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Note 6 - Property and Equipment
 12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Property, Plant and Equipment Disclosure [Text Block]
6.
PROPERTY AND EQUIPMENT
 
 
 
Year
E
nded
December 31,
 
 
 
201
6
 
 
201
5
 
Machinery and equipment (5-7 year life)
   $
2,459,532
     $
2,398,613
  
Furniture and fixtures (3-5 year life)
    
246,507
      
244,923
  
Leasehold improvements (5-7 year life)
    
269,819
      
269,819
  
     
2,975,858
      
2,913,355
  
Less accumulated depreciation and amortization
    
(2,513,022
)
    
(2,058,483
)
Total
   $
462,836
     $
854,872