Restructuring and Exit Costs (Tables)

12 Months Ended

Dec. 31, 2017

Restructuring and Related Activities [Abstract]

Restructuring and exit costs

The following table summarizes the changes in the liabilities for each of the 2017 restructuring plans, which are recorded in “accrued employee compensation” in the Company’s condensed consolidated balance sheet for the year ended December 31, 2017 (in thousands):

	February 2017 Plan			September 2017 Plan
	Employee Severance Costs
Restructuring plans liability as of December 31, 2016	$	—		$	—
Costs incurred	997			1,275
Amounts paid	(855		)	(431		)
Accruals released	(142		)	(27		)
Restructuring liability as of December 31, 2017	$	—		$	817

The following table summarizes restructuring and exit costs related to the 2015 restructuring plan for the years ended December 31, 2017, 2016 and 2015 (in thousands):

	Employee Severance Costs			Lease Obligation Costs			Other Exit Costs			Total
Restructuring liability as of December 31, 2014	$	—		$	—		$	—		$	—
Costs incurred	1,439			1,208			—			2,647
Restructuring cash payments	(1,010		)	—			—			(1,010		)
Accruals released	(135		)	—			—			(135		)
Lease payments and accretion	—			(165		)	—			(165		)
Restructuring liability as of December 31, 2015	294			1,043			—			1,337
Costs incurred	67			86			298			451
Restructuring cash payments	(207		)	—			(246		)	(453		)
Accruals released	(154		)	—			—			(154		)
Lease payments and accretion	—			(327		)	(52		)	(379		)
Restructuring liability as of December 31, 2016	—			802			—			802
Costs incurred	—			179			—			179
Lease payments and accretion	—			(311		)	—			(311		)
Restructuring liability as of December 31, 2017	$	—		$	670		$	—		$	670