Commitments and Contingencies (Details) (USD $)	6 Months Ended	1 Months Ended	3 Months Ended		6 Months Ended	0 Months Ended
	Jan. 31, 2015	Jun. 30, 2013	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2014	Mar. 15, 2013
Maximum [Member]
Commitments and Contingencies (Textual)
Recoverable contingency patents allegedly infringed, percentage	40.00%
Minimum [Member]
Commitments and Contingencies (Textual)
Recoverable contingency patents allegedly infringed, percentage	0.00%
Straight Path Spectrum [Member] | Former Chief Executive Officer [Member]
Commitments and Contingencies (Textual)
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	49,000		28,000	21,000	54,000
Straight Path IP [Member]
Commitments and Contingencies (Textual)
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.
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