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Operating Leases - Schedule of Future Minimum Rental Payments Under Operating Leases (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Dec. 28, 2014
Leases [Abstract]
Minimum sublease rentals due in future	$ 0.6us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals

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- Details

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Namespace Prefix:	us-gaap_
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- Definition

Contractually required future rental payments receivable on noncancelable subleasing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

+ Details

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Period Type:	instant