Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Balance Sheet Components (Details 1)

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Note 6 - Balance Sheet Components (Details 1) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 7,137 $ 7,362
Less: accumulated depreciation and amortization (4,639) (4,119)
Property and equipment, net 2,498 3,243
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 3,598 3,521
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 2,504 2,504
Manufacturing And Lab Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 3 3
Vehicles [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 86 334
Displays [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 484 483
Website [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 462 462
Construction in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 0 $ 55