Schedule of Contractual Cash Obligations relating to Existing Capital Leases (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 23, 2012
Schedule of Capital Lease Obligations [Line Items]
One year	$ 1,685
Two years	1,565
Three years	1,497
Four years	9,636
Five years
Over 5 years
Total	14,383
Less: Interest on capital leases	649
Less: Current portion of capital leases	1,464
Long-tern portion of capital leases	$ 12,270

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date.

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Amount of minimum lease payments for capital leases.

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Amount of minimum lease payments maturing in the fifth fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the forth fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the third fiscal year following the latest fiscal year for capital leases.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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