Summary of Significant Accounting Policies - Estimated Useful Lives by Major Asset (Detail)	12 Months Ended
	Dec. 26, 2020
Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of Property, Plant and Equipment	3 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of Property, Plant and Equipment	39 years
Buildings and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of Property, Plant and Equipment	10 years
Buildings and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of Property, Plant and Equipment	39 years
Machinery, Equipment and Tooling [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of Property, Plant and Equipment	3 years
Machinery, Equipment and Tooling [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of Property, Plant and Equipment	7 years
Software and Computer Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of Property, Plant and Equipment	3 years
Software and Computer Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of Property, Plant and Equipment	10 years
Furniture, Fixtures and Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of Property, Plant and Equipment	7 years
Furniture, Fixtures and Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of Property, Plant and Equipment	39 years