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Other Operating Expense, Net (Tables)
12 Months Ended
Jul. 31, 2020
Other Income and Expenses [Abstract]  
Schedule of other operating expense, net
Year ended July 31
(in thousands)
  2020   2019 
Corporate —Straight Path Communications Inc. class action (legal fees net of insurance claims)/insurance claims net of legal fees  $(531)  $326 
net2phone—indemnification claim   (1,244)   (292)
net2phone—other, net   (63)   25 
Telecom & Payment Services—accrual for non-income related taxes related to a foreign subsidiary   (2,150)   (8,000)
Telecom & Payment Services—write-off of assets   (575)   
 
Telecom & Payment Services—accrual for legal matter   (500)   
 
Telecom & Payment Services—gain on sale of calling card business in Asia   
    215 
TOTAL  $(5,063)  $(7,726)