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Earnings Per Share (Details) - shares
shares in Thousands
3 Months Ended 9 Months Ended
Oct. 05, 2019
Oct. 06, 2018
Oct. 05, 2019
Oct. 06, 2018
Earnings Per Share        
Weighted average common shares outstanding 14,440 14,440 14,455 14,417
Dilutive effect of stock options and restricted stock units 28 29 30 30
Weighted average common shares outstanding, assuming dilution 14,468 14,469 14,485 14,447