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Bank Indebtedness - Summary of Company's Senior Credit Facility (Detail) - Senior Secured Notes [Member] - USD ($) $ in Thousands	12 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	[1]
Line of Credit Facility [Line Items]
Maximum borrowing outstanding during the year	$ 55,596	$ 60,710
Average outstanding balance during the year	$ 44,772	$ 45,588
Weighted average interest rate for the year	3.90%	3.30%
Effective interest rate at year-end	4.20%	3.40%
[1] Recast (refer to note 1)

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- Definition

Average amount borrowed under the credit facility during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

The effective interest rate at the end of the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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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- Definition

Maximum amount borrowed under the credit facility at any time during the period.

+ References

No definition available.

+ Details

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