Composition of Certain Financial Statement Captions (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment, Gross	$ 451	$ 443
Less: Accumulated depreciation	(347)	(318)
Property, Plant and Equipment, Net	104	125
Computer and office equipment [Member]
Property, Plant and Equipment, Gross	100	123
Leasehold improvements [Member]
Property, Plant and Equipment, Gross	26	26
Tooling and product design [Member]
Property, Plant and Equipment, Gross	$ 325	$ 294

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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