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Earnings Per Common Share (Narrative) (Details) - shares
3 Months Ended 6 Months Ended
Sep. 29, 2018
Sep. 23, 2017
Sep. 29, 2018
Sep. 23, 2017
Earnings Per Common Share [Abstract]        
Antidilutive securities excluded from computation of earnings per share 120,000 1,066,000 365,000 1,063,000