Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Revenues	$ 400,585	$ 376,777
Direct cost of revenues (exclusive of depreciation and amortization)	(335,264)	(319,352)
Gross profit	65,321	57,425
Operating expenses:
Selling, general and administrative (i)	55,226	51,783
Depreciation and amortization	3,135	4,442
Research and development	1,382	1,010
Total operating expenses	59,743	57,235
Other operating losses	(350)	(11,252)
Income (loss) from operations	5,228	(11,062)
Interest income (expense), net	109	(478)
Other income, net	885	189
Income (loss) from continuing operations before income taxes	6,222	(11,351)
(Provision for) benefit from income taxes	(2,054)	3,263
Income (loss) from continuing operations	4,168	(8,088)
Discontinued operations, net of tax:
Income from discontinued operations		1,015
Income on sale of discontinued operations		2,000
Total discontinued operations		3,015
Net income (loss)	4,168	(5,073)
Net (income) loss attributable to noncontrolling interests	(554)	747
Net income (loss) attributable to IDT Corporation	3,614	(4,326)
Amounts attributable to IDT Corporation common stockholders:
Income (loss) from continuing operations	3,614	(8,236)
Income from discontinued operations		3,910
Net income (loss)	3,614	(4,326)
Basic:
Income (loss) from continuing operations	$ 0.17	$ (0.40)
Income from discontinued operations		$ 0.19
Net income (loss)	$ 0.17	$ (0.21)
Weighted-average number of shares used in calculation of basic earnings per share	20,807	20,365
Diluted:
Income (loss) from continuing operations	$ 0.16	$ (0.40)
Income from discontinued operations		$ 0.19
Net income (loss)	$ 0.16	$ (0.21)
Weighted-average number of shares used in calculation of diluted earnings per share	22,084	20,365
Dividends declared per common share	$ 0.75	$ 0.23
(i) Stock-based compensation included in selling, general and administrative expenses	$ 2,225	$ 684