Quarterly report pursuant to Section 13 or 15(d)

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

v3.7.0.1
Earnings Per Share - Dilutive effects of share based awards (Details) - shares
3 Months Ended 6 Months Ended
Jun. 29, 2017
Jun. 30, 2016
Jun. 29, 2017
Jun. 30, 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) 892,356 1,714,986 452,697 2,250,726