Restructuring (Tables)

6 Months Ended

Jun. 30, 2018

Restructuring And Related Activities [Abstract]

Summary of Net Restructuring Charges Within Consolidated Statement of Operation

We recorded the following net restructuring charges within our consolidated statements of operations (in thousands):

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2018			2017		2018		2017
Cost of revenue	$	—		$	—	$	27	$	—
Research and development		(109	)		1,265		78		333
General and administrative		509			157		766		244
Total restructuring charges	$	400		$	1,422	$	871	$	577

Summary of Restructuring Plan Activity

Restructuring activities, summarized by plan, are presented in the table below (in thousands):

	Q4 2017			Q2 2015			Other
	Restructuring Plan			Restructuring Plan			Restructuring Plans			Total
Restructuring liability – December 31, 2017	$	371		$	14,152		$	7		$	14,530
Restructuring expense and adjustments		770			76			25			871
Cash payments		(756	)		(1,727	)		(32	)		(2,515	)
Restructuring liability – June 30, 2018	$	385		$	12,501		$	—		$	12,886
Cumulative costs to date, as of June 30, 2018	$	2,236		$	34,400		$	2,195		$	38,831
Total costs expected to be incurred, as of June 30, 2018	$	2,252		$	34,400		$	2,195		$	38,847