Restructuring (Tables)

12 Months Ended

Dec. 31, 2017

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 for the years presented (in thousands):

	Year Ended December 31,
	2017		2016		2015
Cost of revenue	$	—	$	—	$	1,066
Research and development		2,347		124		14,081
Sales and marketing		149		—		787
General and administrative		688		1,814		20,547
Total restructuring charges	$	3,184	$	1,938	$	36,481

Summary of Significant Restructuring Plan Activity Related To Employees And Other Charges

Significant restructuring activities related to the Company’s employees and other charges, summarized by plan, are presented in the table below (in thousands):

	Q4 2017			Q3 2017			Q2 2017			Q2 2015
	Restructuring Plan			Restructuring Plan			Restructuring Plan			Restructuring Plan			Total
Restructuring liability – December 31, 2015	$	—		$	—		$	—		$	26,406		$	26,406
Restructuring expense and adjustments		—			—			—			926			926
Cash payments		—			—			—			(7,944	)		(7,944	)
Restructuring liability – December 31, 2016		—			—			—			19,388			19,388
Restructuring expense and adjustments		1,466			918			1,242			(451	)		3,175
Cash payments		(1,095	)		(911	)		(1,242	)		(4,785	)		(8,033	)
Restructuring liability – December 31, 2017	$	371		$	7		$	—		$	14,152		$	14,530
Cumulative costs to date, as of December 31, 2017	$	1,466		$	918		$	1,242		$	34,324		$	37,950
Total costs expected to be incurred, as of    December 31, 2017	$	2,610		$	920		$	1,252		$	34,324		$	39,106