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Segmented Information - Schedule of Reconciliations of Segments Gross Profits and Certain Unallocated Costs to Consolidated Gross Profits (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 26, 2011
Segment Reporting [Abstract]
Unadjusted gross profit	$ 131,166	$ 139,694	$ 121,757
Inventory provisions	(2,763)	(2,998)	(3,034)
Other unallocated costs	(2,527)	(3,051)	(2,417)
Adjustment of intercompany profit	298	(415)	2
Adjusted gross profit	$ 126,174	$ 133,230	$ 116,308

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Intercompany Profit Adjustment

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Unadjusted Gross Profit

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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

-Publisher FASB

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The amount of the valuation account as of the balance sheet date which reduces the carrying amount of inventory to net realizable value; takes into consideration such factors as market value, excessive quantities based on expected sales, technological obsolescence, and shrinkage. May also provide for estimated product returns or price concessions pertaining to product cost.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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