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Schedule of Weighted-average Number of Shares Used in the Calculation of Basic and Diluted Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended
	Oct. 31, 2022	Oct. 31, 2021
Earnings (loss) per share attributable to IDT Corporation common stockholders:
Basic weighted-average number of shares	25,603	25,566
Stock options	12
Non-vested restricted Class B common stock	1
Diluted weighted-average number of shares	25,616	25,566

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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