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Note 7 - Significant Customers (Detail) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Feb. 28, 2013 | Feb. 29, 2012 | Feb. 28, 2013 | Feb. 29, 2012 | Aug. 31, 2012
The District [Member] |  |  |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 24.00% | 93.00% | 45.00% | 91.00% |
Entity-Wide Accounts Receivable, Major Customer, Percentage | 10.00% |  | 10.00% |  | 16.00%
The District's Significant Customer [Member] |  |  |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 24.00% | 80.00% | 37.00% | 71.00% |
Entity-Wide Accounts Receivable, Major Customer, Percentage | 9.00% |  | 9.00% |  | 13.00%
Another Customer [Member] |  |  |  |  |
Entity-Wide Revenue, Major Customer, Percentage | 71.00% |  | 50.00% |  |

X
- Definition Percentage of accounts receivable generated from a single external customer that accounts for 10 percent or more of an entity's accounts receivable. + References No definition available. + Details
Name: | pcyo_EntityWideAccountsReceivableMajorCustomerPercentage
Namespace Prefix: | pcyo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues. + References No definition available. + Details
Name: | us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration