Accumulated Other Comprehensive Income (Loss) - Summary of Accumulated Other Comprehensive (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 455,166	$ 458,907
Pre-tax Activity	768	980
Tax Effect	(19,910)	(241)
Ending Balance	452,603	447,582
Reclassification of Stranded Tax Effects [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Tax Effect	(19,720)
Ending Balance	(19,720)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance		14
Pre-tax Activity	(10)	4
Tax Effect	1	(1)
Ending Balance	(9)	17
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(77,265)	(94,202)
Ending Balance	(96,407)	(93,463)
Net Pension Activity [Member] | Actuarial Loss [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(72,690)	(78,618)
Pre-tax Activity	901	933
Tax Effect	(222)	(230)
Ending Balance	(72,011)	(77,915)
Net Pension Activity [Member] | Prior Service Costs [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(24)	(43)
Pre-tax Activity	5	6
Tax Effect	(1)	(2)
Ending Balance	(20)	(39)
Net Postretirement Benefits Activity [Member] | Actuarial Loss [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(4,902)	(17,299)
Pre-tax Activity	196	499
Tax Effect	(48)	(122)
Ending Balance	(4,754)	(16,922)
Net Postretirement Benefits Activity [Member] | Prior Service Costs [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	351	1,744
Pre-tax Activity	(324)	(462)
Tax Effect	80	114
Ending Balance	$ 107	$ 1,396