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Goodwill and intangible assets
9 Months Ended
Apr. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Disclosure [Text Block]

Note 5 – Goodwill and intangible assets


At April 30, 2017 and July 31, 2016, 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 in the Life Sciences segment is as follows:


   Gross   Accumulated Amortization   Net 
July 31, 2016   $27,650   $(23,228)  $4,422 
Amortization expense        (1,140)   (1,140)
Foreign currency translation    (159)   121    (38)
April 30, 2017   $27,491   $(24,247)  $3,244 

Intangible assets, all finite lived, consist of the following:


   April 30, 2017   July 31, 2016 
   Gross   Accumulated
Amortization
   Net   Gross   Accumulated
Amortization
   Net 
Patents   $11,027   $(10,931)  $96   $11,027   $(10,905)  $122 
Customer relationships    12,034    (8,948)   3,086    12,122    (8,331)   3,791 
Website and acquired content    1,006    (1,006)       1,011    (1,011)    
Licensed technology and other    481    (450)   31    485    (437)   48 
Trademarks    2,943    (2,912)   31    3,005    (2,544)   461 
Total   $27,491   $(24,247)  $3,244   $27,650   $(23,228)  $4,422 

At April 30, 2017, information with respect to intangibles assets acquired is as follows:


    Useful life
assigned
    Weighted average
remaining useful life
 
Customer relationships    8-15 years    3.5 years 
Trademarks    5 years    0.5 year 
Other intangibles    10 years    2.5 years 

At April 30, 2017, the weighted average useful life of intangible assets is approximately three years.