Note 10 - Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 31, 2013	Mar. 25, 2012	Mar. 27, 2011	Jul. 31, 2012
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	34.00%
Deferred Tax Assets, Net	$ 825	$ 1,216
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	296	422
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	337	356
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	46	47	44
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	(34)
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority	$ 13			$ 129

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 109

-Paragraph 47

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-Subparagraph (SAB TOPIC 6.I)

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The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority.

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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