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LEASES (Tables)
 6 Months Ended
Jul. 31, 2018
Leases [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] At July 31, 2018, the Company has lease agreements, as lessee, for rail cars and a natural gas pipeline. All of the leases are accounted for as operating leases. The following table is a summary of future minimum rentals on such leases (amounts in thousands):

Years Ended January 31,  Minimum
Rentals		 
      
Remainder of 2019  $3,919 
2020   6,873 
2021   4,817 
2022   4,164 
2023   2,582 
Thereafter   5,532 
Total  $27,887