Commitments and Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended
	Sep. 26, 2015	Dec. 27, 2014
Commitments And Contingencies [Line Items]
Outstanding contracts and purchase orders for capital projects	$ 13,700,000
Undiscounted maximum amount for lease guarantees	21,200,000
Future guarantee annual payments	$ 200,000
Minimum [Member]
Commitments And Contingencies [Line Items]
Operating lease agreements range	5.00%
Operating lease expiration term	5 years
Operating lease expiration dates	2015
Maximum [Member]
Commitments And Contingencies [Line Items]
Operating lease agreements range	25.00%
Operating lease expiration term	7 years
Operating lease expiration dates	2022
Multiemployer Pension Plans [Member]
Commitments And Contingencies [Line Items]
Estimated withdrawal liability	$ 6,900,000
Withdrawal liability		$ 2,800,000
Voluntary withdrawal payment on liability or obligation	800,000
Multiemployer Pension Plans [Member] | Current Period Estimates [Member]
Commitments And Contingencies [Line Items]
Estimated withdrawal liability	$ 6,100,000