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Note 10 - Intangible Assets
6 Months Ended
Jun. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Disclosure [Text Block]

10. Intangible Assets


Intangible assets consisted of the following (in thousands):


    Estimated Useful Life (in months)    

Gross

   

Accumulated Amortization

   

Net

 

As of June 30, 2014

                               

Patent

    57     $ 2,700     $ (1,854 )   $ 846  
            $ 2,700     $ (1,854 )   $ 846  
                                 

As of December 31, 2013

                               

Patent

    57     $ 2,700     $ (1,568 )   $ 1,132  
            $ 2,700     $ (1,568 )   $ 1,132  

As of June 30, 2014, the future amortization expense related to intangible assets is as follows (in thousands):


   

Amount

 

Year

       

2014

  $ 284  

2015

    562  
    $ 846