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LEASES (Tables)
 6 Months Ended
Jul. 31, 2017
Leases [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] At July 31, 2017, 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 2018  $3,556 
2019   6,910 
2020   5,379 
2021   3,580 
2022   2,948 
Thereafter   1,622 
Total  $23,995