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Note 10 - Loan and Credit Agreements - Summary Of Term Debt (Details) (Parentheticals) - USD ($) | 12 Months Ended
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Nov. 30, 2016 | Nov. 30, 2015
US Bank Loan 1 [Member] |  |
Installments |  | $ 42,500
Interest rate |  | 2.98%
US Bank Loan 2 [Member] |  |
Installments | $ 11,000 | $ 11,000
Interest rate | 2.98% | 2.98%
US Bank Loan 3 [Member] |  |
Installments | $ 12,550 | $ 12,550
Interest rate | 2.98% | 2.98%
US Bank Loan 4 [Member] |  |
Installments | $ 27,800 | $ 27,800
Interest rate | 2.98% | 2.98%
US Bank Loan 5 [Member] |  |
Installments | $ 11,700 | $ 11,700
Interest rate | 3.15% | 3.15%
US Bank Loan 6 [Member] |  |
Installments | $ 5,556 | $ 5,556
Interest rate | 2.98% | 2.98%
Iowa Finance Authority Term Loan [Member] |  |
Installments | $ 12,500 | $ 12,500
Interest rate | 2.75% | 2.75%

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