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Leases - Schedule of Future Minimum Lease Payments under Non-Cancelable Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 27, 2014
Leases [Abstract]  
Fiscal Year 2015 $ 1,100us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
Fiscal Year 2016 1,400us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
Fiscal Year 2017 500us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
Fiscal Year 2018 300us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
Total minimum lease payments $ 3,300us-gaap_OperatingLeasesFutureMinimumPaymentsDue