Quarterly report pursuant to Section 13 or 15(d)

Loss per Share - Additional Information (Details)

v3.19.3
Loss per Share - Additional Information (Details) - shares
shares in Thousands
3 Months Ended 9 Months Ended
Sep. 28, 2019
Sep. 29, 2018
Sep. 28, 2019
Sep. 29, 2018
Earnings Per Share [Abstract]        
Potentially dilutive shares excluded from earnings per share calculation 134 139 134 139