Schedule of Other Operating Gain (Expense), Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Other Income and Expenses [Abstract]
Corporate-Straight Path Communications Inc. class action insurance claims net of legal fees/(legal fees net of insurance claims)	$ 605	$ 152	$ 601	$ (269)
net2phone-UCaaS-other, net			(100)	(63)
Fintech-money transfer settlement	45		45
Traditional Communications-gain from sale of rights under class action lawsuit			2,000
Traditional Communications-net2phone indemnification claim	(55)	(386)	(442)	(920)
Traditional Communications-Carrier Services settlement			(554)
Traditional Communications-accrual for non-income related taxes related to a foreign subsidiary				(2,150)
Total other operating gain (expense), net	$ 595	$ (234)	$ 1,550	$ (3,402)