Consolidated Condensed Balance Sheets (USD $) In Thousands	Jul. 31, 2011	Jan. 31, 2011
Current assets:
Cash and cash equivalents	$ 96,435	$ 91,019
Accounts receivable, net	7,881	9,619
Inventory	10,370	7,819
Refundable income taxes		8,503
Prepaid expenses and other	2,881	3,055
Deferred taxes, net	3,623	5,834
Total current assets	121,190	125,849
Property and equipment, net	163,106	169,811
Other assets	4,544	5,907
Deferred taxes, net	5,206	5,206
Equity method investments	74,506	67,349
Restricted investments and deposits	1,600	1,600
Total assets	370,152	375,722
Current liabilities:
Accounts payable, trade	1,345	2,557
Deferred income	2,723	3,982
Accrued real estate taxes	1,792	2,393
Derivative financial instruments	1,720	1,835
Other current liabilities	5,995	3,786
Total current liabilities	24,560	24,567
Long-term liabilities:
Deferred income	1,308	2,416
Derivative financial instruments	3,195	3,688
Other	2,859	4,114
Total long-term liabilities	72,228	81,191
REX shareholders’ equity:
Common stock	299	299
Paid-in capital	142,379	142,293
Retained earnings	303,052	296,053
Treasury stock	(196,000)	(193,713)
Total REX shareholders’ equity	249,730	244,932
Noncontrolling interests	23,634	25,032
Total equity	273,364	269,964
Total liabilities and equity	370,152	375,722
Alternative Energy Segment [Member]
Current liabilities:
Current portion of long-term debt	10,643	9,672
Long-term liabilities:
Long-term debt	63,679	69,049
Corporateand Other Segment [Member]
Current liabilities:
Current portion of long-term debt	342	342
Long-term liabilities:
Long-term debt	$ 1,187	$ 1,924