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Note 5 - Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
   

2014

   

2013

 

Land

  $ 2,220,000     $ 2,220,000  

Buildings

    6,631,039       6,631,039  

Building improvements

    5,577,248       5,417,620  

Machinery and equipment

    2,333,129       2,329,299  

Furniture and fixtures

    712,549       703,999  

Computer equipment

    636,819       576,111  

Transportation equipment

    65,994       65,994  

Lab equipment

    1,564,082       1,560,251  

Totals at cost

    19,740,860       19,504,313  

Less: Accumulated depreciation and amortization

    (4,715,577 )     (4,012,202 )
    $ 15,025,283     $ 15,492,111  
                 

Depreciation and amortization expense (1)

  $ 797,928     $ 646,422