Quarterly report pursuant to Section 13 or 15(d)

Capital Stock - Additional Information (Details)

v3.20.2
Capital Stock - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 27, 2020
Sep. 29, 2019
Sep. 27, 2020
Sep. 29, 2019
Stock Option [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share-based Payment Arrangement, Expense $ 57 $ 57 $ 172 $ 120
Restricted Stock Units (RSUs) [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share-based Payment Arrangement, Expense $ 101 $ 296 $ 303 $ 418
RSU granted     178,000