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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