Earnings Per Share - Anti-dilutive Options (Details) - shares
shares in Thousands
3 Months Ended
Mar. 31, 2017
Apr. 01, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive stock options (in shares) 35 22
Anti-dilutive stock options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive stock options (in shares) 35 21
Anti-dilutive restricted stock units    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive stock options (in shares) 0 1