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(Loss) Earnings per Share - Additional Information (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Sep. 30, 2017
Oct. 01, 2016
Earnings Per Share [Abstract]        
Potentially dilutive shares 914,183 1,340,123 687,831 1,366,130