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Major Customers (Details)
3 Months Ended
Mar. 31, 2014
customer
Mar. 31, 2013
Sales Revenue, Goods, Net [Member]
   
Concentration Risk [Line Items]    
Number of customers being disclosed 1  
Concentration Risk, Percentage 10.00%  
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member]
   
Concentration Risk [Line Items]    
Number of customers being disclosed 5  
Concentration Risk, Percentage 31.30% 25.30%
Credit Concentration Risk [Member] | Accounts Receivable [Member]
   
Concentration Risk [Line Items]    
Number of customers being disclosed 5  
Concentration Risk, Percentage 30.40% 22.30%