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PROPERTY, PLANT AND EQUIPMENT - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Jan. 31, 2021 | Jan. 31, 2020
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Property, plant and equipment |  |
Property and equipment, gross | $ 38,723 | $ 37,525
Less - accumulated depreciation | 18,362 | 14,986
Property, plant and equipment, net | 20,361 | 22,539
Land and improvements |  |
Property, plant and equipment |  |
Property and equipment, gross | 863 | 863
Building and improvements |  |
Property, plant and equipment |  |
Property and equipment, gross | 5,868 | 5,696
Furniture, machinery and equipment |  |
Property, plant and equipment |  |
Property and equipment, gross | 19,132 | 18,900
Trucks, trailers and other vehicles |  |
Property, plant and equipment |  |
Property and equipment, gross | 5,315 | 5,213
Project development costs (Note 3) |  |
Property, plant and equipment |  |
Property and equipment, gross | $ 7,545 | $ 6,853

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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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