Restructuring activities - Components of Costs Associated with Restructuring (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jul. 15, 2023	Jul. 15, 2023
Restructuring Cost And Reserve [Line Items]
Total restructuring charges	$ 2,499	$ 6,694
Employee Severance | VSIP
Restructuring Cost And Reserve [Line Items]
Total restructuring charges	1,302	5,229
Employee Severance | RIF
Restructuring Cost And Reserve [Line Items]
Total restructuring charges	899	899
Relocation costs
Restructuring Cost And Reserve [Line Items]
Total restructuring charges	$ 298	$ 566