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PARTICIPATING INTERESTS IN EXPORT WATER (Details) - USD ($) | 12 Months Ended
--- | ---
Aug. 31, 2018 | Aug. 31, 2017 | Aug. 31, 2016
PARTICIPATING INTERESTS IN EXPORT WATER [Abstract] |  |  |
Percentage of original recorded liability compared to original total liability | 35.00% |  |
Percentage of payment remitted to CAA holders allocated to recorded liability account | 35.00% |  |
Percentage of payment remitted to CAA holders allocated to contingent obligation | 65.00% |  |
Percentage of net proceeds from sale of export water allocated | 88.00% |  |
Export Water Proceeds Received [Roll Forward] |  |  |
Balance at beginning of period | $ 1,319,900 | $ 1,261,800 | $ 0
Acquisitions |  |  | 0
Relinquishment |  |  | 0
Option payments - Sky Ranch and The Hills at Sky Ranch |  |  | 110,400
Arapahoe County tap fees |  |  | 533,000
Export water sale payments | 60,800 | 58,100 | 618,400
Balance at end of period | 1,380,700 | 1,319,900 | 1,261,800
Initial Export Water Proceeds To Pure Cycle [Roll Forward] |  |  |
Balance at beginning of period | 29,691,700 | 29,742,900 | 218,500
Acquisitions |  |  | 28,042,500
Relinquishment |  |  | 2,386,400
Option payments - Sky Ranch and The Hills at Sky Ranch |  |  | (42,300)
Arapahoe County tap fees |  |  | (373,100)
Export water sale payments | (53,600) | (51,200) | (489,100)
Balance at end of period | 29,638,100 | 29,691,700 | 29,742,900
Total Potential Third-Party Obligation [Roll Forward] |  |  |
Balance at beginning of period | 1,014,600 | 1,021,500 | 31,807,700
Acquisitions |  |  | (28,042,500)
Relinquishment |  |  | (2,386,400)
Option payments - Sky Ranch and The Hills at Sky Ranch |  |  | (68,100)
Arapahoe County tap fees |  |  | (159,900)
Export water sale payments | (7,200) | (6,900) | (129,300)
Balance at end of period | 1,007,400 | 1,014,600 | 1,021,500
Participating Interests Liability [Roll Forward] |  |  |
Balance at beginning of period | 341,558 | 344,000 | 11,090,600
Acquisitions |  |  | (9,790,000)
Relinquishment |  |  | (832,100)
Option payments - Sky Ranch and The Hills at Sky Ranch |  |  | (23,800)
Arapahoe County tap fees |  |  | (55,800)
Export water sale payments | (2,500) | (2,400) | (44,900)
Balance at end of period | 339,035 | 341,558 | 344,000
Contingency [Roll Forward] |  |  |
Balance at beginning of period | 673,000 | 677,500 | 20,717,100
Acquisitions |  |  | (18,252,500)
Relinquishment |  |  | (1,554,300)
Option payments - Sky Ranch and The Hills at Sky Ranch |  |  | (44,300)
Arapahoe County tap fees |  |  | (104,100)
Export water sale payments | (4,700) | (4,500) | (84,400)
Balance at end of period | 668,300 | $ 673,000 | $ 677,500
Export Water [Abstract] |  |  |
Expected future export water payouts | 6,600,000 |  |
Revenue receivables from sale of export water | $ 5,800,000 |  |

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