Goodwill and Intangible Assets - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 25, 2021	Dec. 26, 2020
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 194,807	$ 34,407
Accumulated Amortization	11,980	9,200
Net Carrying Value	182,827	25,207
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	149,150	25,050
Accumulated Amortization	9,140	7,141
Net Carrying Value	140,010	17,909
Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	17,760	6,760
Accumulated Amortization	2,075	1,585
Net Carrying Value	15,685	5,175
Product Portfolio [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	25,300
Accumulated Amortization	42
Net Carrying Value	25,258
Technology [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	2,167	2,167
Accumulated Amortization	508	323
Net Carrying Value	1,659	1,844
Other [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	430	430
Accumulated Amortization	215	151
Net Carrying Value	$ 215	$ 279