Accumulated Other Comprehensive Loss - Summary of Impact of Accumulated Other Comprehensive Income (Loss) on Income Statement (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Reclassification to income, Pre-tax Activity	$ 616	$ 1,164	$ 1,232	$ 2,328
Reclassification to income, Tax Effect	239	456	477	913
Reclassification to income, Net of Tax	377	708	755	1,415
Cost of Sales [Member]
Defined Benefit Plan Disclosure [Line Items]
Reclassification to income, Pre-tax Activity	106	118	203	229
Selling, Delivery and Administrative Expenses (S,D&A) [Member]
Defined Benefit Plan Disclosure [Line Items]
Reclassification to income, Pre-tax Activity	510	1,046	1,029	2,099
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Reclassification to income, Pre-tax Activity	431	842	862	1,684
Reclassification to income, Tax Effect	166	330	333	660
Reclassification to income, Net of Tax	265	512	529	1,024
Pension Plans [Member] | Cost of Sales [Member]
Defined Benefit Plan Disclosure [Line Items]
Reclassification to income, Pre-tax Activity	82	76	155	152
Pension Plans [Member] | Selling, Delivery and Administrative Expenses (S,D&A) [Member]
Defined Benefit Plan Disclosure [Line Items]
Reclassification to income, Pre-tax Activity	349	766	707	1,532
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Reclassification to income, Pre-tax Activity	185	322	370	644
Reclassification to income, Tax Effect	73	126	144	253
Reclassification to income, Net of Tax	112	196	226	391
Postretirement Benefits [Member] | Cost of Sales [Member]
Defined Benefit Plan Disclosure [Line Items]
Reclassification to income, Pre-tax Activity	24	42	48	77
Postretirement Benefits [Member] | Selling, Delivery and Administrative Expenses (S,D&A) [Member]
Defined Benefit Plan Disclosure [Line Items]
Reclassification to income, Pre-tax Activity	$ 161	$ 280	$ 322	$ 567