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Share-Based Payments (Tables)
 12 Months Ended
Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Stock-based Compensation Expense
Stock-based compensation costs included in the consolidated statements of operations are presented below:
 
Year Ended December 31,
 
2017
 
2016
 
2015
Cost of products
$
116

 
$
81

 
$
95

Cost of services
322

 
274

 
354

Research and development
9,336

 
9,251

 
8,614

Selling, general and administrative
31,802

 
32,596

 
29,604

Total
$
41,576

 
$
42,202

 
$
38,667
Schedule of Stock Option Activity
Stock option activity was as follows:
 
Number of Shares
 
Weighted Average Exercise Price
 
Weighted Average Remaining Contractual Term (Years)
Balances at December 31, 2014
8,323,544

 
$
22.59

 
8.64
Granted
5,051,500

 
45.82

 
 
Adjustment due to dividend (Note 14)
312,795

 
25.40

 
 
Exercised
(1,029,291
)
 
(15.16
)
 
 
Forfeited
(1,610,335
)
 
(26.75
)
 
 
Expired
(4,685
)
 
(28.29
)
 
 
Balances at December 31, 2015
11,043,528

 
32.66

 
8.49
Granted
4,644,860

 
29.39

 
 
Exercised
(1,210,840
)
 
(15.83
)
 
 
Forfeited
(2,760,809
)
 
(40.34
)
 
 
Expired
(76,356
)
 
(37.81
)
 
 
Balances at December 31, 2016
11,640,383

 
31.25

 
8.21
Granted
3,920,950

 
21.47

 
 
Adjustment due to dividend (Note 14)
46,766

 
31.11

 
 
Exercised
(149,429
)
 
(6.37
)
 
 
Forfeited
(3,797,105
)
 
(28.37
)
 
 
Expired
(278,818
)
 
(33.18
)
 
 
Balances at December 31, 2017
11,382,747

 
28.99

 
7.32
Exercisable at December 31, 2017
5,306,697

 
29.96

 
6.14
Summary of Information About Stock Options Outstanding
The following table summarizes additional information about stock options outstanding as of December 31, 2017:
 
 
 
 
Options Outstanding
 
Options Exercisable
Range of Exercise Prices
 
Number of Options
 
Weighted Average Exercise Price
 
Weighted Average Remaining Life (Years)
 
Aggregate Intrinsic Value
 
Number of Options
 
Weighted Average Exercise Price
 
Weighted Average Remaining Life (Years)
 
Aggregate Intrinsic Value
$
2.64

—
$
9.30

 
453,371

 
$
7.06

 
3.94
 
$
2,020

 
453,371

 
$
7.06

 
3.94
 
$
2,020

$
12.50

—
$
21.38

 
3,158,121

 
20.58

 
8.74
 
—

 
456,942

 
19.52

 
7.13
 
—

$
21.43

—
$
28.81

 
3,399,721

 
25.55

 
6.91
 
—

 
1,804,401

 
25.86

 
5.69
 
—

$
28.88

—
$
40.99

 
2,751,716

 
32.07

 
6.70
 
—

 
1,732,250

 
31.51

 
6.32
 
—

$
41.41

—
$
65.08

 
1,619,818

 
53.52

 
7.42
 
—

 
859,733

 
53.07

 
7.38
 
—

 
 
 
 
11,382,747

 
$
28.99

 
7.32
 
$
2,020

 
5,306,697

 
$
29.96

 
6.14
 
$
2,020

The following table summarizes additional information about stock options outstanding as of December 31, 2016:
 
 
 
 
Options Outstanding
 
Options Exercisable
Range of Exercise Prices
 
Number of Options
 
Weighted Average Exercise Price
 
Weighted Average Remaining Life (Years)
 
Aggregate Intrinsic Value
 
Number of Options
 
Weighted Average Exercise Price
 
Weighted Average Remaining Life (Years)
 
Aggregate Intrinsic Value
$
2.65

—
$
9.34

 
562,951

 
$
6.23

 
4.13
 
$
10,172

 
525,755

 
$
6.01

 
3.97
 
$
9,615

$
15.21

—
$
27.19

 
2,785,705

 
23.47

 
8.54
 
4,797

 
684,704

 
21.07

 
7.29
 
2,237

$
27.21

—
$
29.68

 
3,147,242

 
29.30

 
7.53
 
—

 
1,400,707

 
29.35

 
7.31
 
—

$
29.70

—
$
42.22

 
3,590,423

 
32.89

 
9.09
 
—

 
345,274

 
37.06

 
6.85
 
—

$
43.99

—
$
65.34

 
1,554,062

 
54.40

 
8.43
 
—

 
461,595

 
53.06

 
8.33
 
—

 
 
 
 
11,640,383

 
$
31.25

 
8.21
 
$
14,969

 
3,418,035

 
$
28.09

 
6.88
 
$
11,852