CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013
Net sales and revenue	$ 150,231,000	$ 175,389,000	$ 306,167,000	$ 353,813,000
Cost of sales	111,413,000	164,511,000	230,724,000	333,937,000
Gross profit	38,818,000	10,878,000	75,443,000	19,876,000
Selling, general and administrative expenses	(4,839,000)	(4,194,000)	(11,010,000)	(7,935,000)
Equity in income of unconsolidated affiliates	7,245,000	4,628,000	15,542,000	6,227,000
Interest and other income	88,000	45,000	140,000	86,000
Interest expense	(591,000)	(1,029,000)	(1,283,000)	(2,084,000)
Losses on derivative financial instruments, net	(1,000)	(10,000)	(5,000)	(6,000)
Income from continuing operations before income taxes	40,720,000	10,318,000	78,827,000	16,164,000
Provision for income taxes	(14,009,000)	(3,694,000)	(27,925,000)	(5,763,000)
Income from continuing operations	26,711,000	6,624,000	50,902,000	10,401,000
Income from discontinued operations, net of tax	2,000	120,000	11,000	285,000
Gain on disposal of discontinued operations, net of tax	5,000	1,000	5,000	132,000
Net income	26,718,000	6,745,000	50,918,000	10,818,000
Net income attributable to noncontrolling interests	(4,811,000)	(920,000)	(7,269,000)	(1,486,000)
Net income attributable to REX common shareholders	21,907,000	5,825,000	43,649,000	9,332,000
Weighted average shares outstanding – basic (in Shares)	8,182	8,164	8,150	8,161
Basic income per share from continuing operations attributable to REX common shareholders (in Dollars per share)	$ 2.68	$ 0.70	$ 5.36	$ 1.09
Basic income per share from discontinued operations attributable to REX common shareholders (in Dollars per share)		$ 0.01		$ 0.03
Basic income per share on disposal of discontinued operations attributable to REX common shareholders (in Dollars per share)				$ 0.02
Basic net income per share attributable to REX common shareholders (in Dollars per share)	$ 2.68	$ 0.71	$ 5.36	$ 1.14
Weighted average shares outstanding – diluted (in Shares)	8,182	8,204	8,166	8,204
Diluted income per share from continuing operations attributable to REX common shareholders (in Dollars per share)	$ 2.68	$ 0.70	$ 5.35	$ 1.09
Diluted income per share from discontinued operations attributable to REX common shareholders (in Dollars per share)		$ 0.01		$ 0.03
Diluted income per share on disposal of discontinued operations attributable to REX common shareholders (in Dollars per share)				$ 0.02
Diluted net income per share attributable to REX common shareholders (in Dollars per share)	$ 2.68	$ 0.71	$ 5.35	$ 1.14
Amounts attributable to REX common shareholders:
Income from continuing operations, net of tax	21,900,000	5,704,000	43,633,000	8,915,000
Income from discontinued operations, net of tax	7,000	121,000	16,000	417,000
Net income	$ 21,907,000	$ 5,825,000	$ 43,649,000	$ 9,332,000