Accumulated Other Comprehensive Loss - Summary of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2016	Mar. 29, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning, balance	$ (82,407)	$ (89,914)
Pre-tax Activity	510	675
Tax Effect	(197)	(261)
Ending, balance	(82,094)	(89,500)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning, balance	(5)	(1)
Pre-tax Activity	15	(7)
Tax Effect	(5)	3
Ending, balance	5	(5)
Net Pension Activity [Member] | Actuarial Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning, balance	(68,243)	(74,867)
Pre-tax Activity	741	796
Tax Effect	(286)	(307)
Ending, balance	(67,788)	(74,378)
Net Pension Activity [Member] | Prior Service Costs [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning, balance	(78)	(99)
Pre-tax Activity	7	9
Tax Effect	(3)	(4)
Ending, balance	(74)	(94)
Net Postretirement Benefits Activity [Member] | Actuarial Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning, balance	(19,825)	(22,759)
Pre-tax Activity	587	717
Tax Effect	(227)	(277)
Ending, balance	(19,465)	(22,319)
Net Postretirement Benefits Activity [Member] | Prior Service Costs [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning, balance	5,744	7,812
Pre-tax Activity	(840)	(840)
Tax Effect	324	324
Ending, balance	$ 5,228	$ 7,296