Note 2 - Business Acquisition - Allocation of Estimated Purchase Price of Schroff Technologies International, Inc. (Details) - USD ($)	Oct. 31, 2022	Mar. 01, 2022	Oct. 31, 2021
Goodwill	$ 8,085,000		$ 2,467,000
Schrofftech [Member]
Current assets		$ 6,620,000
Property and equipment		198,000
Intangible assets		13,840,000
Goodwill		5,617,000
Non-interest bearing liabilities		(1,800,000)
Net assets acquired at fair value		$ 24,475,000

Amount of noninterest bearing liabilities assumed at the acquisition date.

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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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