Note 5 - Property and Equipment and Assets Held for Sale (Details) - Property and Equipment (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment at cost	$ 3,475	$ 9,840
Less: accumulated depreciation	(2,939)	(8,040)
Property and equipment, net	536	1,800
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment at cost	1,472	5,963
Tooling [Member]
Property, Plant and Equipment [Line Items]
Property and equipment at cost	769	2,600
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment at cost	115	132
Software and Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Property and equipment at cost	521	462
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment at cost	589	633
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment at cost	$ 9	$ 50