Quarterly report pursuant to Section 13 or 15(d)

Loss per Share - Additional Information (Details)

v3.20.2
Loss per Share - Additional Information (Details) - shares
9 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Earnings Per Share [Abstract]    
Potentially dilutive shares excluded from earnings per share calculation 135,263 134,363