Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details)

v3.19.3.a.u2
Summary of Significant Accounting Policies (Details)
12 Months Ended
Dec. 28, 2019
Machinery and equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful life 2 years
Machinery and equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful life 14 years
Office furniture and equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful life 2 years
Office furniture and equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful life 14 years
Building and land improvements [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful life 7 years
Building and land improvements [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful life 40 years
Buildings [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful life 25 years
Buildings [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful life 40 years