Net Income per Share - Additional Information (Detail)	3 Months Ended												12 Months Ended
	Dec. 28, 2019 Customer $ / shares		Sep. 28, 2019 $ / shares	[1]	Jun. 29, 2019 $ / shares	[1]	Mar. 30, 2019 $ / shares	Dec. 29, 2018 $ / shares	Sep. 29, 2018 $ / shares	[2]	Jun. 30, 2018 $ / shares	Mar. 31, 2018 $ / shares	Dec. 28, 2019 Customer $ / shares shares	Dec. 29, 2018 $ / shares shares	Dec. 30, 2017 $ / shares shares
Earnings Per Share Note [Line Items]
Net income per common share — basic | $ / shares	$ 1.13	[1]	$ 3.70		$ 2.39		$ 2.04	$ 1.88	$ 3.25		$ 1.99	$ 0.79	$ 9.26	$ 7.90	$ 8.18
Conversion ratio for Class B to Class A shares | Customer	1												1
Common Class A
Earnings Per Share Note [Line Items]
Net income per common share — basic | $ / shares													$ 9.26	$ 7.90	$ 8.18
Antidilutive securities excluded from computation of earnings per share | shares													23,000	100,000	785,000
Common Class A | Performance-Based Awards
Earnings Per Share Note [Line Items]
Number of shares not included because the performance criteria was not expected to be met | shares													10,000	10,000	36,000

[1] During the second, third and forth quarter of 2019, the Company recorded $X million, $X million and $X million in non-reoccurring transaction fees related to the Dogfish Head Transaction, respectively.

[2] During the third quarter of 2018, the Company recorded a $4.5 million tax benefit related to tax accounting method changes.