Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.

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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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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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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).

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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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Number of additional shares authorized for issuance under an established share-based compensation plan.

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

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Stock-Based Compensation - Plan (Details) - USD ($)				12 Months Ended
Stock-Based Compensation - Plan (Details) - USD ($)	May 10, 2017	Apr. 12, 2017	Jul. 26, 2016	Mar. 26, 2017	Mar. 27, 2016	Mar. 29, 2015	May 30, 2017	Jul. 25, 2016
Stock-based compensation
Income tax benefit from share-based compensation (in dollars)				$ 181,900	$ 290,100	$ 441,300
Options Granted (in shares)				410,000	100,000
Performance Stock Units
Stock-based compensation
PSUs forfeited/cancelled (in shares)				148,154	80,268	78,939
Granted (in shares)				207,000	103,000	91,000
Stock Options
Stock-based compensation
Options Granted (in shares)				510,000
1994 Plan
Stock-based compensation
Number of additional shares authorized (in shares)			650,000
Number of shares authorized (in shares)			4,203,125					3,553,125
Number of shares available for grant (in shares)				567,450
Selling, general and administrative expenses
Stock-based compensation
Stock-based compensation (in dollars)				$ 434,400	$ 729,000	$ 1,161,300
Subsequent Event \| Performance Stock Units
Stock-based compensation
PSUs forfeited/cancelled (in shares)	162,500
Subsequent Event \| 1994 Plan
Stock-based compensation
Number of shares available for grant (in shares)							445,950
Subsequent Event \| Select Key Employees \| Stock Options
Stock-based compensation
Options Granted (in shares)		190,000
Subsequent Event \| Award Date May 10, 2017 \| Performance Stock Units
Stock-based compensation
Granted (in shares)	76,000
Subsequent Event \| Award Date May 10, 2017 \| Non-employee director \| RSU awards
Stock-based compensation
Granted (in shares)	18,000