Note 4 - Inventories - Components of Inventories (Details) - USD ($)	Jul. 31, 2018	Oct. 31, 2017
Finished goods	$ 4,763,778	$ 5,869,269
Work in process	3,490,700	2,507,434
Raw materials	8,798,742	8,108,433
Production supplies	260,224	296,313
Total	$ 17,313,444	$ 16,781,449

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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