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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. 25, 2023 | Mar. 26, 2022 | Mar. 27, 2021
Cash Settled Deferred Share Units [Member] |  |  |
Schedule Restricted Stock Options And Deferred Stock Units [Line Items] |  |  |
Beginning balance | 0 | 689,012 | 465,134
Grants of new units | 35,584 | 61,470 | 223,878
Converted to equity-settled awards |  | (750,482) |
Ending balance | 35,584 | 0 | 689,012
Cash Settled Restricted Stock Units [Member] |  |  |
Schedule Restricted Stock Options And Deferred Stock Units [Line Items] |  |  |
Beginning balance | 50,000 | 375,000 | 0
Grants of new units | 0 |  | 375,000
Converted to equity-settled awards |  | (325,000) |
Ending balance | 50,000 | 50,000 | 375,000
Equity Settled Deferred Share Units [Member] |  |  |
Schedule Restricted Stock Options And Deferred Stock Units [Line Items] |  |  |
Beginning balance | 750,482 | 0 |
Converted to equity-settled awards |  | 750,482 |
Ending balance |  | 750,482 | 0
Equity Settled Restricted Stock Units [Member] |  |  |
Schedule Restricted Stock Options And Deferred Stock Units [Line Items] |  |  |
Beginning balance | 325,000 | 0 |
Converted to equity-settled awards |  | 325,000 |
Ending balance |  | 325,000 | 0

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- Definition Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options, Converision to Equity Settled Awrds. + References No definition available. + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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