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Note 9 - Current Portion of Long-Term Liabilities (Details) - Current Portion of Long-Term Liabilities (USD $)
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Feb. 28, 2013
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May 31, 2012
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| Note 9 - Current Portion of Long-Term Liabilities (Details) - Current Portion of Long-Term Liabilities [Line Items] | ||||||||
| Current portion of long-term liabilties | $ 818,000 | $ 250,000 | ||||||
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KeHE Loan, Current Portion [Member]
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| Note 9 - Current Portion of Long-Term Liabilities (Details) - Current Portion of Long-Term Liabilities [Line Items] | ||||||||
| Current portion of long-term liabilties | 770,000 | [1] | 250,000 | [1] | ||||
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Term Loan, Settlement [Member]
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| Note 9 - Current Portion of Long-Term Liabilities (Details) - Current Portion of Long-Term Liabilities [Line Items] | ||||||||
| Current portion of long-term liabilties | $ 48,000 | [2] | [2] | |||||
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