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Note 9 - Intangible Assets
 12 Months Ended
Jan. 31, 2017
Notes to Financial Statements  
Intangible Assets Disclosure [Text Block]
Note
9
- Intangible Assets
 
     
January 31,
2017
      
January 31,
2016
  
Cost                
Customer agreements and relationships    
125,057
      
107,743
  
Existing technology    
137,587
      
117,586
  
Trade names    
6,314
      
4,515
  
Non-compete covenants    
2,916
      
2,559
  
     
271,874
      
232,403
  
Accumulated amortization                
Customer agreements and relationships    
56,509
      
45,853
  
Existing technology    
64,879
      
48,295
  
Trade names    
3,335
      
3,128
  
Non-compete covenants    
1,706
      
1,565
  
     
126,429
      
98,841
  
Net    
145,445
      
133,562
  
 
Intangible assets related to our acquisitions are recorded at their fair value at the acquisition date. The change in intangible assets during
2017
is primarily due to the acquisitions of Pixi, Appterra,
4Solutions
and Datamyne described in Note
3
to these consolidated financial statements. The balance of the change in intangible assets is due to foreign currency translation and amortization.
 
Intangible assets with a finite life are amortized into income over their useful lives. Amortization expense for existing intangible assets is expected to be
$145.5
million over the following periods:
$27.5
million for
2018,
$25.4
million for
2019,
$24.4
million for
2020,
$20.9
million for
2021,
$17.0
million for
2022
and
$30.3
million thereafter. Expected future amortization expense is subject to fluctuations in foreign exchange rates and assumes no future adjustments to acquired intangible assets.