<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>486</ContextCount>
  <ElementCount>362</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>88</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>7</UnitCount>
  <MyReports>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>75000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>75010 - Statement - Statement of Assets and Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/StatementOfAssetsAndLiabilities</Role>
      <ShortName>Statement of Assets and Liabilities</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>75020 - Statement - Statements of Assets and Liabilities (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/StatementsOfAssetsAndLiabilitiesParenthetical</Role>
      <ShortName>Statements of Assets and Liabilities (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>75030 - Statement - Statement of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/StatementOfOperations</Role>
      <ShortName>Statement of Operations</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>75040 - Statement - Statement of Changes in Net Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/StatementOfChangesInNetAssets</Role>
      <ShortName>Statement of Changes in Net Assets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>75050 - Statement - Statement of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/StatementOfCashFlows</Role>
      <ShortName>Statement of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>75060 - Statement - Schedule of Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/ScheduleOfInvestments</Role>
      <ShortName>Schedule of Investments</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>75070 - Statement - Schedule of Investments (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/ScheduleOfInvestmentsParenthetical</Role>
      <ShortName>Schedule of Investments (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>75080 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCybersecurityRiskManagementAndStrategyDisclosure</Role>
      <ShortName>Cybersecurity Risk Management and Strategy Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>995410 - Disclosure - Pay vs Performance Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/PvpDisclosure</Role>
      <ShortName>Pay vs Performance Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995447 - Disclosure - Insider Trading Policies and Procedures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc</Role>
      <ShortName>Insider Trading Policies and Procedures</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995457 - Disclosure - Organization</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureOrganization1</Role>
      <ShortName>Organization</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995467 - Disclosure - Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSignificantAccountingPolicies</Role>
      <ShortName>Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995477 - Disclosure - Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureInvestments1</Role>
      <ShortName>Investments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995487 - Disclosure - Fair Value of Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureFairValueOfFinancialInstruments</Role>
      <ShortName>Fair Value of Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995497 - Disclosure - Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureDebt</Role>
      <ShortName>Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995507 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureRelatedPartyTransactions1</Role>
      <ShortName>Related Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995517 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995527 - Disclosure - Common Stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCommonStock1</Role>
      <ShortName>Common Stock</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>995537 - Disclosure - Indemnification</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureIndemnification</Role>
      <ShortName>Indemnification</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>995547 - Disclosure - Earnings Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureEarningsPerShare</Role>
      <ShortName>Earnings Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995557 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureIncomeTaxes1</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>995567 - Disclosure - Financial Highlights</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureFinancialHighlights</Role>
      <ShortName>Financial Highlights</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>995577 - Disclosure - Segment Reporting</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSegmentReporting</Role>
      <ShortName>Segment Reporting</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>995587 - Disclosure - Loan Portfilio Acquisition</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureLoanPortfilioAcquisition</Role>
      <ShortName>Loan Portfilio Acquisition</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>995597 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>995607 - Disclosure - Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSignificantAccountingPolicies</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>995617 - Disclosure - Investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureInvestmentsTables</Role>
      <ShortName>Investments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureInvestments1</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>995627 - Disclosure - Fair Value of Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsTables</Role>
      <ShortName>Fair Value of Financial Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureFairValueOfFinancialInstruments</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>995637 - Disclosure - Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureDebtTables</Role>
      <ShortName>Debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureDebt</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>995647 - Disclosure - Related Party Transactions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureRelatedPartyTransactionsTables</Role>
      <ShortName>Related Party Transactions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureRelatedPartyTransactions1</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>995657 - Disclosure - Commitments and Contingencies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCommitmentsAndContingenciesTables</Role>
      <ShortName>Commitments and Contingencies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCommitmentsAndContingencies</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>995667 - Disclosure - Common Stock (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCommonStockTables</Role>
      <ShortName>Common Stock (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCommonStock1</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>995677 - Disclosure - Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureEarningsPerShareTables</Role>
      <ShortName>Earnings Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureEarningsPerShare</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>995687 - Disclosure - Income Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureIncomeTaxesTables</Role>
      <ShortName>Income Taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureIncomeTaxes1</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>995697 - Disclosure - Financial Highlights (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureFinancialHighlightsTables</Role>
      <ShortName>Financial Highlights (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureFinancialHighlights</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>995707 - Disclosure - Organization - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureOrganizationAdditionalInformationDetails</Role>
      <ShortName>Organization - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>995717 - Disclosure - Significant Accounting Policies, Cash and Cash Equivalents (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSignificantAccountingPoliciesCashAndCashEquivalentsDetails</Role>
      <ShortName>Significant Accounting Policies, Cash and Cash Equivalents (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>995727 - Disclosure - Significant Accounting Policies, Revenue Recognition (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSignificantAccountingPoliciesRevenueRecognitionDetails</Role>
      <ShortName>Significant Accounting Policies, Revenue Recognition (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>995737 - Disclosure - Significant Accounting Policies, Unearned Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSignificantAccountingPoliciesUnearnedRevenueDetails</Role>
      <ShortName>Significant Accounting Policies, Unearned Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>995747 - Disclosure - Significant Accounting Policies, Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSignificantAccountingPoliciesIncomeTaxesDetails</Role>
      <ShortName>Significant Accounting Policies, Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>995757 - Disclosure - Significant Accounting Policies, Offering Costs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSignificantAccountingPoliciesOfferingCostsDetails</Role>
      <ShortName>Significant Accounting Policies, Offering Costs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>995767 - Disclosure - Significant Accounting Policies, Transaction Expenses Related to Loan Portfolio Acquisition (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSignificantAccountingPoliciesTransactionExpensesRelatedToLoanPortfolioAcquisitionDetails</Role>
      <ShortName>Significant Accounting Policies, Transaction Expenses Related to Loan Portfolio Acquisition (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>995777 - Disclosure - Significant Accounting Policies, Deferred Financing Costs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSignificantAccountingPoliciesDeferredFinancingCostsDetails</Role>
      <ShortName>Significant Accounting Policies, Deferred Financing Costs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>995787 - Disclosure - Significant Accounting Policies, New Accounting Standards - (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSignificantAccountingPoliciesNewAccountingStandardsDetails</Role>
      <ShortName>Significant Accounting Policies, New Accounting Standards - (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>995797 - Disclosure - Investments - Portfolio Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureInvestmentsPortfolioInvestmentsDetails</Role>
      <ShortName>Investments - Portfolio Investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>995807 - Disclosure - Investments - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureInvestmentsAdditionalInformationDetails</Role>
      <ShortName>Investments - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>995817 - Disclosure - Fair Value of Financial Instruments - Investments Measured at Fair Value (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsInvestmentsMeasuredAtFairValueDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Investments Measured at Fair Value (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>995827 - Disclosure - Fair Value of Financial Instruments - Significant Unobservable Inputs used in Fair Value Measurement Level 3 Portfolio Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsSignificantUnobservableInputsUsedInFairValueMeasurementLevel3PortfolioInvestmentsDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Significant Unobservable Inputs used in Fair Value Measurement Level 3 Portfolio Investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>995837 - Disclosure - Fair Value of Financial Instruments - Summary of Changes in Fair Value of Level 3 Portfolio Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsSummaryOfChangesInFairValueOfLevel3PortfolioInvestmentsDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Summary of Changes in Fair Value of Level 3 Portfolio Investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>995847 - Disclosure - Debt - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureDebtAdditionalInformationDetails</Role>
      <ShortName>Debt - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>995857 - Disclosure - Debt - Components of Interest Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureDebtComponentsOfInterestExpenseDetails</Role>
      <ShortName>Debt - Components of Interest Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>995867 - Disclosure - Debt - Schedule of Information about Senior Securities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureDebtScheduleOfInformationAboutSeniorSecuritiesDetails</Role>
      <ShortName>Debt - Schedule of Information about Senior Securities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>995877 - Disclosure - Debt - Schedule of Information about Senior Securities (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureDebtScheduleOfInformationAboutSeniorSecuritiesParentheticalDetails</Role>
      <ShortName>Debt - Schedule of Information about Senior Securities (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>995887 - Disclosure - Related Party Transactions, Investment Advisory Agreement and Expense Limitation Agreements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureRelatedPartyTransactionsInvestmentAdvisoryAgreementAndExpenseLimitationAgreementsDetails</Role>
      <ShortName>Related Party Transactions, Investment Advisory Agreement and Expense Limitation Agreements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>995897 - Disclosure - Related Party Transactions - Related Parties Fees and Expenses Incurred (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureRelatedPartyTransactionsRelatedPartiesFeesAndExpensesIncurredDetails</Role>
      <ShortName>Related Party Transactions - Related Parties Fees and Expenses Incurred (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>995907 - Disclosure - Related Party Transactions - Related Parties Fees and Expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureRelatedPartyTransactionsRelatedPartiesFeesAndExpensesDetails</Role>
      <ShortName>Related Party Transactions - Related Parties Fees and Expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>995917 - Disclosure - Related Party Transactions, Due from Affiliate and Co-Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureRelatedPartyTransactionsDueFromAffiliateAndCoinvestmentsDetails</Role>
      <ShortName>Related Party Transactions, Due from Affiliate and Co-Investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>995927 - Disclosure - Related Party Transactions, Other Related Party Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureRelatedPartyTransactionsOtherRelatedPartyTransactionsDetails</Role>
      <ShortName>Related Party Transactions, Other Related Party Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>995937 - Disclosure - Commitments and Contingencies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCommitmentsAndContingenciesDetails</Role>
      <ShortName>Commitments and Contingencies (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCommitmentsAndContingenciesTables</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>995947 - Disclosure - Common Stock - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCommonStockAdditionalInformationDetails</Role>
      <ShortName>Common Stock - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>995957 - Disclosure - Common Stock - Summary of Distributions Declared and Paid (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCommonStockSummaryOfDistributionsDeclaredAndPaidDetails</Role>
      <ShortName>Common Stock - Summary of Distributions Declared and Paid (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>995967 - Disclosure - Common Stock - Schedule of Dividend Reinvestment Plan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureCommonStockScheduleOfDividendReinvestmentPlanDetails</Role>
      <ShortName>Common Stock - Schedule of Dividend Reinvestment Plan (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>995977 - Disclosure - Earnings Per Share - Computation of Weighted Average Basic and Diluted Net Increase (Decrease) in Net Assets Per Share from Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureEarningsPerShareComputationOfWeightedAverageBasicAndDilutedNetIncreaseDecreaseInNetAssetsPerShareFromOperationsDetails</Role>
      <ShortName>Earnings Per Share - Computation of Weighted Average Basic and Diluted Net Increase (Decrease) in Net Assets Per Share from Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>995987 - Disclosure - Income Taxes - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureIncomeTaxesAdditionalInformationDetails</Role>
      <ShortName>Income Taxes - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>995997 - Disclosure - Income Taxes - Net Operating Loss Forfeiture for Income (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureIncomeTaxesNetOperatingLossForfeitureForIncomeDetails</Role>
      <ShortName>Income Taxes - Net Operating Loss Forfeiture for Income (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>996007 - Disclosure - Income Taxes - Components of Distributable Paid (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureIncomeTaxesComponentsOfDistributablePaidDetails</Role>
      <ShortName>Income Taxes - Components of Distributable Paid (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>996017 - Disclosure - Income Taxes - Components of Distributable Earning (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureIncomeTaxesComponentsOfDistributableEarningDetails</Role>
      <ShortName>Income Taxes - Components of Distributable Earning (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>996027 - Disclosure - Income Taxes - Investments and Cash Equivalents for Federal Income tax (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureIncomeTaxesInvestmentsAndCashEquivalentsForFederalIncomeTaxDetails</Role>
      <ShortName>Income Taxes - Investments and Cash Equivalents for Federal Income tax (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>996037 - Disclosure - Financial Highlights - Schedule of Financial Highlights (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureFinancialHighlightsScheduleOfFinancialHighlightsDetails</Role>
      <ShortName>Financial Highlights - Schedule of Financial Highlights (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>996047 - Disclosure - Financial Highlights - Schedule of Financial Highlights (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureFinancialHighlightsScheduleOfFinancialHighlightsParentheticalDetails</Role>
      <ShortName>Financial Highlights - Schedule of Financial Highlights (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>996057 - Disclosure - Segment Reporting - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSegmentReportingAdditionalInformationDetails</Role>
      <ShortName>Segment Reporting - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>996067 - Disclosure - Loan Portfolio Acquisition - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureLoanPortfolioAcquisitionAdditionalInformationDetails</Role>
      <ShortName>Loan Portfolio Acquisition - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="lien-20251231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>996077 - Disclosure - Subsequent Events - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://chicagoatlantic.com/20251231/taxonomy/role/DisclosureSubsequentEventsAdditionalInformationDetails</Role>
      <ShortName>Subsequent Events - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-K" isDefinitelyFs="true" isUsgaap="true" original="lien-20251231.htm">lien-20251231.htm</File>
    <File>lien-20251231.xsd</File>
  </InputFiles>
  <SupplementalFiles>
    <File>img257658426_0.jpg</File>
    <File>img257658426_1.gif</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="2038">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="15">http://xbrl.sec.gov/cyd/2025</BaseTaxonomy>
    <BaseTaxonomy items="41">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="5">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
