Restructuring (Tables)

12 Months Ended

Dec. 31, 2017

Restructuring and Related Activities [Abstract]

Schedule of restructuring and related costs

The following table summarizes the restructuring costs recognized during the years ended December 31, 2017, 2016, and 2015 (in thousands):

	2017 Restructuring													2015 Restructuring
	Property and equipment			Employee costs			Inventory				Other costs			Employee Costs			Other costs			Total
Balance as of January 1, 2015	$	—		$	—		$	—			$	—		$	—		$	—		$	—
Restructuring and other charges	—			—			—				—			1,043			2,494			3,537
Cash payments	—			—			—				—			(577		)	—			(577		)
Non-cash adjustments [2]	—			—			—				—			—			(435		)	(435		)
Balances as of December 31, 2015[1]	—			—			—				—			466			2,059			2,525
Restructuring and other charges	—			—			—			—	—			61			229			290
Cash payments	—			—			—				—			(527		)	(686		)	(1,213		)
Balance as of December 31, 2016[1]	—			—			—				—			—			1,602			1,602
Restructuring and other charges	8,233			5,851			1,475				1,226			—			181			16,966
Cash payments	(250		)	(4,658		)	—				(786		)	—			(390		)	(6,084		)
Non-cash adjustments [2]	(6,933		)	(814		)	(1,475		)		(23		)	—			—			(9,245		)
Balance as of December 31, 2017[1]	$	1,050		$	379		$	—			$	417		$	—		$	1,393		$	3,239
[1] The balances as of December 31, 2017, 2016, and 2015 are recorded in accrued liabilities and other non-current liabilities.
[2] Non-cash adjustments include depreciation and amortization of property and equipment (primarily capitalized software development costs and manufacturing equipment) and intangible assets, inventory markdowns, stock-based compensation, and other non-cash costs incurred as part of the restructuring.