Annual report pursuant to Section 13 and 15(d)

Goodwill and intangible assets (Tables)

v3.10.0.1
Goodwill and intangible assets (Tables)
 12 Months Ended
Jul. 31, 2018
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 Products segment is as follows:

    Gross     Accumulated
Amortization		     Net  
July 31, 2016   $ 27,650     $ (23,228 )   $ 4,422  
Amortization expense     —       (1,520 )     (1,520 )
Foreign currency translation     (214 )     207       (7 )
July 31, 2017   $ 27,436     $ (24,541 )   $ 2,895  
Amortization expense     —       (992 )     (992 )
Foreign currency translation     (89 )     72       (17 )
July 31, 2018   $ 27,347     $ (25,461 )   $ 1,886  
Schedule of Intangible Assets [Table Text Block] Intangible assets, all finite-lived, consist of the following:

    July 31, 2018   July 31, 2017
    Gross     Accumulated
Amortization		   Net   Gross     Accumulated
Amortization		   Net  
Patents   $ 11,027     $ (10,980 )   $ 47   $ 11,027     $ (10,951 )   $ 76  
Customer relationships     11,836       (9,997 )     1,839     11,881       (9,083 )     2,798  
Website and acquired content     1,008       (1,008 )     —     1,011       (1,011 )     —  
Licensed technology and other     483       (483 )     —     484       (463 )     21  
Trademarks     2,993       (2,993 )     —     3,033       (3,033 )     —  
Total   $ 27,347     $ (25,461 )   $ 1,886   $ 27,436     $ (24,541 )   $ 2,895  
Schedule of Useful Lives For Acquisitions [Table Text Block] At July 31, 2018 information with respect to the intangibles acquired is as follows:

    Useful life
assigned		   Weighted average
remaining useful life
Customer relationships   8-15 years   2 years
Other intangibles   10 years   4 years
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Estimated amortization expense related to these finite-lived intangible assets for the five succeeding fiscal years ending July 31 is as follows:

2019   $ 873  
2020     508  
2021     272  
2022     233  
2023     —