Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Jul. 31, 2017

Accumulated Other Comprehensive Income (Loss) [Abstract]

Schedule of accumulated balances for each classification of other comprehensive income (loss)

(in thousands)	Unrealized gain (loss) on available-for- sale securities			Foreign currency translation			Accumulated other comprehensive income (loss)			Location of (Gain) Loss Recognized
Balance at July 31, 2014	$	(8	)	$	3,676		$	3,668
Sale of interest in Fabrix Systems Ltd.		—			102			102
Other comprehensive loss attributable to IDT Corporation		(567	)		(2,432	)		(2,999	)
Balance at July 31, 2015		(575	)		1,346			771
Zedge Spin-Off		—			1,029			1,029
Other comprehensive income (loss) attributable to IDT Corporation before reclassification		1,126			(6,127	)		(5,001	)
Less: reclassification for gain included in net income		(543	)		—			(543	)	Other income (expense), net
Net other comprehensive income (loss) attributable to IDT Corporation		583			(6,127	)		(5,544	)
Balance at July 31, 2016		8			(3,752	)		(3,744	)
Other comprehensive income (loss) attributable to IDT Corporation before reclassification		2,449			(725	)		1,724
Less: reclassification for gain included in net income		(323	)		—			(323	)	Other income (expense), net
Net other comprehensive income (loss) attributable to IDT Corporation (1)		2,126			(725	)		1,401
BALANCE AT JULY 31, 2017	$	2,134		$	(4,477	)	$	(2,343	)

(1) In fiscal 2017, net other comprehensive income attributable to IDT Corporation from unrealized gains on available-for-sale securities included unrealized gains on the Rafael convertible promissory notes of $2.1 million and unrealized gains, net on marketable securities of $26,000.