<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>195</ContextCount>
  <ElementCount>299</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>55</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00000001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00000002 - Statement - Condensed Consolidated Balance Sheets (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/BalanceSheets</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00000003 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/BalanceSheetsParenthetical</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00000004 - Statement - Condensed Consolidated Statements of Operations (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/StatementsOfOperations</Role>
      <ShortName>Condensed Consolidated Statements of Operations (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00000005 - Statement - Condensed Consolidated Statements of Comprehensive Loss (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/StatementsOfComprehensiveLoss</Role>
      <ShortName>Condensed Consolidated Statements of Comprehensive Loss (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00000006 - Statement - Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/StatementOfChangesInStockholdersEquity</Role>
      <ShortName>Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>00000007 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/StatementsOfCashFlows</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.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>8</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>999008 - Disclosure - Business and organization</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/BusinessAndOrganization</Role>
      <ShortName>Business and organization</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>999009 - Disclosure - Going concern</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/GoingConcern</Role>
      <ShortName>Going concern</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>999010 - Disclosure - Summary of significant accounting policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Summary of significant accounting policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>999011 - Disclosure - Cash, cash equivalents, and marketable securities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecurities</Role>
      <ShortName>Cash, cash equivalents, and marketable securities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>999012 - Disclosure - Fair value measurement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/FairValueMeasurement</Role>
      <ShortName>Fair value measurement</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>999013 - Disclosure - Condensed consolidated balance sheet components</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponents</Role>
      <ShortName>Condensed consolidated balance sheet components</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>999014 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/Leases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>999015 - Disclosure - Notes payable</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://ebrsystemsinc.com/role/NotesPayable</Role>
      <ShortName>Notes payable</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>999016 - Disclosure - Convertible preferred stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/ConvertiblePreferredStock</Role>
      <ShortName>Convertible preferred stock</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>999017 - Disclosure - Common stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CommonStock</Role>
      <ShortName>Common stock</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>999018 - Disclosure - Stock-based compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/Stock-basedCompensation</Role>
      <ShortName>Stock-based compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>999019 - Disclosure - Warrants</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/Warrants</Role>
      <ShortName>Warrants</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>999020 - Disclosure - Income taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/IncomeTaxes</Role>
      <ShortName>Income taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>999021 - Disclosure - Net loss per share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/NetLossPerShare</Role>
      <ShortName>Net loss per share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>999022 - Disclosure - Segment information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SegmentInformation</Role>
      <ShortName>Segment information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>999023 - Disclosure - Commitments and contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CommitmentsAndContingencies</Role>
      <ShortName>Commitments and contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>999024 - Disclosure - Subsequent events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SubsequentEvents</Role>
      <ShortName>Subsequent events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>999026 - Disclosure - Summary of significant accounting policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Summary of significant accounting policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>999027 - Disclosure - Summary of significant accounting policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SummaryOfSignificantAccountingPoliciesTables</Role>
      <ShortName>Summary of significant accounting policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/SummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>999028 - Disclosure - Cash, cash equivalents, and marketable securities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecuritiesTables</Role>
      <ShortName>Cash, cash equivalents, and marketable securities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecurities</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>999029 - Disclosure - Fair value measurement (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/FairValueMeasurementTables</Role>
      <ShortName>Fair value measurement (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/FairValueMeasurement</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>999030 - Disclosure - Condensed consolidated balance sheet components (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsTables</Role>
      <ShortName>Condensed consolidated balance sheet components (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponents</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>999031 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/LeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/Leases</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>999032 - Disclosure - Notes payable (Tables)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://ebrsystemsinc.com/role/NotesPayableTables</Role>
      <ShortName>Notes payable (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/NotesPayable</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>999033 - Disclosure - Common stock (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CommonStockTables</Role>
      <ShortName>Common stock (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/CommonStock</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>999034 - Disclosure - Stock-based compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/Stock-basedCompensationTables</Role>
      <ShortName>Stock-based compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/Stock-basedCompensation</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>999035 - Disclosure - Warrants (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/WarrantsTables</Role>
      <ShortName>Warrants (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/Warrants</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>999036 - Disclosure - Net loss per share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/NetLossPerShareTables</Role>
      <ShortName>Net loss per share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/NetLossPerShare</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>999037 - Disclosure - Segment information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SegmentInformationTables</Role>
      <ShortName>Segment information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/SegmentInformation</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>999038 - Disclosure - Business and organization (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/BusinessAndOrganizationDetailsNarrative</Role>
      <ShortName>Business and organization (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/BusinessAndOrganization</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>999039 - Disclosure - Going concern (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/GoingConcernDetailsNarrative</Role>
      <ShortName>Going concern (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/GoingConcern</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>999040 - Disclosure - Summary of significant accounting policies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SummaryOfSignificantAccountingPoliciesDetails</Role>
      <ShortName>Summary of significant accounting policies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/SummaryOfSignificantAccountingPoliciesTables</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>999041 - Disclosure - Summary of significant accounting policies (Details 1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SummaryOfSignificantAccountingPoliciesDetails1</Role>
      <ShortName>Summary of significant accounting policies (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/SummaryOfSignificantAccountingPoliciesTables</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>999042 - Disclosure - Summary of significant accounting policies (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SummaryOfSignificantAccountingPoliciesDetails2</Role>
      <ShortName>Summary of significant accounting policies (Details 2)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/SummaryOfSignificantAccountingPoliciesTables</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>999043 - Disclosure - Cash, cash equivalents, and marketable securities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecuritiesDetails</Role>
      <ShortName>Cash, cash equivalents, and marketable securities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecuritiesTables</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>999044 - Disclosure - Cash, cash equivalents, and marketable securities (Details 1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecuritiesDetails1</Role>
      <ShortName>Cash, cash equivalents, and marketable securities (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecuritiesTables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>999045 - Disclosure - Cash, cash equivalents, and marketable securities (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecuritiesDetails2</Role>
      <ShortName>Cash, cash equivalents, and marketable securities (Details 2)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecuritiesTables</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>999046 - Disclosure - Cash, cash equivalents, and marketable securities (Details 3)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecuritiesDetails3</Role>
      <ShortName>Cash, cash equivalents, and marketable securities (Details 3)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecuritiesTables</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>999047 - Disclosure - Cash, cash equivalents, and marketable securities (Details 4)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecuritiesDetails4</Role>
      <ShortName>Cash, cash equivalents, and marketable securities (Details 4)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/CashCashEquivalentsAndMarketableSecuritiesTables</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>999048 - Disclosure - Fair value measurement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/FairValueMeasurementDetails</Role>
      <ShortName>Fair value measurement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/FairValueMeasurementTables</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>999049 - Disclosure - Condensed consolidated balance sheet components (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsDetails</Role>
      <ShortName>Condensed consolidated balance sheet components (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsTables</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>999050 - Disclosure - Condensed consolidated balance sheet components (Details 1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsDetails1</Role>
      <ShortName>Condensed consolidated balance sheet components (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsTables</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>999051 - Disclosure - Condensed consolidated balance sheet components (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsDetails2</Role>
      <ShortName>Condensed consolidated balance sheet components (Details 2)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsTables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>999052 - Disclosure - Condensed consolidated balance sheet components (Details 3)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsDetails3</Role>
      <ShortName>Condensed consolidated balance sheet components (Details 3)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsTables</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>999053 - Disclosure - Condensed consolidated balance sheet components (Details 4)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsDetails4</Role>
      <ShortName>Condensed consolidated balance sheet components (Details 4)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsTables</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>999054 - Disclosure - Condensed consolidated balance sheet components (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsDetailsNarrative</Role>
      <ShortName>Condensed consolidated balance sheet components (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/ConsolidatedBalanceSheetComponentsTables</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>999055 - Disclosure - Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/LeasesDetails</Role>
      <ShortName>Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/LeasesTables</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>999056 - Disclosure - Leases (Details 1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/LeasesDetails1</Role>
      <ShortName>Leases (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/LeasesTables</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>999057 - Disclosure - Leases (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/LeasesDetails2</Role>
      <ShortName>Leases (Details 2)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/LeasesTables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>999058 - Disclosure - Leases (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/LeasesDetailsNarrative</Role>
      <ShortName>Leases (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/LeasesTables</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>999059 - Disclosure - Notes payable (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://ebrsystemsinc.com/role/NotesPayableDetails</Role>
      <ShortName>Notes payable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/NotesPayableTables</ParentRole>
      <Position>59</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>999060 - Disclosure - Notes payable (Details 1)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://ebrsystemsinc.com/role/NotesPayableDetails1</Role>
      <ShortName>Notes payable (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/NotesPayableTables</ParentRole>
      <Position>60</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>999061 - Disclosure - Notes payable (Details Narrative)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://ebrsystemsinc.com/role/NotesPayableDetailsNarrative</Role>
      <ShortName>Notes payable (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/NotesPayableTables</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>999062 - Disclosure - Convertible preferred stock (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/ConvertiblePreferredStockDetailsNarrative</Role>
      <ShortName>Convertible preferred stock (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/ConvertiblePreferredStock</ParentRole>
      <Position>62</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>999063 - Disclosure - Common stock (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CommonStockDetails</Role>
      <ShortName>Common stock (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/CommonStockTables</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>999064 - Disclosure - Common stock (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CommonStockDetailsNarrative</Role>
      <ShortName>Common stock (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/CommonStockTables</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>999065 - Disclosure - Stock-based compensation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/Stock-basedCompensationDetails</Role>
      <ShortName>Stock-based compensation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/Stock-basedCompensationTables</ParentRole>
      <Position>65</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>999066 - Disclosure - Stock-based compensation (Details 1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/Stock-basedCompensationDetails1</Role>
      <ShortName>Stock-based compensation (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/Stock-basedCompensationTables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>999067 - Disclosure - Stock-based compensation (Details 2)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/Stock-basedCompensationDetails2</Role>
      <ShortName>Stock-based compensation (Details 2)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/Stock-basedCompensationTables</ParentRole>
      <Position>67</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>999068 - Disclosure - Stock-based compensation (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/Stock-basedCompensationDetailsNarrative</Role>
      <ShortName>Stock-based compensation (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/Stock-basedCompensationTables</ParentRole>
      <Position>68</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>999069 - Disclosure - Warrants (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/WarrantsDetails</Role>
      <ShortName>Warrants (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/WarrantsTables</ParentRole>
      <Position>69</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>999070 - Disclosure - Warrants (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/WarrantsDetailsNarrative</Role>
      <ShortName>Warrants (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/WarrantsTables</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>999071 - Disclosure - Income taxes (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/IncomeTaxesDetailsNarrative</Role>
      <ShortName>Income taxes (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/IncomeTaxes</ParentRole>
      <Position>71</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>999072 - Disclosure - Net loss per share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/NetLossPerShareDetails</Role>
      <ShortName>Net loss per share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/NetLossPerShareTables</ParentRole>
      <Position>72</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>999073 - Disclosure - Net loss per share (Details 1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/NetLossPerShareDetails1</Role>
      <ShortName>Net loss per share (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/NetLossPerShareTables</ParentRole>
      <Position>73</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>999074 - Disclosure - Segment information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SegmentInformationDetails</Role>
      <ShortName>Segment information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/SegmentInformationTables</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>999075 - Disclosure - Segment information (Details 1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SegmentInformationDetails1</Role>
      <ShortName>Segment information (Details 1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/SegmentInformationTables</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>999076 - Disclosure - Commitments and contingencies (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/CommitmentsAndContingenciesDetailsNarrative</Role>
      <ShortName>Commitments and contingencies (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/CommitmentsAndContingencies</ParentRole>
      <Position>76</Position>
    </Report>
    <Report instance="b5726310q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>999077 - Disclosure - Subsequent events (Details Narrative)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://ebrsystemsinc.com/role/SubsequentEventsDetailsNarrative</Role>
      <ShortName>Subsequent events (Details Narrative)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://ebrsystemsinc.com/role/SubsequentEvents</ParentRole>
      <Position>77</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" isDefinitelyFs="true" isUsgaap="true" original="b5726310q.htm">b5726310q.htm</File>
    <File>cik0001347123-20260331.xsd</File>
    <File>cik0001347123-20260331_cal.xml</File>
    <File>cik0001347123-20260331_def.xml</File>
    <File>cik0001347123-20260331_lab.xml</File>
    <File>cik0001347123-20260331_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="690">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>
