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Goodwill (Details) - USD ($)
$ in Thousands
12 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Indefinite-lived Intangible Assets [Line Items]    
Beginning Balance $ 11,326  
Ending Balance 11,315 $ 11,326
Telecom & Payment Services [Member]    
Indefinite-lived Intangible Assets [Line Items]    
Beginning Balance 11,326 11,218
Foreign currency translation adjustments (11) 108
Ending Balance $ 11,315 $ 11,326