Related Party Transactions (Details) (IDT [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012
IDT [Member]
Related Party Transaction, Due from (to) Related Party [Abstract]
Balance at beginning of year		$ 236,655
Payments by IDT on behalf of the Company	1,008	1,767
Deferred taxes offset against IDT net operating losses	12	3
Cash repayments, net of advances	1,737	(5,020)
Amount due to IDT contributed to equity	(2,757)	(233,405)
Balance at end of year
Average balance during the year	$ 1,099	$ 118,328