Comprehensive Income and Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss), Net of Tax (Detail) $ in Thousands	6 Months Ended
	Jun. 28, 2015 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Beginning balance	$ (46,031)
Other comprehensive income before reclassifications	10,193
Amounts reclassified from accumulated other comprehensive income	1,691
Net current period other comprehensive income	11,884
Accumulated other comprehensive income (loss), Ending balance	(34,147)
Foreign Currency Translation Component [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Beginning balance	(2,591)
Other comprehensive income before reclassifications	10,193
Net current period other comprehensive income	10,193
Accumulated other comprehensive income (loss), Ending balance	7,602
Pension and Other Postretirement Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), Beginning balance	(43,440)
Amounts reclassified from accumulated other comprehensive income	1,691
Net current period other comprehensive income	1,691
Accumulated other comprehensive income (loss), Ending balance	$ (41,749)