Components of Net Periodic Benefit (Income) Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 10, 2015	Oct. 04, 2014	Oct. 10, 2015	Oct. 04, 2014
Net Periodic Pension Cost
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 201	$ 148	$ 671	$ 493
Interest cost	4,155	4,944	13,849	16,481
Expected return on plan assets	(6,840)	(7,804)	(22,801)	(26,013)
Amortization of net (gain) loss	1,149	444	3,830	1,480
Total net periodic benefit (income) cost	(1,335)	(2,268)	(4,451)	(7,559)
Net Periodic Post-Retirement Benefit Cost
Defined Benefit Plan Disclosure [Line Items]
Service cost	92	87	307	290
Interest cost	83	103	277	343
Amortization of prior service (credit) cost	(108)	(108)	(361)	(360)
Amortization of net (gain) loss	(135)	(133)	(449)	(444)
Total net periodic benefit (income) cost	$ (68)	$ (51)	$ (226)	$ (171)