<?xml version='1.0' encoding='UTF-8'?>
<FilingSummary>
  <Version>3.8.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>109</ContextCount>
  <ElementCount>249</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>46</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>5</UnitCount>
  <MyReports>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>1001000 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/ConsolidatedBalanceSheets</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1001501 - Statement - Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/ConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1002000 - Statement - Consolidated Statements of Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/ConsolidatedStatementsOfIncome</Role>
      <ShortName>Consolidated Statements of Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1002501 - Statement - Consolidated Statements of Income (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/ConsolidatedStatementsOfIncomeParenthetical</Role>
      <ShortName>Consolidated Statements of Income (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1003000 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/ConsolidatedStatementsOfCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>1004000 - Statement - Consolidated Statements of Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/ConsolidatedStatementsOfStockholdersEquity</Role>
      <ShortName>Consolidated Statements of Stockholders' Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>2101100 - Disclosure - Organization and Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/OrganizationAndSummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Organization and Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>2102100 - Disclosure - Costs and Estimated Earnings on Uncompleted Contracts</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/CostsAndEstimatedEarningsOnUncompletedContracts</Role>
      <ShortName>Costs and Estimated Earnings on Uncompleted Contracts</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2103100 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/IncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2104100 - Disclosure - Discontinued Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/DiscontinuedOperations</Role>
      <ShortName>Discontinued Operations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2105100 - Disclosure - Property, Buildings and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/PropertyBuildingsAndEquipment</Role>
      <ShortName>Property, Buildings and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2106100 - Disclosure - 401 (k) Employee Benefits Plan</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/A401KEmployeeBenefitsPlan</Role>
      <ShortName>401 (k) Employee Benefits Plan</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2107100 - Disclosure - Notes Payable</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.goldfieldcorp.com/role/NotesPayable</Role>
      <ShortName>Notes Payable</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2108100 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/CommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2109100 - Disclosure - Income Per Share of Common Stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/IncomePerShareOfCommonStock</Role>
      <ShortName>Income Per Share of Common Stock</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2110100 - Disclosure - Common Stock Repurchase Plan</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/CommonStockRepurchasePlan</Role>
      <ShortName>Common Stock Repurchase Plan</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2111100 - Disclosure - Business Concentration and Credit Risks</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/BusinessConcentrationAndCreditRisks</Role>
      <ShortName>Business Concentration and Credit Risks</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2112100 - Disclosure - Restricted Cash</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/RestrictedCash</Role>
      <ShortName>Restricted Cash</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2114100 - Disclosure - Goodwill and Other Intangible Assets Associated with the Acquisition of C&amp;C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/GoodwillAndOtherIntangibleAssetsAssociatedWithAcquisitionOfCc</Role>
      <ShortName>Goodwill and Other Intangible Assets Associated with the Acquisition of C&amp;C</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2201201 - Disclosure - Organization and Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/OrganizationAndSummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Organization and Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/OrganizationAndSummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2302301 - Disclosure - Costs and Estimated Earnings on Uncompleted Contracts (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/CostsAndEstimatedEarningsOnUncompletedContractsTables</Role>
      <ShortName>Costs and Estimated Earnings on Uncompleted Contracts (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/CostsAndEstimatedEarningsOnUncompletedContracts</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2303301 - Disclosure - Income Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/IncomeTaxesTables</Role>
      <ShortName>Income Taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/IncomeTaxes</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2305301 - Disclosure - Property, Buildings and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/PropertyBuildingsAndEquipmentTables</Role>
      <ShortName>Property, Buildings and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/PropertyBuildingsAndEquipment</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2307301 - Disclosure - Notes Payable (Tables)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.goldfieldcorp.com/role/NotesPayableTables</Role>
      <ShortName>Notes Payable (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/NotesPayable</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2308301 - Disclosure - Commitments and Contingencies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/CommitmentsAndContingenciesTables</Role>
      <ShortName>Commitments and Contingencies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/CommitmentsAndContingencies</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2311301 - Disclosure - Business Concentration and Credit Risks (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/BusinessConcentrationAndCreditRisksTables</Role>
      <ShortName>Business Concentration and Credit Risks (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/BusinessConcentrationAndCreditRisks</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2314301 - Disclosure - Goodwill and Other Intangible Assets Associated with the Acquisition of C&amp;C (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/GoodwillAndOtherIntangibleAssetsAssociatedWithAcquisitionOfCcTables</Role>
      <ShortName>Goodwill and Other Intangible Assets Associated with the Acquisition of C&amp;C (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/GoodwillAndOtherIntangibleAssetsAssociatedWithAcquisitionOfCc</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2401402 - Disclosure - Organization and Summary of Significant Accounting Policies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/OrganizationAndSummaryOfSignificantAccountingPoliciesDetails</Role>
      <ShortName>Organization and Summary of Significant Accounting Policies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/OrganizationAndSummaryOfSignificantAccountingPoliciesPolicies</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2402402 - Disclosure - Costs and Estimated Earnings on Uncompleted Contracts (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/CostsAndEstimatedEarningsOnUncompletedContractsDetails</Role>
      <ShortName>Costs and Estimated Earnings on Uncompleted Contracts (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/CostsAndEstimatedEarningsOnUncompletedContractsTables</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2403402 - Disclosure - Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/IncomeTaxesDetails</Role>
      <ShortName>Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/IncomeTaxesTables</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2404401 - Disclosure - Discontinued Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/DiscontinuedOperationsDetails</Role>
      <ShortName>Discontinued Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/DiscontinuedOperations</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2405402 - Disclosure - Property, Buildings and Equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/PropertyBuildingsAndEquipmentDetails</Role>
      <ShortName>Property, Buildings and Equipment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/PropertyBuildingsAndEquipmentTables</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2406401 - Disclosure - 401 (k) Employee Benefits Plan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/A401KEmployeeBenefitsPlanDetails</Role>
      <ShortName>401 (k) Employee Benefits Plan (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/A401KEmployeeBenefitsPlan</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2407402 - Disclosure - Notes Payable (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.goldfieldcorp.com/role/NotesPayableDetails</Role>
      <ShortName>Notes Payable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/NotesPayableTables</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2407403 - Disclosure - Notes Payable - Textual (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.goldfieldcorp.com/role/NotesPayableTextualDetails</Role>
      <ShortName>Notes Payable - Textual (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>2407404 - Disclosure - Notes Payable - Schedule of Repayments of Notes Payable (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.goldfieldcorp.com/role/NotesPayableScheduleOfRepaymentsOfNotesPayableDetails</Role>
      <ShortName>Notes Payable - Schedule of Repayments of Notes Payable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>2408402 - Disclosure - Commitments and Contingencies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/CommitmentsAndContingenciesDetails</Role>
      <ShortName>Commitments and Contingencies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/CommitmentsAndContingenciesTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>2408403 - Disclosure - Commitments and Contingencies - Performance Bonds (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/CommitmentsAndContingenciesPerformanceBondsDetails</Role>
      <ShortName>Commitments and Contingencies - Performance Bonds (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>2408404 - Disclosure - Commitments and Contingencies - Schedule of Multi-employer Pension Plans (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/CommitmentsAndContingenciesScheduleOfMultiEmployerPensionPlansDetails</Role>
      <ShortName>Commitments and Contingencies - Schedule of Multi-employer Pension Plans (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>2408405 - Disclosure - Commitments and Contingencies - Summary of Committed Expenditures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/CommitmentsAndContingenciesSummaryOfCommittedExpendituresDetails</Role>
      <ShortName>Commitments and Contingencies - Summary of Committed Expenditures (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>2409401 - Disclosure - Income Per Share of Common Stock (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/IncomePerShareOfCommonStockDetails</Role>
      <ShortName>Income Per Share of Common Stock (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/IncomePerShareOfCommonStock</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>2410401 - Disclosure - Common Stock Repurchase Plan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/CommonStockRepurchasePlanDetails</Role>
      <ShortName>Common Stock Repurchase Plan (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/CommonStockRepurchasePlan</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>2411402 - Disclosure - Business Concentration and Credit Risks (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/BusinessConcentrationAndCreditRisksDetails</Role>
      <ShortName>Business Concentration and Credit Risks (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/BusinessConcentrationAndCreditRisksTables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="gv-20171231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>2414402 - Disclosure - Goodwill and Other Intangible Assets Associated with the Acquisition of C&amp;C (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.goldfieldcorp.com/role/GoodwillAndOtherIntangibleAssetsAssociatedWithAcquisitionOfCcDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets Associated with the Acquisition of C&amp;C (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.goldfieldcorp.com/role/GoodwillAndOtherIntangibleAssetsAssociatedWithAcquisitionOfCcTables</ParentRole>
      <Position>45</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>gv-20171231.xml</File>
    <File>gv-20171231.xsd</File>
    <File>gv-20171231_cal.xml</File>
    <File>gv-20171231_def.xml</File>
    <File>gv-20171231_lab.xml</File>
    <File>gv-20171231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://fasb.org/us-gaap/2017-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2014-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
