Restructuring (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 37,943
Severance
Restructuring Cost and Reserve [Line Items]
Restructuring expense	6,910
Equity Based Compensation and Professional Fees
Restructuring Cost and Reserve [Line Items]
Restructuring expense	7,740
Product Related and Other
Restructuring Cost and Reserve [Line Items]
Restructuring expense	23,293
Accounts Payable and Accrued Liabilities | Severance
Restructuring Cost and Reserve [Line Items]
Outstanding liability	400
Accounts Payable and Accrued Liabilities | Product Related and Other
Restructuring Cost and Reserve [Line Items]
Outstanding liability	$ 2,300