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Segmented Information - Schedule of Information Relating to Segments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 25, 2017	Mar. 26, 2016	Mar. 28, 2015
Segment Reporting Information [Line Items]
Sales to external customers	$ 286,921	$ 285,826	$ 301,637
Unadjusted gross profit	109,549	112,714	123,518
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Inter-segment sales	13,586	14,002	15,891
Retail Segment [Member]
Segment Reporting Information [Line Items]
Unadjusted gross profit	108,487	110,023	118,128
Retail Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales to external customers	283,807	281,940	293,146
Other Segments [Member]
Segment Reporting Information [Line Items]
Unadjusted gross profit	1,062	2,691	5,390
Other Segments [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Inter-segment sales	13,586	14,002	15,891
Other Segments [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales to external customers	$ 3,114	$ 3,886	$ 8,491

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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