Share-Based Payments (Tables)

9 Months Ended

Sep. 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   September 30,				Nine Months Ended   September 30,
	2017		2016		2017		2016
Cost of products	$	30	$	21	$	86	$	61
Cost of services	82		68		242		206
Research and development	2,383		2,236		7,018		6,979
Selling, general and administrative	9,562		8,467		24,603		23,385
Total	$	12,057	$	10,792	$	31,949	$	30,631

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	3,880,950		21.51
Adjustment due to dividend (Note 14)	46,766		31.11
Exercised	(109,971	)	(7.63		)
Forfeited	(2,610,431	)	(29.93		)
Expired	(205,927	)	(33.17		)
Balances at September 30, 2017	12,641,770		28.59			7.86
Exercisable at September 30, 2017	5,313,100		29.85			6.77