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Accounting Policies Inventory (Details) (Two Largest Vendors [Member], Supplier Concentration Risk [Member], Inventory purchased [Member])
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Two Largest Vendors [Member] | Supplier Concentration Risk [Member] | Inventory purchased [Member]
     
Concentration Risk [Line Items]      
Concentration Risk, Percentage 96.10% 76.10% 96.80%