Schedule of Asset Retirement Obligation (Details) (USD $)	12 Months Ended
	Jul. 31, 2014
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 1	$ 4,078,080
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 2	3,112,374
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 3	(381,197)
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 4	435,758
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 5	0
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 6	435,004
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 7	(23,382)
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 8	(109,916)
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 9	294,088
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 10	204,860
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 11	3,967,589
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 12	4,078,080
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 13	(198,816)
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 14	(836,073)
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 15	3,768,773
Asset Retirement Obligations Schedule Of Asset Retirement Obligation 16	$ 3,242,007