Equity (Tables)

6 Months Ended

Jan. 31, 2014

Equity [Abstract]

Summary of Changes in the components of equity

	Six Months Ended January 31, 2014
	Attributable to IDT Corporation			Noncontrolling Interests			Total
	(in thousands)
Balance, July 31, 2013	$	88,603		$	533		$	89,136
Dividends declared ($0.17 per share)		(3,917	)		—			(3,917	)
Restricted Class B common stock purchased from employees		(955	)		—			(955	)
Exercise of stock options		525			3			528
Stock issued for matching contributions to the 401(k) Plan		119			—			119
Purchases of stock of subsidiary		(1,154	)		21			(1,133	)
Adjustment to liabilities in connection with the Straight Path Spin-Off		(1,624	)		—			(1,624	)
Distributions to noncontrolling interests		—			(626	)		(626	)
Stock-based compensation		4,105			22			4,127
Comprehensive income:
Net income		6,058			965			7,023
Foreign currency translation adjustments		1,182			—			1,182
Comprehensive income		7,240			965			8,205
Balance, January 31, 2014	$	92,942		$	918		$	93,860