Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Dilutive effects of share based awards (Details)

v3.8.0.1
Earnings Per Share - Dilutive effects of share based awards (Details) - shares
3 Months Ended 9 Months Ended
Sep. 28, 2017
Sep. 29, 2016
Sep. 28, 2017
Sep. 29, 2016
Stock options        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive shares excluded from the computation of diluted earnings (per share) 11,664 1,903,466 717,685 2,332,976