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Note 10 - Loan and Credit Agreements - Summary Of Term Debt (Details) - USD ($)
Nov. 30, 2016
Nov. 30, 2015
Term debt $ 3,911,001 $ 5,949,329
Less current portion of term debt 1,807,937 1,195,839
Notes Payable 715,946 842,768
Term debt, excluding current portion 1,387,118 3,910,722
US Bank Loan 1 [Member]    
Term debt 1,196,088
US Bank Loan 2 [Member]    
Term debt 632,126 743,149
US Bank Loan 3 [Member]    
Term debt 715,946 842,769
US Bank Loan 4 [Member]    
Term debt 808,096 1,112,205
US Bank Loan 5 [Member]    
Term debt 337,147 464,605
US Bank Loan 6 [Member]    
Term debt 904,751 943,381
Iowa Finance Authority Term Loan [Member]    
Term debt $ 512,935 $ 647,132