Basis of Presentation - Additional Information (Detail) (USD $)	3 Months Ended
	Oct. 31, 2013	Jul. 31, 2013
Telecommunications expertise	20 years
Carrying value of the Company's investment in Symbio Investment Corp	$ 990,000
Impairment of investment	394,000
Investments	$ 596,000	$ 990,000
Former Shareholders [Member]
Discount rate of Cortelco	15.22%