Schedule of Acquisition Date Fair Value of Consideration (Details) - USD ($) $ in Thousands			9 Months Ended
	Dec. 03, 2020	Dec. 11, 2019	Apr. 30, 2021	Apr. 30, 2020
Business Acquisition [Line Items]
Cash paid, net of cash acquired			$ 2,656	$ 450
IDT International Telecom, Inc [Member]
Business Acquisition [Line Items]
Cash paid	$ 2,732
Cash acquired	(344)
Cash paid, net of cash acquired	2,388
Contingent consideration	393
Total fair value of consideration, net of cash acquired	$ 2,781
Net2phone, Inc. [Member]
Business Acquisition [Line Items]
Cash paid		$ 450
Contingent consideration		375
Total fair value of consideration		$ 825