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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
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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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- 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 + Details
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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 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(02) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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