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Concentrations (Details)
3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended
Mar. 31, 2014
Net sales
item
Mar. 31, 2013
Net sales
item
Mar. 31, 2014
Net sales
Customer one
Mar. 31, 2013
Net sales
Customer one
Mar. 31, 2014
Net sales
Customer two
Mar. 31, 2013
Net sales
Customer two
Mar. 31, 2014
Accounts receivable
item
Dec. 31, 2013
Accounts receivable
item
Mar. 31, 2014
Accounts receivable
Customer one
Dec. 31, 2013
Accounts receivable
Customer one
Mar. 31, 2014
Accounts receivable
Customer two
Dec. 31, 2013
Accounts receivable
Customer two
Mar. 31, 2014
Accounts receivable
Customer three
Concentration Risk                          
Number of customers 2 2         3 2          
Customer's percentage of net sales     31.00% 29.00% 15.00% 13.00%     34.00% 47.00% 13.00% 14.00% 13.00%