The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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Benefit Plans and Stock-Based Compensation - Summary of Stock Option Plans (Detail) (USD $)	1 Months Ended	12 Months Ended
	Mar. 30, 2013	Mar. 30, 2013	Mar. 31, 2012	Mar. 26, 2011	Mar. 27, 2010
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding	624,618	624,618	496,118	323,086	307,761
Options outstanding and exercisable Weighted average exercise price	$ 1.18	$ 1.18	$ 1.26	$ 1.39	$ 2.37
Mayors Stock Option Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding	9,081	9,081	217,746	224,240	269,265
Options outstanding and exercisable Weighted average remaining life (years)	1 year 9 months 18 days	1 year 9 months 18 days
Options outstanding and exercisable Weighted average exercise price	$ 7.18	$ 7.18	$ 6.06	$ 7.40	$ 11.55
Mayors Stock Option Plan [Member] \| Exercise Prices ($ 1.05) [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, Upper limit		$ 1.05
Number outstanding	1,260	1,260
Options outstanding and exercisable Weighted average remaining life (years)		7 years
Options outstanding and exercisable Weighted average exercise price	$ 1.05	$ 1.05
Mayors Stock Option Plan [Member] \| Exercise Prices ($ 6.00 - 9.00) [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, Lower limit		$ 6.00
Range of exercise price, Upper limit		$ 9.00
Number outstanding	7,821	7,821
Options outstanding and exercisable Weighted average remaining life (years)		1 year
Options outstanding and exercisable Weighted average exercise price	$ 8.16	$ 8.16