Quarterly report pursuant to Section 13 or 15(d)

Goodwill and intangible assets (Details) - Schedule of indefinite-lived intangible assets

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Goodwill and intangible assets (Details) - Schedule of indefinite-lived intangible assets - Products [Member]
$ in Thousands
6 Months Ended
Jan. 31, 2020
USD ($)
Indefinite-lived Intangible Assets [Line Items]  
Gross, Beginning Balance $ 27,238
Accumulated Amortization, Beginning Balance (26,206)
Net, Beginning Balance 1,032
Amortization expense, Accumulated Amortization (291)
Amortization expense, Net (291)
Foreign currency translation, Gross 94
Foreign currency translation, Accumulated Amortization (83)
Foreign currency translation, Net 11
Gross, Ending Balance 27,332
Accumulated Amortization, Ending Balance (26,580)
Net, Ending Balance $ 752