Restructuring activities - Components of, and Changes in Restructuring Accruals (Detail) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
		Jul. 15, 2023	Jul. 15, 2023
Restructuring Cost And Reserve [Line Items]
Charges		$ 2,499	$ 6,694
Cash payments			(3,976)
Liability balance, ending balance	[1]	2,718	2,718
Employee Severance | VSIP
Restructuring Cost And Reserve [Line Items]
Charges		1,302	5,229
Cash payments			(2,511)
Liability balance, ending balance	[1]	2,718	2,718
Employee Severance | RIF
Restructuring Cost And Reserve [Line Items]
Charges		899	899
Cash payments			(899)
Liability balance, ending balance
Relocation costs
Restructuring Cost And Reserve [Line Items]
Charges		298	566
Cash payments			(566)
Liability balance, ending balance

[1] Recorded in the other accrued liabilities line item of our Condensed Consolidated Balance Sheets.