Summary of Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 1,800
Balance at End of Period	3,100	$ 1,800
Allowance for Doubtful Accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	47	2
Net Provision (Recovery)	488	45	$ 2
Balance at End of Period	535	47	2
Discount Accrual
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	6,272	4,636	3,072
Net Provision (Recovery)	59,279	43,920	36,213
Amounts Charged Against Reserves	(56,194)	(42,284)	(34,649)
Balance at End of Period	9,357	6,272	4,636
Inventory Obsolescence Reserve
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	6,375	2,580	1,826
Net Provision (Recovery)	11,248	8,092	4,175
Amounts Charged Against Reserves	(11,292)	(4,297)	(3,421)
Balance at End of Period	6,331	6,375	2,580
Stale Beer Reserve
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	1,828	2,146	3,023
Net Provision (Recovery)	8,411	4,406	2,691
Amounts Charged Against Reserves	(7,147)	(4,724)	(3,568)
Balance at End of Period	$ 3,092	$ 1,828	$ 2,146