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Stock Plans - Recognized Share-based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Recognized share-based compensation
Share based Compensation	$ 15,270	$ 16,074	$ 24,396
Total	15,270	16,074	24,396
Cost of sales
Recognized share-based compensation
Total	1,903	1,885	2,505
Research and development
Recognized share-based compensation
Total	3,340	3,611	2,957
Selling, general and administrative
Recognized share-based compensation
Total	9,630	9,417	12,851
Restructuring
Recognized share-based compensation
Total	$ 397	$ 1,161	1,880
Acquisition costs
Recognized share-based compensation
Total			$ 4,203

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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-Publisher FASB
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