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Schedule of Other Operating (Expense) Gain, Net (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jul. 31, 2024
Jul. 31, 2023
Jul. 31, 2022
Restructuring Cost and Reserve [Line Items]      
Corporate —Straight Path Communications Inc. class action legal fees $ (7,237) $ (5,785) $ (7,671)
Corporate —Straight Path Communications Inc. class action insurance claims 2,869 3,845 6,635
Corporate—Grow New Jersey Assistance Act tax credit 1,600
Corporate—other 12
Fintech—write-off of intangible asset (74)
write-off of contingent consideration liability (500)    
Fintech—government grants 382 20
National Retail Solutions—write-off of capitalized internal use software costs (45)
National Retail Solutions—other (105)
Traditional Communications—write-off of capitalized internal use software costs (237) (1,419)
Traditional Communications—cable telephony customer indemnification claim (3,925) (96)
Traditional Communications—increase in contingent consideration liability (216)
Traditional Communications—other 51 (329) (7)
TOTAL (2,945) (4,415) (826)
Fintech [Member]      
Restructuring Cost and Reserve [Line Items]      
write-off of contingent consideration liability 1,765 1,565
Net2 phone [Member]      
Restructuring Cost and Reserve [Line Items]      
write-off of contingent consideration liability 73 303
net2phone—write-off of telephone equipment (133)
net2phone—other $ (17) $ (10)