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Benefit Plans and Stock-Based Compensation - Additional Information (Detail) | 12 Months Ended |
--- | --- | ---
Mar. 28, 2015 USD ($) $ / shares shares | Mar. 29, 2014 USD ($) $ / shares shares | Mar. 30, 2013 USD ($) shares | Mar. 31, 2012 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding | 441,162 | 664,585 | 624,618 | 496,118
Share-based payment arrangements | $ | $ 0 | $ 0 | $ 0 |
Outstanding warrants | 382,693 |  |  |
Weighted average exercise price | $ / shares | $ 3.42 |  |  |
Warrant expiry date | Aug. 20, 2022 |  |  |
Payment portion of LTCIP value at the end of first three year | 0.33 |  |  |
Payment portion of LTCIP value thereafter | 0.33 |  |  |
Maximum percentage of CO's total earnings before tax for three years | 10.00% |  |  |
Target incentive compensation level for the first three year cycle | $ | $ 2,067,000 |  |  |
Percentage of total payout capped | 200.00% |  |  |
Share Based Compensation Payout Ratio Under Long Term Cash Incentive Plan | 0.33 |  |  |
Percentage of amount payable at the end of three year | 50.00% |  |  |
Percentage Of Remaining Amount Payable One Year Thereafter | 50.00% |  |  |
Class A Voting Share [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Intrinsic value of outstanding options | $ | $ 137,000 |  |  |
Unrecognized compensation, non-vested portion of stock option | $ | 100,000 |  |  |
Total compensation cost for recognized earning | $ | $ 76,000 | $ 143,000 | $ 118,000 |
Amended Birks Employee Stock Option Plan [Member] | Class A Voting Share [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Exercise price | $ / shares | $ 1.05 |  |  |
Options granted | 6,162 | 6,454 | 6,674 |
Compensation expense | $ | $ 0 | $ 0 | $ 0 |
Stock Compensation Plan [Member] | Class A Voting Share [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Employee stock option description | Birks ESOP |  |  |
Combined Equity Award Plans [Member] | Class A Voting Share [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Authorized issuance of shares | 1,304,025 |  |  |
Mayors Stock Option Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options outstanding | 926 | 3,836 | 9,081 | 217,746
Compensation expense | $ | $ 0 | $ 0 | $ 0 |
Options outstanding, Weighted average remaining life (years) | 5 years 1 month 6 days |  |  |
Employee Stock Purchase Plans [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Additional shares issued | 0 | 0 | 0 |
Additional shares to be issued under this plan | No additional shares will be issued under this plan |  |  |
Employee Stock Purchase Plans [Member] | Class A Voting Share [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Authorized issuance of shares | 100,000 |  |  |
Common stock purchase percent | 85.00% |  |  |
Outstanding shares | 99,995 |  |  |
Profit Sharing 401 K Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Percentage of employee contribution | 25.00% |  |  |
Percentage of employee compensation | 4.00% |  |  |
Company matching contributions after exercise of its right to cancel future matching contributions | $ | $ 0 | $ 0 | $ 0 |
Long Term Incentive Plan [Member] | Class A Voting Share [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Authorized issuance of shares | 900,000 |  |  |
Long term incentive plan stock appreciation rights, weighted average exercise price | $ / shares | $ 1.77 |  |  |
Options outstanding | 435,000 |  |  |
Stock options issued | 50,000 | 165,000 |  |
Vesting period | 3 years |  |  |
Exercise price | $ / shares | $ 1.94 | $ 1.16 |  |
Expiration period | 10 years |  |  |
Weighted Average Grant Date Fair Value | $ / shares | $ 1.71 | $ 1.02 |  |
Dividend yield | 0.00% |  |  |
Expected volatility | 94.80% | 94.50% |  |
Risk free interest rate | 2.04% | 2.19% |  |
Weighted average expected term | 10 years |  |  |
Long Term Incentive Plan [Member] | Stock Appreciation Rights [Member] | Class A Voting Share [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock appreciation rights granted | 125,320 |  |  |

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- Definition Description of the plan, including the basis for determining contributions, the employee groups covered, and the nature and effect of significant matters affecting comparability of information for all periods presented. For leveraged ESOPs and pension reversion ESOPs, the description generally includes the basis for releasing shares and how dividends on allocated and unallocated shares are used. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 + 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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