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Schedule of Accumulated Balances for Each Classification of Other Comprehensive (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss			$ (18,142)
Other comprehensive (loss) income attributable to IDT Corporation	$ (213)	$ 33	(1,670)	$ (51)
Accumulated other comprehensive loss	(19,812)		(19,812)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss			(380)
Other comprehensive (loss) income attributable to IDT Corporation			131
Accumulated other comprehensive loss	(249)		(249)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss			(17,762)
Other comprehensive (loss) income attributable to IDT Corporation			(1,801)
Accumulated other comprehensive loss	$ (19,563)		$ (19,563)

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