Quarterly report pursuant to Section 13 or 15(d)

Net Income Per Share (Narrative) (Details)

v3.7.0.1
Net Income Per Share (Narrative) (Details) - shares
3 Months Ended 6 Months Ended
Jun. 25, 2017
Jun. 26, 2016
Jun. 25, 2017
Jun. 26, 2016
Earnings Per Share [Abstract]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 25,000 3,000 8,000 1,000