Consolidated Statements of Comprehensive (Loss) Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2012	Jan. 31, 2011
Net income (loss)	$ 2,929	$ 3,190	$ (2,144)	$ 19,029
Other comprehensive loss:
Change in unrealized gain (loss) on available-for-sale securities	6	(2)	4	129
Foreign currency translation adjustments	(2,035)	1,322	(2,829)	1,162
Other comprehensive (loss) income	(2,029)	1,320	(2,825)	1,291
Comprehensive income (loss)	900	4,510	(4,969)	20,320
Comprehensive (income) loss attributable to noncontrolling interests	(266)	745	469	549
Comprehensive income (loss) attributable to IDT Corporation	$ 634	$ 5,255	$ (4,500)	$ 20,869