<?xml version='1.0' encoding='UTF-8'?>
<FilingSummary>
  <Version>3.3.0.814</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>144</ContextCount>
  <ElementCount>235</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>30</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>7</UnitCount>
  <MyReports>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000100 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>010000 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/CondensedConsolidatedBalanceSheetsUnaudited</Role>
      <ShortName>CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>010100 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/CondensedConsolidatedBalanceSheetsUnauditedParenthetical</Role>
      <ShortName>CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>020000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/CondensedConsolidatedStatementsOfOperationsUnaudited</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>030000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>060100 - Disclosure - DESCRIPTION OF BUSINESS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/DescriptionOfBusiness</Role>
      <ShortName>DESCRIPTION OF BUSINESS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>060200 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/BasisOfPresentationAndSignificantAccountingPolicies</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>060300 - Disclosure - SEGMENT INFORMATION AND GEOGRAPHIC DATA</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/SegmentInformationAndGeographicData</Role>
      <ShortName>SEGMENT INFORMATION AND GEOGRAPHIC DATA</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>060400 - Disclosure - FAIR VALUE MEASUREMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/FairValueMeasurements</Role>
      <ShortName>FAIR VALUE MEASUREMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>060500 - Disclosure - INVENTORIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/Inventories</Role>
      <ShortName>INVENTORIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>060600 - Disclosure - INCOME TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/IncomeTaxes</Role>
      <ShortName>INCOME TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>060700 - Disclosure - COMMITMENTS AND CONTINGENCIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/CommitmentsAndContingencies</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>060800 - Disclosure - LINE OF CREDIT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/LineOfCredit</Role>
      <ShortName>LINE OF CREDIT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>060900 - Disclosure - STOCK-BASED COMPENSATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/StockbasedCompensation</Role>
      <ShortName>STOCK-BASED COMPENSATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>061000 - Disclosure - NET LOSS PER COMMON SHARE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/NetLossPerCommonShare</Role>
      <ShortName>NET LOSS PER COMMON SHARE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>061100 - Disclosure - MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/MajorCustomersAndConcentrationOfCreditRisk</Role>
      <ShortName>MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>070200 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/BasisOfPresentationAndSignificantAccountingPoliciesPolicies</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>080300 - Disclosure - SEGMENT INFORMATION AND GEOGRAPHIC DATA (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/SegmentInformationAndGeographicDataTables</Role>
      <ShortName>SEGMENT INFORMATION AND GEOGRAPHIC DATA (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/SegmentInformationAndGeographicData</ParentRole>
      <Position>18</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>080500 - Disclosure - INVENTORIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/InventoriesTables</Role>
      <ShortName>INVENTORIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/Inventories</ParentRole>
      <Position>19</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>080700 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/CommitmentsAndContingenciesTables</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/CommitmentsAndContingencies</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>080900 - Disclosure - STOCK-BASED COMPENSATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/StockbasedCompensationTables</Role>
      <ShortName>STOCK-BASED COMPENSATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/StockbasedCompensation</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>081000 - Disclosure - NET LOSS PER COMMON SHARE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/NetLossPerCommonShareTables</Role>
      <ShortName>NET LOSS PER COMMON SHARE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/NetLossPerCommonShare</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>081100 - Disclosure - MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/MajorCustomersAndConcentrationOfCreditRiskTables</Role>
      <ShortName>MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/MajorCustomersAndConcentrationOfCreditRisk</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>090300 - Disclosure - SEGMENT INFORMATION AND GEOGRAPHIC DATA (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/SegmentInformationAndGeographicDataDetails</Role>
      <ShortName>SEGMENT INFORMATION AND GEOGRAPHIC DATA (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/SegmentInformationAndGeographicDataTables</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>090302 - Disclosure - SEGMENT INFORMATION AND GEOGRAPHIC DATA, Data by Geographic Area (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/SegmentInformationAndGeographicDataDataByGeographicAreaDetails</Role>
      <ShortName>SEGMENT INFORMATION AND GEOGRAPHIC DATA, Data by Geographic Area (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>090500 - Disclosure - INVENTORIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/InventoriesDetails</Role>
      <ShortName>INVENTORIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/InventoriesTables</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>090600 - Disclosure - INCOME TAXES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/IncomeTaxesDetails</Role>
      <ShortName>INCOME TAXES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/IncomeTaxes</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>090700 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/CommitmentsAndContingenciesDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/CommitmentsAndContingenciesTables</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>090800 - Disclosure - LINE OF CREDIT (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/LineOfCreditDetails</Role>
      <ShortName>LINE OF CREDIT (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/LineOfCredit</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>090900 - Disclosure - STOCK-BASED COMPENSATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/StockbasedCompensationDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/StockbasedCompensationTables</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>091000 - Disclosure - NET LOSS PER COMMON SHARE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/NetLossPerCommonShareDetails</Role>
      <ShortName>NET LOSS PER COMMON SHARE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/NetLossPerCommonShareTables</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="cthr-20150930.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>091100 - Disclosure - MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://charlesandcolvard.com/role/MajorCustomersAndConcentrationOfCreditRiskDetails</Role>
      <ShortName>MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://charlesandcolvard.com/role/MajorCustomersAndConcentrationOfCreditRiskTables</ParentRole>
      <Position>32</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Info">In ''CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited)'', column(s) 3, 4 are contained in other reports, so were removed by flow through suppression.</Log>
    <Log type="Info">In ''CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited)'', column(s) 1, 2 are contained in other reports, so were removed by flow through suppression.</Log>
  </Logs>
  <InputFiles>
    <File>cthr-20150930.xml</File>
    <File>cthr-20150930_cal.xml</File>
    <File>cthr-20150930_def.xml</File>
    <File>cthr-20150930_lab.xml</File>
    <File>cthr-20150930_pre.xml</File>
    <File>cthr-20150930.xsd</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies/>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>

