Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Machinery and plant equipment	$ 438,925	$ 420,486
Kegs	69,049	70,024
Land	22,295	22,295
Building and building improvements	112,912	112,508
Office equipment and furniture	24,307	22,412
Leasehold improvements	16,660	14,147
Property, Plant and Equipment, Gross, Total	684,148	661,872
Less accumulated depreciation	(299,868)	(253,461)
Property, plant and equipment, net	$ 384,280	$ 408,411