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Accounts Receivable (Tables)
 6 Months Ended
Jun. 28, 2014
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Text Block]
Accounts receivable, net, consists of the following:

 
 
June 28,
2014
 
December 31,
2013
Accounts receivable
 
$
5,200,036

 
$
5,833,888

Allowances for doubtful accounts
 
(62,238
)
 
(64,129
)
Accounts receivable, net
 
$
5,137,798

 
$
5,769,759