Components of Costs Associated with Project Centennial (Detail) - USD ($) $ in Thousands		4 Months Ended
		Apr. 20, 2019	Apr. 21, 2018
Restructuring and related impairment charges:
Restructuring and related impairment charges	[1]		$ 1,259
Total Project Centennial restructuring costs		$ 718
Project Centennial implementation costs	[2]		6,432
Total Project Centennial restructuring and implementation costs			7,691
VSIP
Restructuring and related impairment charges:
Restructuring and related impairment charges	[1]		(597)
Reorganization Costs
Restructuring and related impairment charges:
Restructuring and related impairment charges	[1]	211	1,512
Impairment of Assets
Restructuring and related impairment charges:
Restructuring and related impairment charges	[1]	530
Employee Termination Benefits
Restructuring and related impairment charges:
Restructuring and related impairment charges	[1]	$ (23)	$ 344

[1] Presented on our Condensed Consolidated Statements of Income

[2] Costs are recorded in the selling, distribution and administrative expenses line item of our Condensed Consolidated Statements of Income.