Equity - Recognized Stock-Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement, Noncash Expense [Abstract]
Share-based compensation expense	$ 12,064	$ 14,768	$ 21,195
Income tax benefit	(3,081)	(3,803)	(5,345)
Total share-based compensation, net of tax benefit	8,983	10,965	15,850
Cost of sales
Share-based Payment Arrangement, Noncash Expense [Abstract]
Share-based compensation expense	477	705	539
Research and development
Share-based Payment Arrangement, Noncash Expense [Abstract]
Share-based compensation expense	265	584	604
Selling, general and administrative
Share-based Payment Arrangement, Noncash Expense [Abstract]
Share-based compensation expense	$ 11,322	$ 13,479	$ 20,052