Commitments and Contingencies (Details) (USD $)	3 Months Ended		1 Months Ended	3 Months Ended		0 Months Ended
	Oct. 31, 2014 Maximum [Member]	Oct. 31, 2014 Minimum [Member]	Jun. 30, 2013 Straight Path Spectrum [Member] Former Chief Executive Officer [Member]	Oct. 31, 2014 Straight Path Spectrum [Member] Former Chief Executive Officer [Member]	Oct. 31, 2014 Straight Path IP [Member]	Mar. 15, 2013 Straight Path IP [Member] Former Chief Executive Officer [Member]
Commitments and Contingencies (Textual)
Outstanding common stock of Straight Path IP Percentage						5.00%
Compensatory damages						$ 35,000,000
Payments to be made from revenue, percentage			50.00%
Amount of maximum future payment for wireless spectrum licenses			3,250,000
Cumulative amount paid for payment from future revenues from spectrum obligation				$ 14,000
Recoverable contingency patents allegedly infringed, percentage	40.00%	0.00%
Settlement of litigation, description					Straight Path IP Group generally pays law firms that represent it in litigation against alleged infringers of its intellectual property rights a percentage of the amounts recovered ranging from 0% to 40% depending on several factors.