Components of Net Periodic Benefit Cost (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 06, 2012	Oct. 08, 2011	Oct. 06, 2012	Oct. 08, 2011
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 142	$ 110	$ 469	$ 368
Interest cost	5,001	5,278	16,670	15,500
Expected return on plan assets	(6,070)	(6,291)	(20,232)	(18,421)
Amortization of net (gain) loss	1,174	629	3,912	2,096
Total net periodic benefit (income) cost	247	(274)	819	(457)
Other Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost	106	98	352	327
Interest cost	140	220	465	614
Amortization of prior service (credit) cost	(59)	(59)	(198)	(198)
Amortization of net (gain) loss	(70)	(11)	(230)	(37)
Total net periodic benefit (income) cost	$ 117	$ 248	$ 389	$ 706