Note 4 - Property and Equipment (Detail) - Property and Equipment (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Property and equipment at cost	$ 9,760	$ 9,840
Less: accumulated depreciation	(7,997)	(8,040)
Property and equipment, net	1,763	1,800
Equipment [Member]
Property and equipment at cost	5,885	5,963
Tooling [Member]
Property and equipment at cost	2,598	2,600
Furniture and Fixtures [Member]
Property and equipment at cost	132	132
Software [Member]
Property and equipment at cost	450	462
Leasehold Improvements [Member]
Property and equipment at cost	629	633
Construction in Progress [Member]
Property and equipment at cost	$ 66	$ 50

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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