| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | Period [Axis] |
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2016-01-01 - 2016-12-31 |
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Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | |
Schedule of Weighted Average Assumptions Using the Black-Scholes Option Pricing Model |
The fair value of each option granted is estimated on the date of grant using the Black‑Scholes option‑pricing model with the following weighted average assumptions:
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Year ended December 31, |
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2016 |
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2015 |
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2014 |
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Employees and directors: |
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Estimated volatility% |
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44.63 |
% |
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|
46.68 |
% |
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51.26 |
% |
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Expected life in years |
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5.99 |
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5.88 |
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5.84 |
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Risk free interest rate% |
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1.46 |
% |
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|
1.74 |
% |
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|
1.79 |
% |
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Dividend yield |
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— |
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— |
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— |
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Schedule of Share-based Compensation Expense |
The following table summarizes share-based compensation expense included within the Company’s consolidated statements of operations:
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Year ended December 31, |
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(In thousands) |
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2016 |
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2015 |
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2014 |
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Research and development |
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$ |
10,610 |
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$ |
8,474 |
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$ |
5,939 |
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Selling, general and administrative |
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25,777 |
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24,992 |
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23,498 |
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Total |
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$ |
36,387 |
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|
$ |
33,466 |
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$ |
29,437 |
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Schedule of Stock Option Activity |
A summary of share‑based compensation activity for the year ended December 31, 2016 is presented below:
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Number
of Shares
(In thousands) |
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Weighted Average
Exercise Price |
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Weighted Average
Remaining
Contractual Term |
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Intrinsic
Value
(In thousands) |
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Balance at December 31, 2013 |
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6,486 |
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$ |
25.61 |
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Granted |
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2,352 |
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36.56 |
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Forfeited and expired |
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(306 |
) |
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32.40 |
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Exercised |
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(746 |
) |
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21.46 |
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Balance at December 31, 2014 |
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7,786 |
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$ |
29.05 |
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Granted |
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1,651 |
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35.45 |
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Forfeited and expired |
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(343 |
) |
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34.85 |
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Exercised |
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(871 |
) |
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20.77 |
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Balance at December 31, 2015 |
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8,223 |
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$ |
30.97 |
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Granted |
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1,766 |
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31.55 |
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Forfeited and expired |
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(723 |
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34.21 |
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Exercised |
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(194 |
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17.69 |
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Balance at December 31, 2016 |
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9,072 |
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$ |
31.11 |
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6.3 |
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$ |
70,680 |
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Vested and expected to vest at December 31, 2016 |
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8,994 |
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$ |
31.10 |
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6.3 |
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$ |
70,032 |
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Vested and exercisable at December 31, 2016 |
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6,152 |
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$ |
30.00 |
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|
5.2 |
|
$ |
59,612 |
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Schedule of Stock Options Activity, By Exercise Price Range |
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Options Outstanding |
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Options Exercisable |
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Range of exercise price |
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Outstanding
as of
December 31,
2016
(In thousands) |
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Weighted-
average
remaining
contractual life |
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Weighted-
average
exercise price |
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Exercisable
as of
December 31,
2016
(In thousands) |
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Weighted-
average
exercise price |
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$15.91 - $26.35 |
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2,335 |
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4.0 |
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$ |
22.97 |
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2,102 |
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$ |
22.82 |
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$26.38 - $30.46 |
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1,879 |
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7.0 |
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29.27 |
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1,200 |
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29.64 |
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$30.49 - $35.53 |
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2,395 |
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6.9 |
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33.83 |
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1,459 |
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33.23 |
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$35.58 - $39.38 |
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2,278 |
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7.3 |
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37.28 |
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1,318 |
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37.54 |
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$39.67 - $44.50 |
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|
185 |
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8.1 |
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41.37 |
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|
73 |
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41.62 |
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9,072 |
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6.3 |
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$ |
31.11 |
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|
6,152 |
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$ |
30.00 |
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Schedule of Restricted Stock Activity |
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Restricted Stock |
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Number of Shares
(In thousands) |
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Nonvested at December 31, 2013 |
|
|
421 |
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Granted |
|
|
387 |
|
|
Vested |
|
|
(241 |
) |
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Forfeited |
|
|
(48 |
) |
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Nonvested at December 31, 2014 |
|
|
519 |
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|
Granted |
|
|
205 |
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Vested |
|
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(244 |
) |
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Forfeited |
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(39 |
) |
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Nonvested at December 31, 2015 |
|
|
441 |
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Granted |
|
|
664 |
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Vested |
|
|
(236 |
) |
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Forfeited |
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(244 |
) |
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Nonvested at December 31, 2016 |
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|
625 |
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