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Note 4 - Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
                   

Estimated

 

December 31,

 

2014

   

2013

   

Useful Life (years)

 
                         

Machinery and equipment

  $ 1,646,787     $ 1,263,962       5 to 10  

Computer equipment

    3,163,227       2,901,373       5  

Furniture and fixtures

    610,323       600,185       7  

Automobiles and trucks

    13,162       13,162       5  

Leasehold improvements

    1,532,355       1,518,779       10  
      6,965,854       6,297,461          

Less accumulated depreciation and amortization

    4,210,668       3,447,708          
    $ 2,755,186     $ 2,849,753