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LEASES (Tables)
 12 Months Ended
Jan. 31, 2018
Leases [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] At January 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. As of January 31, 2018, future minimum annual rentals on such leases are as follows (amounts in thousands):

Years Ended   Minimum 
January 31,   Rentals 
       
2019    7,209 
2020    5,700 
2021    3,931 
2022    3,299 
2023    1,734 
Thereafter    4,130 
    $26,003