Schedule of Undiscounted Amounts of Estimated Cash Flows, 5 Years (Details) (USD $)	3 Months Ended
	Oct. 31, 2014
Asset Retirement Obligations Schedule Of Undiscounted Amounts Of Estimated Cash Flows, 5 Years 1	$ 198,816
Asset Retirement Obligations Schedule Of Undiscounted Amounts Of Estimated Cash Flows, 5 Years 2	340,827
Asset Retirement Obligations Schedule Of Undiscounted Amounts Of Estimated Cash Flows, 5 Years 3	1,082,173
Asset Retirement Obligations Schedule Of Undiscounted Amounts Of Estimated Cash Flows, 5 Years 4	635,932
Asset Retirement Obligations Schedule Of Undiscounted Amounts Of Estimated Cash Flows, 5 Years 5	0
Asset Retirement Obligations Schedule Of Undiscounted Amounts Of Estimated Cash Flows, 5 Years 6	4,124,801
Asset Retirement Obligations Schedule Of Undiscounted Amounts Of Estimated Cash Flows, 5 Years 7	$ 6,382,549