Description of Business and Summary of Significant Accounting Policies (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	Oct. 31, 2010	Jul. 31, 2016
Straight Path Spectrum [Member]
Description of Business and Summary of Significant Accounting Policies (Textual)
Percentage of ownership		100.00%
Renewal of 39 GHz FCC licenses	$ 210,000
License patent expiration date	Oct. 18, 2020
Description of License	The Company included the license renewal costs in other assets, which are being charged to expense on a straight-line basis over the ten-year term of the licenses.
Straight Path IP Group [Member]
Description of Business and Summary of Significant Accounting Policies (Textual)
Percentage of ownership		84.50%
Settlement of litigation, description		Intellectual property rights a percentage of the amounts recovered ranging from 0% to 40% depending on several factors.
Straight Path Ventures [Member]
Description of Business and Summary of Significant Accounting Policies (Textual)
Percentage of ownership		100.00%