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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		6 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2023	Jan. 31, 2022
Earnings per share attributable to IDT Corporation common stockholders:
Basic weighted-average number of shares	25,510	25,652	25,556	25,609
Stock options	9	715	11	711
Non-vested restricted Class B common stock	19	175	10	260
Diluted weighted-average number of shares	25,538	26,542	25,577	26,580

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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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