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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Expiration Period From Vesting Date

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Options Expirations Period

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Options Settled In Cash.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Stock Appreciation Rights Exercisable Weighted Average Exercise Price

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- Definition

It represents percentage of outstanding stock option fully vested

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Settled in Cash Per Share

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

Number of warrants or rights outstanding.

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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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.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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

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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).

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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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- 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.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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).

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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- Definition

The weighted average of per share prices paid for shares purchased on the open market for issuance to employees under the plan.

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- Definition

Amount of capitalized and expensed compensation cost from equity-based compensation arrangements.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Benefit Plans and Stock-Based Compensation - Additional Information (Detail) - USD ($)			9 Months Ended	12 Months Ended
	Sep. 14, 2018	Nov. 15, 2016	Sep. 07, 2017	Mar. 30, 2019	Mar. 31, 2018	Mar. 25, 2017	Mar. 26, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding				741,060	813,666	874,162	666,162
Outstanding warrants				382,693
Weighted average exercise price				$ 3.42
Warrant expiry date				Aug. 20, 2022
Percentage of Outstanding Stock Options Fully Vested				100.00%
Common Stock Voting Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation cost for recognized expenses				$ 10,000	$ 50,000	$ 120,000
Common Stock Voting Shares [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance				1,796,088
Amended Birks Employee Stock Option Plan [Member] \| Common Stock Voting Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price				$ 1.05
Options granted				3,060	5,666	6,162
Compensation expense				$ 0	$ 0	$ 0
Stock Compensation Plan [Member] \| Common Stock Voting Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock option description				Birks ESOP
Omnibus LTIP [Member] \| Common Stock Voting Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding				168,000
Vesting period				3 years
Exercise price				$ 1.43
Expiration period				10 years
Weighted Average Grant Date Fair Value				$ 1.34
Dividend yield				0.00%
Expected volatility				114.63%
Risk free interest rate				2.20%
Weighted average expected term				10 years
Intrinsic value of outstanding options				$ 0
Unrecognized compensation, non-vested portion of stock option				21,000
Total compensation cost for recognized expenses				$ 68,000	$ 179,000	$ 85,000
Shares reserved for issuance				1,000,000
Omnibus LTIP [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Units granted		121,500
Number of shares outstanding				102,000	112,000
Expiration period following vesting date		1 year
Omnibus LTIP [Member] \| Deferred Stock Units Dsu [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted	133,588	55,944	74,466
Outstanding shares				257,005	130,410
Omnibus LTIP [Member] \| Restricted Stock Units And Deferred Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense				$ 146,000	$ 81,000
Share based compensation recognized liability				$ 272,000	$ 126,000
Mayors Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding				0	41	627
Compensation expense				$ 0	$ 0	$ 0
Options settled in cash				41	586
Options settled in cash per share				$ 0.78
Long Term Incentive Plan [Member] \| Common Stock Voting Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long term incentive plan stock appreciation rights, weighted average exercise price				$ 1.10
Options outstanding				570,000
Stock options issued				0	0	0
Unrecognized compensation, non-vested portion of stock option				$ 0
Long Term Incentive Plan [Member] \| Stock Appreciation Rights (SARs) [Member] \| Common Stock Voting Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercisable				110,000