Note 9 - Property and Equipment - Location of Property and Equipment (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Net book value of property and equipment	$ 4,272	$ 4,751
UNITED STATES
Net book value of property and equipment	3,068	3,133
Europe [Member]
Net book value of property and equipment	46	87
SINGAPORE
Net book value of property and equipment	332	480
MALAYSIA
Net book value of property and equipment	$ 826	$ 1,051

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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