Note 2 - Significant Accounting Policies - Inventories (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Raw materials	$ 12,499	$ 13,859
Work in process	211	592
Finished goods	375	798
Subtotal	13,085	15,249
Less allowance	928	751
Inventories, net	$ 12,157	$ 14,498

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

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

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