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Note 7 - Loan and Credit Agreements (Detail) - Summary Of Term Debt (USD $) | Feb. 28, 2013 | Nov. 30, 2012 | May 31, 2012 | May 10, 2012 | Sep. 15, 2010 | May 31, 2010 | Jun. 07, 2007
--- | --- | --- | --- | --- | --- | --- | ---
Long Term Debt | $ 8,193,941 | $ 8,466,134 | $ 2,000,000 | $ 880,000 | $ 13,000 | $ 1,300,000 | $ 4,100,000
Less current portion of term debt | 1,180,751 | 1,165,177 |  |  |  |  |
Term debt, excluding current portion | 7,013,190 | 7,300,957 |  |  |  |  |
West Bank [Member] | Loan 1 [Member] |  |  |  |  |  |  |
Long Term Debt | 2,337,035 | 2,435,359 |  |  |  |  |
West Bank [Member] | Loan 2 [Member] |  |  |  |  |  |  |
Long Term Debt | 1,006,721 | 1,027,330 |  |  |  |  |
West Bank [Member] | Loan 3 [Member] |  |  |  |  |  |  |
Long Term Debt | 1,144,158 | 1,167,725 |  |  |  |  |
West Bank [Member] | Loan 4 [Member] |  |  |  |  |  |  |
Long Term Debt | 1,812,864 | 1,875,120 |  |  |  |  |
US Bank [Member] |  |  |  |  |  |  |
Long Term Debt | 794,989 | 823,555 |  |  |  |  |
Iowa Finance Authority [Member] |  |  |  |  |  |  |
Long Term Debt | 997,656 | 1,027,366 |  |  |  |  |
IDED [Member] | Loan 1 [Member] |  |  |  |  |  |  |
Long Term Debt | 35,146 | 41,866 |  |  |  |  |
IDED [Member] | Loan 2 [Member] |  |  |  |  |  |  |
Long Term Debt | 12,208 | 14,649 |  |  |  |  |
IDED [Member] | Loan 3 [Member] |  |  |  |  |  |  |
Long Term Debt | 48,830 | 48,830 |  |  |  |  |
West Union Community Development Corp [Member] |  |  |  |  |  |  |
Long Term Debt | $ 4,334 | $ 4,334 |  |  |  |  |

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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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