Inventories (Detail) - USD ($) $ in Thousands	May 31, 2021	Feb. 28, 2021
Inventory [Line Items]
Raw materials	$ 2,880	$ 2,888
Work-in-process	933	1,166
Finished goods	929	771
Inventory, Gross	4,742	4,825
Reserves for obsolescence	(813)	(798)
Inventory, Net	$ 3,929	$ 4,027

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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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 of valuation reserve for inventory.

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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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