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401(k) PLAN (Details Narrative) - USD ($) | 12 Months Ended
--- | ---
Aug. 31, 2017 | Aug. 31, 2016 | Aug. 31, 2015
K Plan Details Narrative |  |  |
Administrative fees paid for plan | $ 4,200 | $ 5,000 | $ 3,800

X
- References No definition available. + Details
Name: | pcyo_Disclosure401KPlanDetailsNarrativeAbstract
Namespace Prefix: | pcyo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of administrative expense incurred by defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanAdministrativeExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration