Settlement of Claims with IDT and Sale of Straight Path IP Group (Details Textual) - USD ($)	Apr. 09, 2017	Oct. 31, 2017	Aug. 02, 2017
Settlement of Claims with IDT and Sale of Straight Path IP Group (Textual)
Payment of IDT	$ 10,000,000
Percentage of net proceeds received by shareholders	22.00%		99.00%
Total incurred costs of negotiation and execution of term sheet	$ 1,029,000
Recognized a profit	2,276,000
Company contributed to trust		$ 750,000
Payement of remaining trust	3,750,000
Agreed amount to contribute to trust	4,500,000
Payment for ownership interest	$ 6,000,000

Agreed to contribution to assets to be held-in-trust.

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Total incurred cost of negotiation and execution of term sheet.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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