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QUARTERLY UNAUDITED INFORMATION (Details) - Schedule of Quarterly Financial Information (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Jan. 31, 2014 | Oct. 31, 2013 | Jul. 31, 2013 | Apr. 30, 2013 | Jan. 31, 2013 | Oct. 31, 2012 | Jul. 31, 2012 | Apr. 30, 2012 | Jan. 31, 2014 | Jan. 31, 2013 | Jan. 31, 2012
Schedule of Quarterly Financial Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales and revenue (a) | $ 146,090 | [1] | $ 166,188 | [1] | $ 175,389 | [1] | $ 178,424 | [1] | $ 174,347 | [1] | $ 178,639 | [1] | $ 152,898 | [1] | $ 150,755 | [1] | $ 666,091 | $ 656,639 | $ 408,879
Gross profit (a) | 26,279 | [1] | 18,010 | [1] | 10,870 | [1] | 8,992 | [1] | (2,558) | [1] | 3,691 | [1] | 7,006 | [1] | 5,463 | [1] | 64,151 | 13,602 | 34,831
Net income | 17,933 |  | 11,478 |  | 6,745 |  | 4,073 |  | (5,262) |  | 893 |  | 1,289 |  | 1,492 |  | 40,229 | (1,588) | 33,698
Net income attributable to REX common shareholders | $ 15,874 |  | $ 9,867 |  | $ 5,825 |  | $ 3,507 |  | $ (4,443) |  | $ 409 |  | $ 806 |  | $ 933 |  | $ 35,073 | $ (2,295) | $ 28,270
Basic net income per share attributable to REX common shareholders (b) (in Dollars per share) | $ 1.96 | [2] | $ 1.21 | [2] | $ 0.71 | [2] | $ 0.43 | [2] | $ (0.54) | [2] | $ 0.05 | [2] | $ 0.10 | [2] | $ 0.11 | [2] | $ 4.31 | $ (0.28) | $ 3.10
Diluted net income per share attributable to REX common shareholders (b) (in Dollars per share) | $ 1.95 | [2] | $ 1.21 | [2] | $ 0.71 | [2] | $ 0.43 | [2] | $ (0.54) | [2] | $ 0.05 | [2] | $ 0.10 | [2] | $ 0.11 | [2] | $ 4.29 | $ (0.28) | $ 3.08
[1] | Amounts differ from those previously reported as a result of retail operations and certain real estate assets sold being reclassified as discontinued operations and other reclassifications.
[2] | The total of the quarterly net income (loss) per share amounts do not equal the annual net loss or income per share amount due to the impact of varying amounts of shares and options outstanding during the year. In addition, basic net loss per share equals diluted net loss per share in periods a net loss is reported.

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