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Bank Indebtedness - Additional Information (Detail) $ in Thousands, $ in Millions		12 Months Ended
	Oct. 23, 2017 USD ($)	Mar. 30, 2019 CAD ($)	Mar. 30, 2019 USD ($)	Feb. 20, 2019 USD ($)	Jan. 20, 2019 USD ($)	Jun. 29, 2018 USD ($)	Mar. 31, 2018 USD ($)
Line of Credit Facility [Line Items]
Bank indebtedness			$ 47,021				$ 36,925	[1]
Long-term Debt, Gross			47,600				37,600
Senior secured revolving credit facility, excess availability			14,400				19,900
Line of credit facility covenant terms cash minimum							8,500
Minimum excess availability percentage of borrowings		40.00%
Minimum excess availability percentage of line cap		25.00%
Mortgage on movable property (general) under the Civil Code (Quebec)		$ 200.0
Debt Issuance Costs, Net			$ 600				700
New Credit Facility [Member]
Line of Credit Facility [Line Items]
Minimum excess availability	$ 8,500
Senior secured credit facility	$ 85,000
New credit facility maturity date	Oct. 31, 2022
Total commitments	$ 13,000
Line of credit facility covenant terms cash minimum	$ 8,500						$ 8,500
Senior Secured Term Loan [Member]
Line of Credit Facility [Line Items]
Minimum excess availability						$ 8,500
Interest rate of CDOR plus spread						8.25%
Long-term senior secured term loan						$ 12,500
Senior secured revolving credit facility, seasonal availability block				$ 4,500	$ 9,500
Line of credit facility covenant terms cash minimum						$ 8,500
Maximum [Member]
Line of Credit Facility [Line Items]
Fixed charge coverage ratio		1.10
Maximum [Member] | New Credit Facility [Member]
Line of Credit Facility [Line Items]
Interest rate of CDOR plus spread	3.00%
Minimum [Member]
Line of Credit Facility [Line Items]
Fixed charge coverage ratio		1.00
Minimum [Member] | New Credit Facility [Member]
Line of Credit Facility [Line Items]
Interest rate of CDOR plus spread	1.50%
[1] Recast (refer to note 1)

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Mortgage loan related to property sales in noncash investing and financing activities.

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Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

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The portion of the carrying amount of short-term borrowings outstanding as of the balance sheet date, which accrues interest at a rate subject to change from time to time.

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