Net Income Per Share - Computation of Basic Net Income Per Share and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016
Numerator for basic and diluted net income per Common Stock and Class B Common Stock share:
Net income attributable to Coca-Cola Bottling Co. Consolidated	$ 6,348	$ 15,652	$ 1,297	$ 5,611
Less dividends:
Dividends on Common Stock	1,786	1,786	3,571	3,571
Total undistributed earnings (loss) – basic	4,014	13,323	(3,365)	959
Total undistributed earnings (loss) - diluted	4,014	13,323	(3,365)	959
Numerator for basic net income per Common Stock share:
Numerator for basic net income per Common Stock share	4,857	12,002	994	4,307
Numerator for diluted net income per Common Stock share:
Numerator for diluted net income per Common Stock share	$ 6,348	$ 15,652	$ 1,297	$ 5,611
Denominator for basic net income per Common share:
Weighted average number of Common Stock shares outstanding	7,141	7,141	7,141	7,141
Denominator for diluted net income per Stock share:
Weighted average number of Common Stock shares outstanding – assuming dilution	9,374	9,353	9,366	9,345
Basic net income per share based on net income attributable to Coca-Cola Bottling Co. Consolidated:
Common Stock	$ 0.68	$ 1.68	$ 0.14	$ 0.60
Diluted net income per share based on net income attributable to Coca-Cola Bottling Co. Consolidated:
Common Stock	$ 0.68	$ 1.67	$ 0.14	$ 0.59
Class B Common Stock [Member]
Less dividends:
Dividends on Common Stock	$ 548	$ 543	$ 1,091	$ 1,081
Total undistributed earnings (loss) – basic	943	3,107	(788)	223
Total undistributed earnings (loss) - diluted	956	3,151	(799)	226
Numerator for basic net income per Common Stock share:
Numerator for basic net income per Common Stock share	1,491	3,650	303	1,304
Numerator for diluted net income per Common Stock share:
Numerator for diluted net income per Common Stock share	$ 1,504	$ 3,694	$ 292	$ 1,307
Denominator for basic net income per Common share:
Weighted average number of Common Stock shares outstanding	2,193	2,172	2,185	2,164
Denominator for diluted net income per Stock share:
Weighted average number of Common Stock shares outstanding – assuming dilution	2,233	2,212	2,225	2,204
Basic net income per share based on net income attributable to Coca-Cola Bottling Co. Consolidated:
Common Stock	$ 0.68	$ 1.68	$ 0.14	$ 0.60
Diluted net income per share based on net income attributable to Coca-Cola Bottling Co. Consolidated:
Common Stock	$ 0.67	$ 1.67	$ 0.13	$ 0.59
Common Stock [Member]
Less dividends:
Total undistributed earnings (loss) – basic	$ 3,071	$ 10,216	$ (2,577)	$ 736
Total undistributed earnings (loss) - diluted	$ 3,058	$ 10,172	$ (2,566)	$ 733