Note 4 - Property and Equipment (Detail) - Property and Equipment (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Property and equipment at cost	$ 9,664	$ 9,488
Less: accumulated depreciation	(7,877)	(7,383)
Property and equipment, net	1,787	2,105
Equipment [Member]
Property and equipment at cost	5,847	5,831
Tooling [Member]
Property and equipment at cost	2,481	2,440
Furniture and Fixtures [Member]
Property and equipment at cost	132	129
Computer Software [Member]
Property and equipment at cost	462	431
Leasehold Improvements [Member]
Property and equipment at cost	632	630
Construction in Progress [Member]
Property and equipment at cost	$ 110	$ 27

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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