PROPERTY, PLANT AND EQUIPMENT - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Property, plant and equipment
Property and equipment, gross	$ 31,445	$ 38,723
Less - accumulated depreciation	20,985	18,362
Property, plant and equipment, net	10,460	20,361
Land and improvements
Property, plant and equipment
Property and equipment, gross	863	863
Building and improvements
Property, plant and equipment
Property and equipment, gross	5,763	5,868
Furniture, machinery and equipment
Property, plant and equipment
Property and equipment, gross	18,924	19,132
Trucks, trailers and other vehicles
Property, plant and equipment
Property and equipment, gross	$ 5,895	5,315
Project development costs (Note 3)
Property, plant and equipment
Property and equipment, gross		$ 7,545

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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