 

Summary of RSA, RSU, PSA, and PSU awards activity

 

 

 

 

Weighted

 

 

 

 

 

Average

 

 

 

Number of

 

Grant Date

 

 

 

Shares

 

Fair Value

 

 

 

(in thousands)

 

 

 

Outstanding at December 31, 2012

 

 

693

 

 

$

36.11

 

Granted

 

 

798

 

 

33.16

 

Released

 

 

(207

)

 

32.44

 

Forfeited

 

 

(126

)

 

34.33

 

 

 

 

 

 

 

 

 

Outstanding at December 31, 2013

 

 

1,158

 

 

$

34.93

 

Granted

 

 

395

 

 

34.18

 

Released

 

 

(183

)

 

38.65

 

Forfeited

 

 

(133

)

 

33.66

 

 

 

 

 

 

 

 

 

Outstanding at December 31, 2014

 

 

1,237

 

 

$

34.27

 

Granted

 

 

672

 

 

30.33

 

Released

 

 

(389

)

 

35.65

 

Forfeited

 

 

(122

)

 

34.46

 

 

 

 

 

 

 

 

 

Outstanding at December 31, 2015

 

 

1,398

 

 

$

31.97