Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended				1 Months Ended	9 Months Ended	12 Months Ended		1 Months Ended
	May 28, 2013	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Dec. 29, 2012	Sep. 28, 2013 Credit Agreement	May 28, 2013 Damage Award	Sep. 28, 2013 Damage Award	Dec. 31, 2007 Damage Award	Mar. 31, 2007 Damage Award	May 28, 2013 Prejudgment Interest	May 28, 2013 Attorney Fees and Post-judgment Interest	Sep. 28, 2013 Guarantee Payment Of Insurance Claims	Sep. 28, 2013 Current Investments	Sep. 28, 2013 Non-Current Investments
Commitments and Contingencies Disclosure [Line Items]
Investments providing collateral for letters of credit to guarantee insurance claims															$ 30,477,000	$ 31,251,000
Cash equivalents providing collateral for letters of credit to guarantee insurance claims															4,091,000
Total non-current investments																71,806,000
Letters of credit outstanding							34,751,000							59,646,000
Aggregate damage awarded	55,200,000							40,200,000	60,700,000			1,000,000	14,000,000
Post-judgment interest rate													6.25%
Operating insurance and claims costs, production		13,386,000	8,010,000	37,040,000	28,411,000					5,000,000
Retained liability of self-insurance program											5,000,000
Other receivables		$ 77,169,000		$ 77,169,000		$ 55,278,000			$ 60,700,000