Related Party Transactions (Details) (Transition Service Agreement [Member], IDT [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014
Transition Service Agreement [Member] | IDT [Member]
Related Party Transaction, Due from (to) Related Party [Abstract]
Included in direct cost of revenues		$ 19		$ 28
Included in selling, general and administrative	$ 43	$ 319	$ 464	$ 592