Equity (Tables)

9 Months Ended

Apr. 30, 2016

Equity [Abstract]

Summary of changes in the components of equity

	Nine Months Ended April 30, 2016
	Attributable to IDT Corporation			Noncontrolling Interests			Total
	(in thousands)
Balance, July 31, 2015	$	133,831		$	1,109		$	134,940
Dividends declared ($0.56 per share)		(12,983	)		—			(12,983	)
Restricted Class B common stock purchased from employees		(134	)		—			(134	)
Repurchases of Class B common stock through repurchase program		(4,639	)		—			(4,639	)
Exercise of subsidiary stock options		—			9			9
Stock issued for matching contributions to the 401(k) Plan		1,411			—			1,411
Distributions to noncontrolling interests		—			(1,545	)		(1,545	)
Stock-based compensation		2,317			—			2,317
Comprehensive income:
Net income		12,496			1,445			13,941
Other comprehensive loss		(1,553	)		—			(1,553	)
Comprehensive income		10,943			1,445			12,388
Balance, April 30, 2016	$	130,746		$	1,018		$	131,764