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Goodwill and intangible assets
6 Months Ended
Jan. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Disclosure [Text Block]

Note 5 – Goodwill and intangible assets


At January 31, 2015 and July 31, 2014, the Company’s net carrying amount of goodwill, related to the Clinical Labs segment, is $7,452.


The Company’s change in the net carrying amount of intangible assets, all of which is included in the Life Sciences segment is as follows:


  Gross   Accumulated
Amortization
  Net  
July 31, 2014 $ 28,478   $ (20,370 ) $ 8,108  
Amortization expense       (859 )   (859 )
Foreign currency translation   (442 )   315     (127 )
January 31, 2015 $ 28,036   $ (20,914 ) $ 7,122  

Intangible assets consist of the following:


  January 31, 2015   July 31, 2014  
  Gross   Accumulated
Amortization
  Net   Gross   Accumulated
Amortization
  Net  
Patents $ 11,027   $ (10,793 ) $ 234   $ 11,027   $ (10,775 ) $ 252  
Customer relationships   12,343     (6,943 )   5,400     12,602     (6,565 )   6,037  
Website and acquired content   1,027     (1,027 )       1,037     (1,037 )    
Licensed technology and other   511     (422 )   90     537     (434 )   103  
Trademarks   3,128     (1,729 )   1,398     3,275     (1,559 )   1,716  
Total $ 28,036   $ (20,914 ) $ 7,122   $ 28,478   $ (20,370 ) $ 8,108  

At January 31, 2015, information with respect to intangibles assets acquired is as follows:


    Useful life
assigned
Years
  Weighted average
remaining useful life
Customer relationships   8   15   5.5 years
Trademarks        
5
2.5 years
Other intangibles   4   5   0.5 year

At January 31, 2015, the weighted average useful life of amortizable intangible assets is approximately 4.5 years.