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Presentation of Interim Information (Details Narrative) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
May 31, 2013 acre | Aug. 31, 2012 | May 31, 2012 | May 31, 2013 acre | May 31, 2012
Unrealized Loss on Securities |  | $ 1,081 |  |  |
Long-term Debt | 3,400,000 |  |  | 3,400,000 |
Shares of common stock held as pledged assets |  |  |  | 1,500,000 |
Increase (Decrease) in Notes Payable, Current |  |  |  | 6,900,000 |
Notes Payable | 6,600,000 | 9,600,000 |  | 6,600,000 |
Repayments of Notes Payable | 1,400,000 |  |  | 1,686,340 |
Issuance of notes | 5,600,000 |  |  |  |
Note Payable Term | 5 years |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.00% |  |  | 5.00% |
Number of water taps subject to tap participation fee | 19,427 |  |  | 19,427 |
Interest Expense, Other | 871,864 |  | 872,980 | 2,416,619 | 2,586,780
Recognition Of Deferred Water Tap Fees | 3,574 |  | 3,574 | 10,721 | 10,722
Recognition Of Deferred Construction Funding | 10,377 |  | 10,377 | 31,131 | 31,131
Management fee, percentage of income from land and water leases | 100.00% |  |  | 100.00% |
Allowance for Doubtful Accounts Receivable, Current | 41,000 | 20,400 |  | 41,000 |
Royalty Revenue | 103,600 |  | 104,600 | 310,900 | 319,400
Deferred Revenue, Leases, Net | 1,243,400 |  |  | 1,243,400 |
Number of acres for exploration and development | 634 |  |  | 634 |
Share-based Compensation | 19,200 |  | 13,600 | 42,252 | 42,257
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) |  |  |  | 247,600 | 263,100
County Tap And Construction Fee Deferred Revenue |  |  |  |  |
Deferred Revenue | 1,300,000 |  |  | 1,300,000 |
Farm Income |  |  |  |  |
Deferred Revenue | 82,565 |  |  | 82,565 |
Deferred O And G Lease Revenue |  |  |  |  |
Deferred Revenue | $ 328,100 |  |  | $ 328,100 |

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