Quarterly report pursuant to Section 13 or 15(d)

Goodwill and intangible assets (Tables)

v3.19.3.a.u2
Goodwill and intangible assets (Tables)
 6 Months Ended
Jan. 31, 2020
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     —       (291 )     (291 )
Foreign currency translation     94       (83 )     11  
January 31, 2020   $ 27,332     $ (26,580 )   $ 752  
Schedule of Intangible Assets [Table Text Block] Intangible assets, all finite lived, consist of the following:

    January 31, 2020   July 31, 2019  
    Gross     Accumulated
Amortization		     Net   Gross     Accumulated
Amortization		     Net  
Patents   $ 11,027     $ (11,005 )   $ 22   $ 11,027     $ (10,996 )   $ 31  
Customer relationships     11,840       (11,110 )     730     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   $ 27,332     $ (26,580 )   $ 752   $ 27,238     $ (26,206 )   $ 1,032  
Schedule of Useful Lives For Acquisitions [Table Text Block] At January 31, 2020, 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