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NET INCOME PER SHARE FROM CONTINUING OPERATIONS (Tables) | 12 Months Ended
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Jan. 31, 2013
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The following table reconciles the basic and diluted net income per share from continuing operations computations for each year presented for fiscal years 2011 and 2010 (amounts in thousands, except per-share amounts):
|  | 2011 |
|  | Income |  |  | Shares |  |  | Per Share |
Basic net income per share from continuing operations attributable to REX common shareholders |  | $ | 26,629 |  |  |  | 9,117 |  |  | $ | 2.92 |
Effect of stock options |  |  |  |  |  |  | 70 |  |  |  |  |
Diluted net income per share from continuing operations attributable to REX common shareholders |  | $ | 26,629 |  |  |  | 9,187 |  |  | $ | 2.90 |
|  | 2010 |
|  | Income |  |  | Shares |  |  | Per Share |
Basic net income per share from continuing operations attributable to REX common shareholders |  | $ | 18,614 |  |  |  | 9,651 |  |  | $ | 1.93 |
Effect of stock options |  |  |  |  |  |  | 174 |  |  |  |  |
Diluted net income per share from continuing operations attributable to REX common shareholders |  | $ | 18,614 |  |  |  | 9,825 |  |  | $ | 1.89 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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