Note 3 - Stock-Based Compensation (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
Jun. 30, 2012	Jun. 25, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)	100,000
Share-based Compensation Arrangement by Share-based Payment Award, Performance Target Percentage	75.00%
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period (in Shares)	52,000
Estimated Probability Achievment of Performance Based Restricted Stock Awards Granted in FY 2012 and 2013	100.00%
Estimated Probability Achievment of Performance Based Restricted Stock Awards Granted in FY 2011	75.00%
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 0.8
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Share-based Compensation Arrangement By Share-based Payment Award Fair Value Assumptions Expiration Term	10 years
Less Than [Member]
Restricted Stock or Unit Expense	0.1	0.1
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options	0.1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	0.1
Proceeds from Stock Options Exercised	$ 0.1

The estimated probability of achievement for the performance-based restricted stock awards granted in fiscal year 2011

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The estimated probability of achievement for the performance-based restricted stock awards granted in fiscal years 2012

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Share-based Compensation Arrangement By Share-based Payment Award Fair Value Assumptions Expiration Term

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Percentage achieved to target level for performance-based restricted stock awards.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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Aggregate unrecognized cost of option awards made to employees under a stock option plan or plans, that have yet to vest.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

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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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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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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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Number of share instruments newly issued under a share-based compensation plan.

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