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Long-Term Obligations and Operating Lease (Details) (USD $)
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9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||||||||||||
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May 31, 2013
Export Water Proceeds Received
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Aug. 31, 2012
Export Water Proceeds Received
|
May 31, 2013
Initial Export Water Proceeds To Pure Cycle
|
Aug. 31, 2012
Initial Export Water Proceeds To Pure Cycle
|
Aug. 31, 2011
Initial Export Water Proceeds To Pure Cycle
|
May 31, 2013
Total Potential Third Party Obligation
|
Aug. 31, 2012
Total Potential Third Party Obligation
|
Aug. 31, 2011
Total Potential Third Party Obligation
|
May 31, 2013
Participating Interests Liability
|
Aug. 31, 2012
Participating Interests Liability
|
Aug. 31, 2011
Participating Interests Liability
|
May 31, 2013
Contingency
|
Aug. 31, 2012
Contingency
|
Aug. 31, 2011
Contingency
|
Aug. 31, 2011
Export Water Sale Payments
|
May 31, 2013
Export Water Sale Payments
Export Water Proceeds Received
|
Aug. 31, 2012
Export Water Sale Payments
Export Water Proceeds Received
|
May 31, 2013
Export Water Sale Payments
Initial Export Water Proceeds To Pure Cycle
|
Aug. 31, 2012
Export Water Sale Payments
Initial Export Water Proceeds To Pure Cycle
|
May 31, 2013
Export Water Sale Payments
Total Potential Third Party Obligation
|
Aug. 31, 2012
Export Water Sale Payments
Total Potential Third Party Obligation
|
May 31, 2013
Export Water Sale Payments
Participating Interests Liability
|
Aug. 31, 2012
Export Water Sale Payments
Participating Interests Liability
|
May 31, 2013
Export Water Sale Payments
Contingency
|
Aug. 31, 2012
Export Water Sale Payments
Contingency
|
Aug. 31, 2012
Acquisitions
Export Water Proceeds Received
|
Aug. 31, 2012
Acquisitions
Initial Export Water Proceeds To Pure Cycle
|
Aug. 31, 2012
Acquisitions
Total Potential Third Party Obligation
|
Aug. 31, 2012
Acquisitions
Participating Interests Liability
|
Aug. 31, 2012
Acquisitions
Contingency
|
Aug. 31, 2012
Option Payments
Export Water Proceeds Received
|
Aug. 31, 2012
Option Payments
Initial Export Water Proceeds To Pure Cycle
|
Aug. 31, 2012
Option Payments
Total Potential Third Party Obligation
|
Aug. 31, 2012
Option Payments
Participating Interests Liability
|
Aug. 31, 2012
Option Payments
Contingency
|
Aug. 31, 2012
Arapahoe County Tap Fee
Export Water Proceeds Received
|
Aug. 31, 2012
Arapahoe County Tap Fee
Initial Export Water Proceeds To Pure Cycle
|
Aug. 31, 2012
Arapahoe County Tap Fee
Total Potential Third Party Obligation
|
Aug. 31, 2012
Arapahoe County Tap Fee
Participating Interests Liability
|
Aug. 31, 2012
Arapahoe County Tap Fee
Contingency
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||||||||
| Balance | $ 912,700 | $ 754,700 | $ 27,692,100 | $ 27,802,700 | $ 218,500 | $ 3,421,400 | $ 3,468,800 | $ 31,807,700 | $ 1,192,400 | $ 1,208,900 | $ 11,090,600 | $ 2,229,000 | $ 2,259,900 | $ 20,717,100 | |||||||||||||||||||||||||||||||||
| Activities | $ 158,000 | $ 111,300 | $ (110,600) | $ (77,900) | $ (47,400) | $ (33,400) | $ (16,500) | $ (12,100) | $ (30,900) | $ (21,300) | $ 28,077,500 | $ (28,077,500) | $ (9,790,000) | $ (18,287,500) | $ 110,400 | $ (42,300) | $ (68,100) | $ (23,800) | $ (44,300) | $ 533,000 | [1] | $ (373,100) | [1] | $ (159,900) | [1] | $ (55,800) | [1] | $ (104,100) | [1] | ||||||||||||||||||
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