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Benefit Plans and Stock-Based Compensation - Summary of Birks' Restricted Stock Units And Deferred Share Units (Detail) - shares	12 Months Ended
	Mar. 30, 2024	Mar. 25, 2023	Mar. 26, 2022
Cash Settled Deferred Share Units [Member]
Schedule Restricted Stock Options And Deferred Stock Units [Line Items]
Beginning balance	35,584	0	689,012
Grants of new units	70,000	35,584	61,470
Converted to equity-settled awards			(750,482)
Exercised	(8,896)
Ending balance	96,688	35,584	0
Cash Settled Restricted Stock Units [Member]
Schedule Restricted Stock Options And Deferred Stock Units [Line Items]
Beginning balance	50,000	50,000	375,000
Converted to equity-settled awards			(325,000)
Exercised	(50,000)	0
Ending balance	0	50,000	50,000
Equity Settled Deferred Share Units [Member]
Schedule Restricted Stock Options And Deferred Stock Units [Line Items]
Beginning balance	750,482
Exercised	(10,000)
Ending balance	740,482	750,482
Equity Settled Restricted Stock Units [Member]
Schedule Restricted Stock Options And Deferred Stock Units [Line Items]
Beginning balance	325,000	325,000
Exercised	(325,000)
Ending balance	0	325,000	325,000

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Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options, Converision to Equity Settled Awrds.

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- Definition

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).

+ 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)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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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.

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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

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-Section 50
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-Subparagraph (c)(2)(ii)
-Publisher FASB
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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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-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(02)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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