Inventories (Detail) - USD ($) $ in Thousands	Aug. 31, 2021	Feb. 28, 2021
Inventory [Line Items]
Raw materials	$ 2,979	$ 2,888
Work-in-process	882	1,166
Finished goods	481	771
Inventory, Gross	4,342	4,825
Reserves for obsolescence	(702)	(798)
Inventory, Net	$ 3,640	$ 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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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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