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Earnings Per Share (Details) - shares
shares in Thousands
4 Months Ended 6 Months Ended
Jul. 11, 2020
Jul. 13, 2019
Jul. 11, 2020
Jul. 13, 2019
Earnings Per Share        
Weighted average common shares outstanding 14,108 14,472 14,113 14,462
Dilutive effect of stock options and restricted stock units 71 23 66 23
Weighted average common shares outstanding, assuming dilution 14,179 14,495 14,179 14,485