Note 10 - Loan and Credit Agreements - Summary of Term Debt (Details) - USD ($)	Nov. 30, 2017	Nov. 30, 2016
Term debt	$ 3,569,491	$ 3,911,001
Less current portion of term debt	221,230	1,807,937
Term debt of discontinued operations	599,584	715,946
Term debt, excluding current portion	2,748,677	1,387,118
US Bank Loan 1 [Member]
Term debt		632,126
US Bank Loan 2 [Member]
Term debt		715,946
US Bank Loan 3 [Member]
Term debt		808,096
US Bank Loan 4 [Member]
Term debt		337,147
US Bank Loan 5 [Member]
Term debt		904,751
Term Loan Due October 2037 [Member]
Term debt	2,595,007
Term Loan Due October 2019 [Member]
Term debt	599,584
Iowa Finance Authority Term Loan [Member]
Term debt	$ 374,900	$ 512,935

Amount classified as notes payable attributable to disposal group held for sale or disposed of.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. 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 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
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+ References

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-Name Accounting Standards Codification
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