Quarterly report pursuant to Section 13 or 15(d)

Goodwill and intangible assets (Tables)

v3.19.2
Goodwill and intangible assets (Tables)
 9 Months Ended
Apr. 30, 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, 2018   $ 27,347     $ (25,461 )   $ 1,886  
Amortization expense     —       (741 )     (741 )
Foreign currency translation     (110 )     93       (17 )
April 30, 2019   $ 27,237     $ (26,109 )   $ 1,128  
Schedule of Intangible Assets [Table Text Block] Intangible assets, all finite lived, consist of the following:

    April 30, 2019     July 31, 2018  
    Gross     Accumulated
Amortization		     Net     Gross     Accumulated
Amortization		     Net  
Patents   $ 11,027     $ (10,992 )   $ 35     $ 11,027     $ (10,980 )   $ 47  
Customer relationships     11,745       (10,652 )     1,093       11,836       (9,997 )     1,839  
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 )     —       2,993       (2,993 )     —  
Total   $ 27,237     $ (26,109 )   $ 1,128     $ 27,347     $ (25,461 )   $ 1,886  
Schedule of Useful Lives For Acquisitions [Table Text Block] At April 30, 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   4 years