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Benefit plans and stock-based compensation (Tables) | 12 Months Ended
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Mar. 25, 2017
Birks Stock Option Plan [Member] |
Summary of Activity of Stock Option Plans and Arrangements | The following is a summary of the activity of Birks’ stock option plans and arrangements.
|  | Options |  |  | Weighted average exercise price |
Outstanding March 29, 2014 |  |  | 664,585 |  |  | $ | 1.21 |
Granted |  |  | 50,000 |  |  |  | 1.94 |
Exercised |  |  | (111,372 | ) |  |  | 1.04 |
Expired |  |  | (15,000 | ) |  |  | 7.73 |
Forfeited |  |  | (147,051 | ) |  |  | 1.10 |
Outstanding March 28, 2015 |  |  | 441,162 |  |  |  | 1.15 |
Granted |  |  | 235,000 |  |  |  | 0.78 |
Forfeited |  |  | (10,000 | ) |  |  | 1.10 |
Outstanding March 26, 2016 |  |  | 666,162 |  |  |  | 1.02 |
Granted |  |  | 218,000 |  |  |  | 1.43 |
Forfeited |  |  | (10,000 | ) |  |  | 0.78 |
Outstanding March 25, 2017 |  |  | 874,162 |  |  | $ | 1.13 |
Summary of Status of Stock Options | A summary of the status of Birks’ stock options at March 25, 2017 is presented below:
|  |  | Options outstanding |  |  | Options exercisable |
Exercise price |  |  | Number outstanding |  |  | Weighted average remaining life (years) |  |  | Weighted average exercise price |  |  | Number exercisable |  |  | Weighted average exercise price |
$ | 0.78 |  |  |  | 225,000 |  |  |  | 8.5 |  |  | $ | 0.78 |  |  |  | 74,996 |  |  | $ | — |
$ | 0.84 |  |  |  | 100,000 |  |  |  | 6.1 |  |  |  | 0.84 |  |  |  | 100,000 |  |  |  | 0.84 |
$ | 0.89 |  |  |  | 55,000 |  |  |  | 5.6 |  |  |  | 0.89 |  |  |  | 55,000 |  |  |  | 0.89 |
$ | 1.04-1.05 |  |  |  | 156,162 |  |  |  | 4.7 |  |  |  | 1.04 |  |  |  | 156,162 |  |  |  | 1.04 |
$ | 1.25-1.66 |  |  |  | 70,000 |  |  |  | 5.2 |  |  |  | 1.48 |  |  |  | 70,000 |  |  |  | 1.48 |
$ | 1.43 |  |  |  | 218,000 |  |  |  | 9.7 |  |  |  | 1.43 |  |  |  | — |  |  |  | — |
$ | 1.94 |  |  |  | 50,000 |  |  |  | 7.8 |  |  |  | 1.94 |  |  |  | 33,333 |  |  |  | 1.94 |
|  |  |  |  | 874,162 |  |  |  | 8.2 |  |  | $ | 1.13 |  |  |  | 489,491 |  |  | $ | 1.07 |
Mayors Stock Option Plan [Member] |
Summary of Status of Stock Options | A summary of the status of the option plans at March 25, 2017 is presented below:
Exercise price |  |  |  |  |  | Options outstanding and exercisable |
| Number outstanding |  |  | Weighted average remaining life (years) |  |  | Weighted average exercise price |
$ | 1.05 |  |  |  | 627 |  |  |  | 3.1 |  |  | $ | 1.05 |
Summary of Stock Option Activity | The following is a summary of the activity of Mayors stock option plans:
|  | Options |  |  | Weighted average exercise price |
Outstanding March 29, 2014 |  |  | 3,836 |  |  | $ | 5.19 |
Expired |  |  | (2,910 | ) |  |  | 6.51 |
Outstanding March 28, 2015 |  |  | 926 |  |  |  | 1.05 |
Expired |  |  | (299 | ) |  |  | 1.05 |
Outstanding March 26, 2016 and March 25, 2017 |  |  | 627 |  |  |  | 1.05 |

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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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