Equity-Based Compensation - Equity-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total equity-based compensation expense	$ 3,785	$ 4,207
Income tax effect	0	0
After-tax effect of equity-based compensation expense	3,785	4,207
Cost of product sales
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total equity-based compensation expense	203	202
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total equity-based compensation expense	70	680
Selling, general and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total equity-based compensation expense	$ 3,512	3,325
Restructuring Charges
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total equity-based compensation expense		$ 700