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Basis of Presentation and Significant Accounting Policies - Concentration Risks (Details) - Customer Concentration Risk [Member] - Sales [Member] - customer
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Product Information [Line Items]      
Customers above benchmark (in customers) 2 1 0
Concentration risk, percentage 10.00% 10.00% 10.00%
Customer A      
Product Information [Line Items]      
Concentration risk, percentage 14.46% 13.00%  
Customer B      
Product Information [Line Items]      
Concentration risk, percentage 12.45%