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DERIVATIVE FINANCIAL INSTRUMENTS (Details) bu in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2019 USD ($) bu	Jul. 31, 2018 USD ($)	Jul. 31, 2019 USD ($) bu	Jul. 31, 2018 USD ($)	Jan. 31, 2019 USD ($) bu
DERIVATIVE FINANCIAL INSTRUMENTS (Details) [Line Items]
Debt Instrument, Collateral Amount | $	$ 222,000		$ 222,000		$ 281,000
Gain (Loss) on Derivative Instruments, Net, Pretax | $	$ 537,000	$ 405,000	$ 1,230,000	$ (160,000)
Corn [Member]
DERIVATIVE FINANCIAL INSTRUMENTS (Details) [Line Items]
Forward Purchase Contracts, Quantity (in US Bushels)	1.5		1.5		1.3
Corn [Member] | Short/Sell [Member]
DERIVATIVE FINANCIAL INSTRUMENTS (Details) [Line Items]
Commodity Futures, Quantity (in US Bushels)	2.1		2.1		2.0
Corn [Member] | Long/Buy
DERIVATIVE FINANCIAL INSTRUMENTS (Details) [Line Items]
Commodity Futures, Quantity (in US Bushels)	1.0		1.0

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