Note 9 - Property and Equipment - Location of Property and Equipment (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Jan. 31, 2022
Net book value of property and equipment	$ 3,945	$ 4,272
UNITED STATES
Net book value of property and equipment	3,166	3,068
Europe [Member]
Net book value of property and equipment	44	46
SINGAPORE
Net book value of property and equipment	154	332
MALAYSIA
Net book value of property and equipment	$ 581	$ 826

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
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-Topic 360
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
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-Name Accounting Standards Codification
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-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(8))
-Publisher FASB
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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