Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment - Schedule of Property and Equipment (Details)

v3.20.2
Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 26, 2020
Dec. 28, 2019
Property Plant And Equipment [Line Items]    
Property plant and equipment, gross $ 2,515 $ 2,503
Less accumulated depreciation and amortization (2,247) (2,179)
Total property and equipment, net 268 324
Building and Improvements    
Property Plant And Equipment [Line Items]    
Property plant and equipment, gross $ 72 69
Building and Improvements | Minimum    
Property Plant And Equipment [Line Items]    
Estimated useful life 3 years  
Building and Improvements | Maximum    
Property Plant And Equipment [Line Items]    
Estimated useful life 30 years  
Equipment    
Property Plant And Equipment [Line Items]    
Property plant and equipment, gross $ 2,443 2,314
Equipment | Minimum    
Property Plant And Equipment [Line Items]    
Estimated useful life 3 years  
Equipment | Maximum    
Property Plant And Equipment [Line Items]    
Estimated useful life 15 years  
Projects Under Construction    
Property Plant And Equipment [Line Items]    
Property plant and equipment, gross   $ 120