Capital Transactions - Additional Information (Detail) $ / shares in Units, $ in Thousands		12 Months Ended
	Apr. 30, 2008	Dec. 29, 2019 USD ($) Vote Stock $ / shares	Dec. 30, 2018 USD ($) $ / shares	Dec. 31, 2017 USD ($) $ / shares	Dec. 28, 2008
Capital Transactions [Line Items]
Share based compensation		$ 2,045	$ 5,606	$ 7,922
Number of classes of common stock outstanding | Stock		2
Dividend is declared and paid on the Common Stock | $ / shares		$ 1.00	$ 1.00	$ 1.00
Payment of dividend		$ 9,369	$ 9,353	$ 9,328
Number of votes per share | Vote		1
Long-Term Performance Equity Plan [Member]
Capital Transactions [Line Items]
Award settled in cash or shares, average closing prices of shares during trading days of performance period		20 days
Long-Term Performance Equity Plan [Member] | Selling, Delivery and Administrative Expenses [Member]
Capital Transactions [Line Items]
Share based compensation		$ 12,900	$ 2,000
Class B Common Stock [Member]
Capital Transactions [Line Items]
Performance unit award agreement expiration period	2018				2018
Dividend is declared and paid on the Common Stock | $ / shares		$ 1.00	$ 1.00	$ 1.00
Number of votes per share | Vote		20