Restructuring (Tables)

6 Months Ended

Jun. 30, 2018

Restructuring [Abstract]

Schedule of changes in the restructuring liability

				Equity-Based
				Compensation and			Product-Related
	Severance			Professional Fees			and Other			Total
Restructuring expense	$	5,287	(1)	$	7,071	(2)	$	7,602	(3)	$	19,960

(1)For the three months ended June 30, 2018, we incurred expenses of $3,039. As of June 30, 2018, the outstanding liability for accrued but unpaid severance expense was $2,863, which is included in “Accounts payable and accrued liabilities” line item of the consolidated balance sheets.

(2)For the three months ended June 30, 2018, we incurred expenses of $5,135. As of June 30, 2018, there was no outstanding liability associated with this cost category.

(3)Product-related and other expenses primarily relate to impairment write-downs of depreciated property as well as losses incurred on the sale of equipment. For the three months ended June 30, 2018, we incurred expenses of $3,256. As of June 30, 2018, there was no outstanding liability associated with this cost category.