Commitments and Contingencies - Additional Information (Detail)	Sep. 24, 2016 USD ($)
Revolving Credit Facility
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	$ 35,601,000
Guarantee Payment Of Insurance Claims
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	61,110,000
Current Investments
Commitments and Contingencies Disclosure [Line Items]
Investments providing collateral for letters of credit to guarantee insurance claims	56,679,000
Non-Current Investments
Commitments and Contingencies Disclosure [Line Items]
Investments providing collateral for letters of credit to guarantee insurance claims	11,221,000
Total non-current investments	$ 53,002,000