CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012	Jul. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 151,504	$ 220,426
Restricted cash and cash equivalents-short-term	12,636	4,128
Certificates of deposit		3,542
Trade accounts receivable, net of allowance for doubtful accounts of $13,055 and $15,375 at July 31, 2012 and 2011, respectively	83,054	100,146
Prepaid expenses	18,800	21,920
Investments-short-term	86	198
Deferred income tax assets, net-current portion	5,142
Other current assets	17,436	13,720
Assets of discontinued operations		63,140
TOTAL CURRENT ASSETS	288,658	427,220
Property, plant and equipment, net	85,567	90,471
Goodwill	14,614	15,012
Other intangibles, net	1,907	2,661
Investments-long-term	7,133	8,721
Restricted cash and cash equivalents-long-term	9,466	12,241
Deferred income tax assets, net-long-term portion	31,744
Other assets	12,025	11,840
TOTAL ASSETS	451,114	568,166
CURRENT LIABILITIES:
Trade accounts payable	39,845	40,802
Accrued expenses	161,266	166,617
Deferred revenue	84,588	78,852
Customer deposits	10,524	1,467
Income taxes payable	1,337	2,257
Capital lease obligations-current portion		1,701
Notes payable-current portion	560	611
Other current liabilities	3,245	3,287
Liabilities of discontinued operations		25,826
TOTAL CURRENT LIABILITIES	301,365	321,420
Notes payable-long-term portion	29,716	29,564
Income taxes payable-long-term portion		3,781
Other liabilities	17,308	9,611
TOTAL LIABILITIES	348,389	364,376
Commitments and contingencies
IDT Corporation stockholders' equity:
Preferred stock, $.01 par value; authorized shares-10,000; no shares issued
Additional paid-in capital	395,869	520,732
Treasury stock, at cost, consisting of 1,698 and 1,698 shares of Class A common stock and 2,770 and 2,477 shares of Class B common stock at July 31, 2012 and 2011, respectively	(97,757)	(94,941)
Accumulated other comprehensive income	202	3,027
Accumulated deficit	(196,358)	(219,992)
Total IDT Corporation stockholders' equity	102,230	209,095
Noncontrolling interests:
Noncontrolling interests	495	(4,305)
Receivable for issuance of equity		(1,000)
Total noncontrolling interests	495	(5,305)
TOTAL EQUITY	102,725	203,790
TOTAL LIABILITIES AND EQUITY	451,114	568,166
Class A Common Stock [Member]
IDT Corporation stockholders' equity:
Common stock value	33	33
Class B Common Stock [Member]
IDT Corporation stockholders' equity:
Common stock value	$ 241	$ 236