v2.4.0.6

Employee Retirement Plans - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Sep. 29, 2012
Anticipates payments SRP and ARP | $ 1,608
Associates retirement plan [Member] |
Contributions made into the ARP | 296
Supplemental retirement plans [Member] |
Contributions made to participants in the SRP | $ 164

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- Definition Defined Benefit Plan Expected Future Benefit Payments Current Year + References No definition available. + Details
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Namespace Prefix: | dfz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Employer Contribution To Defined Pension Plans + References No definition available. + Details
Name: | dfz_EmployerContributionToDefinedPensionPlans
Namespace Prefix: | dfz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Payments Under Non Qualified Pension Plan By Employer + References No definition available. + Details
Name: | dfz_PaymentsUnderNonQualifiedPensionPlanByEmployer
Namespace Prefix: | dfz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration