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Condensed Consolidated Financial Statement Details (Tables)

3 Months Ended

Mar. 31, 2017

Property, Plant and Equipment [Abstract]

Schedule of Inventory

	March 31, 2017				December 31, 2016
	(in thousands)
Raw materials	$	7,379			$	6,669
Finished goods	9,130				8,401
Total inventory	$	16,509			$	15,070

Schedule of Property and Equipment

	Useful Life		March 31, 2017				December 31, 2016
	(in years)		(in thousands)
Equipment	1-3		$	43,530			$	41,815
Software	1-3		3,816				3,801
Furniture and fixtures	1-3		865				865
Leasehold improvements	2-8		2,724				2,724
Construction in progress			—				258
Property and equipment, gross			50,935				49,463
Less: accumulated depreciation			(42,804		)		(41,244		)
Property and equipment, net			$	8,131			$	8,219

Schedule of Acquired Intangible Assets

Purchased intangible assets, net, consisted of the following (in thousands):

	March 31, 2017												December 31, 2016
	Cost				Accumulated Amortization				Net				Cost				Accumulated Amortization				Net
Developed technology	$	5,050			$	(758	)		$	4,292			$	5,050			$	(505	)		$	4,545
Patents	2,936				(956		)		1,980				2,936				(848		)		2,088
Total	$	7,986			$	(1,714	)		$	6,272			$	7,986			$	(1,353	)		$	6,633

Schedule of Future Amortization Expense for Purchased Finite-lived Intangible Assets

Future amortization expense for purchased intangible assets as of March 31, 2017 is as follows (in thousands):

Fiscal Year
Remainder of 2017		$	1,082
2018		1,442
2019		1,442
2020		1,442
2021		864
		$	6,272

Schedule of Accrued Liabilities

	March 31, 2017				December 31, 2016
	(in thousands)
Accrued compensation and benefits	$	20,852			$	22,326
Accrued tax liabilities	2,894				3,340
Other	6,141				5,859
Total accrued liabilities	$	29,887			$	31,525

Schedule of Deferred Revenue

	March 31, 2017				December 31, 2016
	(in thousands)
Deferred revenue:
Products	$	3,355			$	4,182
Services	89,750				88,726
Total deferred revenue	93,105				92,908
Less: current portion	(58,780		)		(61,334		)
Non-current portion	$	34,325			$	31,574

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