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Consolidated Condensed Balance Sheets (USD $)
In Thousands, unless otherwise specified
Apr. 30, 2012
Jan. 31, 2012
Current assets:    
Cash and cash equivalents $ 72,064 $ 75,013
Accounts receivable 15,025 12,784
Inventory, net 25,625 30,349
Refundable income taxes 1,476 1,816
Prepaid expenses and other 3,862 3,987
Deferred taxes, net 3,083 3,090
Total current assets 121,135 127,039
Property and equipment, net 237,421 240,084
Other assets 7,579 7,884
Equity method investments 60,081 61,679
Restricted investments and deposits 1,003 1,363
Total assets 427,219 438,049
Current liabilities:    
Accounts payable, trade 5,989 6,985
Deferred income 1,510 1,864
Accrued real estate taxes 2,741 2,750
Accrued payroll and related items 510 2,882
Derivative financial instruments 1,733 1,694
Other current liabilities 4,683 5,844
Total current liabilities 29,877 37,241
Long-term liabilities:    
Deferred taxes 4,642 4,642
Deferred income 316 552
Derivative financial instruments 2,166 2,541
Other long term liabilities 2,720 2,703
Total long-term liabilities 114,069 118,965
REX shareholders’ equity:    
Common stock 299 299
Paid-in capital 143,592 142,994
Retained earnings 325,256 324,323
Treasury stock (215,239) (215,105)
Total REX shareholders’ equity 253,908 252,511
Noncontrolling interests 29,365 29,332
Total equity 283,273 281,843
Total liabilities and equity 427,219 438,049
Alternative Energy Segment [Member]
    
Current liabilities:    
Current portion of long-term debt 12,369 14,972
Long-term liabilities:    
Long-term debt 103,557 107,706
Corporate and Other Segment [Member]
    
Current liabilities:    
Current portion of long-term debt 342 250
Long-term liabilities:    
Long-term debt $ 668 $ 821