Quarterly report pursuant to Section 13 or 15(d)

Goodwill and intangible assets (Tables)

v3.19.3.a.u2
Goodwill and intangible assets (Tables)
 3 Months Ended
Oct. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Indefinite-Lived Intangible Assets [Table Text Block] The Company’s change in the carrying amount of intangible assets, all in the Products segment is as follows:

    Gross     Accumulated Amortization     Net  
July 31, 2019   $ 27,238     $ (26,206 )   $ 1,032  
Amortization expense     —       (723 )     (723 )
Foreign currency translation     51       532       583  
October 31, 2019   $ 27,289     $ (26,397 )   $ 892  
Schedule of Intangible Assets [Table Text Block] Intangible assets, all finite lived, consist of the following:

    October 31, 2019     July 31, 2019  
    Gross     Accumulated
Amortization		     Net     Gross     Accumulated
Amortization		     Net  
Patents   $ 11,026     $ (11,000 )   $ 26     $ 11,027     $ (10,996 )   $ 31  
Customer relationships     11,798       (10,932 )     866       11,746       (10,745 )     1,001  
Website and acquired content     1,008       (1,008 )     —       1,008       (1,008 )     —  
Licensed technology and other     483       (483 )     —       483       (483 )     —  
Trademarks     2,974       (2,974 )     —       2,974       (2,974 )     —  
Total   $ 27,289     $ (26,397 )   $ 892     $ 27,238     $ (26,206 )   $ 1,032  
Schedule of Useful Lives For Acquisitions [Table Text Block] At October 31, 2019, information with respect to intangibles assets acquired is as follows:

    Useful life
assigned		   Weighted average
remaining useful life
Customer relationships   8 -15 years   1 year
Other intangibles   10 years   3 years