Related Parties - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		9 Months Ended
	Apr. 30, 2014	Oct. 31, 2013	Apr. 30, 2014	Jul. 31, 2013	Apr. 30, 2014 Put Option [Member]	Apr. 30, 2014 Symbio Investment Corporation [Member]	Aug. 27, 2007 Symbio Investment Corporation [Member]	Aug. 01, 2007 Symbio Investment Corporation [Member]
Related Party Transaction [Line Items]
Strategic Investment in Symbio							$ 400,000	$ 500,000
Strategic Investment in Symbio, Shares							200,000	250,000
Percentage of shares							4.00%	4.00%
Expiration Date of put option					Jan. 01, 2015
Selling of shares through put option to David lee					200,000
Price per share					$ 2.00
Sale of shares without exercise of the put option			200,000
Compensation for Mr. Lee's services						45,000
Increase in investments and a capital contribution by David Lee						90,000
Payments to David Lee of the proceeds			1,000,000
Additional payments to David Lee			50.00%
Impairment of investment	394,000	394,000	394,000
Investments	$ 596,000		$ 596,000	$ 990,000