3.7.0.1 html 150 274 1 false 48 0 false 7 false false R1.htm 0001000 - Document - Document And Entity Information Sheet http://www.mdly.com/role/DocumentAndEntityInformation Document And Entity Information Cover 1 false false R2.htm 1001000 - Statement - Condensed Consolidated Balance Sheets Sheet http://www.mdly.com/role/CondensedConsolidatedBalanceSheets Condensed Consolidated Balance Sheets Statements 2 false false R3.htm 1001501 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Sheet http://www.mdly.com/role/CondensedConsolidatedBalanceSheetsParenthetical Condensed Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 1002000 - Statement - Condensed Consolidated Statements of Operations (unaudited) Sheet http://www.mdly.com/role/CondensedConsolidatedStatementsOfOperationsUnaudited Condensed Consolidated Statements of Operations (unaudited) Statements 4 false false R5.htm 1002001 - Statement - Condensed Consolidated Statements of Operations (unaudited) (Parenthetical) Sheet http://www.mdly.com/role/CondensedConsolidatedStatementsOfOperationsUnauditedParenthetical Condensed Consolidated Statements of Operations (unaudited) (Parenthetical) Statements 5 false false R6.htm 1003000 - Statement - Condensed Consolidated Statements of Comprehensive Income (unaudited) Sheet http://www.mdly.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeUnaudited Condensed Consolidated Statements of Comprehensive Income (unaudited) Statements 6 false false R7.htm 1004000 - Statement - Condensed Consolidated Statement of Changes in Equity and Redeemable Non-controlling Interests (unaudited) Sheet http://www.mdly.com/role/CondensedConsolidatedStatementOfChangesInEquityAndRedeemableNonControllingInterestsUnaudited Condensed Consolidated Statement of Changes in Equity and Redeemable Non-controlling Interests (unaudited) Statements 7 false false R8.htm 1004501 - Statement - Condensed Consolidated Statement of Changes in Equity and Redeemable Non-controlling Interests (unaudited) (Parenthetical) Sheet http://www.mdly.com/role/CondensedConsolidatedStatementOfChangesInEquityAndRedeemableNonControllingInterestsUnauditedParenthetical Condensed Consolidated Statement of Changes in Equity and Redeemable Non-controlling Interests (unaudited) (Parenthetical) Statements 8 false false R9.htm 1005000 - Statement - Condensed Consolidated Statements of Cash Flows (unaudited) Sheet http://www.mdly.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited Condensed Consolidated Statements of Cash Flows (unaudited) Statements 9 false false R10.htm 2101100 - Disclosure - ORGANIZATION AND BASIS OF PRESENTATION Sheet http://www.mdly.com/role/OrganizationAndBasisOfPresentation ORGANIZATION AND BASIS OF PRESENTATION Notes 10 false false R11.htm 2102100 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Sheet http://www.mdly.com/role/SummaryOfSignificantAccountingPolicies SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Notes 11 false false R12.htm 2103100 - Disclosure - INVESTMENTS Sheet http://www.mdly.com/role/Investments INVESTMENTS Notes 12 false false R13.htm 2104100 - Disclosure - FAIR VALUE MEASUREMENTS Sheet http://www.mdly.com/role/FairValueMeasurements FAIR VALUE MEASUREMENTS Notes 13 false false R14.htm 2105100 - Disclosure - OTHER ASSETS Sheet http://www.mdly.com/role/OtherAssets OTHER ASSETS Notes 14 false false R15.htm 2106100 - Disclosure - LOANS PAYABLE Sheet http://www.mdly.com/role/LoansPayable LOANS PAYABLE Notes 15 false false R16.htm 2107100 - Disclosure - SENIOR UNSECURED DEBT Sheet http://www.mdly.com/role/SeniorUnsecuredDebt SENIOR UNSECURED DEBT Notes 16 false false R17.htm 2108100 - Disclosure - ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER LIABILITIES Sheet http://www.mdly.com/role/AccountsPayableAccruedExpensesAndOtherLiabilities ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER LIABILITIES Notes 17 false false R18.htm 2109100 - Disclosure - COMMITMENTS AND CONTINGENCIES Sheet http://www.mdly.com/role/CommitmentsAndContingencies COMMITMENTS AND CONTINGENCIES Notes 18 false false R19.htm 2110100 - Disclosure - RELATED PARTY TRANSACTIONS Sheet http://www.mdly.com/role/RelatedPartyTransactions RELATED PARTY TRANSACTIONS Notes 19 false false R20.htm 2111100 - Disclosure - EARNINGS (LOSS) PER CLASS A SHARE Sheet http://www.mdly.com/role/EarningsLossPerClassShare EARNINGS (LOSS) PER CLASS A SHARE Notes 20 false false R21.htm 2112100 - Disclosure - INCOME TAXES Sheet http://www.mdly.com/role/IncomeTaxes INCOME TAXES Notes 21 false false R22.htm 2113100 - Disclosure - COMPENSATION EXPENSE Sheet http://www.mdly.com/role/CompensationExpense COMPENSATION EXPENSE Notes 22 false false R23.htm 2114100 - Disclosure - REDEEMABLE NON-CONTROLLING INTERESTS Sheet http://www.mdly.com/role/RedeemableNonControllingInterests REDEEMABLE NON-CONTROLLING INTERESTS Notes 23 false false R24.htm 2115100 - Disclosure - MARKET AND OTHER RISK FACTORS Sheet http://www.mdly.com/role/MarketAndOtherRiskFactors MARKET AND OTHER RISK FACTORS Notes 24 false false R25.htm 2117100 - Disclosure - SUBSEQUENT EVENTS Sheet http://www.mdly.com/role/SubsequentEvents SUBSEQUENT EVENTS Notes 25 false false R26.htm 2202201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) Sheet http://www.mdly.com/role/SummaryOfSignificantAccountingPoliciesPolicies SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) Policies 26 false false R27.htm 2303301 - Disclosure - INVESTMENTS (Tables) Sheet http://www.mdly.com/role/InvestmentsTables INVESTMENTS (Tables) Tables http://www.mdly.com/role/Investments 27 false false R28.htm 2305301 - Disclosure - OTHER ASSETS (Tables) Sheet http://www.mdly.com/role/OtherAssetsTables OTHER ASSETS (Tables) Tables http://www.mdly.com/role/OtherAssets 28 false false R29.htm 2306301 - Disclosure - LOANS PAYABLE (Tables) Sheet http://www.mdly.com/role/LoansPayableTables LOANS PAYABLE (Tables) Tables http://www.mdly.com/role/LoansPayable 29 false false R30.htm 2307301 - Disclosure - SENIOR UNSECURED DEBT (Tables) Sheet http://www.mdly.com/role/SeniorUnsecuredDebtTables SENIOR UNSECURED DEBT (Tables) Tables http://www.mdly.com/role/SeniorUnsecuredDebt 30 false false R31.htm 2308301 - Disclosure - ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER LIABILITIES (Tables) Sheet http://www.mdly.com/role/AccountsPayableAccruedExpensesAndOtherLiabilitiesTables ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER LIABILITIES (Tables) Tables http://www.mdly.com/role/AccountsPayableAccruedExpensesAndOtherLiabilities 31 false false R32.htm 2309301 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) Sheet http://www.mdly.com/role/CommitmentsAndContingenciesTables COMMITMENTS AND CONTINGENCIES (Tables) Tables http://www.mdly.com/role/CommitmentsAndContingencies 32 false false R33.htm 2311301 - Disclosure - EARNINGS (LOSS) PER CLASS A SHARE (Tables) Sheet http://www.mdly.com/role/EarningsLossPerClassShareTables EARNINGS (LOSS) PER CLASS A SHARE (Tables) Tables http://www.mdly.com/role/EarningsLossPerClassShare 33 false false R34.htm 2313301 - Disclosure - COMPENSATION EXPENSE (Tables) Sheet http://www.mdly.com/role/CompensationExpenseTables COMPENSATION EXPENSE (Tables) Tables http://www.mdly.com/role/CompensationExpense 34 false false R35.htm 2401401 - Disclosure - ORGANIZATION AND BASIS OF PRESENTATION (Details) Sheet http://www.mdly.com/role/OrganizationAndBasisOfPresentationDetails ORGANIZATION AND BASIS OF PRESENTATION (Details) Details http://www.mdly.com/role/OrganizationAndBasisOfPresentation 35 false false R36.htm 2402402 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) Sheet http://www.mdly.com/role/SummaryOfSignificantAccountingPoliciesDetails SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) Details http://www.mdly.com/role/SummaryOfSignificantAccountingPoliciesPolicies 36 false false R37.htm 2403402 - Disclosure - INVESTMENTS (Composition of Investments) (Details) Sheet http://www.mdly.com/role/InvestmentsCompositionOfInvestmentsDetails INVESTMENTS (Composition of Investments) (Details) Details http://www.mdly.com/role/InvestmentsTables 37 false false R38.htm 2403403 - Disclosure - INVESTMENTS (Narrative) (Details) Sheet http://www.mdly.com/role/InvestmentsNarrativeDetails INVESTMENTS (Narrative) (Details) Details http://www.mdly.com/role/InvestmentsTables 38 false false R39.htm 2404401 - Disclosure - FAIR VALUE MEASUREMENTS (Details) Sheet http://www.mdly.com/role/FairValueMeasurementsDetails FAIR VALUE MEASUREMENTS (Details) Details http://www.mdly.com/role/FairValueMeasurements 39 false false R40.htm 2405402 - Disclosure - OTHER ASSETS (Details) Sheet http://www.mdly.com/role/OtherAssetsDetails OTHER ASSETS (Details) Details http://www.mdly.com/role/OtherAssetsTables 40 false false R41.htm 2406402 - Disclosure - LOANS PAYABLE (Schedule of Debt) (Details) Sheet http://www.mdly.com/role/LoansPayableScheduleOfDebtDetails LOANS PAYABLE (Schedule of Debt) (Details) Details http://www.mdly.com/role/LoansPayableTables 41 false false R42.htm 2406403 - Disclosure - LOANS PAYABLE (Narrative) (Details) Sheet http://www.mdly.com/role/LoansPayableNarrativeDetails LOANS PAYABLE (Narrative) (Details) Details http://www.mdly.com/role/LoansPayableTables 42 false false R43.htm 2407402 - Disclosure - SENIOR UNSECURED DEBT (Schedule of Senior Unsecured Debt) (Details) Sheet http://www.mdly.com/role/SeniorUnsecuredDebtScheduleOfSeniorUnsecuredDebtDetails SENIOR UNSECURED DEBT (Schedule of Senior Unsecured Debt) (Details) Details http://www.mdly.com/role/SeniorUnsecuredDebtTables 43 false false R44.htm 2407403 - Disclosure - SENIOR UNSECURED DEBT (Narrative) (Details) Sheet http://www.mdly.com/role/SeniorUnsecuredDebtNarrativeDetails SENIOR UNSECURED DEBT (Narrative) (Details) Details http://www.mdly.com/role/SeniorUnsecuredDebtTables 44 false false R45.htm 2408402 - Disclosure - ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER LIABILITIES (Details) Sheet http://www.mdly.com/role/AccountsPayableAccruedExpensesAndOtherLiabilitiesDetails ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER LIABILITIES (Details) Details http://www.mdly.com/role/AccountsPayableAccruedExpensesAndOtherLiabilitiesTables 45 false false R46.htm 2409402 - Disclosure - COMMITMENTS AND CONTINGENCIES (Narrative) (Details) Sheet http://www.mdly.com/role/CommitmentsAndContingenciesNarrativeDetails COMMITMENTS AND CONTINGENCIES (Narrative) (Details) Details http://www.mdly.com/role/CommitmentsAndContingenciesTables 46 false false R47.htm 2409403 - Disclosure - COMMITMENTS AND CONTINGENCIES (Future Minimum Rental Payments) (Details) Sheet http://www.mdly.com/role/CommitmentsAndContingenciesFutureMinimumRentalPaymentsDetails COMMITMENTS AND CONTINGENCIES (Future Minimum Rental Payments) (Details) Details http://www.mdly.com/role/CommitmentsAndContingenciesTables 47 false false R48.htm 2410401 - Disclosure - RELATED PARTY TRANSACTIONS (Details) Sheet http://www.mdly.com/role/RelatedPartyTransactionsDetails RELATED PARTY TRANSACTIONS (Details) Details http://www.mdly.com/role/RelatedPartyTransactions 48 false false R49.htm 2411402 - Disclosure - EARNINGS (LOSS) PER CLASS A SHARE (Basic and Diluted Income per Class A Share) (Details) Sheet http://www.mdly.com/role/EarningsLossPerClassShareBasicAndDilutedIncomePerClassShareDetails EARNINGS (LOSS) PER CLASS A SHARE (Basic and Diluted Income per Class A Share) (Details) Details http://www.mdly.com/role/EarningsLossPerClassShareTables 49 false false R50.htm 2411403 - Disclosure - EARNINGS (LOSS) PER CLASS A SHARE (Narrative) (Details) Sheet http://www.mdly.com/role/EarningsLossPerClassShareNarrativeDetails EARNINGS (LOSS) PER CLASS A SHARE (Narrative) (Details) Details http://www.mdly.com/role/EarningsLossPerClassShareTables 50 false false R51.htm 2412401 - Disclosure - INCOME TAXES (Details) Sheet http://www.mdly.com/role/IncomeTaxesDetails INCOME TAXES (Details) Details http://www.mdly.com/role/IncomeTaxes 51 false false R52.htm 2413402 - Disclosure - COMPENSATION EXPENSE (Narrative) (Details) Sheet http://www.mdly.com/role/CompensationExpenseNarrativeDetails COMPENSATION EXPENSE (Narrative) (Details) Details http://www.mdly.com/role/CompensationExpenseTables 52 false false R53.htm 2413403 - Disclosure - COMPENSATION EXPENSE (Schedule of RSU Activity) (Details) Sheet http://www.mdly.com/role/CompensationExpenseScheduleOfRsuActivityDetails COMPENSATION EXPENSE (Schedule of RSU Activity) (Details) Details http://www.mdly.com/role/CompensationExpenseTables 53 false false R54.htm 2414401 - Disclosure - REDEEMABLE NON-CONTROLLING INTERESTS (Details) Sheet http://www.mdly.com/role/RedeemableNonControllingInterestsDetails REDEEMABLE NON-CONTROLLING INTERESTS (Details) Details http://www.mdly.com/role/RedeemableNonControllingInterests 54 false false R55.htm 2417401 - Disclosure - SUBSEQUENT EVENTS (Details) Sheet http://www.mdly.com/role/SubsequentEventsDetails SUBSEQUENT EVENTS (Details) Details http://www.mdly.com/role/SubsequentEvents 55 false false All Reports Book All Reports mdly-20170331.xml mdly-20170331.xsd mdly-20170331_cal.xml mdly-20170331_def.xml mdly-20170331_lab.xml mdly-20170331_pre.xml true true