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Long-term debt - Summary of Principal Payment on long Term Debt Including Obligation Under Capital Lease (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Mar. 31, 2012
Debt Disclosure [Abstract]
2014	$ 3,795
2015	3,182
2016	21,224
2017	1,183
2018	1,059
Thereafter	11,452
Long-term debt and Capital lease obligations	$ 41,895	$ 50,965

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- Definition

Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal After Year Five

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Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Five

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- Definition

Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Four

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- Definition

Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Three

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- Definition

Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Two

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- Definition

Long Term Debt And Capital Lease Obligations Repayments Of Principal In Next Twelve Months

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- Definition

Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section H

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