Accumulated Other Comprehensive Income (Loss) - Summary of Impact of Accumulated Other Comprehensive Income (Loss) on Statement of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	$ 797,914	$ 837,880	$ 1,565,640	$ 1,551,484
Selling, delivery and administrative expenses	346,183	368,565	718,657	737,719
Subtotal pre-tax	(57,800)	(24,038)	(78,762)	(15,455)
Income tax expense (benefit)	15,187	7,182	20,548	4,177
Total after tax effect	(39,569)	(15,370)	(54,231)	(8,539)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	417	200	799	396
Selling, delivery and administrative expenses	871	587	423	1,159
Subtotal pre-tax	1,288	787	1,222	1,555
Income tax expense (benefit)	317	194	301	384
Total after tax effect	971	593	921	1,171
Reclassification out of Accumulated Other Comprehensive Income | Interest Rate Swap
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	0	0	0	0
Selling, delivery and administrative expenses	3	0	(1,344)	0
Subtotal pre-tax	3	0	(1,344)	0
Income tax expense (benefit)	1	0	(331)	0
Total after tax effect	2	0	(1,013)	0
Reclassification out of Accumulated Other Comprehensive Income | Foreign Currency Translation Adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	0	0	0	0
Selling, delivery and administrative expenses	4	7	3	(3)
Subtotal pre-tax	4	7	3	(3)
Income tax expense (benefit)	1	2	1	1
Total after tax effect	3	5	2	(4)
Reclassification out of Accumulated Other Comprehensive Income | Net Pension Activity | Defined Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	360	266	694	529
Selling, delivery and administrative expenses	834	641	1,694	1,284
Subtotal pre-tax	1,194	907	2,388	1,813
Income tax expense (benefit)	294	223	588	446
Total after tax effect	900	684	1,800	1,367
Reclassification out of Accumulated Other Comprehensive Income | Net  Postretirement Benefits Activity | Defined Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	57	(66)	105	(133)
Selling, delivery and administrative expenses	30	(61)	70	(122)
Subtotal pre-tax	87	(127)	175	(255)
Income tax expense (benefit)	21	(31)	43	(63)
Total after tax effect	$ 66	$ (96)	$ 132	$ (192)