<?xml version='1.0' encoding='UTF-8'?>
<FilingSummary>
  <Version>3.10.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>424</ContextCount>
  <ElementCount>232</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>66</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000 - Document - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-document-and-entity-information</Role>
      <ShortName>Document And Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>001 - Statement - Consolidated Balance Sheets (Current Period Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-consolidated-balance-sheets-current-period-unaudited</Role>
      <ShortName>Consolidated Balance Sheets (Current Period Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>002 - Statement - Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-consolidated-balance-sheets-current-period-unaudited-parentheticals</Role>
      <ShortName>Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>003 - Statement - Consolidated Statements of Operations (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-consolidated-statements-of-operations-unaudited</Role>
      <ShortName>Consolidated Statements of Operations (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>004 - Statement - Consolidated Statements of Comprehensive Income (Loss) (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-consolidated-statements-of-comprehensive-income-loss-unaudited</Role>
      <ShortName>Consolidated Statements of Comprehensive Income (Loss) (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>005 - Statement - Consolidated Statements of Changes in Stockholders' Equity (Current Period Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-consolidated-statements-of-changes-in-stockholders-equity-current-period-unaudited</Role>
      <ShortName>Consolidated Statements of Changes in Stockholders' Equity (Current Period Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>006 - Statement - Consolidated Statements of Cash Flows (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-consolidated-statements-of-cash-flows-unaudited</Role>
      <ShortName>Consolidated Statements of Cash Flows (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>007 - Disclosure - Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-1-organization-nature-of-business-and-summary-of-significant-accounting-policies</Role>
      <ShortName>Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>008 - Disclosure - Note 2 - Chapter 11 Proceeding and Emergence</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-2-chapter-11-proceeding-and-emergence</Role>
      <ShortName>Note 2 - Chapter 11 Proceeding and Emergence</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>009 - Disclosure - Note 3 - Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-3-debt</Role>
      <ShortName>Note 3 - Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>010 - Disclosure - Note 4 - Goodwill and Other Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-4-goodwill-and-other-intangible-assets</Role>
      <ShortName>Note 4 - Goodwill and Other Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>011 - Disclosure - Note 5 - Share-based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-5-sharebased-compensation</Role>
      <ShortName>Note 5 - Share-based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>012 - Disclosure - Note 6 - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-6-commitments-and-contingencies</Role>
      <ShortName>Note 6 - Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>013 - Disclosure - Note 7 - Segment Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-7-segment-information</Role>
      <ShortName>Note 7 - Segment Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>014 - Disclosure - Note 8 - Acquisitions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-8-acquisitions</Role>
      <ShortName>Note 8 - Acquisitions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>015 - Document - Note 9 - Supplemental Cash Flow Disclosures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-9-supplemental-cash-flow-disclosures-</Role>
      <ShortName>Note 9 - Supplemental Cash Flow Disclosures</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>016 - Disclosure - Note 10 - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-10-subsequent-events</Role>
      <ShortName>Note 10 - Subsequent Events</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>017 - Disclosure - Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-significant-accounting-policies-policies</Role>
      <ShortName>Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>018 - Disclosure - Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-1-organization-nature-of-business-and-summary-of-significant-accounting-policies-tables</Role>
      <ShortName>Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>019 - Disclosure - Note 2 - Chapter 11 Proceeding and Emergence (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-2-chapter-11-proceeding-and-emergence-tables</Role>
      <ShortName>Note 2 - Chapter 11 Proceeding and Emergence (Tables)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>020 - Disclosure - Note 4 - Goodwill and Other Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-4-goodwill-and-other-intangible-assets-tables</Role>
      <ShortName>Note 4 - Goodwill and Other Intangible Assets (Tables)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>021 - Disclosure - Note 5 - Share-based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-5-sharebased-compensation-tables</Role>
      <ShortName>Note 5 - Share-based Compensation (Tables)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>022 - Disclosure - Note 7 - Segment Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-7-segment-information-tables</Role>
      <ShortName>Note 7 - Segment Information (Tables)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>023 - Disclosure - Note 8 - Acquisitions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-8-acquisitions-tables</Role>
      <ShortName>Note 8 - Acquisitions (Tables)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>024 - Disclosure - Note 9 - Supplemental Cash Flow Disclosures (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-9-supplemental-cash-flow-disclosures-tables</Role>
      <ShortName>Note 9 - Supplemental Cash Flow Disclosures (Tables)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>025 - Disclosure - Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-1-organization-nature-of-business-and-summary-of-significant-accounting-policies-details-textual</Role>
      <ShortName>Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies (Details Textual)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>026 - Disclosure - Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies - Inventories (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-1-organization-nature-of-business-and-summary-of-significant-accounting-policies-inventories-details</Role>
      <ShortName>Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies - Inventories (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>027 - Disclosure - Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-1-organization-nature-of-business-and-summary-of-significant-accounting-policies-disaggregation-of-revenue-details</Role>
      <ShortName>Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>028 - Disclosure - Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies - Earnings (Loss) Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-1-organization-nature-of-business-and-summary-of-significant-accounting-policies-earnings-loss-per-share-details</Role>
      <ShortName>Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies - Earnings (Loss) Per Share (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>029 - Disclosure - Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies - Securities Excluded From Computation of Basic and Diluted Earnings Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-1-organization-nature-of-business-and-summary-of-significant-accounting-policies-securities-excluded-from-computation-of-basic-and-diluted-earnings-per-share-details</Role>
      <ShortName>Note 1 - Organization, Nature of Business and Summary of Significant Accounting Policies - Securities Excluded From Computation of Basic and Diluted Earnings Per Share (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>030 - Disclosure - Note 2 - Chapter 11 Proceeding and Emergence (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-2-chapter-11-proceeding-and-emergence-details-textual</Role>
      <ShortName>Note 2 - Chapter 11 Proceeding and Emergence (Details Textual)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>031 - Disclosure - Note 2 - Chapter 11 Proceeding and Emergence - Reorganization Items (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-2-chapter-11-proceeding-and-emergence-reorganization-items-details</Role>
      <ShortName>Note 2 - Chapter 11 Proceeding and Emergence - Reorganization Items (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>032 - Disclosure - Note 3 - Debt (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-3-debt-details-textual</Role>
      <ShortName>Note 3 - Debt (Details Textual)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>033 - Disclosure - Note 4 - Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Goodwill (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-4-goodwill-and-other-intangible-assets-changes-in-the-carrying-amount-of-goodwill-details</Role>
      <ShortName>Note 4 - Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Goodwill (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>034 - Disclosure - Note 4 - Goodwill and Other Intangible Assets - Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-4-goodwill-and-other-intangible-assets-intangible-assets-details</Role>
      <ShortName>Note 4 - Goodwill and Other Intangible Assets - Intangible Assets (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>035 - Disclosure - Note 5 - Share-based Compensation (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-5-sharebased-compensation-details-textual</Role>
      <ShortName>Note 5 - Share-based Compensation (Details Textual)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>036 - Disclosure - Note 5 - Share-based Compensation - Fair Value Assumptions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-5-sharebased-compensation-fair-value-assumptions-details</Role>
      <ShortName>Note 5 - Share-based Compensation - Fair Value Assumptions (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>037 - Disclosure - Note 6 - Commitments and Contingencies (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-6-commitments-and-contingencies-details-textual</Role>
      <ShortName>Note 6 - Commitments and Contingencies (Details Textual)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>038 - Disclosure - Note 7 - Segment Information - Segment Data (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-7-segment-information-segment-data-details</Role>
      <ShortName>Note 7 - Segment Information - Segment Data (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>039 - Disclosure - Note 7 - Segment Information - EBITDA Reconciliation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-7-segment-information-ebitda-reconciliation-details</Role>
      <ShortName>Note 7 - Segment Information - EBITDA Reconciliation (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>040 - Disclosure - Note 8 - Acquisitions (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-8-acquisitions-details-textual</Role>
      <ShortName>Note 8 - Acquisitions (Details Textual)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>041 - Disclosure - Note 8 - Acquisitions - Pro Forma Results (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-8-acquisitions-pro-forma-results-details</Role>
      <ShortName>Note 8 - Acquisitions - Pro Forma Results (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>042 - Disclosure - Note 9 - Supplemental Cash Flow Disclosures - Schedule of Supplemental Cash Flow Disclosures (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-9-supplemental-cash-flow-disclosures-schedule-of-supplemental-cash-flow-disclosures-details</Role>
      <ShortName>Note 9 - Supplemental Cash Flow Disclosures - Schedule of Supplemental Cash Flow Disclosures (Details)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="cjes-20180630.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>043 - Disclosure - Note 10 - Subsequent Events (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://cjenergy.com/20180630/role/statement-note-10-subsequent-events-details-textual</Role>
      <ShortName>Note 10 - Subsequent Events (Details Textual)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>cjes-20180630.xml</File>
    <File>cjes-20180630.xsd</File>
    <File>cjes-20180630_cal.xml</File>
    <File>cjes-20180630_def.xml</File>
    <File>cjes-20180630_lab.xml</File>
    <File>cjes-20180630_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://fasb.org/us-gaap/2018-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/srt/2018-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2018-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
