<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>208</ContextCount>
  <ElementCount>371</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>71</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>8</UnitCount>
  <MyReports>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>995200090 - Document - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document And Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>995200100 - Statement - Condensed Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/StatementCondensedConsolidatedBalanceSheets</Role>
      <ShortName>Condensed Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>995200105 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/StatementCondensedConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>995200200 - Statement - Condensed Consolidated Statements of Operations and Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/StatementCondensedConsolidatedStatementsOfOperationsAndComprehensiveIncome</Role>
      <ShortName>Condensed Consolidated Statements of Operations and Comprehensive Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>995200300 - Statement - Condensed Consolidated Statements of Mezzanine Equity and Changes in Stockholders' Equity (Deficit)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/StatementCondensedConsolidatedStatementsOfMezzanineEquityAndChangesInStockholdersEquityDeficit</Role>
      <ShortName>Condensed Consolidated Statements of Mezzanine Equity and Changes in Stockholders' Equity (Deficit)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>995200400 - Statement - Condensed Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/StatementCondensedConsolidatedStatementsOfCashFlows</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>995210101 - Disclosure - The Company and Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureCompanyAndBasisOfPresentation</Role>
      <ShortName>The Company and Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>995210201 - Disclosure - Significant Accounting Policies and Recent Accounting Pronouncements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSignificantAccountingPoliciesAndRecentAccountingPronouncements</Role>
      <ShortName>Significant Accounting Policies and Recent Accounting Pronouncements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>995210301 - Disclosure - Business Acquisitions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureBusinessAcquisitions</Role>
      <ShortName>Business Acquisitions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>995210401 - Disclosure - Discontinued Operations, Assets Held for Sale</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureDiscontinuedOperationsAssetsHeldForSale</Role>
      <ShortName>Discontinued Operations, Assets Held for Sale</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>995210501 - Disclosure - Fair Value Disclosures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureFairValueDisclosures</Role>
      <ShortName>Fair Value Disclosures</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995210601 - Disclosure - Property, Equipment and Leasehold Improvements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosurePropertyEquipmentAndLeaseholdImprovements</Role>
      <ShortName>Property, Equipment and Leasehold Improvements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995210701 - Disclosure - Goodwill</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureGoodwill</Role>
      <ShortName>Goodwill</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995210801 - Disclosure - Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureIntangibleAssets</Role>
      <ShortName>Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995210901 - Disclosure - Accrued Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureAccruedExpenses</Role>
      <ShortName>Accrued Expenses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995211001 - Disclosure - Capital Stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureCapitalStock</Role>
      <ShortName>Capital Stock</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995211101 - Disclosure - Warrants</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureWarrants</Role>
      <ShortName>Warrants</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995211201 - Disclosure - Equity Incentive Plan</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureEquityIncentivePlan</Role>
      <ShortName>Equity Incentive Plan</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995211301 - Disclosure - Agreements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureAgreements</Role>
      <ShortName>Agreements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995211401 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureLeases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>995211501 - Disclosure - Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureDebt</Role>
      <ShortName>Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>995211601 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureRelatedPartyTransactions</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995211701 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureCommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>995211801 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureIncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>995211901 - Disclosure - Net Loss per Common Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureNetLossPerCommonShare</Role>
      <ShortName>Net Loss per Common Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>995212001 - Disclosure - Employee Benefit Plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureEmployeeBenefitPlans</Role>
      <ShortName>Employee Benefit Plans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>995212101 - Disclosure - Segments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSegments</Role>
      <ShortName>Segments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>995212201 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>99920202 - Disclosure - Significant Accounting Policies and Recent Accounting Pronouncements (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSignificantAccountingPoliciesAndRecentAccountingPronouncementsPolicies</Role>
      <ShortName>Significant Accounting Policies and Recent Accounting Pronouncements (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureSignificantAccountingPoliciesAndRecentAccountingPronouncements</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>99930303 - Disclosure - Business Acquisitions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureBusinessAcquisitionsTables</Role>
      <ShortName>Business Acquisitions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureBusinessAcquisitions</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>99930403 - Disclosure - Discontinued Operations, Assets Held for Sale (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureDiscontinuedOperationsAssetsHeldForSaleTables</Role>
      <ShortName>Discontinued Operations, Assets Held for Sale (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureDiscontinuedOperationsAssetsHeldForSale</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>99930603 - Disclosure - Property, Equipment and Leasehold Improvements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosurePropertyEquipmentAndLeaseholdImprovementsTables</Role>
      <ShortName>Property, Equipment and Leasehold Improvements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosurePropertyEquipmentAndLeaseholdImprovements</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>99930703 - Disclosure - Goodwill (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureGoodwillTables</Role>
      <ShortName>Goodwill (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureGoodwill</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>99930803 - Disclosure - Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureIntangibleAssetsTables</Role>
      <ShortName>Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureIntangibleAssets</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>99930903 - Disclosure - Accrued Expenses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureAccruedExpensesTables</Role>
      <ShortName>Accrued Expenses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureAccruedExpenses</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>99931103 - Disclosure - Warrants (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureWarrantsTables</Role>
      <ShortName>Warrants (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureWarrants</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>99931203 - Disclosure - Equity Incentive Plan (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureEquityIncentivePlanTables</Role>
      <ShortName>Equity Incentive Plan (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureEquityIncentivePlan</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>99931403 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureLeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureLeases</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>99931503 - Disclosure - Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureDebtTables</Role>
      <ShortName>Debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureDebt</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>99931903 - Disclosure - Net Loss per Common Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureNetLossPerCommonShareTables</Role>
      <ShortName>Net Loss per Common Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureNetLossPerCommonShare</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>99932103 - Disclosure - Segments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSegmentsTables</Role>
      <ShortName>Segments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureSegments</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>99940101 - Disclosure - The Company and Basis of Presentation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureCompanyAndBasisOfPresentationDetails</Role>
      <ShortName>The Company and Basis of Presentation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureCompanyAndBasisOfPresentation</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>99940201 - Disclosure - Significant Accounting Policies and Recent Accounting Pronouncements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSignificantAccountingPoliciesAndRecentAccountingPronouncementsDetails</Role>
      <ShortName>Significant Accounting Policies and Recent Accounting Pronouncements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureSignificantAccountingPoliciesAndRecentAccountingPronouncementsPolicies</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>99940301 - Disclosure - Business Acquisitions - Consideration transferred (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureBusinessAcquisitionsConsiderationTransferredDetails</Role>
      <ShortName>Business Acquisitions - Consideration transferred (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>99940302 - Disclosure - Business Acquisitions - Purchase price allocation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureBusinessAcquisitionsPurchasePriceAllocationDetails</Role>
      <ShortName>Business Acquisitions - Purchase price allocation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>99940303 - Disclosure - Business Acquisitions - Amortization and associated estimated acquisition date fair values (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureBusinessAcquisitionsAmortizationAndAssociatedEstimatedAcquisitionDateFairValuesDetails</Role>
      <ShortName>Business Acquisitions - Amortization and associated estimated acquisition date fair values (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>99940401 - Disclosure - Discontinued Operations, Assets Held for Sale (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureDiscontinuedOperationsAssetsHeldForSaleDetails</Role>
      <ShortName>Discontinued Operations, Assets Held for Sale (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureDiscontinuedOperationsAssetsHeldForSaleTables</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>99940402 - Disclosure - Discontinued Operations, Assets Held for Sale - Additional information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureDiscontinuedOperationsAssetsHeldForSaleAdditionalInformationDetails</Role>
      <ShortName>Discontinued Operations, Assets Held for Sale - Additional information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>99940501 - Disclosure - Fair Value Disclosures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureFairValueDisclosuresDetails</Role>
      <ShortName>Fair Value Disclosures (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureFairValueDisclosures</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>99940601 - Disclosure - Property, Equipment and Leasehold Improvements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosurePropertyEquipmentAndLeaseholdImprovementsDetails</Role>
      <ShortName>Property, Equipment and Leasehold Improvements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosurePropertyEquipmentAndLeaseholdImprovementsTables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>99940701 - Disclosure - Goodwill (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureGoodwillDetails</Role>
      <ShortName>Goodwill (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureGoodwillTables</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>99940801 - Disclosure - Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureIntangibleAssetsDetails</Role>
      <ShortName>Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureIntangibleAssetsTables</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>99940802 - Disclosure - Intangible Assets - Amortization Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureIntangibleAssetsAmortizationExpenseDetails</Role>
      <ShortName>Intangible Assets - Amortization Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>99940901 - Disclosure - Accrued Expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureAccruedExpensesDetails</Role>
      <ShortName>Accrued Expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureAccruedExpensesTables</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>99941001 - Disclosure - Capital Stock (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureCapitalStockDetails</Role>
      <ShortName>Capital Stock (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureCapitalStock</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>99941101 - Disclosure - Warrants (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureWarrantsDetails</Role>
      <ShortName>Warrants (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureWarrantsTables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>99941102 - Disclosure - Warrants - Schedule of fair values of the warrants issued (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureWarrantsScheduleOfFairValuesOfWarrantsIssuedDetails</Role>
      <ShortName>Warrants - Schedule of fair values of the warrants issued (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>99941201 - Disclosure - Equity Incentive Plan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureEquityIncentivePlanDetails</Role>
      <ShortName>Equity Incentive Plan (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureEquityIncentivePlanTables</ParentRole>
      <Position>59</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>99941202 - Disclosure - Equity Incentive Plan - Stock option activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureEquityIncentivePlanStockOptionActivityDetails</Role>
      <ShortName>Equity Incentive Plan - Stock option activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>99941203 - Disclosure - Equity Incentive Plan - RSU activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureEquityIncentivePlanRsuActivityDetails</Role>
      <ShortName>Equity Incentive Plan - RSU activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>99941204 - Disclosure - Equity Incentive Plan - Total stock-based compensation expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureEquityIncentivePlanTotalStockBasedCompensationExpenseDetails</Role>
      <ShortName>Equity Incentive Plan - Total stock-based compensation expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>99941301 - Disclosure - Agreements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureAgreementsDetails</Role>
      <ShortName>Agreements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureAgreements</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>99941401 - Disclosure - Leases - Lease liability (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureLeasesLeaseLiabilityDetails</Role>
      <ShortName>Leases - Lease liability (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>99941402 - Disclosure - Leases - Weighted-average remaining lease term and weighted-average discount rate (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureLeasesWeightedAverageRemainingLeaseTermAndWeightedAverageDiscountRateDetails</Role>
      <ShortName>Leases - Weighted-average remaining lease term and weighted-average discount rate (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>99941403 - Disclosure - Leases - Future minimum lease payments under non-cancelable operating leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureLeasesFutureMinimumLeasePaymentsUnderNonCancelableOperatingLeasesDetails</Role>
      <ShortName>Leases - Future minimum lease payments under non-cancelable operating leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>99941501 - Disclosure - Debt - Deferred Consideration (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureDebtDeferredConsiderationDetails</Role>
      <ShortName>Debt - Deferred Consideration (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>99941502 - Disclosure - Debt - Notes Payable (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureDebtNotesPayableDetails</Role>
      <ShortName>Debt - Notes Payable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>99941503 - Disclosure - Debt - Revolving Line of Credit (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureDebtRevolvingLineOfCreditDetails</Role>
      <ShortName>Debt - Revolving Line of Credit (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>99941504 - Disclosure - Debt - Promissory Note with Warrants (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureDebtPromissoryNoteWithWarrantsDetails</Role>
      <ShortName>Debt - Promissory Note with Warrants (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>99941505 - Disclosure - Debt - Additional information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureDebtAdditionalInformationDetails</Role>
      <ShortName>Debt - Additional information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>99941601 - Disclosure - Related Party Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureRelatedPartyTransactionsDetails</Role>
      <ShortName>Related Party Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureRelatedPartyTransactions</ParentRole>
      <Position>72</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>99941701 - Disclosure - Commitments and Contingencies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureCommitmentsAndContingenciesDetails</Role>
      <ShortName>Commitments and Contingencies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureCommitmentsAndContingencies</ParentRole>
      <Position>73</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>99941801 - Disclosure - Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureIncomeTaxesDetails</Role>
      <ShortName>Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureIncomeTaxes</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>99941901 - Disclosure - Net Loss per Common Share - Common Stock that may potentially be issued (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureNetLossPerCommonShareCommonStockThatMayPotentiallyBeIssuedDetails</Role>
      <ShortName>Net Loss per Common Share - Common Stock that may potentially be issued (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>99942001 - Disclosure - Employee Benefit Plans (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureEmployeeBenefitPlansDetails</Role>
      <ShortName>Employee Benefit Plans (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureEmployeeBenefitPlans</ParentRole>
      <Position>76</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>99942101 - Disclosure - Segments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSegmentsDetails</Role>
      <ShortName>Segments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://Grid-ai.com/role/DisclosureSegmentsTables</ParentRole>
      <Position>77</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>99942102 - Disclosure - Segments - Reconciliation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSegmentsReconciliationDetails</Role>
      <ShortName>Segments - Reconciliation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>99942201 - Disclosure - Subsequent Events - Revolving Loan Agreement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSubsequentEventsRevolvingLoanAgreementDetails</Role>
      <ShortName>Subsequent Events - Revolving Loan Agreement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>99942202 - Disclosure - Subsequent Events - Settlement Agreement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSubsequentEventsSettlementAgreementDetails</Role>
      <ShortName>Subsequent Events - Settlement Agreement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>99942203 - Disclosure - Subsequent Events - Equity Awards (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSubsequentEventsEquityAwardsDetails</Role>
      <ShortName>Subsequent Events - Equity Awards (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="grdx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>99942204 - Disclosure - Subsequent Events - Financing Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://Grid-ai.com/role/DisclosureSubsequentEventsFinancingTransactionsDetails</Role>
      <ShortName>Subsequent Events - Financing Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>grdx-20260331.xsd</File>
    <File>grdx-20260331_cal.xml</File>
    <File>grdx-20260331_def.xml</File>
    <File>grdx-20260331_lab.xml</File>
    <File>grdx-20260331_pre.xml</File>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="grdx-20260331x10q.htm">grdx-20260331x10q.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="640">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="4">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
