Restructuring (Tables)

3 Months Ended

Mar. 31, 2018

Restructuring [Abstract]

Schedule of changes in the restructuring liability

			Equity Based
			Compensation and		Product Related
	Severance		Professional Fees		and Other		Total
Balance as of December 31, 2017	$	—	$	—	$	—	$	—
Expensed but not paid		1,738		1,936		4,346		8,020
Cash paid		510		—		—		510
Balance as of March 31, 2018	$	2,248	$	1,936	$	4,346	$	8,530