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QUARTERLY UNAUDITED INFORMATION (Details) - Schedule of Quarterly Financial Information - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2021 | Oct. 31, 2020 | Jul. 31, 2020 | Apr. 30, 2020 | Jan. 31, 2020 | Oct. 31, 2019 | Jul. 31, 2019 | Apr. 30, 2019 | Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019
Schedule of Quarterly Financial Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales and revenue | $ 126,018 |  | $ 124,251 |  | $ 39,327 |  | $ 83,250 |  | $ 120,920 |  | $ 86,671 |  | $ 105,868 |  | $ 104,575 |  | $ 372,846 | $ 418,034 | $ 486,671
Gross (loss) profit | 6,843 |  | 17,679 |  | (1,331) |  | (9,330) |  | 6,593 |  | (1,758) |  | 4,004 |  | 3,646 |  | 13,861 | 12,485 | 30,215
Net (loss) income | 5,022 |  | 11,059 |  | (2,033) |  | (8,430) |  | 6,249 |  | (1,673) |  | 3,353 |  | 3,715 |  | 5,618 | 11,644 | 37,510
Net (loss) income attributable to REX common shareholders | $ 3,543 |  | $ 8,841 |  | $ (1,748) |  | $ (7,635) |  | $ 4,402 |  | $ (2,052) |  | $ 2,256 |  | $ 2,821 |  | $ 3,001 | $ 7,427 | $ 31,645
Basic and diluted net (loss) income per share attributable to REX common shareholders ( (in Dollars per share) | $ 0.59 | [1] | $ 1.44 | [1] | $ (0.28) | [1] | $ (1.21) | [1] | $ 0.70 | [1] | $ (0.32) | [1] | $ 0.36 | [1] | $ 0.45 | [1] | $ 0.49 | $ 1.18 | $ 4.91
[1] | The total of the quarterly net income per share amounts do not equal the annual net income per share amounts due to the impact of varying amounts of shares outstanding during the year.

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