Change in Accumulated Other Comprehensive Income (Loss), Net of tax (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance, accumulated other comprehensive income (loss), net of tax	$ (110,855)	$ (132,048)
Other comprehensive income (loss) before reclassifications	5,199	(32,744)
Amounts reclassified from accumulated other comprehensive income (loss)	1,408	2,034
Net current-period other comprehensive income (loss)	6,607	(30,710)
Ending balance, accumulated other comprehensive income (loss), net of tax	(104,248)	(162,758)
Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance, accumulated other comprehensive income (loss), net of tax		(381)
Other comprehensive income (loss) before reclassifications	233	362
Amounts reclassified from accumulated other comprehensive income (loss)	(90)	(374)
Net current-period other comprehensive income (loss)	143	(12)
Ending balance, accumulated other comprehensive income (loss), net of tax	143	(393)
Pension and Other Postretirement Benefits Plans
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance, accumulated other comprehensive income (loss), net of tax	(97,037)	(127,257)
Other comprehensive income (loss) before reclassifications	(256)	(452)
Amounts reclassified from accumulated other comprehensive income (loss)	1,498	2,408
Net current-period other comprehensive income (loss)	1,242	1,956
Ending balance, accumulated other comprehensive income (loss), net of tax	(95,795)	(125,301)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance, accumulated other comprehensive income (loss), net of tax	(13,818)	(4,410)
Other comprehensive income (loss) before reclassifications	5,222	(32,654)
Net current-period other comprehensive income (loss)	5,222	(32,654)
Ending balance, accumulated other comprehensive income (loss), net of tax	$ (8,596)	$ (37,064)