Schedule of Other Operating (Expense) Gain, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Restructuring Cost and Reserve [Line Items]
Corporate —Straight Path Communications Inc. class action legal fees	$ (5,785)	$ (7,671)	$ (2,876)
Corporate —Straight Path Communications Inc. class action insurance claims	3,845	6,635	3,101
Corporate—Grow New Jersey Assistance Act tax credit	1,600
Fintech—government grants	382	20
Fintech—other			(367)
net2phone—other		(10)	(100)
Traditional Communications—write-off of capitalized internal use software costs	(1,419)
Traditional Communications—gain from sale of rights under class action lawsuit			2,000
Traditional Communications—cable telephony customer indemnification claim	(3,925)	(96)	(472)
Traditional Communications— increase in contingent consideration liability	(216)
Traditional Communications—other	(329)	(7)	(555)
TOTAL	(4,415)	(826)	731
Fintech [Member]
Restructuring Cost and Reserve [Line Items]
Write-off of contingent consideration liability	1,565
Net2phone [Member]
Restructuring Cost and Reserve [Line Items]
Write-off of contingent consideration liability		303
net2phone—write-off of telephone equipment	$ (133)