Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 05, 2024	Oct. 07, 2023	Oct. 05, 2024	Oct. 07, 2023
Pension plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 169	$ 157	$ 561	$ 524
Interest cost	272	301	906	1,003
Expected return on plan assets	(370)	(360)	(1,234)	(1,200)
Amortization of prior service cost (credit)	13	13	44	44
Amortization of net (gain) loss	9	40	32	133
Total net periodic pension cost (credit)	93	151	309	504
Postretirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	42	41	140	137
Interest cost	53	54	176	182
Amortization of prior service cost (credit)	(54)	(53)	(180)	(179)
Amortization of net (gain) loss	(42)	(57)	(139)	(190)
Total net periodic pension cost (credit)	$ (1)	$ (15)	$ (3)	$ (50)