Fair Value of Financial Instruments - Debt, Deferred Compensation Assets, Deferred Compensation Liabilities and Commodity Hedging Agreements (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2014	Dec. 29, 2013	Mar. 31, 2013
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Public debt securities	$ (373,613)	$ (373,566)	$ (373,430)
Deferred compensation plan assets	17,453	17,098	14,216
Deferred compensation plan liabilities	(17,453)	(17,098)	(14,216)
Non-public variable rate debt	(60,000)	(25,000)	(85,000)
Carrying Amount [Member] | Commodity Hedging Agreements [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Commodity hedging agreements	781	0	10
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Public debt securities	(411,564)	(409,434)	(421,466)
Deferred compensation plan assets	17,453	17,098	14,216
Deferred compensation plan liabilities	(17,453)	(17,098)	(14,216)
Non-public variable rate debt	(60,000)	(25,000)	(85,000)
Fair Value [Member] | Commodity Hedging Agreements [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Commodity hedging agreements	$ 781	$ 0	$ 10