Accumulated Other Comprehensive Income (Loss) - Summary of Accumulated Other Comprehensive (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance			$ 451,116	$ 455,166
Pre-tax Activity	$ 1,699	$ 259	2,921	1,814
Tax Effect	(419)	(63)	(720)	(20,167)
Ending Balance	559,555	481,107	559,555	481,107
Reclassification of stranded tax effects
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(19,720)	(19,720)	(19,720)	0
Pre-tax Activity	0	0	0	0
Tax Effect	0	0	0	(19,720)
Ending Balance	(19,720)	(19,720)	(19,720)	(19,720)
Total AOCI
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(114,081)	(95,814)	(115,002)	(77,265)
Ending Balance	(112,801)	(95,618)	(112,801)	(95,618)
Interest rate swap
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(1,283)	0	(270)	0
Pre-tax Activity	402	(496)	(942)	(496)
Tax Effect	(99)	122	232	122
Ending Balance	(980)	(374)	(980)	(374)
Foreign currency translation adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(14)	(4)	(16)	0
Pre-tax Activity	15	(23)	18	(26)
Tax Effect	(4)	6	(5)	5
Ending Balance	(3)	(21)	(3)	(21)
Net Pension Activity | Actuarial loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(91,381)	(71,332)	(93,174)	(72,690)
Pre-tax Activity	1,189	901	3,568	2,702
Tax Effect	(293)	(222)	(879)	(665)
Ending Balance	(90,485)	(70,653)	(90,485)	(70,653)
Net Pension Activity | Prior service costs
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	0	(15)	(7)	(24)
Pre-tax Activity	5	5	14	17
Tax Effect	(1)	(1)	(3)	(4)
Ending Balance	4	(11)	4	(11)
Net Postretirement Benefits Activity | Actuarial loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(1,059)	(4,607)	(1,191)	(4,902)
Pre-tax Activity	88	196	263	587
Tax Effect	(22)	(48)	(65)	(144)
Ending Balance	(993)	(4,459)	(993)	(4,459)
Net Postretirement Benefits Activity | Prior service costs
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(624)	(136)	(624)	351
Pre-tax Activity	0	(324)	0	(970)
Tax Effect	0	80	0	239
Ending Balance	$ (624)	$ (380)	$ (624)	$ (380)