Note 6 - Balance Sheet - Continuing Operations - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Apr. 30, 2022	Jan. 31, 2022
Property and equipment, gross	$ 14,964	$ 18,795
Accumulated depreciation and amortization	(10,902)	(14,523)
Total property and equipment, net	4,062	4,272
Furniture and Fixtures [Member]
Property and equipment, gross	9,856	9,865
Vehicles [Member]
Property and equipment, gross	512	495
Marine Services Equipment [Member]
Property and equipment, gross	0	3,880
Land and Building [Member]
Property and equipment, gross	$ 4,596	$ 4,555

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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