Components of Net Periodic Benefit (Income) Cost (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Oct. 08, 2016	Jul. 16, 2016	Oct. 10, 2015	Oct. 08, 2016	Oct. 10, 2015
Defined Benefit Plan Disclosure [Line Items]
Settlement loss	$ 1,832	$ 4,600		$ 6,473
Pension plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	192		$ 201	639	$ 671
Interest cost	3,140		4,155	10,557	13,849
Expected return on plan assets	(6,325)		(6,840)	(20,394)	(22,801)
Settlement loss	1,832			6,473
Amortization of prior service cost (credit)	96			291
Amortization of net (gain) loss	2,175		1,149	5,128	3,830
Total net periodic benefit (income) cost	1,110		(1,335)	2,694	(4,451)
Post-retirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	93		92	308	307
Interest cost	71		83	237	277
Amortization of prior service cost (credit)	(49)		(108)	(163)	(361)
Amortization of net (gain) loss	(105)		(135)	(349)	(449)
Total net periodic benefit (income) cost	$ 10		$ (68)	$ 33	$ (226)