Note 4 - Inventories - Components of Inventories (Details) - USD ($)	Jan. 31, 2019	Oct. 31, 2018
Finished goods	$ 6,479,017	$ 5,454,629
Work in process	3,635,301	3,877,670
Raw materials	9,071,998	7,871,145
Production supplies	299,240	271,311
Total	$ 19,485,556	$ 17,474,755

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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