Basis of Presentation - Additional Information (Detail) (USD $)	9 Months Ended
Apr. 30, 2013
Notes Payable [Line Items]
Carrying value of the Company's investment in Symbio Investment Corp	990,000
Former Shareholders [Member]
Notes Payable [Line Items]
Discount rate of Cortelco	15.22%

Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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Reference 9: http://www.xbrl.org/2003/role/presentationRef

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Reference 10: http://www.xbrl.org/2003/role/presentationRef

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