Property, Plant and Equipment - Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
Property, Plant and Equipment [Line Items]
Total	$ 249,881	$ 236,147
Less-accumulated depreciation and amortization	(148,044)	(137,500)
Property, plant and equipment, net	101,837	98,647
Buildings [Member]
Property, Plant and Equipment [Line Items]
Total	37,513	34,943
Machinery, Equipment and Tooling [Member]
Property, Plant and Equipment [Line Items]
Total	126,663	115,656
Furniture, Fixtures and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total	5,308	6,199
Software and Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Total	$ 80,397	$ 79,349