Commitments and Contingencies (Details) (USD $)	9 Months Ended		1 Months Ended	9 Months Ended		0 Months Ended
	Apr. 30, 2014 Maximum [Member]	Apr. 30, 2014 Minimum [Member]	Jun. 30, 2013 Straight Path Spectrum [Member] Former Chief Executive Officer [Member]	Apr. 30, 2014 Straight Path Spectrum [Member] Former Chief Executive Officer [Member]	Apr. 30, 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%
Maximum aggregate amount to be covered from revenue			4,000,000
Cumulative amount paid for payment from future revenues from spectrum obligation				100,000
Recoverable contingency patents allegedly infringed, percentage	40.00%	0.00%
Settlement of litigation, description					Straight Path IP 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. One of such law firms has the right to 30% of the proceeds from any monetization of the Droplet patent portfolio, as such assets were received in settlement of litigation.
Pending arbitration unsubstantiated valuation assertion amount						5,000,000,000
License and settlement, amount					13,200,000
Subsequent of spin off secured value					12,300,000
Settlement expenses					$ 6,600,000