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BUSINESS COMBINATIONS (Details) - Refined Coal [Member] - USD ($)	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Aug. 10, 2017
BUSINESS COMBINATIONS (Details) [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent			95.35%
Net Sales and Revenue of Business Segment	$ 1,200,000
Net Income (Loss) Attributable to Parent	15,800,000
Business Acquisition, Pro Forma Revenue		$ 452,600,000
Business Acquisition, Pro Forma Net Income (Loss)		38,900,000
Payments to Acquire Businesses, Gross	$ 12,049,000
Business Acquisition, Transaction Costs		$ 2,500,000

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