Commitments and Contingencies - Additional Information (Detail)	Sep. 25, 2021 USD ($)
Current Investments | Collateral Pledged [Member]
Commitments and Contingencies Disclosure [Line Items]
Investments providing collateral for letters of credit to guarantee insurance claims	$ 36,644,000
Non-Current Investments
Commitments and Contingencies Disclosure [Line Items]
Total non-current investments	136,157,000
Non-Current Investments | Collateral Pledged [Member]
Commitments and Contingencies Disclosure [Line Items]
Investments providing collateral for letters of credit to guarantee insurance claims	40,505,000
Revolving Credit Facility
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	33,577,000
Guarantee Payment of Insurance Claims
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	$ 69,434,000