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Concentration of Credit Risk
 6 Months Ended
Jun. 30, 2013
Risks and Uncertainties [Abstract]  
Concentration Risk Disclosure [Text Block]
Note 8 - 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, 2013, there were two customers whose purchases represented more than 10% of the Company’s consolidated net sales. During the three and six months ended June 30, 2012, there was one customer whose purchases represented more than 10% of the Company’s consolidated net sales. Sales to the top customers for the three and six months ended June 30, 2013 and 2012 are as follows:
 
 
 
Three Months Ended
June 30, 2013
 
 
Three Months Ended
June 30, 2012
 
 
Customer
 
Net Sales
 
% of Net
Sales
 
 
Net Sales
 
% of Net
Sales
 
 
Customer A
 
$
3,537,000
 
 
27.1
%
 
$
3,581,000
 
 
30.3
%
 
Customer B
 
$
1,921,000
 
 
14.7
%
 
 
N/A
 
 
N/A
 
 
 
 
 
Six Months Ended
June 30, 2013
 
 
Six Months Ended
June 30, 2012
 
 
Customer
 
Net Sales
 
% of Net
Sales
 
 
Net Sales
 
% of Net
Sales
 
 
Customer A
 
$
8,411,000
 
 
31.9
%
 
$
7,335,000
 
 
28.6
%
 
Customer B
 
$
2,681,000
 
 
10.2
%
 
 
N/A
 
 
N/A
 
 
 
As of June 30, 2013, the total amounts owed to the Company by the largest customers were $ $1,411,000 or 18.5% and $1,209,000 or 15.8% of the Company’s consolidated accounts receivables. The amount owed at June 30, 2012 by the largest customer was $972,000 or 17.1% of the Company’s consolidated net accounts receivables, respectively.