Leases - Schedule of Future Leases Obligations (Parenthetical) (Detail)	Dec. 28, 2016
Minimum [Member]
Future Lease Payments Due [Line Items]
Imputed interest rate	11.00%
Maximum [Member]
Future Lease Payments Due [Line Items]
Imputed interest rate	14.80%

The percentage points added to the reference rate to compute the variable rate on the lessee's capital lease.

No definition available.

Name:	us-gaap_CapitalLeasesOfLesseeContingentRentalsBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant