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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. 23, 2014
Accounting Policies [Abstract] |
Schedule of Effect of Significant Unobservable Inputs for Investement [Table Text Block] |
| At February 23, 2014 | At May 26, 2013
Annual consolidated revenue growth rates |  | 4% |  | 3% | to | 9%
Annual consolidated expense growth rates | 3% | to | 4% | 3% | to | 8%
Consolidated income tax rate |  | 15% |  |  | 15% |
Consolidated discount rates | 16% | to | 22% | 18% | to | 28%
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 23, 2014 |
10% increase in annual revenue growth rates |  | $ | 2,900 |
10% increase in annual expense growth rates |  | $ | (2,700 | )
10% increase in income tax rates |  | $ | (100 | )
10% increase in discount rate |  | $ | (1,600 | )
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] |
|  | Fair Value at February 23, 2014 |  |  | Fair Value at May 26, 2013 |
Assets: |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Marketable securities |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 1,545 |  |  | $ | - |  |  | $ | - |
Investment in private company |  |  | - |  |  |  | - |  |  |  | 37,700 |  |  |  | - |  |  |  | - |  |  |  | 29,600 |
Total |  | $ | - |  |  | $ | - |  |  | $ | 37,700 |  |  | $ | 1,545 |  |  | $ | - |  |  | $ | 29,600 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swap |  | $ | - |  |  | $ | 67 |  |  | $ | - |  |  | $ | - |  |  | $ | 163 |  |  | $ | - |
Total |  | $ | - |  |  | $ | 67 |  |  | $ | - |  |  | $ | - |  |  | $ | 163 |  |  | $ | - |

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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=25499696&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 + Details
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