Long-term debt - Summary of Long Term Debt (Parenthetical) (Detail) - USD ($)	12 Months Ended
Mar. 30, 2019	Mar. 31, 2018
Debt Instrument [Line Items]
Net of deferred financing costs	$ 600,000	$ 700,000
Term Loan from Investissement Quebec Prime Plus Seven Percent [Member]
Debt Instrument [Line Items]
Annual rate of prime plus	7.00%	7.00%
Balance of term loan	$ 5,000,000	$ 5,000,000
Line of Credit Facility Repayment Date	Jun. 05, 2019
Term Loan from Investissement Quebec Prime Plus Ten Percent [Member]
Debt Instrument [Line Items]
Annual rate of prime plus	10.00%	10.00%
Balance of term loan	$ 2,000,000	$ 2,000,000
Line of Credit Facility Repayment Date	Jun. 05, 2019
Capital Lease Obligations [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage Rate	3.60%	3.60%
Capital Lease Obligations [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage Rate	25.80%	25.80%
Cash Contribution one [Member] \| Montel [Member]
Debt Instrument [Line Items]
Interest on Cash advances	11.00%	11.00%
Cash received from related party	$ 1,500,000	$ 1,500,000
Cash Contribution Two [Member] \| Montel [Member]
Debt Instrument [Line Items]
Interest on Cash advances	11.00%	11.00%
Cash received from related party	$ 2,500,000	$ 2,500,000
Term Loan Facility Repayable At October Two Thousand Twenty Two [Member] \| Term Loan From Crystal Financial LLC CDOR Plus Eight Point Two Five Percent [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage Rate	8.25%
Net of deferred financing costs	$ 378,000

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Line Of Credit Facility Repayment Date

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- Definition

The percentage points added to the reference rate to compute the variable rate on the lessor's capital lease (sales-type and direct financing leases).

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Contractual interest rate for funds borrowed, under the debt agreement.

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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 cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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