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Share-Based Payments (Tables)
 6 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Stock-Based Compensation Costs
Stock-based compensation costs included in the consolidated statements of operations are presented below:
 
Three Months Ended 
 June 30,
 
Six Months Ended 
 June 30,
 
2017
 
2016
 
2017
 
2016
Cost of products
$
30

 
$
20

 
$
56

 
$
40

Cost of services
82

 
70

 
160

 
138

Research and development
2,442

 
2,178

 
4,635

 
4,743

Selling, general and administrative
9,444

 
4,383

 
15,041

 
14,918

Total
$
11,998

 
$
6,651

 
$
19,892

 
$
19,839
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, 2016
11,640,383

 
$
31.25

 
8.21
Granted
3,672,950

 
21.46

 
 
Adjustment due to dividend (Note 14)
46,766

 
31.11

 
 
Exercised
(39,048
)
 
(16.65
)
 
 
Forfeited
(2,375,366
)
 
(30.22
)
 
 
Expired
(124,134
)
 
(31.95
)
 
 
Balances at June 30, 2017
12,821,551

 
28.56

 
8.04
Exercisable at June 30, 2017
4,545,590

 
28.59

 
6.69