Consolidated Balance Sheet Details - Property and Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Property and equipment	$ 19,822	$ 19,782
Less accumulated depreciation	(6,261)	(5,192)
Property and equipment, net	13,561	14,590
Depreciation	1,599	1,584	1,428
Machinery, equipment and tooling [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	12,325	11,902
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	5,068	5,416
Computer equipment and software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	961	1,122
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	783	780
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 685	$ 562

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived 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, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived 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, furniture and fixtures, and computer equipment.

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