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Employee Benefit Plans (Narrative) (Details)
shares in Millions, $ in Millions
9 Months Ended
Sep. 27, 2015
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options granted, vesting term (in years) 4 years
Stock Options [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total unrecognized compensation | $ $ 7.9
Weighted-average period of recognition of stock based compensation (in days) 923 days
Restricted Stock Units (RSUs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total unrecognized compensation | $ $ 21.0
Weighted-average period of recognition of stock based compensation (in days) 971 days
Employee Stock Purchase Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares reserved for future grant (in shares) 0.1
Maximum Percentage of compensation contributed by employees (in percentage) 10.00%
Purchase percentage of stock at fair market value (in percentage) 85.00%
2006 Long Term Incentive Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares reserved for future grant (in shares) 1.5