Note 7 - Loan and Credit Agreements (Details) - Summary Of Term Debt (USD $)	Feb. 28, 2014	Nov. 30, 2013
Note 7 - Loan and Credit Agreements (Details) - Summary Of Term Debt [Line Items]
Long-term Debt	$ 7,172,594	$ 7,480,923
Less current portion of term debt	1,228,581	1,228,964
Term debt, excluding current portion	5,944,013	6,251,959
US Bank Loan 1 [Member]
Note 7 - Loan and Credit Agreements (Details) - Summary Of Term Debt [Line Items]
Long-term Debt	2,002,993	2,114,675
US Bank Loan 2 [Member]
Note 7 - Loan and Credit Agreements (Details) - Summary Of Term Debt [Line Items]
Long-term Debt	929,718	955,507
US Bank Loan 3 [Member]
Note 7 - Loan and Credit Agreements (Details) - Summary Of Term Debt [Line Items]
Long-term Debt	1,055,890	1,085,350
US Bank Loan 4 [Member]
Note 7 - Loan and Credit Agreements (Details) - Summary Of Term Debt [Line Items]
Long-term Debt	1,623,070	1,693,752
US Bank Loan 5 [Member]
Note 7 - Loan and Credit Agreements (Details) - Summary Of Term Debt [Line Items]
Long-term Debt	678,218	707,719
Iowa Finance Authority [Member]
Note 7 - Loan and Credit Agreements (Details) - Summary Of Term Debt [Line Items]
Long-term Debt	873,022	904,662
IDED [Member]
Note 7 - Loan and Credit Agreements (Details) - Summary Of Term Debt [Line Items]
Long-term Debt	7,241	14,375
IDED Note 2 [Member]
Note 7 - Loan and Credit Agreements (Details) - Summary Of Term Debt [Line Items]
Long-term Debt	$ 2,442	$ 4,883