Commitments and Contingencies - Additional Information (Detail) $ in Thousands	6 Months Ended
	Jun. 27, 2020 USD ($) vendor	Dec. 28, 2019 USD ($)
Commitments and Contingencies Disclosure [Line Items]
Contractual obligations	$ 225,100
Prepaid brewing service fees current	22,693	$ 12,077
Prepaid Brewing Fees [Member]
Commitments and Contingencies Disclosure [Line Items]
Prepaid brewing service fees current	6,400
Prepaid brewing service fess non current	22,800
Prepaid brewing service fees	29,200
Equipment and machinery
Commitments and Contingencies Disclosure [Line Items]
Contractual obligations	61,500
Lease commitments outstanding	12,300
Third Party Brewery
Commitments and Contingencies Disclosure [Line Items]
Capital improvement	$ 8,000
Minimum
Commitments and Contingencies Disclosure [Line Items]
Company's current brewing and packaging percentage	60.00%
Barley, Wheat and Malt
Commitments and Contingencies Disclosure [Line Items]
Number of suppliers | vendor	3
Purchase commitments outstanding	$ 21,300
Annual commitement for purchases	1,000
Hops
Commitments and Contingencies Disclosure [Line Items]
Purchase commitments	31,000
Hops | Barley and Wheat
Commitments and Contingencies Disclosure [Line Items]
Contractual obligations	52,300
Advertising contract [Member]
Commitments and Contingencies Disclosure [Line Items]
Contractual obligations	62,600
Other Ingredients [Member]
Commitments and Contingencies Disclosure [Line Items]
Contractual obligations	35,800
Other Commitments
Commitments and Contingencies Disclosure [Line Items]
Contractual obligations	$ 12,900