Equity (Tables)

6 Months Ended

Jan. 31, 2018

Equity [Abstract]

Summary of changes in the components of equity

	Six Months Ended  January 31, 2018
	Attributable to IDT Corporation			Noncontrolling Interests			Total
	(in thousands)
Balance, July 31, 2017	$	145,734		$	8,823		$	154,557
Dividends declared ($0.38 per share)		(9,440	)		—			(9,440	)
Restricted Class B common stock purchased from employees		(61	)		—			(61	)
Transfer of right to receive equity to Howard S. Jonas		—			(40	)		(40	)
Consolidation of Lipomedix Pharmaceuticals Ltd.		—			558			558
Distributions to noncontrolling interests		—			(717	)		(717	)
Stock-based compensation		1,797			—			1,797
Comprehensive income:
Net loss		(576	)		470			(106	)
Other comprehensive loss		(188	)		—			(188	)
Comprehensive income		(764	)		470			(294	)
Balance, January 31, 2018	$	137,266		$	9,094		$	146,360