Inventories (Detail) - USD ($) $ in Thousands	Feb. 28, 2021	Feb. 29, 2020
Inventory [Line Items]
Raw materials	$ 2,888	$ 3,497
Work-in-process	1,166	773
Finished goods	771	1,006
Inventory, Gross	4,825	5,276
Reserves for obsolescence	(800)	(800)
Inventory, Net	$ 4,027	$ 4,480

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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