Related Party Transactions (Details) (Transition Service Agreement [Member], IDT [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013
Transition Service Agreement [Member] | IDT [Member]
Related Party Transaction, Due from (to) Related Party [Abstract]
Included in direct cost of revenues	$ 19	$ 13	$ 28	$ 25
Included in selling, general and administrative expenses	$ 319	$ 135	$ 592	$ 316