<?xml version="1.0" encoding="utf-8"?>
<FilingSummary xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <Version>2.4.0.8</Version>
  <ProcessingTime />
  <ReportFormat>Html</ReportFormat>
  <ContextCount>82</ContextCount>
  <ElementCount>173</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>42</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>6</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001000 - Document - Document and entity information Document</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/DocumentAndEntityInformationDocument</Role>
      <ShortName>Document and entity information Document</ShortName>
    </Report>
    <Report>
      <IsDefault>true</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>1001000 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/ConsolidatedBalanceSheets</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1002500 - Statement - Consolidated Balance Sheets Parentheticals (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/ConsolidatedBalanceSheetsParentheticalsParentheticals</Role>
      <ShortName>Consolidated Balance Sheets Parentheticals (Parentheticals)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1003000 - Statement - Consolidated Statements of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/ConsolidatedStatementsOfOperations</Role>
      <ShortName>Consolidated Statements of Operations</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1004000 - Statement - Consolidated Statements of Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/ConsolidatedStatementsOfEquity</Role>
      <ShortName>Consolidated Statements of Equity</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1005000 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/ConsolidatedStatementsOfCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>2101100 - Disclosure - Organization and basis of presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/OrganizationAndBasisOfPresentation</Role>
      <ShortName>Organization and basis of presentation</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>2107100 - Disclosure - Mortgage loans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/MortgageLoans</Role>
      <ShortName>Mortgage loans</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>2110100 - Disclosure - Real estate assets, net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/RealEstateAssetsNet</Role>
      <ShortName>Real estate assets, net</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2113100 - Disclosure - Fair value of financial instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/FairValueOfFinancialInstruments</Role>
      <ShortName>Fair value of financial instruments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2122100 - Disclosure - Repurchase agreement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/RepurchaseAgreement</Role>
      <ShortName>Repurchase agreement</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2128100 - Disclosure - Commitments and contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/CommitmentsAndContingencies</Role>
      <ShortName>Commitments and contingencies</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2130100 - Disclosure - Related party transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/RelatedPartyTransactions</Role>
      <ShortName>Related party transactions</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2131100 - Disclosure - Share-based payments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/ShareBasedPayments</Role>
      <ShortName>Share-based payments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2132100 - Disclosure - Income taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/IncomeTaxes</Role>
      <ShortName>Income taxes</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2133100 - Disclosure - Earnings per share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/EarningsPerShare</Role>
      <ShortName>Earnings per share</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2134100 - Disclosure - Segment information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/SegmentInformation</Role>
      <ShortName>Segment information</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2135100 - Disclosure - Subsequent events (Notes)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.altisourceresi.com/role/SubsequentEventsNotes</Role>
      <ShortName>Subsequent events (Notes)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2313301 - Disclosure - Fair value of financial instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/FairValueOfFinancialInstrumentsTables</Role>
      <ShortName>Fair value of financial instruments (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2322301 - Disclosure - Repurchase agreement Repurchase agreements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/RepurchaseAgreementRepurchaseAgreementsTables</Role>
      <ShortName>Repurchase agreement Repurchase agreements (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2330301 - Disclosure - Related party transactions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/RelatedPartyTransactionsTables</Role>
      <ShortName>Related party transactions (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2333301 - Disclosure - Earnings per share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/EarningsPerShareTables</Role>
      <ShortName>Earnings per share (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2401401 - Disclosure - Organization and basis of presentation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/OrganizationAndBasisOfPresentationDetails</Role>
      <ShortName>Organization and basis of presentation (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2407401 - Disclosure - Mortgage loans (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/MortgageLoansDetails</Role>
      <ShortName>Mortgage loans (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2410401 - Disclosure - Real estate assets, net - Components of real estate assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/RealEstateAssetsNetComponentsOfRealEstateAssetsDetails</Role>
      <ShortName>Real estate assets, net - Components of real estate assets (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2413402 - Disclosure - Fair value of financial instruments - Fair value, assets and liabilities measured on recurring and nonrecurring basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/FairValueOfFinancialInstrumentsFairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisDetails</Role>
      <ShortName>Fair value of financial instruments - Fair value, assets and liabilities measured on recurring and nonrecurring basis (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2413403 - Disclosure - Fair value of financial instruments - Fair value, assets measure on recurring basis, unobservable inputs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/FairValueOfFinancialInstrumentsFairValueAssetsMeasureOnRecurringBasisUnobservableInputsDetails</Role>
      <ShortName>Fair value of financial instruments - Fair value, assets measure on recurring basis, unobservable inputs (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2413404 - Disclosure - Fair value of financial instruments - Fair value by delinquency (details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/FairValueOfFinancialInstrumentsFairValueByDelinquencyDetails</Role>
      <ShortName>Fair value of financial instruments - Fair value by delinquency (details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2413405 - Disclosure - Fair value of financial instruments - Fair value inputs, quantitative information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/FairValueOfFinancialInstrumentsFairValueInputsQuantitativeInformationDetails</Role>
      <ShortName>Fair value of financial instruments - Fair value inputs, quantitative information (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2422402 - Disclosure - Repurchase agreement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/RepurchaseAgreementDetails</Role>
      <ShortName>Repurchase agreement (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2428401 - Disclosure - Commitments and contingencies (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/CommitmentsAndContingenciesDetails</Role>
      <ShortName>Commitments and contingencies (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2430402 - Disclosure - Related party transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/RelatedPartyTransactionsDetails</Role>
      <ShortName>Related party transactions (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2431401 - Disclosure - Share-based payments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/ShareBasedPaymentsDetails</Role>
      <ShortName>Share-based payments (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2432401 - Disclosure - Income taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/IncomeTaxesDetails</Role>
      <ShortName>Income taxes (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2433402 - Disclosure - Earnings per share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/EarningsPerShareDetails</Role>
      <ShortName>Earnings per share (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2435401 - Disclosure - Subsequent events (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altisourceresi.com/role/SubsequentEventsDetails</Role>
      <ShortName>Subsequent events (Details)</ShortName>
    </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">Element us-gaap_ProceedsFromIssuanceOfCommonStock had a mix of decimals attribute values: -5 -3.</Log>
    <Log type="Info">Element us-gaap_SecuredDebtRepurchaseAgreements had a mix of decimals attribute values: -3 0.</Log>
    <Log type="Info">'Monetary' elements on report '2407401 - Disclosure - Mortgage loans (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2430402 - Disclosure - Related party transactions (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">'Monetary' elements on report '2435401 - Disclosure - Subsequent events (Details)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">Process Flow-Through: 1001000 - Statement - Consolidated Balance Sheets</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Sep. 30, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Jun. 07, 2012'</Log>
    <Log type="Info">Process Flow-Through: 1002500 - Statement - Consolidated Balance Sheets Parentheticals (Parentheticals)</Log>
    <Log type="Info">Process Flow-Through: 1003000 - Statement - Consolidated Statements of Operations</Log>
    <Log type="Info">	Process Flow-Through: Removing column '1 Months Ended
Jun. 30, 2012'</Log>
    <Log type="Info">	Process Flow-Through: Removing column '4 Months Ended
Sep. 30, 2012'</Log>
    <Log type="Info">Process Flow-Through: 1005000 - Statement - Consolidated Statements of Cash Flows</Log>
  </Logs>
  <InputFiles>
    <File>resi-20130930.xml</File>
    <File>resi-20130930.xsd</File>
    <File>resi-20130930_cal.xml</File>
    <File>resi-20130930_def.xml</File>
    <File>resi-20130930_lab.xml</File>
    <File>resi-20130930_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
