INVESTMENTS (Details) $ in Thousands, gal in Millions	12 Months Ended
	Jan. 31, 2021 USD ($) gal	Jan. 31, 2020 USD ($)	Jan. 31, 2019 USD ($)
INVESTMENTS (Details) [Line Items]
Income (Loss) from Equity Method Investments	$ 500	$ 1,392	$ 1,536
Proceeds from Equity Method Investment, Distribution	3,508	1,003	4,010
Equity Method Investments	29,456	32,464
Short-term Investments	36,194	26,073
Certificates of Deposit [Member]
INVESTMENTS (Details) [Line Items]
Short-term Investments	$ 36,200	$ 26,100
Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, Year One	0.20%	1.80%
Big River [Member]
INVESTMENTS (Details) [Line Items]
Payments to Acquire Equity Method Investments	$ 20,000
Quantity of ethanol shipped (in US Gallons) | gal	387.7
Income (Loss) from Equity Method Investments	$ 500	$ 1,400	1,500
Proceeds from Equity Method Investment, Distribution	3,500	$ 1,000	$ 4,000
Equity Method Investments	29,500
Equity Method Investment, Underlying Equity in Net Assets	25,600
Other Restricted Assets	150,000
Proportionate Share of Restricted Net Assets	$ 15,500