Commitments and Contingencies - Additional Information (Detail)	Dec. 29, 2018 USD ($)
Trade Letter of Credit
Commitments and Contingencies [Line Items]
Letter of credit to support purchase obligation	$ 5,475,000
Standby Letters of Credit
Commitments and Contingencies [Line Items]
Letter of credit to support purchase obligation	$ 12,950,000

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant