<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.21.4</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>161</ContextCount>
  <ElementCount>358</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>64</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>13</UnitCount>
  <MyReports>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00090 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00100 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/StatementConsolidatedBalanceSheets</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00105 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/StatementConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00200 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/StatementConsolidatedStatementsOfOperations</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF OPERATIONS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00300 - Statement - CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/StatementConsolidatedStatementOfShareholdersEquity</Role>
      <ShortName>CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00400 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/StatementConsolidatedStatementsOfCashFlows</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>10101 - Disclosure - PRESENTATION OF INTERIM INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosurePresentationOfInterimInformation</Role>
      <ShortName>PRESENTATION OF INTERIM INFORMATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>10201 - Disclosure - REIMBURSABLE PUBLIC IMPROVEMENTS AND NOTE RECEIVABLE FROM THE SKY RANCH CAB</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureReimbursablePublicImprovementsAndNoteReceivableFromSkyRanchCab</Role>
      <ShortName>REIMBURSABLE PUBLIC IMPROVEMENTS AND NOTE RECEIVABLE FROM THE SKY RANCH CAB</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>10301 - Disclosure - REVENUE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureRevenue</Role>
      <ShortName>REVENUE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>10401 - Disclosure - FAIR VALUE MEASUREMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureFairValueMeasurements</Role>
      <ShortName>FAIR VALUE MEASUREMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>10501 - Disclosure - WATER, LAND AND OTHER FIXED ASSETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureWaterLandAndOtherFixedAssets</Role>
      <ShortName>WATER, LAND AND OTHER FIXED ASSETS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>10601 - Disclosure - DEBT ASSOCIATED WITH THE SINGLE-FAMILY RENTAL HOME NOTE PAYABLE AND OTHER LONG-TERM OBLIGATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureDebtAssociatedWithSingleFamilyRentalHomeNotePayableAndOtherLongTermObligations</Role>
      <ShortName>DEBT ASSOCIATED WITH THE SINGLE-FAMILY RENTAL HOME NOTE PAYABLE AND OTHER LONG-TERM OBLIGATIONS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>10701 - Disclosure - SHAREHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureShareholdersEquity</Role>
      <ShortName>SHAREHOLDERS' EQUITY</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>10801 - Disclosure - RELATED PARTY TRANSACTIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureRelatedPartyTransactions</Role>
      <ShortName>RELATED PARTY TRANSACTIONS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>10901 - Disclosure - SIGNIFICANT CUSTOMERS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureSignificantCustomers</Role>
      <ShortName>SIGNIFICANT CUSTOMERS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>11001 - Disclosure - ACCRUED LIABILITIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureAccruedLiabilities</Role>
      <ShortName>ACCRUED LIABILITIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>11101 - Disclosure - SEGMENT INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureSegmentInformation</Role>
      <ShortName>SEGMENT INFORMATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>11201 - Disclosure - EARNINGS PER SHARE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureEarningsPerShare</Role>
      <ShortName>EARNINGS PER SHARE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>11301 - Disclosure - INCOME TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureIncomeTaxes</Role>
      <ShortName>INCOME TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>20102 - Disclosure - PRESENTATION OF INTERIM INFORMATION (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosurePresentationOfInterimInformationPolicies</Role>
      <ShortName>PRESENTATION OF INTERIM INFORMATION (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>30203 - Disclosure - REIMBURSABLE PUBLIC IMPROVEMENTS AND NOTE RECEIVABLE FROM THE SKY RANCH CAB (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureReimbursablePublicImprovementsAndNoteReceivableFromSkyRanchCabTables</Role>
      <ShortName>REIMBURSABLE PUBLIC IMPROVEMENTS AND NOTE RECEIVABLE FROM THE SKY RANCH CAB (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureReimbursablePublicImprovementsAndNoteReceivableFromSkyRanchCab</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>30303 - Disclosure - REVENUE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureRevenueTables</Role>
      <ShortName>REVENUE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureRevenue</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>30503 - Disclosure - WATER, LAND AND OTHER FIXED ASSETS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureWaterLandAndOtherFixedAssetsTables</Role>
      <ShortName>WATER, LAND AND OTHER FIXED ASSETS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureWaterLandAndOtherFixedAssets</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>30603 - Disclosure - DEBT ASSOCIATED WITH THE SINGLE-FAMILY RENTAL HOME NOTE PAYABLE AND OTHER LONG-TERM OBLIGATIONS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureDebtAssociatedWithSingleFamilyRentalHomeNotePayableAndOtherLongTermObligationsTables</Role>
      <ShortName>DEBT ASSOCIATED WITH THE SINGLE-FAMILY RENTAL HOME NOTE PAYABLE AND OTHER LONG-TERM OBLIGATIONS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureDebtAssociatedWithSingleFamilyRentalHomeNotePayableAndOtherLongTermObligations</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>30703 - Disclosure - SHAREHOLDERS' EQUITY (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureShareholdersEquityTables</Role>
      <ShortName>SHAREHOLDERS' EQUITY (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureShareholdersEquity</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>31003 - Disclosure - ACCRUED LIABILITIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureAccruedLiabilitiesTables</Role>
      <ShortName>ACCRUED LIABILITIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureAccruedLiabilities</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>31103 - Disclosure - SEGMENT INFORMATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureSegmentInformationTables</Role>
      <ShortName>SEGMENT INFORMATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureSegmentInformation</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>31203 - Disclosure - EARNINGS PER SHARE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureEarningsPerShareTables</Role>
      <ShortName>EARNINGS PER SHARE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureEarningsPerShare</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>31303 - Disclosure - INCOME TAXES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureIncomeTaxesTables</Role>
      <ShortName>INCOME TAXES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureIncomeTaxes</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>40201 - Disclosure - REIMBURSABLE PUBLIC IMPROVEMENTS AND NOTE RECEIVABLE FROM THE SKY RANCH CAB (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureReimbursablePublicImprovementsAndNoteReceivableFromSkyRanchCabDetails</Role>
      <ShortName>REIMBURSABLE PUBLIC IMPROVEMENTS AND NOTE RECEIVABLE FROM THE SKY RANCH CAB (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureReimbursablePublicImprovementsAndNoteReceivableFromSkyRanchCabTables</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>40301 - Disclosure - REVENUE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureRevenueDetails</Role>
      <ShortName>REVENUE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureRevenueTables</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>40302 - Disclosure - REVENUE - Deferred Revenue by Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureRevenueDeferredRevenueBySegmentDetails</Role>
      <ShortName>REVENUE - Deferred Revenue by Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>40303 - Disclosure - REVENUE - Changes in Deferred Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureRevenueChangesInDeferredRevenueDetails</Role>
      <ShortName>REVENUE - Changes in Deferred Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>40401 - Disclosure - FAIR VALUE MEASUREMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureFairValueMeasurementsDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureFairValueMeasurements</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>40501 - Disclosure - WATER, LAND AND OTHER FIXED ASSETS - Schedule of investment in water and water systems (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureWaterLandAndOtherFixedAssetsScheduleOfInvestmentInWaterAndWaterSystemsDetails</Role>
      <ShortName>WATER, LAND AND OTHER FIXED ASSETS - Schedule of investment in water and water systems (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>40502 - Disclosure - WATER, LAND AND OTHER FIXED ASSETS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureWaterLandAndOtherFixedAssetsDetails</Role>
      <ShortName>WATER, LAND AND OTHER FIXED ASSETS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureWaterLandAndOtherFixedAssetsTables</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>40601 - Disclosure - DEBT ASSOCIATED WITH THE SINGLE-FAMILY RENTAL HOME NOTE PAYABLE AND OTHER LONG-TERM OBLIGATIONS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureDebtAssociatedWithSingleFamilyRentalHomeNotePayableAndOtherLongTermObligationsDetails</Role>
      <ShortName>DEBT ASSOCIATED WITH THE SINGLE-FAMILY RENTAL HOME NOTE PAYABLE AND OTHER LONG-TERM OBLIGATIONS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureDebtAssociatedWithSingleFamilyRentalHomeNotePayableAndOtherLongTermObligationsTables</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>40602 - Disclosure - DEBT ASSOCIATED WITH THE SINGLE-FAMILY RENTAL HOME NOTE PAYABLE AND OTHER LONG-TERM OBLIGATIONS - Maturities of the SFR Note (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureDebtAssociatedWithSingleFamilyRentalHomeNotePayableAndOtherLongTermObligationsMaturitiesOfSfrNoteDetails</Role>
      <ShortName>DEBT ASSOCIATED WITH THE SINGLE-FAMILY RENTAL HOME NOTE PAYABLE AND OTHER LONG-TERM OBLIGATIONS - Maturities of the SFR Note (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>40603 - Disclosure - DEBT ASSOCIATED WITH THE SINGLE-FAMILY RENTAL HOME NOTE PAYABLE AND OTHER LONG-TERM OBLIGATIONS - Lot Construction Obligations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureDebtAssociatedWithSingleFamilyRentalHomeNotePayableAndOtherLongTermObligationsLotConstructionObligationsDetails</Role>
      <ShortName>DEBT ASSOCIATED WITH THE SINGLE-FAMILY RENTAL HOME NOTE PAYABLE AND OTHER LONG-TERM OBLIGATIONS - Lot Construction Obligations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>40701 - Disclosure - SHAREHOLDERS' EQUITY, Stock Option Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureShareholdersEquityStockOptionActivityDetails</Role>
      <ShortName>SHAREHOLDERS' EQUITY, Stock Option Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>40702 - Disclosure - SHAREHOLDERS' EQUITY, Non-Vested Options (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureShareholdersEquityNonVestedOptionsDetails</Role>
      <ShortName>SHAREHOLDERS' EQUITY, Non-Vested Options (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>40801 - Disclosure - RELATED PARTY TRANSACTIONS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureRelatedPartyTransactionsDetails</Role>
      <ShortName>RELATED PARTY TRANSACTIONS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureRelatedPartyTransactions</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>40901 - Disclosure - SIGNIFICANT CUSTOMERS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureSignificantCustomersDetails</Role>
      <ShortName>SIGNIFICANT CUSTOMERS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureSignificantCustomers</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>41001 - Disclosure - ACCRUED LIABILITIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureAccruedLiabilitiesDetails</Role>
      <ShortName>ACCRUED LIABILITIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureAccruedLiabilitiesTables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>41101 - Disclosure - SEGMENT INFORMATION, Revenue by Segments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureSegmentInformationRevenueBySegmentsDetails</Role>
      <ShortName>SEGMENT INFORMATION, Revenue by Segments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>41102 - Disclosure - SEGMENT INFORMATION, Corporate Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureSegmentInformationCorporateAssetsDetails</Role>
      <ShortName>SEGMENT INFORMATION, Corporate Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>41201 - Disclosure - EARNINGS PER SHARE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureEarningsPerShareDetails</Role>
      <ShortName>EARNINGS PER SHARE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureEarningsPerShareTables</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="pcyo-20211130x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>41301 - Disclosure - INCOME TAXES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://purecyclewater.com/role/DisclosureIncomeTaxesDetails</Role>
      <ShortName>INCOME TAXES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://purecyclewater.com/role/DisclosureIncomeTaxesTables</ParentRole>
      <Position>48</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-Q" original="pcyo-20211130x10q.htm">pcyo-20211130x10q.htm</File>
    <File>pcyo-20211130.xsd</File>
    <File>pcyo-20211130_cal.xml</File>
    <File>pcyo-20211130_def.xml</File>
    <File>pcyo-20211130_lab.xml</File>
    <File>pcyo-20211130_pre.xml</File>
    <File>pcyo-20211130xex31d1.htm</File>
    <File>pcyo-20211130xex31d2.htm</File>
    <File>pcyo-20211130xex32d1.htm</File>
    <File>pcyo-20211130xex32d2.htm</File>
  </InputFiles>
  <SupplementalFiles>
    <File>pcyo-20211130x10q001.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2020-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/us-gaap/2020-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/srt/2020-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
