Benefit Plans and Stock-Based Compensation - Summary of Birks' Restricted Stock Units And Deferred Share Units (Detail) - shares	12 Months Ended
Mar. 28, 2026	Mar. 29, 2025	Mar. 30, 2024
Cash Settled Deferred Share Units [Member]
Schedule Restricted Stock Options And Deferred Stock Units [Line Items]
Beginning balance	231,621	96,688	35,584
Grants of new units	245,454	143,829	70,000
Exercised	(61,094)	(8,896)	(8,896)
Ending balance	415,981	231,621	96,688
Cash Settled Restricted Stock Units [Member]
Schedule Restricted Stock Options And Deferred Stock Units [Line Items]
Beginning balance	0	0	50,000
Exercised		0	(50,000)
Ending balance	0	0	0
Equity Settled Deferred Share Units [Member]
Schedule Restricted Stock Options And Deferred Stock Units [Line Items]
Beginning balance	331,764	740,482	750,482
Exercised	(110,588)	(408,718)	(10,000)
Ending balance	221,176	331,764	740,482

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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