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Equity and Noncontrolling Interest - Narrative (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Cost of Sales [Member]
       
Concentration Risk [Line Items]        
Reclassification Percentage 27.00% 27.00% 27.00% 27.00%
Operating Expense [Member]
       
Concentration Risk [Line Items]        
Reclassification Percentage 73.00% 73.00% 73.00% 73.00%