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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Income Statement [Abstract]
Net sales and revenue	$ 83,250	$ 104,575
Cost of sales (includes $12.3 million and $46.7 million with related parties for the quarters ended April 30, 2020 and 2019, respectively)	92,580	100,929
Gross (loss) profit	(9,330)	3,646
Selling, general and administrative expenses (includes $(0.3) million and $0.1 million with related parties for the quarters ended April 30, 2020 and 2019, respectively)	(4,605)	(4,732)
Equity in (loss) income of unconsolidated affiliates	(477)	126
Interest and other income, (net)	669	1,127
(Loss) income before income taxes	(13,743)	167
Benefit for income taxes	5,313	3,548
Net (loss) income	(8,430)	3,715
Net loss (income) attributable to noncontrolling interests	795	(894)
Net (loss) income attributable to REX common shareholders	$ (7,635)	$ 2,821
Weighted average shares outstanding – basic and diluted (in Shares)	6,304	6,315
Basic and diluted net (loss) income per share attributable to REX common shareholders (in Dollars per share)	$ (1.21)	$ 0.45

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