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Schedule of Other Operating (Expense) Gain, Net (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Jan. 31, 2024
Jan. 31, 2023
Restructuring Cost and Reserve [Line Items]        
Corporate—Straight Path Communications Inc. class action legal fees $ (2,552) $ (1,597) $ (2,764) $ (4,109)
Corporate—Straight Path Communications Inc. class action insurance claims 2,186 1,263 2,869 2,988
Corporate—other 12
Fintech— government grants 349 382
net2phone—write-off of contingent consideration liability 73 73
Traditional Communications— cable telephony customer indemnification claim (1) (12)
Traditional Communications—other (1) 3 2
Total other operating (expense) gain, net (294) 17 190 816
Fintech [Member]        
Restructuring Cost and Reserve [Line Items]        
Fintech—write-off of contingent consideration liability $ 1,565