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
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	$ 815,295	$ 754,113	$ 1,522,411	$ 1,287,794
Selling, delivery & administrative expenses	392,298	366,523	776,243	683,594
Subtotal pre-tax	2,883	(11,324)	29,416	(3,216)
Income tax expense	(135)	3,743	(13,106)	52
Total after tax effect	3,933	(6,348)	18,118	(1,297)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	222	149	444	284
Selling, delivery & administrative expenses	742	589	1,500	1,174
Subtotal pre-tax	964	738	1,944	1,458
Income tax expense	238	284	479	562
Total after tax effect	726	454	1,465	896
Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Currency Translation Adjustment [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Selling, delivery & administrative expenses	(12)	22	(8)	26
Subtotal pre-tax	(12)	22	(8)	26
Income tax expense	(3)	8	(2)	10
Total after tax effect	(9)	14	(6)	16
Net Pension Activity [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	215	171	431	326
Selling, delivery & administrative expenses	724	643	1,447	1,302
Subtotal pre-tax	939	814	1,878	1,628
Income tax expense	231	314	463	628
Total after tax effect	708	500	1,415	1,000
Net Postretirement Benefits Activity [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	7	(22)	13	(42)
Selling, delivery & administrative expenses	30	(76)	61	(154)
Subtotal pre-tax	37	(98)	74	(196)
Income tax expense	10	(38)	18	(76)
Total after tax effect	$ 27	$ (60)	$ 56	$ (120)