Deferred Revenue (Details) (USD $)	0 Months Ended
	Feb. 17, 2015	Nov. 13, 2014	Oct. 31, 2014	Sep. 17, 2014	Sep. 08, 2014	Sep. 09, 2014	Aug. 13, 2014	Jul. 28, 2014	Jul. 22, 2014	May 15, 2014	Dec. 17, 2013	May 30, 2013	Apr. 16, 2013	Apr. 30, 2015	Jul. 31, 2014
Deferred Revenue Arrangement [Line Items]
Proceeds from funding agreement	$ 988,042	$ 1,033,614	$ 500,000	$ 500,000	$ 444,530	$ 500,000	$ 422,344	$ 111,470		$ 300,000	$ 250,000	$ 150,000	$ 600,000
Interest in asset	1.97609%	2.06723%	0.98%	1.00%	0.88906%	0.98%	0.84469%	0.22294%		1.50%	0.50%	1.50%	6.00%
Number of shares issuable	300,000		50,000	62,500		50,000				37,500	31,250	18,750	75,000
Deferred Revenue, Additions									3,000,000
Deferred revenue														$ 5,800,000	$ 1,411,470