Note 2 - Significant Accounting Policies - Inventories (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Raw materials	$ 13,909	$ 12,499
Work in process	426	211
Finished goods	527	375
Subtotal	14,862	13,085
Less allowance	1,101	928
Inventories, net	$ 13,761	$ 12,157

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 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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