Components of, and Changes in Restructuring Accruals (Detail) - USD ($) $ in Thousands		4 Months Ended
		Apr. 24, 2021	Apr. 18, 2020
Restructuring Cost And Reserve [Line Items]
Liability balance, beginning balance		$ 1,508	$ 1,624
Cash payments		(1,508)	(1,025)
Liability balance, ending balance	[1]		599
VSIP
Restructuring Cost And Reserve [Line Items]
Liability balance, beginning balance		1,036	174
Cash payments		(1,036)	(174)
RIF
Restructuring Cost And Reserve [Line Items]
Liability balance, beginning balance		472
Cash payments		$ (472)
Employee Termination Benefits
Restructuring Cost And Reserve [Line Items]
Liability balance, beginning balance	[2]		1,450
Cash payments	[2]		(851)
Liability balance, ending balance	[1],[2]		$ 599

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

[2] Employee termination benefits are not related to the VSIP.