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Related Party Transactions (Details Textual) - USD ($) | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 31, 2012 | Oct. 31, 2012 | Jul. 31, 2015 | Jul. 31, 2014 | Jul. 31, 2013
Related Party Transaction [Line Items] |  |  |  |  |
Amount billed for electricity supplied and natural gas |  |  |  | $ 16,000 | $ 21,000
Number of Straight Path Class B common stock received |  |  | 64,624 |  |
Amount paid for Straight Path Class B common stock received |  |  | $ 2,100,000 |  |
Annual rent payment | $ 69,025 | $ 34,512 |  |  |
Lease period | 1 year |  |  |  |
Lease renewal period | 1 year |  |  |  |
Outstanding net loan receivable from employees |  |  | $ 300,000 | 200,000 |
Straight Path [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Receivable from subsidiaries included in other current assets |  |  |  | 29,000 |
Amount billed for electricity supplied and natural gas |  |  | $ 1,100,000 | 800,000 |
Jonas Media Group [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Receivable from subsidiaries included in other current assets |  |  | 7,000 | 4,000 |
Rent received for office space, connectivity and other services |  |  | 21,000 | 18,000 | 27,000
IGM Brokerage Corp [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Commissions and fees from payment by company |  |  | $ 20,000 | $ 20,000 | $ 15,000
Insurance payment made by the company |  |  |  |  |
Genie And Subsidiaries [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Receivable from subsidiaries included in other current assets |  |  | $ 500,000 | $ 500,000 |
Amount billed for electricity supplied and natural gas |  |  | 3,600,000 | 3,100,000 | $ 3,800,000
Mason And Company [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Commissions and fees from payment by company |  |  | $ 18,000 | $ 18,000 | $ 24,000

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- Definition Amount paid for related party shares received in connection with the restricted stock. + References No definition available. + Details
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- Definition Number of related party shares received in connection with the restricted stock. + References No definition available. + Details
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- Definition Related party transaction aggregate payment made to related party. + References No definition available. + Details
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- Definition Related party transaction billings to related party for services. + References No definition available. + Details
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- Definition Costs of sales and operating expenses for the period incurred from transactions with related parties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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