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Other Operating Losses, Net (Details Textual) - USD ($) $ in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 09, 2017 | Apr. 29, 2017 | Jul. 31, 2017
Other Operating Expenses (Textual) |  |  |
Stockholders, ownership percentage | 22.00% |  |
Ownership interest exchange | $ 6.0 |  |
Liability related to the settlement and mutual release | 10.0 |  |
Legal fees on settlement and mutual release |  |  | $ 0.9
Proceeds related to the FCC investigation |  |  | $ 0.5
Straight Path [Member] |  |  |
Other Operating Expenses (Textual) |  |  |
Settlement and mutual release payment | 10.0 | $ 10.0 |
Straight Path IP Group [Member] |  |  |
Other Operating Expenses (Textual) |  |  |
Settlement and mutual release payment | $ 6.0 |  |

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