Components of, and Changes in Restructuring Accruals (Detail) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
		Jul. 11, 2020	Jul. 11, 2020	Jul. 13, 2019
Restructuring Cost And Reserve [Line Items]
Liability balance, beginning balance			$ 1,624	$ 401
Charges			1,265	984
Cash payments			(1,397)	(458)
Liability balance, ending balance	[1]	$ 1,492	1,492	927
VSIP
Restructuring Cost And Reserve [Line Items]
Liability balance, beginning balance			174	174
Charges		1,300	1,265
Cash payments			(174)
Liability balance, ending balance	[1]	1,265	1,265	174
Employee Termination Benefits
Restructuring Cost And Reserve [Line Items]
Liability balance, beginning balance	[2]		1,450	227
Charges	[2]			731
Cash payments	[2]		(1,223)	(205)
Liability balance, ending balance	[1],[2]	$ 227	$ 227	753
Reorganization Costs
Restructuring Cost And Reserve [Line Items]
Charges	[3]			253
Cash payments	[3]			$ (253)

[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.

[3] Reorganization costs include employee relocation expenses.