Quarterly Financial Data (Unaudited) - Schedule of Quarterly Financial Data - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2017	Oct. 01, 2017	Jul. 02, 2017	Apr. 02, 2017	Jan. 01, 2017	Oct. 02, 2016	Jul. 03, 2016	Apr. 03, 2016
Tax Act Impact [Member]
Income net of tax	$ 66,595
Income per basic common share	$ 7.14
Commodity Hedging Program [Member]
Income/(expenses) per basic common shares	$ 0.03	$ 0.22	$ (0.08)	$ 0.02	$ 0.04	$ 0.03	$ 0.18	$ 0.07
Pre-tax total income/(expense)	$ 589	$ 3,401	$ (1,187)	$ 327	$ 530	$ 388	$ 2,770	$ 1,040
Income/(expenses) net of tax	254	2,098	(732)	202	326	239	1,704	640
Amortization of Converted Distribution Rights [Member]
Pre-tax total expense	2,330	2,760	2,760
Expenses net of tax	$ 1,004	$ 1,703	$ 1,703
Expenses per basic common shares	$ 0.11	$ 0.18	$ 0.18
System Transformation Transactions Settlement Impact [Member]
Income/(expenses) per basic common shares	$ (0.11)		$ 0.61
Pre-tax total income/(expense)	$ (2,446)		$ 9,442
Income/(expenses) net of tax	(1,054)		5,826
System Transformation Transactions Acquisitions Impact [Member]
Net sales impact	536,070	$ 478,272	472,649	264,906	219,780	174,420	162,819	35,311
Pre-tax income (loss) impact	(415)	10,329	15,320	4,450	5,153	2,512	13,502	1,206
Net income (loss) impact	$ (179)	$ 6,373	$ 9,452	$ 2,746	$ 3,169	$ 1,545	$ 8,304	$ 742
Income/(expenses) per basic common shares	$ (0.02)	$ 0.68	$ 1.02	$ 0.29	$ 0.34	$ 0.17	$ 0.89	$ 0.08
System Transformation Transactions Divestitures Impact [Member]
Net sales impact					$ 68,929
Pre-tax income (loss) impact					11,538
Net income (loss) impact					$ 7,096
Income/(expenses) per basic common shares					$ 0.76
Acquisition of Southeastern Container Preferred Shares from CCR impact [Member]
Pre-tax income (loss) impact	$ 6,012
Net income (loss) impact	$ 2,591
Income/(expenses) per basic common shares	$ 0.28
Portion of Legacy Facilities Credit Related to Mobile, Alabama Facility Impact [Member]
Pre-tax income (loss) impact	$ 12,364
Net income (loss) impact	$ 5,329
Income/(expenses) per basic common shares	$ 0.57
Special Charitable Contribution [Member]
Pre-tax total expense								$ 4,000
Expenses net of tax								$ 2,460
Expenses per basic common shares								$ 0.26
Expenses Related to System Transformation Transactions [Member]
Pre-tax total expense	$ 17,171	$ 13,148	$ 11,574	$ 7,652	$ 9,066	$ 9,780	$ 7,005	$ 6,423
Expenses net of tax	$ 7,401	$ 8,112	$ 7,141	$ 4,721	$ 5,576	$ 6,015	$ 4,308	$ 3,950
Expenses per basic common shares	$ 0.79	$ 0.86	$ 0.77	$ 0.50	$ 0.59	$ 0.66	$ 0.46	$ 0.43
Exchange of Franchise Territories [Member]
Pre-tax income (loss) impact	$ 529
Net income (loss) impact	$ 228
Income/(expenses) per basic common shares	$ 0.02
Expenses per basic common shares							$ 0.05
Pre-tax total adjustment, reduction of gain							$ 692
Adjustment net of tax, reduction of gain							426
Impact of Changes in Product Supply Governance [Member]
Pre-tax total expense					$ 2,591	$ 1,614	1,105	$ 2,213
Expenses net of tax					$ 1,593	$ 993	$ 680	$ 1,361
Expenses per basic common shares					$ 0.17	$ 0.11	$ 0.07	$ 0.15
Business Acquisition Contingent Consideration [Member]
Income/(expenses) per basic common shares	$ 0.92	$ 0.35	$ (1.07)	$ (0.81)	$ 1.85	$ 0.49	$ (1.06)	$ (1.14)
Pre-tax total income/(expense)	$ 19,914	$ 5,225	$ (16,119)	$ (12,246)	$ 27,970	$ 7,365	$ (16,274)	$ (17,151)
Income/(expenses) net of tax	$ 8,583	$ 3,224	$ (9,945)	$ (7,556)	$ 17,202	$ 4,530	$ (10,009)	$ (10,548)