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Basis of Presentation and Significant Accounting Policies (Recently Adopted Accounting Standards) (Details) - Sell-Through Distributors Concentration Risk
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Sep. 30, 2017
Oct. 01, 2016
Dec. 31, 2016
Product revenue          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Concentration Risk 72.00%   71.00%   66.00%
Revenue          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Concentration Risk 68.00% 62.00% 65.00% 58.00% 60.00%