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Note 8 - Loan and Credit Agreements - Summary Of Term Debt (Details) - USD ($)
Aug. 31, 2017
Nov. 30, 2016
Term debt $ 3,261,486 $ 3,911,000
Less current portion of term debt 2,374,665 1,807,937
Term debt of discontinued operations 618,016 715,945
Term debt, excluding current portion 268,805 1,387,118
US Bank Loan 2 [Member]    
Term debt 546,392 632,126
US Bank Loan 3 [Member]    
Term debt 618,016 715,945
US Bank Loan 4 [Member]    
Term debt 574,125 808,096
US Bank Loan 5 [Member]    
Term debt 238,945 337,147
US Bank Loan 6 [Member]    
Term debt 874,263 904,751
Iowa Finance Authority Term Loan [Member]    
Term debt $ 409,745 $ 512,935