Summary of Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 5,200
Balance at End of Period	3,000	$ 5,200
Allowance for Doubtful Accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		244	$ 144
Net Provision (Recovery)		(244)	165
Amounts Charged Against Reserves			(65)
Balance at End of Period			244
Discount Accrual
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	3,078	2,813	3,006
Net Provision (Recovery)	30,171	33,157	33,204
Amounts Charged Against Reserves	(30,177)	(32,892)	(33,397)
Balance at End of Period	3,072	3,078	2,813
Inventory Obsolescence Reserve
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	2,262	1,525	1,328
Net Provision (Recovery)	5,751	4,707	4,045
Amounts Charged Against Reserves	(6,187)	(3,970)	(3,848)
Balance at End of Period	1,826	2,262	1,525
Stale Beer Reserve
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	5,226	3,254	2,422
Net Provision (Recovery)	5,449	10,466	7,780
Amounts Charged Against Reserves	(7,652)	(8,494)	(6,948)
Balance at End of Period	$ 3,023	$ 5,226	$ 3,254