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Summary of Significant Accounting Policies (Details) - Concentration of risk raw materials purchases
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Vendor A [Member]
   
Concentration Risk [Line Items]    
Purchase Of Raw Material, Concentration of Risk, Percentage 19.00% 13.00%
Vendor B [Member]
   
Concentration Risk [Line Items]    
Purchase Of Raw Material, Concentration of Risk, Percentage 18.00% 16.00%
Vendor C [Member]
   
Concentration Risk [Line Items]    
Purchase Of Raw Material, Concentration of Risk, Percentage 6.00% 16.00%
Vendor D [Member]
   
Concentration Risk [Line Items]    
Purchase Of Raw Material, Concentration of Risk, Percentage 9.00% 13.00%