Balance Sheet Components (Property) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Property and Equipment, net
Property and equipment, gross	$ 27,208	$ 27,208	$ 24,168
Less: Accumulated depreciation and amortization	(13,216)	(13,216)	(9,594)
Total Property and Equipment, net	13,992	13,992	14,574
Impairment of assets		1,258
Machinery and equipment
Property and Equipment, net
Property and equipment, gross	21,877	21,877	18,632
Impairment of assets	600	600
Asset held for sale	500	500
Furniture and fixtures
Property and Equipment, net
Property and equipment, gross	216	$ 216	217
Useful Life		3 years
Software
Property and Equipment, net
Property and equipment, gross	1,876	$ 1,876	700
Useful Life		3 years
Leasehold improvements
Property and Equipment, net
Property and equipment, gross	1,687	$ 1,687	1,036
Construction-in-process
Property and Equipment, net
Property and equipment, gross	$ 1,552	$ 1,552	$ 3,583
Minimum \| Machinery and equipment
Property and Equipment, net
Useful Life		3 years
Maximum \| Machinery and equipment
Property and Equipment, net
Useful Life		5 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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