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Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 385	$ 2,457	$ (133)	$ (552)
Other comprehensive (loss) income:
Change in unrealized loss on available-for-sale securities	84		84	1
Foreign currency translation adjustments	(647)	(10)	(2,364)	473
Other comprehensive (loss) income	(563)	(10)	(2,280)	474
Comprehensive (loss) income	(178)	2,447	(2,413)	(78)
Comprehensive loss (income) attributable to noncontrolling interests	133	(287)	70	(888)
Comprehensive (loss) income attributable to IDT Corporation	$ (45)	$ 2,160	$ (2,343)	$ (966)

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