Note 2 - Restatement of Previously Reported Consolidated Financial Statements (Detail) - Consolidated Balance Sheet (USD $) In Thousands, unless otherwise specified	Aug. 26, 2012	May 27, 2012
Investment in non-public company, fair value	$ 25,796	$ 21,500
Total Assets	270,860	277,692
Deferred taxes – noncurrent	19,979	18,037
Retained earnings	34,188	29,822
Total Stockholders’ Equity	155,114	149,742
Total Equity	157,027	151,558
Total Liabilities and Stockholders’ Equity	270,860	277,692
Previously Reported [Member]
Investment in non-public company, fair value	22,896
Total Assets	267,960
Deferred taxes – noncurrent	18,906
Retained earnings	32,361
Total Stockholders’ Equity	153,287
Total Equity	155,200
Total Liabilities and Stockholders’ Equity	267,960
Adjustment [Member]
Investment in non-public company, fair value	2,900
Total Assets	2,900
Deferred taxes – noncurrent	1,073
Retained earnings	1,827
Total Stockholders’ Equity	1,827
Total Equity	1,827
Total Liabilities and Stockholders’ Equity	2,900
Restatement [Member]
Investment in non-public company, fair value	25,796
Total Assets	270,860
Deferred taxes – noncurrent	19,979
Retained earnings	34,188
Total Stockholders’ Equity	155,114
Total Equity	157,027
Total Liabilities and Stockholders’ Equity	$ 270,860

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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- Definition

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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