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Consolidated Condensed Balance Sheets (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2012
Jan. 31, 2012
Current assets:    
Cash and cash equivalents $ 63,962 $ 75,013
Accounts receivable 14,879 12,784
Inventories 29,354 30,349
Refundable income taxes 1,513 1,816
Prepaid expenses and other 4,576 3,987
Deferred taxes, net 2,530 3,090
Total current assets 116,814 127,039
Property and equipment, net 232,245 240,084
Other assets 7,215 7,884
Equity method investments 59,564 61,679
Restricted investments and deposits 683 1,363
Total assets 416,521 438,049
Current liabilities:    
Accounts payable, trade 3,204 6,985
Deferred income 1,315 1,864
Accrued real estate taxes 2,100 2,750
Accrued payroll and related items 660 2,882
Derivative financial instruments 1,766 1,694
Other current liabilities 4,658 5,844
Total current liabilities 26,418 37,241
Long-term liabilities:    
Deferred taxes 4,642 4,642
Deferred income 143 552
Derivative financial instruments 1,766 2,541
Other long-term liabilities 2,731 2,703
Total long-term liabilities 109,331 118,965
REX shareholders’ equity:    
Common stock 299 299
Paid-in capital 143,667 142,994
Retained earnings 326,062 324,323
Treasury stock (217,647) (215,105)
Total REX shareholders’ equity 252,381 252,511
Noncontrolling interests 28,391 29,332
Total equity 280,772 281,843
Total liabilities and equity 416,521 438,049
Alternative Energy Segment [Member]
    
Current assets:    
Total assets 347,600 367,029
Current liabilities:    
Current portion of long-term debt 12,454 14,972
Long-term liabilities:    
Long-term debt 99,362 107,706
Corporate and Other Segment [Member]
    
Current liabilities:    
Current portion of long-term debt 261 250
Long-term liabilities:    
Long-term debt $ 687 $ 821