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Note 6 - Long-term Debt (Tables)
 12 Months Ended
Dec. 31, 2015
Notes Tables  
Schedule of Debt [Table Text Block]
 
 
December 31,
 
 
 
2015
 
 
2014
 
                 
Senior secured debt due March 5, 2016 
(1)
 Interest accrues at 8% per annum
   $ 39,910     $ 34,735  
Senior secured debt due June 30, 2017 
(1)
 
Interest accrues at 8% per annum
     11,905       10,986  
Convertible note instrument due March 5, 2018
Interest accrues at 7% per annum
     4,018       60,455  
Convertible note instrument due March 5, 2020
Interest accrues at 7% per annum
     59,804          
Other loans
     193       28  
Debt discount, net of accumulated accretion
     (7,564
)
     (1,809
)
      108,266       104,395  
                 
Less current portion
     48       11  
                 
    $ 108,218     $ 104,384  
Schedule of Maturities of Long-term Debt [Table Text Block]
Year Ending
December 31
  
($ in thousands)
  
         
2016
   $ 39,959  
2017
     11,950  
2018
     4,059  
2019
     43  
2020
     59,819  
    $ 115,830