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Concentrations (Details)
9 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2013
Net sales
item
Sep. 30, 2012
Net sales
item
Sep. 30, 2013
Net sales
Customer A
Sep. 30, 2012
Net sales
Customer A
Sep. 30, 2013
Net sales
Customer B
Sep. 30, 2012
Net sales
Customer B
Sep. 30, 2012
Net sales
Customer C
Sep. 30, 2013
Accounts receivable
item
Dec. 31, 2012
Accounts receivable
item
Sep. 30, 2013
Accounts receivable
Customer A
Dec. 31, 2012
Accounts receivable
Customer A
Sep. 30, 2013
Accounts receivable
Customer B
Dec. 31, 2012
Accounts receivable
Customer B
Concentration Risk                          
Number of customers 2 3           2 2        
Customer's percentage of net sales     27.00% 27.00% 11.00% 12.00% 12.00%     22.00% 43.00% 14.00% 13.00%