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Note 8 - Debt (Details) - Summary of Debt Components (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Discounts on long-term debt   $ (2,368)
Subtotal 264 4,070
Less: Current maturies of long-term debt (62) (59)
Long-term debt 202 4,011
Unsecured Convertible Notes [Member]
   
Debt Instrument [Line Items]    
Debt Instruments   6,145
Cognovit Note - Keystone Ruby, LLC [Member]
   
Debt Instrument [Line Items]    
Debt Instruments 194 223
Unsecured Promissory Note - Quercus Trust [Member]
   
Debt Instrument [Line Items]    
Debt Instruments $ 70 $ 70