Note 8 - Loan and Credit Agreements - Summary Of Term Debt (Details) (USD $)	Nov. 30, 2014	Nov. 30, 2013
Term debt	$ 7,233,226us-gaap_LongTermDebt	$ 7,480,923us-gaap_LongTermDebt
Current portion of term debt	1,283,897us-gaap_LongTermDebtCurrent	1,228,964us-gaap_LongTermDebtCurrent
Term debt, excluding current portion	5,949,329us-gaap_LongTermDebtNoncurrent	6,251,959us-gaap_LongTermDebtNoncurrent
IDEA Note 1 [Member]
Term debt		4,883
IDED [Member]
Term debt		14,375
Iowa Finance Authority [Member]
Term debt	777,689	904,662
US Bank Loan 1 [Member]
Term debt	1,662,311	2,114,675
US Bank Loan 2 [Member]
Term debt	850,930	955,507
US Bank Loan 3 [Member]
Term debt	965,889	1,085,350
US Bank Loan 4 [Member]
Term debt	1,407,366	1,693,752
US Bank Loan 5 [Member]
Term debt	588,101	707,719
US Bank Loan 6 [Member]
Term debt	$ 980,940

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.

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- Definition

Amount of long-term debt, after 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)

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- Definition

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+ References

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