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Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Detail) - Summary of fair value of assets and liabilities measure on recurring basis: (USD $) In Thousands, unless otherwise specified | Aug. 26, 2012 | May 27, 2012 | Apr. 23, 2012
--- | --- | --- | ---
Investment in private company | $ 25,796 | $ 21,500 |
Contingent consideration |  |  | (3,926)
Fair Value at August 26, 2012 [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Marketable securities | 756 |  |
Total | 756 |  |
Fair Value at August 26, 2012 [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Interest rate swap | 305 |  |
Total | 305 |  |
Fair Value at August 26, 2012 [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Investment in private company | 25,796 |  |
Total | 25,796 |  |
Contingent consideration | 3,956 |  |
Total | 3,956 |  |
Fair Value at May 27, 2012 [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Interest rate swap |  | 347 |
Total |  | 347 |
Fair Value at May 27, 2012 [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Investment in private company |  | 21,500 |
Total |  | 21,500 |
Contingent consideration |  | 3,926 |
Total |  | $ 3,926 |

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