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Note 15 - Concentration of Risk (Tables)
12 Months Ended
Dec. 31, 2013
Risks and Uncertainties [Abstract]  
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

Accounts receivable:

2013

2012

  Customer A 

11%

13%

  Customer B 

21%

12%

     
     

Net Sales:

   

  Customer A 

14%

12%

  Customer B 

18%

21%