Quarterly report pursuant to Section 13 or 15(d)

Goodwill and intangible assets (Tables)

v3.7.0.1
Goodwill and intangible assets (Tables)
 9 Months Ended
Apr. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Indefinite-Lived Intangible Assets [Table Text Block] 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  
Schedule of Intangible Assets [Table Text Block] 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  
Schedule of Useful Lives For Acquisitions [Table Text Block] 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