Note 5 - Inventory - Major Classes of Inventory (Details) - USD ($)	May 31, 2018	Nov. 30, 2017
Raw materials	$ 8,293,049	$ 8,731,985
Work in process	252,598	460,687
Finished goods	4,839,361	5,395,353
Gross inventory	13,385,008	14,588,025
Less: Reserves	(2,655,936)	(2,621,303)
Net Inventory	$ 10,729,072	$ 11,966,722

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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