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Concentration of Credit Risk
 6 Months Ended
Jun. 30, 2011
Risks and Uncertainties [Abstract]  
Concentration Risk Disclosure [Text Block]
Note 7 - Concentration of Credit Risk

Concentration of credit risk with respect to trade accounts receivable is generally limited due to the number of entities comprising the Company's customer base. The Company performs ongoing credit evaluations and provides an allowance for potential credit losses against the portion of accounts receivable which is estimated to be uncollectible. Such losses have historically been within management's expectations.  During the three and six months ended June 30, 2011, there were two customers, respectively whose purchases represented more than 10% of the Company’s consolidated net sales.  During the three and six months ended June 30, 2010, there were three customers whose purchases represented more than 10% of the Company’s consolidated net sales.  The sales to each of these customers for the three and six months ended June 30, 2011 and 2010 are as follows:

   
Three Months Ended
   
Three Months Ended
 
   
June 30, 2011
   
June 30, 2010
 
         
% of Net
         
% of Net
 
Customer   Net Sales     Sales       Net Sales       Sales  
Customer A
  $ 3,549,000       29.7 %   $ 4,169,000       32.2 %
Customer B
  $ 1,563,000       13.1 %   $ 1,740,000       13.4 %
Customer C
                  $ 1,498,000       11.6 %
 
   
Six Months Ended
   
Six Months Ended
 
   
June 30, 2011
   
June 30, 2010
 
         
% of Net
         
% of Net
 
Customer
 
Net Sales
   
Sales
   
Net Sales
   
Sales
 
Customer A
  $ 7,433,000       30.1 %   $ 7,323,000       28.9 %
Customer B
  $ 3,196,000       13.0 %   $ 2,958,000       11.7 %
Customer C
                  $ 3,854,000       15.2 %
 
As of June 30, 2011, the total amount owed to the Company by these customers was $1,717,000 or 21.7%, $1,113,000 or 14.1%, and $150,000 or 1.9% of the Company’s consolidated accounts receivables, respectively.  The amounts owed at June 30, 2010 were $2,408,000 or 30.0%, $1,167,000 or 14.5%, and $839,000 or 10.4% of the Company’s consolidated net accounts receivables, respectively.