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Goodwill and intangible assets
6 Months Ended
Jan. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Disclosure [Text Block]

Note 5 – Goodwill and intangible assets


At January 31, 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        (819)   (819)
Foreign currency translation    (203)   160    (43)
January 31, 2017   $27,447   $(23,887)  $3,560 

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


   January 31, 2017   July 31, 2016 
   Gross   Accumulated
Amortization
   Net   Gross   Accumulated
Amortization
   Net 
Patents  $11,026   $(10,922)  $104   $11,027   $(10,905)  $122 
Customer relationships   12,007    (8,739)   3,268    12,122    (8,331)   3,791 
Website and acquired content   1,005    (1,005)       1,011    (1,011)    
Licensed technology and other   475    (440)   35    485    (437)   48 
Trademarks   2,934    (2,781)   153    3,005    (2,544)   461 
Total  $27,447   $(23,887)  $3,560   $27,650   $(23,228)  $4,422 

At January 31, 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 January 31, 2017, the weighted average useful life of intangible assets is approximately three years.