<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.20.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>198</ContextCount>
  <ElementCount>412</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>53</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>8</UnitCount>
  <MyReports>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>100000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>100010 - Statement - Consolidated and Combined Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/StatementConsolidatedAndCombinedBalanceSheets</Role>
      <ShortName>Consolidated and Combined Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>100020 - Statement - Consolidated and Combined Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/StatementConsolidatedAndCombinedBalanceSheetsParenthetical</Role>
      <ShortName>Consolidated and Combined Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>100030 - Statement - Consolidated and Combined Statements of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/StatementConsolidatedAndCombinedStatementsOfOperations</Role>
      <ShortName>Consolidated and Combined Statements of Operations</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>100040 - Statement - Consolidated and Combined Statements of Comprehensive Income (Loss)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/StatementConsolidatedAndCombinedStatementsOfComprehensiveIncomeLoss</Role>
      <ShortName>Consolidated and Combined Statements of Comprehensive Income (Loss)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>100050 - Statement - Consolidated and Combined Statements of Comprehensive Income (Loss) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/StatementConsolidatedAndCombinedStatementsOfComprehensiveIncomeLossParenthetical</Role>
      <ShortName>Consolidated and Combined Statements of Comprehensive Income (Loss) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>100060 - Statement - Consolidated and Combined Statements of Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/StatementConsolidatedAndCombinedStatementsOfStockholdersEquity</Role>
      <ShortName>Consolidated and Combined Statements of Stockholders' Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>100070 - Statement - Consolidated and Combined Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/StatementConsolidatedAndCombinedStatementsOfCashFlows</Role>
      <ShortName>Consolidated and Combined Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>100080 - Disclosure - Organization</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureOrganization</Role>
      <ShortName>Organization</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>100090 - Disclosure - Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureBasisOfPresentation</Role>
      <ShortName>Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>100100 - Disclosure - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>100110 - Disclosure - Recent Accounting Pronouncements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureRecentAccountingPronouncements</Role>
      <ShortName>Recent Accounting Pronouncements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>100120 - Disclosure - Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureInvestments</Role>
      <ShortName>Investments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>100130 - Disclosure - Deferred Acquisition Costs</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureDeferredAcquisitionCosts</Role>
      <ShortName>Deferred Acquisition Costs</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>100140 - Disclosure - Reinsurance</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureReinsurance</Role>
      <ShortName>Reinsurance</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>100150 - Disclosure - Losses and Loss Adjustment Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureLossesAndLossAdjustmentExpenses</Role>
      <ShortName>Losses and Loss Adjustment Expenses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>100160 - Disclosure - Note Payable</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureNotePayable</Role>
      <ShortName>Note Payable</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>100170 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureIncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>100180 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureRelatedPartyTransactions</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>100190 - Disclosure - Common Stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureCommonStock</Role>
      <ShortName>Common Stock</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>100200 - Disclosure - Earnings Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureEarningsPerShare</Role>
      <ShortName>Earnings Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>100210 - Disclosure - Assessments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureAssessments</Role>
      <ShortName>Assessments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>100220 - Disclosure - Statutory Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureStatutoryInformation</Role>
      <ShortName>Statutory Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>100230 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureSubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>100240 - Disclosure - Schedule I ??? Registrant Only Financial Statements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureScheduleIRegistrantOnlyFinancialStatements</Role>
      <ShortName>Schedule I ??? Registrant Only Financial Statements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>100250 - Disclosure - Schedule V - Supplemental Information Concerning Property and Casualty Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureScheduleVSupplementalInformationConcerningPropertyAndCasualtyOperations</Role>
      <ShortName>Schedule V - Supplemental Information Concerning Property and Casualty Operations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>100260 - Disclosure - Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://positivephysicians.com/20191231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>100270 - Disclosure - Investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureInvestmentsTables</Role>
      <ShortName>Investments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://positivephysicians.com/20191231/taxonomy/role/DisclosureInvestments</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>100280 - Disclosure - Deferred Acquisition Costs (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureDeferredAcquisitionCostsTables</Role>
      <ShortName>Deferred Acquisition Costs (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://positivephysicians.com/20191231/taxonomy/role/DisclosureDeferredAcquisitionCosts</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>100290 - Disclosure - Reinsurance (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureReinsuranceTables</Role>
      <ShortName>Reinsurance (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://positivephysicians.com/20191231/taxonomy/role/DisclosureReinsurance</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>100300 - Disclosure - Losses and Loss Adjustment Expenses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureLossesAndLossAdjustmentExpensesTables</Role>
      <ShortName>Losses and Loss Adjustment Expenses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://positivephysicians.com/20191231/taxonomy/role/DisclosureLossesAndLossAdjustmentExpenses</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>100310 - Disclosure - Income Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureIncomeTaxesTables</Role>
      <ShortName>Income Taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://positivephysicians.com/20191231/taxonomy/role/DisclosureIncomeTaxes</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>100320 - Disclosure - Related Party Transactions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureRelatedPartyTransactionsTables</Role>
      <ShortName>Related Party Transactions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://positivephysicians.com/20191231/taxonomy/role/DisclosureRelatedPartyTransactions</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>100330 - Disclosure - Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureEarningsPerShareTables</Role>
      <ShortName>Earnings Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://positivephysicians.com/20191231/taxonomy/role/DisclosureEarningsPerShare</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>100340 - Disclosure - Statutory Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureStatutoryInformationTables</Role>
      <ShortName>Statutory Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://positivephysicians.com/20191231/taxonomy/role/DisclosureStatutoryInformation</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>100350 - Disclosure - Subsequent Events (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureSubsequentEventsTables</Role>
      <ShortName>Subsequent Events (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://positivephysicians.com/20191231/taxonomy/role/DisclosureSubsequentEvents</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>100360 - Disclosure - Organization - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureOrganizationAdditionalInformationDetails</Role>
      <ShortName>Organization - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>100370 - Disclosure - Basis of Presentation - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureBasisOfPresentationAdditionalInformationDetails</Role>
      <ShortName>Basis of Presentation - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>100380 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails</Role>
      <ShortName>Summary of Significant Accounting Policies - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>100390 - Disclosure - Recent Accounting Pronouncements - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureRecentAccountingPronouncementsAdditionalInformationDetails</Role>
      <ShortName>Recent Accounting Pronouncements - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>100400 - Disclosure - Investments - Schedule of Major Security Type (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureInvestmentsScheduleOfMajorSecurityTypeDetails</Role>
      <ShortName>Investments - Schedule of Major Security Type (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>100410 - Disclosure - Investments - Schedule of Contractual Maturity Profile of Investments in Fixed Maturity Securities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureInvestmentsScheduleOfContractualMaturityProfileOfInvestmentsInFixedMaturitySecuritiesDetails</Role>
      <ShortName>Investments - Schedule of Contractual Maturity Profile of Investments in Fixed Maturity Securities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>100420 - Disclosure - Investments - Schedule of Realized Gains and Losses Securities and Other Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureInvestmentsScheduleOfRealizedGainsAndLossesSecuritiesAndOtherInvestmentsDetails</Role>
      <ShortName>Investments - Schedule of Realized Gains and Losses Securities and Other Investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>100430 - Disclosure - Investments - Schedule of Realized Investment Gains (Losses) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureInvestmentsScheduleOfRealizedInvestmentGainsLossesDetails</Role>
      <ShortName>Investments - Schedule of Realized Investment Gains (Losses) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>100450 - Disclosure - Investments - Schedule of Net Investment Income (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureInvestmentsScheduleOfNetInvestmentIncomeDetails</Role>
      <ShortName>Investments - Schedule of Net Investment Income (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>100460 - Disclosure - Investments - Schedule of Fair Value and Gross Unrealized Losses of Fixed Maturity Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureInvestmentsScheduleOfFairValueAndGrossUnrealizedLossesOfFixedMaturityInvestmentsDetails</Role>
      <ShortName>Investments - Schedule of Fair Value and Gross Unrealized Losses of Fixed Maturity Investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>100470 - Disclosure - Investments - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureInvestmentsAdditionalInformationDetails</Role>
      <ShortName>Investments - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>100480 - Disclosure - Investments - Assets Measured at Fair Value on a Recurring Basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureInvestmentsAssetsMeasuredAtFairValueOnRecurringBasisDetails</Role>
      <ShortName>Investments - Assets Measured at Fair Value on a Recurring Basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>100490 - Disclosure - Deferred Acquisition Costs - Summary of Movements in Deferred Acquisition Costs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureDeferredAcquisitionCostsSummaryOfMovementsInDeferredAcquisitionCostsDetails</Role>
      <ShortName>Deferred Acquisition Costs - Summary of Movements in Deferred Acquisition Costs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>100500 - Disclosure - Reinsurance - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureReinsuranceAdditionalInformationDetails</Role>
      <ShortName>Reinsurance - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>100510 - Disclosure - Reinsurance - Schedule of Reinsurance Recoverable Balances Due From Unaffiliated Reinsurer (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureReinsuranceScheduleOfReinsuranceRecoverableBalancesDueFromUnaffiliatedReinsurerDetails</Role>
      <ShortName>Reinsurance - Schedule of Reinsurance Recoverable Balances Due From Unaffiliated Reinsurer (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>100520 - Disclosure - Reinsurance - Effect of Reinsurance on Premiums Written, Amounts Earned, and Losses Incurred (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureReinsuranceEffectOfReinsuranceOnPremiumsWrittenAmountsEarnedAndLossesIncurredDetails</Role>
      <ShortName>Reinsurance - Effect of Reinsurance on Premiums Written, Amounts Earned, and Losses Incurred (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>100530 - Disclosure - Losses and Loss Adjustment Expenses - Reconciliation of Beginning and Ending Unpaid Losses and Loss Adjustment Expense Reserve Balances (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureLossesAndLossAdjustmentExpensesReconciliationOfBeginningAndEndingUnpaidLossesAndLossAdjustmentExpenseReserveBalancesDetails</Role>
      <ShortName>Losses and Loss Adjustment Expenses - Reconciliation of Beginning and Ending Unpaid Losses and Loss Adjustment Expense Reserve Balances (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>100540 - Disclosure - Losses and Loss Adjustment Expenses - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureLossesAndLossAdjustmentExpensesAdditionalInformationDetails</Role>
      <ShortName>Losses and Loss Adjustment Expenses - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>100550 - Disclosure - Losses and Loss Adjustment Expenses - Schedule of Incurred and Paid Loss Development Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureLossesAndLossAdjustmentExpensesScheduleOfIncurredAndPaidLossDevelopmentInformationDetails</Role>
      <ShortName>Losses and Loss Adjustment Expenses - Schedule of Incurred and Paid Loss Development Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>100560 - Disclosure - Losses and Loss Adjustment Expenses - Schedule of Reconciliation for Net Incurred and Paid Loss Development Tables to Liability for Losses and LAE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureLossesAndLossAdjustmentExpensesScheduleOfReconciliationForNetIncurredAndPaidLossDevelopmentTablesToLiabilityForLossesAndLAEDetails</Role>
      <ShortName>Losses and Loss Adjustment Expenses - Schedule of Reconciliation for Net Incurred and Paid Loss Development Tables to Liability for Losses and LAE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>100570 - Disclosure - Losses and Loss Adjustment Expenses - Supplemental Information About Average Historical Claims Duration (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureLossesAndLossAdjustmentExpensesSupplementalInformationAboutAverageHistoricalClaimsDurationDetails</Role>
      <ShortName>Losses and Loss Adjustment Expenses - Supplemental Information About Average Historical Claims Duration (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>100580 - Disclosure - Note Payable - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureNotePayableAdditionalInformationDetails</Role>
      <ShortName>Note Payable - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>100590 - Disclosure - Income Taxes - Schedule of Components of Income Tax Provision (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureIncomeTaxesScheduleOfComponentsOfIncomeTaxProvisionDetails</Role>
      <ShortName>Income Taxes - Schedule of Components of Income Tax Provision (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>100600 - Disclosure - Income Taxes - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureIncomeTaxesAdditionalInformationDetails</Role>
      <ShortName>Income Taxes - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>100610 - Disclosure - Income Taxes - Schedule of Income Tax Provision Differs from Computed by Applying Federal Statutory Rate to Loss Before Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureIncomeTaxesScheduleOfIncomeTaxProvisionDiffersFromComputedByApplyingFederalStatutoryRateToLossBeforeIncomeTaxesDetails</Role>
      <ShortName>Income Taxes - Schedule of Income Tax Provision Differs from Computed by Applying Federal Statutory Rate to Loss Before Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>100620 - Disclosure - Income Taxes - Schedule of Deferred Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureIncomeTaxesScheduleOfDeferredIncomeTaxesDetails</Role>
      <ShortName>Income Taxes - Schedule of Deferred Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>100630 - Disclosure - Related Party Transactions - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureRelatedPartyTransactionsAdditionalInformationDetails</Role>
      <ShortName>Related Party Transactions - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>100640 - Disclosure - Related Party Transactions - Summary of Management Expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureRelatedPartyTransactionsSummaryOfManagementExpensesDetails</Role>
      <ShortName>Related Party Transactions - Summary of Management Expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>100650 - Disclosure - Related Party Transactions - Schedule of Fees Incurred under the Contract (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureRelatedPartyTransactionsScheduleOfFeesIncurredUnderContractDetails</Role>
      <ShortName>Related Party Transactions - Schedule of Fees Incurred under the Contract (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>100660 - Disclosure - Related Party Transactions - Schedule of Commission Expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureRelatedPartyTransactionsScheduleOfCommissionExpensesDetails</Role>
      <ShortName>Related Party Transactions - Schedule of Commission Expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>100670 - Disclosure - Common Stock - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureCommonStockAdditionalInformationDetails</Role>
      <ShortName>Common Stock - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>100680 - Disclosure - Earnings Per Share - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureEarningsPerShareAdditionalInformationDetails</Role>
      <ShortName>Earnings Per Share - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>100690 - Disclosure - Earnings per Share - Schedule of Reconciliation of the Numerators and Denominators we used in the Basic and Diluted Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureEarningsPerShareScheduleOfReconciliationOfNumeratorsAndDenominatorsWeUsedInBasicAndDilutedPerShareDetails</Role>
      <ShortName>Earnings per Share - Schedule of Reconciliation of the Numerators and Denominators we used in the Basic and Diluted Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>100700 - Disclosure - Assessments - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureAssessmentsAdditionalInformationDetails</Role>
      <ShortName>Assessments - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>100710 - Disclosure - Statutory Information - Schedule of Statutory Net Income (Loss) and Surplus and Other Funds (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureStatutoryInformationScheduleOfStatutoryNetIncomeLossAndSurplusAndOtherFundsDetails</Role>
      <ShortName>Statutory Information - Schedule of Statutory Net Income (Loss) and Surplus and Other Funds (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>100720 - Disclosure - Statutory Information - Reconciliation of Statutory Surplus and Other Funds (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureStatutoryInformationReconciliationOfStatutorySurplusAndOtherFundsDetails</Role>
      <ShortName>Statutory Information - Reconciliation of Statutory Surplus and Other Funds (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>100730 - Disclosure - Subsequent Events - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureSubsequentEventsAdditionalInformationDetails</Role>
      <ShortName>Subsequent Events - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>100740 - Disclosure - Subsequent Events - Schedule of Changes in Investment Portfolio (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureSubsequentEventsScheduleOfChangesInInvestmentPortfolioDetails</Role>
      <ShortName>Subsequent Events - Schedule of Changes in Investment Portfolio (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>100750 - Disclosure - Schedule I - Registrant Only Financial Statements (Balance Sheets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureScheduleIRegistrantOnlyFinancialStatementsBalanceSheetsDetails</Role>
      <ShortName>Schedule I - Registrant Only Financial Statements (Balance Sheets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>100760 - Disclosure - Schedule I - Registrant Only Financial Statements (Balance Sheets) (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureScheduleIRegistrantOnlyFinancialStatementsBalanceSheetsParentheticalDetails</Role>
      <ShortName>Schedule I - Registrant Only Financial Statements (Balance Sheets) (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>100770 - Disclosure - Schedule I - Registrant Only Financial Statements (Statements of Operations) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureScheduleIRegistrantOnlyFinancialStatementsStatementsOfOperationsDetails</Role>
      <ShortName>Schedule I - Registrant Only Financial Statements (Statements of Operations) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>100780 - Disclosure - Schedule I - Registrant Only Financial Statements (Statements of Cash Flows) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureScheduleIRegistrantOnlyFinancialStatementsStatementsOfCashFlowsDetails</Role>
      <ShortName>Schedule I - Registrant Only Financial Statements (Statements of Cash Flows) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="pphi-20191231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>100790 - Disclosure - Schedule V - Supplemental Information Concerning Property and Casualty Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://positivephysicians.com/20191231/taxonomy/role/DisclosureScheduleVSupplementalInformationConcerningPropertyAndCasualtyOperationsDetails</Role>
      <ShortName>Schedule V - Supplemental Information Concerning Property and Casualty Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://positivephysicians.com/20191231/taxonomy/role/DisclosureScheduleVSupplementalInformationConcerningPropertyAndCasualtyOperations</ParentRole>
      <Position>79</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>pphi-20191231.xml</File>
    <File>pphi-20191231.xsd</File>
    <File>pphi-20191231_cal.xml</File>
    <File>pphi-20191231_def.xml</File>
    <File>pphi-20191231_lab.xml</File>
    <File>pphi-20191231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://fasb.org/srt/2019-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/us-gaap/2019-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2019-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/stpr/2018-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
