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Concentration of Credit Risk
 6 Months Ended
Jun. 30, 2014
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 large 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, 2014 and 2013, there were two customers whose purchases represented more than 10% of the Company’s consolidated net sales, respectively. Sales to these customers for the three and six months ended June 30, 2014 and 2013 are as follows:
 
 
 
Three Months Ended
 
 
Three Months Ended
 
 
 
June 30, 2014
 
 
June 30, 2013
 
Customer
 
Net Sales
 
% of Net
Sales
 
Net Sales
 
% of Net 
Sales
 
Customer A
 
$
3,703,000
 
 
 
28.1
%
 
$
3,537,000
 
 
 
27.1
%
 
Customer B
 
$
1,379,000
 
 
 
10.5
%
 
$
1,921,000
 
 
 
14.7
%
 
 
 
 
Six Months Ended
 
Six Months Ended
 
 
 
June 30, 2014
 
June 30, 2013
 
Customer
 
Net Sales
 
% of Net 
Sales
 
Net Sales
 
% of Net 
Sales
 
Customer A
 
$
7,930,000
 
 
 
28.2
%
 
$
8,411,000
 
 
 
31.9
%
 
Customer B
 
$
3,163,000
 
 
 
11.3
%
 
$
2,681,000
 
 
 
10.2
%
 
 
As of June 30, 2014, the total amounts owed to the Company by these customers were approximately $2,092,000 or 20.8%, and $1,541,000 or 15.3% of the Company’s consolidated net accounts receivable, respectively. The amounts owed at June 30, 2013 by these customers were approximately $1,411,000 or 18.5% and $1,209,000 or 15.8% of the Company’s consolidated net accounts receivable.