Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended				0 Months Ended		12 Months Ended			1 Months Ended
	May 28, 2013	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013	Jun. 28, 2014 Revolving Credit Facility	Jul. 09, 2014 Subsequent Event Judicial Ruling	Sep. 23, 2011 Damage Award	Dec. 31, 2007 Damage Award	Jun. 28, 2014 Damage Award	Mar. 31, 2007 Damage Award	May 28, 2013 Prejudgment Interest	May 28, 2013 Attorney Fees and Post-judgment Interest	Jun. 28, 2014 Guarantee Payment Of Insurance Claims	Jun. 28, 2014 Current Investments	Jun. 28, 2014 Non-Current Investments
Commitments and Contingencies Disclosure [Line Items]
Investments providing collateral for letters of credit to guarantee insurance claims																$ 33,408,000	$ 34,600,000
Cash equivalents providing collateral for letters of credit to guarantee insurance claims																3,225,000
Total non-current investments																	70,124,000
Letters of credit outstanding							33,000,000								64,432,000
Aggregate damage awarded	55,200,000								40,200,000				1,000,000	14,000,000
Post-judgment interest rate														6.25%
Retained liability of self-insurance program												5,000,000
Operating insurance and claims costs, production		13,849,000	11,809,000	25,706,000	23,572,000					5,000,000
Agreed settlement amount for plaintiffs								42,000,000
Receivable from the third party insurance providers		54,615,000		54,615,000		73,903,000					40,500,000
Corresponding liability		$ 77,909,000		$ 77,909,000		$ 92,280,000					$ 40,500,000