DERIVATIVE FINANCIAL INSTRUMENTS (Details) gal in Millions, bu in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019 USD ($) bu gal	Oct. 31, 2018 USD ($)	Oct. 31, 2019 USD ($) bu gal	Oct. 31, 2018 USD ($)	Jan. 31, 2019 USD ($) bu
DERIVATIVE FINANCIAL INSTRUMENTS (Details) [Line Items]
Debt Instrument, Collateral Amount | $	$ 523,000		$ 523,000		$ 281,000
Gain (Loss) on Derivative Instruments, Net, Pretax | $	$ 248,000	$ 2,432,000	$ 1,478,000	$ 2,273,000
Assets [Member] | Corn [Member]
DERIVATIVE FINANCIAL INSTRUMENTS (Details) [Line Items]
Forward Purchase Contracts, Quantity	0.8		0.8
Assets [Member] | Corn [Member] | Short/Sell [Member]
DERIVATIVE FINANCIAL INSTRUMENTS (Details) [Line Items]
Commodity Futures, Quantity	3.6		3.6		2.0
Assets [Member] | Corn [Member] | Long/Buy
DERIVATIVE FINANCIAL INSTRUMENTS (Details) [Line Items]
Commodity Futures, Quantity	2.7		2.7
Assets [Member] | Ethanol [Member] | Short/Sell [Member]
DERIVATIVE FINANCIAL INSTRUMENTS (Details) [Line Items]
Commodity Futures, Quantity | gal	2.1		2.1
Liability [Member] | Corn [Member]
DERIVATIVE FINANCIAL INSTRUMENTS (Details) [Line Items]
Forward Purchase Contracts, Quantity					1.3
Liability [Member] | Corn [Member] | Short/Sell [Member]
DERIVATIVE FINANCIAL INSTRUMENTS (Details) [Line Items]
Commodity Futures, Quantity	2.6		2.6