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Concentration of Credit Risk (Tables)
9 Months Ended
Sep. 30, 2013
Risks and Uncertainties [Abstract]  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
Sales to these customers for the three and nine months ended September 30, 2013 and 2012 are as follows:
 
 
 
 
Three Months Ended
 
 
 
Three Months Ended
 
 
 
 
 
September 30, 2013
 
 
 
September 30, 2012
 
 
Customer
 
 
Net Sales
 
% of Net
Sales
 
 
 
Net Sales
 
% of Net
Sales
 
 
Customer A
 
$
3,002,000
 
20.7
%
 
$
2,251,000
 
19.1
%
 
Customer B
 
$
1,977,000
 
13.7
%
 
 
N/A
 
N/A
 
 
Customer C
 
$
1,884,000
 
13.0
%
 
 
N/A
 
N/A
 
 
Customer D
 
 
N/A
 
N/A
 
 
$
1,478,000
 
12.5
%
 
 
 
 
Nine Months Ended
 
 
Nine Months Ended
 
 
 
 
September 30, 2013
 
 
September 30, 2012
 
 
Customer
 
 
Net Sales
 
% of Net
Sales
 
 
Net Sales
 
% of Net
Sales
 
 
Customer A
 
$
11,412,000
 
27.9
%
 
$
9,586,000
 
25.6
%
 
Customer B
 
$
4,658,000
 
11.4
%
 
 
N/A
 
N/A