Restructuring (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring expense		$ 19,960
Severance
Restructuring Cost and Reserve [Line Items]
Restructuring expense		5,287
Outstanding liability	$ 2,863	2,863
Restructuring expenses	3,039
Equity Based Compensation and Professional Fees
Restructuring Cost and Reserve [Line Items]
Restructuring expense		7,071
Outstanding liability	0	0
Restructuring expenses	5,135
Product Related and Other
Restructuring Cost and Reserve [Line Items]
Restructuring expense		7,602
Outstanding liability	0	0
Restructuring expenses	3,256
Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring expenses incurred	5,000	5,000
Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring expenses incurred	$ 10,000	$ 10,000