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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	Oct. 19, 2020	Sep. 26, 2020	Jun. 27, 2020	Dec. 28, 2019
Commitments and Contingencies Disclosure [Line Items]
Prepaid brewing service fees current		$ 22,214		$ 12,077
Prepaid Expense, Current		30,200
Payments for Capital Improvements		9,600
Commitments [Member]
Commitments and Contingencies Disclosure [Line Items]
Estimated volume commitments contractual shortfall fees		60,900
Commitments [Member] | Subsequent Event [Member]
Commitments and Contingencies Disclosure [Line Items]
Estimated volume commitments contractual shortfall fees	$ 10,300
Prepaid Brewing Fees
Commitments and Contingencies Disclosure [Line Items]
Prepaid brewing service fees current		9,000
Prepaid brewing service fees		$ 39,200
Minimum
Commitments and Contingencies Disclosure [Line Items]
Company's current brewing and packaging percentage			65.00%

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