Schedule of Asset Retirement Obligation (Details) (USD $)	3 Months Ended
	Oct. 31, 2014
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 1	$ 3,967,589
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 2	68,534
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 3	4,036,123
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 4	(284,023)
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 5	$ 3,752,100