Subsequent Event	9 Months Ended
Oct. 31, 2011
Subsequent Events [Text Block]	Note 19. Subsequent Event On November 1, 2011, the Company acquired a 49.75% equity interest in NuGen. Following the purchase, the Company owns all of the outstanding Class A membership interest units in NuGen, representing a 100% voting interest and a 97.55% equity interest in NuGen. The purchase price, which included payment of the Company’s remaining contingent consideration liability for the purchase of its initial 47.77% equity interest in NuGen on July 1, 2010, was $12,678,000. The Company also contributed an additional $7,000,000 to NuGen at closing to reduce long-term debt. On November 1, 2011, NuGen refinanced its existing debt with a term loan of $55,000,000 and a $10,000,000 revolving line of credit. The term loan bears interest at three month LIBOR plus 3.25% subject to a 4% floor, is payable in quarterly installments based on a ten year amortization schedule, and matures on October 31, 2016. Borrowings under the revolving loan are subject to a borrowing base of specified percentages of NuGen’s inventory and eligible accounts receivable less amounts outstanding under the revolving loan and letters of credit. Revolving loan borrowings bear interest at one month LIBOR plus 3% subject to a 3.75% floor, and are payable in full on November 1, 2012, renewable annually. The loan agreement contains financial covenants requiring NuGen to maintain a specified fixed charge coverage ratio and minimum working capital, and to apply specified percentages of excess cash flow annually to the term loan, as well as customary affirmative and negative covenants and events of default. The term loan and revolving loan borrowings are secured by all the property, assets and contracts of NuGen. The debt is recourse only to NuGen and not to REX American Resources Corporation or any of its wholly owned subsidiaries. Subsequent to the acquisition, the Company will discontinue using the equity method of accounting for NuGen and will begin consolidating the results of NuGen in its consolidated financial statements. In addition, during the fourth quarter, the Company expects to complete its analysis of identifying the fair value of assets acquired and liabilities assumed related to the NuGen acquisition and determining the fair value of its previous noncontrolling interest at the date of acquisition.

Subsequent Event

9 Months Ended

Oct. 31, 2011

Note 19. Subsequent Event

On November 1, 2011, the Company acquired a 49.75% equity interest in NuGen. Following the purchase, the Company owns all of the outstanding Class A membership interest units in NuGen, representing a 100% voting interest and a 97.55% equity interest in NuGen. The purchase price, which included payment of the Company’s remaining contingent consideration liability for the purchase of its initial 47.77% equity interest in NuGen on July 1, 2010, was $12,678,000. The Company also contributed an additional $7,000,000 to NuGen at closing to reduce long-term debt.

On November 1, 2011, NuGen refinanced its existing debt with a term loan of $55,000,000 and a $10,000,000 revolving line of credit. The term loan bears interest at three month LIBOR plus 3.25% subject to a 4% floor, is payable in quarterly installments based on a ten year amortization schedule, and matures on October 31, 2016. Borrowings under the revolving loan are subject to a borrowing base of specified percentages of NuGen’s inventory and eligible accounts receivable less amounts outstanding under the revolving loan and letters of credit. Revolving loan borrowings bear interest at one month LIBOR plus 3% subject to a 3.75% floor, and are payable in full on November 1, 2012, renewable annually. The loan agreement contains financial covenants requiring NuGen to maintain a specified fixed charge coverage ratio and minimum working capital, and to apply specified percentages of excess cash flow annually to the term loan, as well as customary affirmative and negative covenants and events of default. The term loan and revolving loan borrowings are secured by all the property, assets and contracts of NuGen. The debt is recourse only to NuGen and not to REX American Resources Corporation or any of its wholly owned subsidiaries.

Subsequent to the acquisition, the Company will discontinue using the equity method of accounting for NuGen and will begin consolidating the results of NuGen in its consolidated financial statements. In addition, during the fourth quarter, the Company expects to complete its analysis of identifying the fair value of assets acquired and liabilities assumed related to the NuGen acquisition and determining the fair value of its previous noncontrolling interest at the date of acquisition.