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Note 12 - Debt (Tables)
12 Months Ended
Jan. 31, 2018
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
     
January 31,

2018
     
January 31,

2017
 
Credit facility    
37,000
     
-
 
Total amount outstanding    
37,000
     
-
 
                 
Available for use    
113,000
     
150,000