Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Income Statement [Abstract]
Net income	$ 8,476	$ 12,555
Change in unrealized loss on available-for-sale securities	(66)	(222)
Foreign currency translation adjustments	631	(145)
Other comprehensive income (loss)	565	(367)
Comprehensive income	9,041	12,188
Comprehensive income attributable to noncontrolling interests	(817)	(1,553)
Comprehensive income attributable to IDT Corporation	$ 8,224	$ 10,635