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Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Feb. 24, 2013
Schedule of Effect of Significant Unobservable Inputs for Investement [Table Text Block] |
|  | At February 24, 2013 |  |  | At May 27, 2012 |
Revenue growth rates |  | 3% | to | 12% |  |  | 3% | to | 24% |
Expense growth rates |  | 3% | to | 9% |  |  | 3% | to | 18% |
Income tax rates |  |  | 15% |  |  |  |  | 25% |  |
Discount rates |  | 19% | to | 29% |  |  | 14% | to | 21% |
Schedule of Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets [Table Text Block] |
|  | Impact on value of Windset investment as of February 24, 2013 |
10% increase in revenue growth rates |  | $ | 1,350 |
10% increase in expense growth rates |  | $ | (1,050 | )
10% increase in income tax rates |  | $ | (75 | )
10% increase in discount rates |  | $ | (825 | )
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] |
|  | Fair Value at February 24, 2013 |  |  | Fair Value at May 27, 2012 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Marketable securities |  | $ | 3,790 |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |
Investment in private company |  |  | - |  |  |  | - |  |  |  | 27,800 |  |  |  | - |  |  |  | - |  |  |  | 21,500 |
Total |  | $ | 3,790 |  |  | $ | - |  |  | $ | 27,800 |  |  | $ | - |  |  | $ | - |  |  | $ | 21,500 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 3,933 |
Interest rate swap |  |  | - |  |  |  | 203 |  |  |  | - |  |  |  | - |  |  |  | 347 |  |  |  | - |
Total |  | $ | - |  |  | $ | 203 |  |  | $ | - |  |  | $ | - |  |  | $ | 347 |  |  | $ | 3,933 |

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- Definition Schedule of Effect of significant unobservable inputs for investment. + References No definition available. + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258 + Details
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- Definition Tabular disclosure of a sensitivity analysis or stress test showing the hypothetical effect on the fair value of the transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) of two or more unfavorable variations from the expected levels for each key assumption that is reported, independently determined from any change in another key assumption, and a description of the objectives, methodology, and limitations of the sensitivity analysis or stress test. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107314-111719 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107314-111719 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 140 -Paragraph 17 -Subparagraph i(3) -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. + Details
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