Equity (Details Textual) (USD $)	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended		1 Months Ended	9 Months Ended	0 Months Ended
	Jul. 31, 2013 IDT (Member)	Apr. 30, 2014 Class B common stock [Member]	Jul. 31, 2012 Class B common stock [Member]	Apr. 30, 2014 Class B common stock [Member] Chief Executive Officer [Member]	Apr. 30, 2014 Class B common stock [Member] Chief Financial Officer [Member]	Jan. 31, 2014 Class B common stock [Member] Non Employee Director [Member]	Apr. 30, 2014 Class B common stock [Member] Non Employee Director [Member]	Aug. 06, 2013 Class B common stock [Member] Consultants [Member]
Equity (Textual)
Stock issued during period, Shares				229,608	38,268	24,000	3,750	10,100
Aggregate fair value		$ 1,500,000				$ 200,000	$ 21,263	$ 100,000
Options exercise price		$ 5.67
Distributed shares		Stock issued by IDT and the 1 for 2 distribution ratio of the Spin-Off
Description of restricted shares vesting condition				Grants of restricted shares will vest as to one-third of the granted shares on each of August 2, 2014, 2015 and 2016, unless otherwise determined by the Compensation Committee of the Company's Board of Directors.	Grants of restricted shares will vest as to one-third of the granted shares on each of August 2, 2014, 2015 and 2016, unless otherwise determined by the Compensation Committee of the Company's Board of Directors.
Options to purchase number of shares at time of spin off	641,567		32,155