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Note 5 - Trade Receivables
 12 Months Ended
Jan. 31, 2018
Notes to Financial Statements  
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Note
5
– Trade Receivables
 
     
January 31,

2018
      
January 31,

2017
  
Trade receivables    
30,111
      
26,495
  
Less: Allowance for doubtful accounts    
(1,319
 )    
(1,094
 )
     
28,792
      
25,401
  
 
Included in accounts receivable are unbilled receivables in the amount of
$0.6
million as at
January 31, 2018 (
$1.0
million as at
January 31, 2017).
For the years ended
January 31, 2018,
2017
and
2016,
bad debt expense was
$0.8
million,
$0.6
million and
$0.8
million, respectively.