2013 RSU Grants [Member] 2013 RSU Grants 2013 RSU Grants [Member] Adjustments to Additional Paid in Capital, Conversion of Convertible Notes Conversion of Convertible Notes Adjustments to Additional Paid in Capital, Conversion of Convertible Notes Amortization of Debt Issuance Costs and other Amortization of debt issuance costs and other Amortization of debt issuance costs and other Board member ownership % in Fund Board Member ownership % Related party disclosure - percentage the board member owns in an entity Business Acquisition Contingent Consideration Minimum Percentage of Investment Advisory Fees Business Acquisition Contingent Consideration Minimum Percentage of Investment Advisory Fees Represents the minimum fixed percentage of investment advisory fees received which are then payable by the Company under the contingent consideration arrangement. Business Acquisition Cost of Acquired Entity Cash Payable Business Acquisition Cost of Acquired Entity Cash Payable Business Acquisition Cost of Acquired Entity Cash Payable Business Acquisition Cost of Acquired Entity Final Contingent Consideration Payment Date Business Acquisition Cost of Acquired Entity Final Contingent Consideration Payment Date Represents the date (presented in years after the Merger Date) which the Company must make a final payment to the seller representing the present value of future incentive fee sharing arrangements to the seller as contingent consideration. Business Acquisition Cost of Acquired Entity Initial Incentive Fees Business Acquisition Cost of Acquired Entity Initial Incentive Fees Represents the initial amount of incentive fees received by the merged entity for which all are to be paid out to the seller as contingent consideration. Business Acquisition, Cost of Acquired Entity Percentage of Fees in Excess of Initial Incentive Fees Business Acquisition, Cost of Acquired Entity Percentage of Fees in Excess of Initial Incentive Fees Represents the fee sharing percentage required to be paid out of incentive fees received by the merged entity for which all are to be paid out to the seller as contingent consideration after the first incentive fees have been paid. CIFC Corp [Member] CIFC Corp CIFC Corp CIFC FUNDING 2013-II - Board Member Investment [Member] CIFC FUNDING 2013-II - Board Member Investment Investment made in CIFC FUNDING 2013-II by Board of Directors member CIFC Funds [Member] CIFC Funds Consists of all CIFC Funds. CIFC LLC [Member] CIFC LLC information pertains to the entity CIFC LLC CIFC Corp CIFC Parent Holdings LLC [Member] CIFC Parent Holdings LLC [Member] Represents the details pertaining to CIFC Parent Holdings, LLC. CNCIM Merger Limitation on use of carryforward [Member] CNCIM Merger Limitation on use of carryforward [Member] Annual limitation of use related to NOLs carryforwards resulting from the CNCIM merger Co-Investment Fund [Member] Co-Investment Fund CIFC Co-Investment Fund [Member] Common stock par [Member] Common stock par [Member] Common stock par Computer and Equipment Software [Member] Computer and Equipment Software [Member] Computer and Equipment Software [Member] Condensed Financial Information [Abstract] Condensed Financial Information [Abstract] Condensed Statement of comprehensive income [Abstract] Condensed Statement of comprehensive income [Abstract] Consolidated Balance Sheets of Consolidated VIEs [Abstract] Consolidated Balance Sheets of Consolidated VIEs [Abstract] Consolidated CLOs and Other [Member] Consolidated CLOs and Other [Member] Consolidated CLOs and Other Consolidated Funds [Abstract] Investments in Funds Consolidated Funds [Abstract] Consolidated Funds [Member] Consolidated Funds Includes ALL consolidated entities under GAAP (inc. VIEs and VOEs). Consolidated Variable Interest Entities -- None. No documentation exists for this element. -- Consolidated VIEs [Abstract] Consolidated VIEs [Abstract] Consolidated VIEs [Abstract] Consolidated VIEs [Member] Consolidated VIEs Variable Interest Entities that are consolidated by CIFC. Consolidated Warehouse Investments Held Consolidated Warehouse Investments Held Consolidated Warehouses Investments as of a certain balance sheet date Contingent Liabilities Contingent Liabilities Contingent Liabilities Contingent Liabilities and Long Term Debt [Member] Contingent liabilities and the long-term debt of the Consolidated CLOs Represents contingent liabilites and the long term-debt of Consolidated CLOs. Contingent Liabilities at Fair Value Contingent Liabilities at Fair Value The fair value as of the balance sheet date of potential payments under contingent consideration arrangements. Contingent Liability [Member] Contingent Liabilities at Fair Value Represents the amount of potential cash payments that could result from the contigent consideration arrangement. Contributions to Distributions from subsidiaries Intercompany contributions Contributions to or Distributions from subsidiaries Co-Presidents [Member] Co-Presidents [Member] Co-Presidents Corporate non-consolidated entities [Member] Corporate non-consolidated entities [Member] Corporate non-consolidated entities [Member] Cypress Tree Investment Management LLC [Member] Cypress Tree Investment Management LLC Represents the details pertaining to CypressTree Investment Management, LLC, an entity acquired by Legacy CIFC. Debt instruments - Weighted Average, Remaining Maturity Debt instruments - Weighted Average, Remaining Maturity Debt instruments - Weighted Average, Remaining Maturity Debt related Disclosures [Abstract] Debt related Disclosures [Abstract] Deferred Purchase Payments and Contingent Liabilities Disclosure [Text Block] [Text Block] CONTINGENT LIABILITIES AT FAIR VALUE Deferred Purchase Payments and Contingent Liabilities Disclosure [Text Block] Payments on contingent liabilities Deferred Purchase Payments and Payments on Contingent Liabilities Payments on contingent liabilities Deferred purchase payments and payments on contingent liabilities The total cash outflows for the period which relate to deferred purchase payment liabilities and contingent liabilities. DFR Holdings Board of Directors [Member] DFR Holdings Board of Directors [Member] Board of directors appointed by DFR Holdings. DFR Holdings LLC [Member] DFR Holdings LLC Represents the details pertaining to DFR Holdings, LLC. DFR Holdings Transaction [Line Items] Organization, Consolidation and Presentation of Financial Statements [Line Items] for DFR Holdings Transaction [Table] DFR Holdings Transaction [Table] Organization, Consolidation and Presentation of Financial Statements DFR Holdings Transaction [Table] Dissenting Shareholders [Member] Dissenting Shareholders [Member] Dissenting Shareholders [Member] Dividend in kind cash [Member] Dividend in kind cash [Member] Dividend in kind cash [Member] Document And Entity Information -- None. No documentation exists for this element. -- DRF holdings ownership percentage DRF holdings ownership percentage DRF holdings ownership percentage Due To and From Brokers [Policy Text Block] Due To and From Brokers [Policy Text Block] Due To and From Brokers [Policy Text Block] Effective Income Tax Rate Reconciliation, PTP Conversion, Percent Effective Income Tax Rate Reconciliation, PTP Conversion, Percent Effective Income Tax Rate Reconciliation, PTP Conversion, Percent Equity leverage Equity leverage Number of times that equity is typically leveraged in the warehouses. Fair Value, Description of Composite quotes Fair Value, Description of Composite quotes Fair Value, Description of Composite quotes used to determine leveling hierarchy of assets. Fair Value Disclosures hierarchy table [Abstract] Fair Value Disclosures hierarchy table [Abstract] Fair Value Inputs, Recovery Rate Recovery rate (as a percent) Represents the percentage of recovery rate, used as an input to measure fair value. Fair Value Inputs, Reinvestment Price Reinvestment price Represents the reinvestment price, used as an input to measure fair value. Fair Value Inputs, Reinvestment Price-10Q Fair Value Inputs, Reinvestment Price Represents the reinvestment price, used as an input to measure fair value. 10Q Fair Value Inputs Reinvestment Spread Reinvestment spread over LIBOR (as a percent) Represents the percentage points above a reference rate (LIBOR) used to compute the variable interest rate earned on reinvested assets, used as an input to measure fair value. Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 due to Deconsolidation Transfer due to deconsolidation or sale Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 due to Deconsolidation Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Between Classes Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Between Classes This element represents the transfers in to and out of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place due to transfers between classes. Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level 3 Due to Consolidation or Deconsolidation Transfer in due to consolidation Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level 3 Due to Consolidation or Deconsolidation Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Transfers out of Level 3 Due to Deconsolidation Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Transfers out of Level 3 Due to Deconsolidation This element represents transfers out of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period due to deconsolidation. Fair Value, Option, Loans Held as Assets, Aggregate unpaid principal balance, Loans Fair Value, Option, Loans Held as Assets, Aggregate unpaid principal balance, Loans This item represents the aggregate fair value of unpaid principal balance of loans that have contractual principal amounts and for which the fair value option has been elected. Net (gain) loss on liabilities Net gain (loss) on liabilities Gain (Loss) on Liabilities at Fair Value Net gain (loss) on liabilities Represents the net realized and unrealized increase (decrease) in the market value of liabilities at fair value whose gains (losses) are included in earnings. Guarantees Cash Flows [Abstract] Guarantees Cash Flows [Abstract] Income Tax Disclosure Table 1 [Abstract] Income Tax Disclosure Table 1 [Abstract] Income Tax rates Disclosure [Abstract] Income Tax rates Disclosure [Abstract] Increase/Decrease in Gain (Loss) on Investments Net (gain) loss on investments The increase/decrease in cash flows from gain (loss) on Investments at fair value. Initial Vest [Member] Initial Vest [Member] Initial Vest [Member] Installments of Deferred Purchase Payments Installments of Deferred Purchase Payments Installments of Deferred Purchase Payments Intercompany contribution or distributions Intercompany distributions Intercompany distributions Intercompany contribution/distributions Intercompany preferred units Intercompany Preferred Units Intercompany preferred units Intercompany preferred units transaction Intercompany Preferred Units Intercompany preferred units transaction Interest Rate Applicable Period [Axis] Interest Rate Applicable Period [Axis] Information on period for which interest rates are applicable. Interest Rate Applicable Period [Domain] Interest Rate Applicable Period [Domain] Period for which interest rates are applicable. Interest Rate Applicable Period From 30 April 2015 Member Until Maturity [Member] From April 30, 2015 until maturity on October 30, 2035 The period from April 30, 2015 until maturity. Interest Rate Applicable Period Through 30 April 2015 [Member] Interest Rate Applicable Period Through 30 April 2015 [Member] Through April 30, 2015 The period through April 30, 2015. Investment Assets [Member] Investment and Derivative Assets Represents details pertaining to investment assets carried at fair value. Investment in Funds Investment in Funds Investment in Funds Investment in Funds [Member] Investment in Funds [Member] Investment in CIFC Funds Investments in Funds [Member] Investments in Funds [Member] Investments in Funds Investments in loans, corporate bonds and other products Investments in loans, corporate bonds and other products Investments in loans, corporate bonds and other products June 2014 RSUs [Member] June 2014 RSUs [Member] June 2014 RSUs March Junior Subordinated Debt [Member] March Junior Subordinated Debt [Member] Represents the details pertaining to March Junior Subordinated Notes. Net Asset Value [Member] Net Asset Value [Member] Net Asset Value [Member] Net Gain (Loss) From Activities Of Consolidated Entities -- None. No documentation exists for this element. -- Net Gain (Loss) from Activities of Consolidated Variable Interest Entities [Text Block] Net Gain (Loss) from Activities of Consolidated Variable Interest Entities [Text Block] Disclosure containing a tabular description of the components of net gain (loss) from activities of Consolidated Variable Interest Entities. Net (gain) loss on investments and liabilities at fair value and other (gain) loss. Net (gain) loss on investments and contingent liabilities / other (gain) loss The net effect of net (gain) loss on investments and liabilities at fair value and other (gain) loss. Net gain (loss) on investments in subsidiaries Net gain (loss on investments in subsidiaries Net gain (loss) on investments in subsidiaries Net gain (loss on investments in subsidiaries Net Gain (Loss) on other investments and derivatives Net Gain (Loss) on other investments and derivatives Net Gain (Loss) on other investments and derivatives Net Other Gains Losses Net other (gain) loss The gains and losses included in earnings that represent the difference between the sale price and the carrying value of other investments that were sold during the reporting period and unrealized gains and losses on other investments. This element refers to the gain (loss) and not to the cash proceeds of the sales. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. New York City [Member] New York City [Member] New York City [Member] Non cash Assets Deconsolidated Non cash Assets Deconsolidated Noncash assets deconsolidated NoncashContributionsForStockBasedAwards Exercise of share options and RSUs Exercise of stock options and RSUs Represents noncash contribution for stock-based compensation awards during the periods. Non cash Liabilities Deconsolidated Non cash Liabilities Deconsolidated non cash liabilities deconsolidated Non-cash net assets consolidated during the period Consolidation of net assets Non-cash net assets consolidated during the period. Non-cash net assets deconsolidated during the period Deconsolidation of net assets Non-cash net assets deconsolidated during the period. Noncontrolling Interest, Increase From Consolidation Consolidation of Consolidated Entities Increase in noncontrolling interests due to consolidation of Consolidated Funds. Number of CLOs, CDOs, Other loan-based products and warehouses [Line Items] Basis of Presentation and Principles of Consolidation [Line Items] for Schedule of Number of CLOs Consolidated [Table] Number of CLOs Deconsolidated Number of CLOs Deconsolidated number of CLOs deconsolidated Number of Collateralized Debt Obligations Not Consolidated Number of CDOs not consolidated Number of Collateralized Debt Obligations Not Consolidated Number of Collateralized Loan Obligations Consolidated Number of CLOs consolidated Represents the number of collateralized loan obligations consolidated as of the reporting date. Number of Collateralized Loan Obligations Not Consolidated Number of CLOs not consolidated Number of Collateralized Loan Obligations Not Consolidated Number of Credit Funds Consolidated Number of Credit Funds Consolidated Number of Credit Funds Consolidated Number of Credit Funds not consolidated Number of Credit Funds not consolidated Number of Credit Funds not consolidated Number of directors Directors designated by DFR Holdings Number of directors assigned to Company's Board of Directors my specific designee. Number of Dissenting shareholders Number of Dissenting shareholders Number of Dissenting shareholders Number of funds invested in Aggregate related party investment in funds Number of funds invested in by related parties. Number of Legacy CIFC CLOs subject to fee-sharing arrangements Number of Legacy CIFC CLOs subject to fee-sharing arrangements Number of Legacy CIFC CLOs subject to fee-sharing arrangements from the Merger. Number of related Party investments in CIFC CLOs Number of related Party investments in CIFC CLOs Number of related Party investments in CIFC CLOs. Number of Tranches Number of tranches Number of tranches in which the awards will be distributed October 2014 RSUs [Member] October 2014 RSUs [Member] October 2014 RSUs October Junior Subordinated Debt [Member] October Junior Subordinated Debt [Member] Represents the details pertaining to October Junior Subordinated Notes. Other VIEs [Member] Other VIEs [Member] Payments On Contingent Liabilities Payments On Contingent Liabilities - 100% fee sharing Payments On Contingent Liabilities Payments on Contingent Liabilities - 50% fee sharing Payments on Contingent Liabilities - 50% fee sharing Payments on Contingent Liabilities - 50% fee sharing Percentage of CIFC Common Shares Diluted Percentage of CIFC Common Shares Diluted The percentage of ownership including all common shares held and assuming full dilution of equity awards. Percentage of CIFC Common Shares Outstanding Percentage of CIFC Common Shares Outstanding Percentage of CIFC Common Shares Outstanding Performance Based Cliff Vest [Member] Performance-based Cliff Vest Performance based cliff vest Performance based shares, hurdles not yet met [Member] Performance Shares, hurdle not yet met Performance based shares for which performance hurdles have not yet been met Preferred stock callable period Preferred stock callable period Preferred stock callable period Projected Cash Flow Approach Valuation Technique [Member] Projected Cash Flow Approach Valuation Technique [Member] Projected cash flow approach valuation technique used to measure fair value. Quarterly [Member] Quarterly Quarterly [Member] Referral Agreement [Member] Referral Agreement Referral Agreement [Member] Related Party Transaction, Number of Shares Owned by Related Party Number of shares owned (shares) Related Party Transaction, Number of Shares Owned by Related Party Represents the number of shares of common stock owned by related party. Remaining Tranches [Member] Remaining Tranches [Member] Remaining Tranches [Member] Reorganization transaction [Member] Reorganization transaction [Member] Reorganization transaction [Member] Schedule of Consolidated VIE assets, non-recourse liabilities and maximum exposure [Table Text Block] Schedule of Consolidated VIE assets, non-recourse liabilities and maximum exposure [Table Text Block] Schedule of Consolidated VIE assets, non-recourse liabilities and maximum exposure. Schedule Of Net Gain (Loss) On Activities Of Consolidated Entities [Table Text Block] Summary of components of the entity's net gain (loss) on activities of Consolidated Entities Tabular disclosure of components of net gain (loss) from activities of Consolidated Entities. Schedule of Number of CLOs Consolidated [Table] Basis of Presentation and Principles of Consolidation Schedule of Number of CLOs Consolidated [Table] Senior Notes penalty annual capped rate Member] [Member] Senior Notes penalty annual capped rate Member] [Member] Senior Notes penalty annual capped rate Member] [Member] Senior Notes penalty rate per quarter [Member] Senior Notes penalty rate per quarter Senior Notes penalty rate per quarter [Member] Senior Secured Loan Fund [Member] Senior Secured Loan Fund Senior Secured Loan Fund [Member] Service Based 3 Year Vest [Member] Service Based 3 Year Vest [Member] Service based 3 year vest Service Based 4 Year Vest [Member] Service Based 4 Year Vest [Member] Service based 4 year vest [Member] Service Based 5 Year Vest [Member] Service Based 5 Year Vest [Member] Service based 5 year vest Share-based Compensation Award, Tranche Five [Member] Share-based Compensation Award, Tranche Five [Member] Share-based Compensation Award, Tranche Five [Member] Share-based Compensation Award, Tranche Four [Member] Share-based Compensation Award, Tranche Four [Member] Share-based Compensation Award, Tranche Four [Member] Sources of revenue Sources of revenue The number of sources of revenue for the Company. Special [Member] Special Special [Member] Statement [Axis] Statement [Axis] Statement [Axis] Statement [Domain] Statement [Domain] [Domain] for Statement [Axis] Stock Options and RSUs [Member] Stock Options and Restricted Stock Units Stock Options and RSUs [Member] Structured Products and Other Investments [Member] Structured Products and Other Investments [Member] The fair value of structured products and other investments. Subordinated and Senior [Member] Subordinated and Senior [Member] Subordinated and Senior [Member] Tactical Income Fund [Member] Tactical Income Fund Tactical Income Fund Total assets before assets of Consolidated Entities Subtotal Subtotal of total assets before assets of Consolidated Entities Total liabilities before liabilities of Consolidated Variable Interest Entities Subtotal Subtotal of total liabilities before liabilities of Consolidated Variable Interest Entities. Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level 3 Due to Consolidation or Acquisition Transfers Into Level 3 Due to Consolidation or Acquisition This element represents transfers in to assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period due to consolidation or acquisition. Transfers out due to consolidation or acquisition Transfers out due to consolidation or acquisition Transfers out due to consolidation or acquisition Treasury stock Par [Member] Treasury stock Par [Member] Treasury stock Par Unconsolidated VIE [Member] Unconsolidated VIE [Member] Unconsolidated VIE Unconsolidated VIEs [Abstract] Unconsolidated VIEs [Abstract] Unconsolidated VIEs [Abstract] Unconsolidated VOE [Axis] Unconsolidated VOE [Axis] Unconsolidated VOE [Axis] unconsolidated VOE [Domain] unconsolidated VOE [Domain] [Domain] for Unconsolidated VOE [Axis] Unconsolidated VOE [Member] Unconsolidated VOE [Member] Unconsolidated VOE Unconsolidated warehouses Unconsolidated warehouses Unconsolidated warehouses Variable Interest Entity Operating Expenses Expenses of Consolidated Entities The Variable Interest Entities operating expenses for the period. Warehouse Fund [Member] Warehouse Fund Closed end structured credit fund that invests primarily in interests in warehouses managed by CIFC [Member] Warehouses consolidated Warehouses consolidated Warehouses consolidated during the period Warehouses deconsolidated Warehouses deconsolidated Warehouses deconsolidated during the period Warehouses [Member] Warehouses Warehouses Accounting Policies [Abstract] Accrued and other liabilities Accounts Payable and Accrued Liabilities Accounts Receivable Accounts Receivable [Member] Accounts Receivable [Member] Receivables Accounts Receivable, Net Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Additional paid-in capital Additional Paid in Capital Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Adjustments for Change in Accounting Principle [Axis] Adjustments for Change in Accounting Principle [Axis] Adjustments for Error Correction [Domain] Adjustments for Error Correction [Domain] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Extension of warrants Adjustments to Additional Paid in Capital, Other Share-based compensation, net Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Share-based compensation Allocated Share-based Compensation Expense Amortization of intangible assets Amortization of Intangible Assets Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Arrangements and Non-arrangement Transactions [Domain] Arrangements and Non-arrangement Transactions [Domain] Assets Assets ASSETS Assets [Abstract] Assets, Fair Value Disclosure Assets, Fair Value Disclosure Award Date [Axis] Award Date [Axis] Award Date [Domain] Award Date [Domain] Award Type [Axis] Award Type [Axis] Business Acquisition, Acquiree Business Acquisition, Acquiree [Domain] Business Acquisition Business Acquisition [Axis] Contingent liabilities at fair value Business Acquisition, Contingent Consideration [Line Items] Business Combination, Contingent Consideration Arrangements [Abstract] Business Combinations Policy [Policy Text Block] Business Combinations Policy [Policy Text Block] Call Option [Member] Call Option [Member] Carrying Value Reported Value Measurement [Member] Cash and cash equivalents Cash Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Adjustments for Change in Accounting Principle [Domain] Adjustments for Change in Accounting Principle [Domain] Consolidated entities Classification Variable Interest Entity, Classification [Domain] Class of Stock [Domain] Class of Stock [Domain] Class of warrant, exercise price of warrants or rights Class of Warrant or Right, Exercise Price of Warrants or Rights Equity (Details 4) Class of Warrant or Right [Line Items] Class of warrant, outstanding Class of Warrant or Right, Outstanding Class of Warrant or Right Class of Warrant or Right [Table] Commitments and Contingencies Disclosure [Abstract] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Common Stock, Dividends, Per Share, Cash Paid Common Stock, Dividends, Per Share, Cash Paid Dividends declared, usd per share Common Stock, Dividends, Per Share, Declared Common Stock, Dividends, Per Share, Declared Common Stock [Member] Common Stock [Member] Common Stock, Par or Stated Value Per Share Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Common Stock, Value, Issued Common Stock, Value, Issued Retirement and Savings Plan Compensation and Employee Benefit Plans [Text Block] Compensation and Retirement Disclosure [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Condensed Statement of Comprehensive Income [Table Text Block] Condensed Statement of Comprehensive Income [Table Text Block] Consolidated Entities Consolidated Entities [Member] Consolidation, Eliminations [Member] Consolidation, Eliminations [Member] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Consolidation, Policy [Policy Text Block] Consolidation, Policy [Policy Text Block] Investment management contracts Contractual Rights [Member] Convertible Debt [Member] Convertible Debt Corporate Bonds Corporate Bond Securities [Member] Report Date [Axis] Report Date [Axis] Adoption of ASU 2014-13 (Note 3) Cumulative Effect on Retained Earnings, before Tax Current Federal, State and Local, Tax Expense (Benefit) Current Federal, State and Local, Tax Expense (Benefit) Current Federal Tax Expense (Benefit) Current Federal Tax Expense (Benefit) Current State and Local Tax Expense (Benefit) Current State and Local Tax Expense (Benefit) Conversion of Convertible Notes, shares Debt Conversion, Converted Instrument, Shares Issued Debt Disclosure [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Long-term Debt, Gross Long-term Debt, Gross Debt Instrument, Convertible, Number of Equity Instruments Debt Instrument, Convertible, Number of Equity Instruments Debt Instrument, Description of Variable Rate Basis Debt Instrument, Description of Variable Rate Basis Debt Instrument, face amount Debt Instrument, Face Amount Debt Instrument, Interest Rate During Period Debt Instrument, Interest Rate During Period Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption Price, Percentage Debt Instrument, Redemption Price, Percentage Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Issuance Cost Debt Issuance Cost Debt, Policy [Policy Text Block] Debt, Policy [Policy Text Block] Adoption of ASU 2015-02 (Note 3) Deconsolidation, Revaluation of Retained Investment, Gain (Loss), Amount Deconsolidation, Revaluation of Retained Investment, Gain (Loss), Amount Financial Statement Filing Date [Domain] Financial Statement Filing Date [Domain] Deferred Federal Income Tax Expense (Benefit) Deferred Federal Income Tax Expense (Benefit) Deferred Federal, State and Local, Tax Expense (Benefit) Deferred Federal, State and Local, Tax Expense (Benefit) Deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit) Deferred State and Local Income Tax Expense (Benefit) Deferred State and Local Income Tax Expense (Benefit) Deferred Tax Assets, Goodwill and Intangible Assets Deferred Tax Assets, Goodwill and Intangible Assets Deferred Tax Assets, Gross Deferred Tax Assets, Gross Deferred tax assets, net Deferred Tax Assets, Net Deferred Tax Assets, Net of Valuation Allowance Deferred Tax Assets, Net of Valuation Allowance Deferred Tax Assets, Operating Loss Carryforwards, Domestic Deferred Tax Assets, Operating Loss Carryforwards, Domestic Deferred Tax Assets, Operating Loss Carryforwards, State and Local Deferred Tax Assets, Operating Loss Carryforwards, State and Local Deferred Tax Assets, Other Deferred Tax Assets, Other Deferred Tax Assets, Valuation Allowance Deferred Tax Assets, Valuation Allowance Deferred Tax Liabilities, Net Deferred Tax Liabilities, Net Deferred Tax Liabilities, Net, Noncurrent Deferred Tax Liabilities, Net, Noncurrent Deferred Tax Liabilities, Other Deferred Tax Liabilities, Other Defined Benefit Plan, Benefit Obligation Defined Benefit Plan, Benefit Obligation Depreciation Depreciation Depreciation and amortization Depreciation, Depletion and Amortization Derivative, by Nature [Axis] Derivative, by Nature [Axis] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative [Line Items] Derivative [Line Items] Derivative, Name [Domain] Derivative, Name [Domain] Derivative [Table] Derivative [Table] Director Director [Member] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Distribution Made to Limited Liability Company (LLC) Member, Unit Distribution Distribution Made to Limited Liability Company (LLC) Member, Unit Distribution Dividends [Axis] Dividends [Axis] Dividends, Cash Dividends, Cash Common Stock [Abstract] Dividends, Common Stock [Abstract] Dividends [Domain] Dividends [Domain] Dividends, Paid-in-kind Dividends, Paid-in-kind Dividends, Paid-in-kind Distributions Payable Dividends Payable Earnings Per Share [Abstract] Earnings (loss) per share Earnings Per Share, Basic Earnings Per Share, Basic Earnings (loss) per share, Diluted Earnings Per Share, Diluted Earnings Per Share, Diluted, by Common Class, Including Two Class Method Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Policy [Policy Text Block] Earnings Per Share, Policy [Policy Text Block] EARNINGS (LOSS) PER SHARE Earnings Per Share [Text Block] Effective Income Tax Rate Reconciliation, Percent Effective Income Tax Rate Reconciliation, Percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Employee Benefits and Share-based Compensation Employee Benefits and Share-based Compensation Compensation not yet recognized, stock options and RSUs Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted average vesting period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Stock Options Employee Stock Option [Member] Energy [Axis] Energy [Axis] Energy [Domain] Energy [Domain] Equity Component [Domain] Equity Component [Domain] Equity Interest Type [Axis] Equity Interest Type [Axis] Equity Interest Issued or Issuable, Type Equity Interest Issued or Issuable, Type [Domain] Intercompany distributions from subsidiaries Proceeds from Equity Method Investment, Dividends or Distributions Investment in subsidiaries Equity Method Investments Intercompany investments in subsidiaries Adjustments for Error Corrections [Axis] Adjustments for Error Corrections [Axis] Estimated Fair Value Estimate of Fair Value Measurement [Member] Excess tax benefits from share-based payment arrangements Excess Tax Benefit from Share-based Compensation, Financing Activities Excess tax benefits from share-based payment arrangements Excess tax benefits from share-based payment arrangements Excess Tax Benefit from Share-based Compensation, Operating Activities Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets and liabilities measured at fair value Fair Value Measurements, Recurring and Nonrecurring Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss) Asset Class Asset Class [Domain] Narrative FN 5 Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Schedule of level 3 financial assets at fair value Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Carrying Value and Estimated Fair Value of Financial Assets and Liabilities Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Asset Class [Axis] Asset Class [Axis] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Schedule of carrying amounts and estimated fair values of financial assets and liabilities Fair Value, by Balance Sheet Grouping [Table Text Block] Fair Value, Hierarchy Fair Value, Hierarchy [Axis] Liability Class [Axis] Liability Class [Axis] Measurement Basis [Axis] Measurement Basis [Axis] Measurement Frequency Measurement Frequency [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Fair Value Disclosures [Abstract] FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] Estimated fair value, beginning of period Fair Value, Estimate Not Practicable, Investments Discount rate (as a percent) Fair Value Inputs, Discount Rate Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Quantitative Information about Level 3 Assets & Liabilities Fair Value Inputs, Liabilities, Quantitative Information [Line Items] Fair Value Inputs, Liabilities, Quantitative Information [Table] Fair Value Inputs, Liabilities, Quantitative Information [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block] Pre-payment rate (as a percent) Fair Value Inputs, Prepayment Rate Default rate (as a percent) Fair Value Inputs, Probability of Default Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Redemption Restriction, Description Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Redemption Restriction, Description Change in unrealized gains (losses) for the period for the liabilities outstanding as of the end of the period Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss) Junior Subordinated Notes Subordinated Debt Obligations, Fair Value Disclosure Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Liability Rollforward Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Measurement Frequency Fair Value, Measurement Frequency [Domain] Fair Value Measurement, Policy [Policy Text Block] Fair Value Measurement, Policy [Policy Text Block] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Recurring basis Fair Value, Measurements, Recurring [Member] Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Sale of investments in Consolidated CLOs Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Net realized/unrealized (gains) losses Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Estimated fair value, beginning of period Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value Estimated fair value, end of period Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value of Financial Instruments, Policy [Policy Text Block] Financial Instrument Financial Instrument [Axis] Financial liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Financial Instruments, Owned, Corporate Debt, at Fair Value Financial Instruments, Owned, Corporate Debt, at Fair Value Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Less than one year Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Thereafter Finite-Lived Intangible Assets, Amortization Expense, Rolling after Year Five In five years Finite-Lived Intangible Assets, Amortization Expense, Year Five In four years Finite-Lived Intangible Assets, Amortization Expense, Year Four In three years Finite-Lived Intangible Assets, Amortization Expense, Year Three In two years Finite-Lived Intangible Assets, Amortization Expense, Year Two Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Expected amortization expense of the existing intangible assets Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Intangible assets Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets, Major Class Name Finite-Lived Intangible Assets, Major Class Name [Domain] Expected amortization expense Finite-Lived Intangible Assets, Net Furniture and Fixtures [Member] Furniture and Fixtures [Member] Net gain (loss) on investments Gain (Loss) on Investments Net gain on sale of management contract Gain (Loss) on Disposition of Business Net gain on sale of management contract General and administrative expenses General and Administrative Expense General Partners' Investment General Partners' Capital Account Goodwill Goodwill Goodwill and Intangible Assets Disclosure [Abstract] INTANGIBLE ASSETS AND GOODWILL Goodwill and Intangible Assets Disclosure [Text Block] Goodwill and Intangible Assets, Intangible Assets, Indefinite-Lived, Policy [Policy Text Block] Goodwill and Intangible Assets, Intangible Assets, Indefinite-Lived, Policy [Policy Text Block] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations [Line Items] Guarantor Obligations [Line Items] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Guarantees [Abstract] Guarantees [Text Block] Guarantees [Text Block] Guarantor Subsidiaries [Member] Guarantor Subsidiaries [Member] Impairment of intangible assets Impairment of Intangible Assets, Finite-lived Income (loss) before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income (loss) before income taxes Income (loss) before income taxes Income Statement [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] Income Tax Disclosure [Text Block] Cash paid for income taxes Income Taxes Paid Income Tax Examination [Line Items] Income Tax Examination [Line Items] Income Tax Examination [Table] Income Tax Examination [Table] Income Tax Expense (Benefit) Income Tax Expense (Benefit) Income Tax Expense (Benefit) Income Tax, Policy [Policy Text Block] Income Tax, Policy [Policy Text Block] Accrued and Other Liabilities Increase (Decrease) in Accrued Liabilities Due from brokers Increase (Decrease) in Receivables from Brokers-Dealers and Clearing Organizations Interest payable Increase (Decrease) in Interest Payable, Net Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Due to brokers Increase (Decrease) in Payables to Broker-Dealers and Clearing Organizations Prepaid and other assets Increase (Decrease) in Prepaid Expense and Other Assets Receivables Increase (Decrease) in Receivables Change in restricted cash and cash equivalents Increase (Decrease) in Restricted Cash Change in restricted cash and cash equivalents Increase (Decrease) in Restricted Cash for Operating Activities Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Incremental Common Shares Attributable to Dilutive Effect of Nonvested Shares with Forfeitable Dividends Incremental Common Shares Attributable to Dilutive Effect of Nonvested Shares with Forfeitable Dividends Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements INTANGIBLE ASSETS Intangible Assets Disclosure [Text Block] Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Intangible Assets, Net (Excluding Goodwill) [Abstract] Intangible Assets, Net (Excluding Goodwill) [Abstract] Interest income Interest and Dividend Income, Operating Investment income Interest expense Interest Expense Interest Expense, Debt Interest Expense, Debt Interest income from investments Interest Income (Expense), Net Cash paid for interest Interest Paid Interest payable Interest Payable Management & Incentive fees Investment Advisory, Management and Administrative Fees Investments Investments Related Party investments Investments Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Investment and beneficial interests in CLOs Investments [Member] Investment Type Investment Type [Axis] Investments Investments [Domain] Base Compensation Labor and Related Expense Leaseholds and Leasehold Improvements [Member] Leaseholds and Leasehold Improvements [Member] Liabilities Liabilities Liabilities LIABILITIES Liabilities [Abstract] TOTAL LIABILITIES AND EQUITY Liabilities and Equity Financial and Nonfinancial Liabilities, Fair Value Disclosure Financial and Nonfinancial Liabilities, Fair Value Disclosure Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Loans Receivable, Fair Value Disclosure Loans Receivable, Fair Value Disclosure Loans Loans Receivable [Member] LIBOR [Member] London Interbank Offered Rate (LIBOR) [Member] Long-term debt Long-term Debt Long-term debt: Long-term Debt, Unclassified [Abstract] Long-term Debt, at Fair Value Long-term Debt, Fair Value Long-term Debt Long-term Debt [Member] LONG-TERM DEBT Long-term Debt [Text Block] Long-term Debt, Type Long-term Debt, Type [Axis] Long-term Debt, Type Long-term Debt, Type [Domain] Long-term Debt, Weighted Average Interest Rate Long-term Debt, Weighted Average Interest Rate Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Minimum Noncontrolling interests in Consolidated Funds (Note 2) Stockholders' Equity Attributable to Noncontrolling Interest Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Noncontrolling Interest Disclosure [Text Block] Noncontrolling Interest Disclosure [Text Block] ORGANIZATION Nature of Operations [Text Block] Net increase (decrease) in cash and cash equivalents Net Cash Provided by (Used in) Continuing Operations Net Cash Provided by (Used in) Continuing Operations Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net Income (Loss) Attributable to Parent Net Income (Loss) Attributable to Parent Net income (loss) Net Income (Loss) Attributable to Parent [Abstract] Net (income) loss attributable to noncontrolling interest in Consolidated Entities Net Income (Loss) Attributable to Noncontrolling Interest Net Income (Loss) Attributable to Noncontrolling Interest New Accounting Pronouncement, Early Adoption, Effect [Member] New Accounting Pronouncement, Early Adoption, Effect [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] Non-compete agreements Noncompete Agreements [Member] Deconsolidation of Consolidated Entities Noncontrolling Interest, Decrease from Deconsolidation Contribution from noncontrolling interests Noncontrolling Interest, Increase from Subsidiary Equity Issuance Noncontrolling Interest in Variable Interest Entity Noncontrolling Interest in Variable Interest Entity Noncontrolling Interest [Member] Noncontrolling Interest [Member] Non-Guarantor Subsidiaries [Member] Non-Guarantor Subsidiaries [Member] Expenses Noninterest Expense [Abstract] Number of Reportable Segments Number of Reportable Segments Occupancy, Net Occupancy, Net Operating Expenses Operating Expenses Lease Commitments Operating Leased Assets [Line Items] Future Minimum Payments Due Operating Leases, Future Minimum Payments Due Next Twelve Months Operating Leases, Future Minimum Payments Due, Next Twelve Months Due in Five Years Operating Leases, Future Minimum Payments, Due in Five Years Due in Four Years Operating Leases, Future Minimum Payments, Due in Four Years Due in three years Operating Leases, Future Minimum Payments, Due in Three Years Due in two years Operating Leases, Future Minimum Payments, Due in Two Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Operating Loss Carryforwards Operating Loss Carryforwards Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Presentation and Principles of Consolidation Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Unfunded investment commitments Other Commitment Other Commitments and Contingencies Other Commitment, Fiscal Year Maturity [Abstract] Other Comprehensive Income Location [Axis] Other Comprehensive Income Location [Axis] Other Comprehensive Income Location [Domain] Other Comprehensive Income Location [Domain] Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Other Investments Other Investments Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Net other gain (loss) Other Income (Expense) and Gain (Loss) Other Nonoperating Income (Expense) [Abstract] Other Prepaid Expense, Current Other Prepaid Expense, Current Paid-in-Kind Interest Paid-in-Kind Interest Parent Company [Member] Parent Company [Member] Partners' Capital Account, Distributions Partners' Capital Account, Distributions Due to brokers Payables to Broker-Dealers and Clearing Organizations Purchases of equipment and improvements Payments for (Proceeds from) Productive Assets Purchases of investments Payments for Purchase of Securities, Operating Activities Repurchases of common shares Payments for Repurchase of Common Stock Debt Issuance Cost Payments of Debt Issuance Costs Distributions paid Payments of Dividends Payments for tax from the delivery of restricted stock units Payments of Stock Issuance Costs Intercompany investments in subsidiaries Payments to Acquire Interest in Subsidiaries and Affiliates Intercompany investments in subsidiaries Purchases of investments Payments to Acquire Marketable Securities Distributions to noncontrolling interests Payments to Noncontrolling Interests Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Position [Axis] Position [Axis] Position [Domain] Position [Domain] Preferred Stock, Dividend Rate, Percentage Preferred Stock, Dividend Rate, Percentage Preferred Units by Name [Axis] Preferred Units by Name [Axis] Preferred Units, Class [Domain] Preferred Units, Class [Domain] Distribution Type [Domain] Preferred Units, Contributed Capital Preferred Units, Contributed Capital Preferred Units, Issued Preferred Units, Issued Prepaid and other assets Prepaid Expense and Other Assets Proceeds from Issuance of Debt Proceeds from Issuance of Debt Proceeds from issuance of long-term debt Proceeds from Issuance of Long-term Debt Contributions from noncontrolling interests Proceeds from Noncontrolling Interests Proceeds from Other Equity Proceeds from extension of warrants Sales of investments Proceeds from Sale and Maturity of Marketable Securities Proceeds from the sale of management contracts Proceeds from Sale of Intangible Assets Sales of investments Proceeds from Sale of Securities, Operating Activities Proceeds from the exercise of options Proceeds from Stock Options Exercised Professional Fees Professional Fees Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) Property, Plant and Equipment [Abstract] Property, Plant and Equipment, Additions Property, Plant and Equipment, Additions Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Equipment and Improvements Property, Plant and Equipment Disclosure [Text Block] Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Equipment and improvements, net Property, Plant and Equipment, Net Property, Plant and Equipment, Policy [Policy Text Block] Property, Plant and Equipment, Policy [Policy Text Block] Property, Plant and Equipment [Table Text Block] Property, Plant and Equipment Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Useful Life Property, Plant and Equipment, Useful Life Range Range [Axis] Range Range [Domain] Due from brokers Receivables from Brokers-Dealers and Clearing Organizations Receivables Receivables, Net, Current Related Party Related Party [Domain] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Related Party Transactions [Abstract] Related Party Related Party [Axis] RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] Repayments of Long-term Debt Repayments of Long-term Debt Payments made on long-term debt Repayments of Long-term Debt Restricted cash and cash equivalents Restricted Cash and Cash Equivalents Share-based compensation, net Restricted Stock, Shares Issued Net of Shares for Tax Withholdings Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Retained earnings (deficit) Retained Earnings (Accumulated Deficit) Retained Earnings, Appropriated Retained Earnings, Appropriated Retained Earnings, Appropriated [Member] Retained Earnings, Appropriated [Member] Retained Earnings [Member] Retained Earnings [Member] Revenue Recognition, Policy [Policy Text Block] Revenue Recognition, Policy [Policy Text Block] Total net revenues Revenues Revenues Revenues [Abstract] Revolving credit facility Revolving Credit Facility [Member] Employee compensation and benefits Salaries, Wages and Officers' Compensation Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table] Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table] Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Condensed Balance Sheet [Table Text Block] Condensed Balance Sheet [Table Text Block] Condensed Cash Flow Statement [Table Text Block] Condensed Cash Flow Statement [Table Text Block] Condensed Income Statement [Table Text Block] Condensed Income Statement [Table Text Block] Schedule of Long-term Debt Instruments Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of calculation of basic and diluted earnings (loss) per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of financial instruments carried at fair value on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of expected amortization expense of the existing intangible assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Schedule of intangible assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule of Guarantor Obligations [Table] Schedule of Guarantor Obligations [Table] Restricted Stock Units Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Schedule of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Stock Options Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Segment Reporting, Policy [Policy Text Block] Segment Reporting, Policy [Policy Text Block] Senior Notes Senior Notes Senior Notes [Member] Senior Notes [Member] Series A Preferred Stock [Member] Series A Preferred Stock [Member] Share-based compensation Share-based Compensation Share-based Compensation [Abstract] Share-based Compensation [Abstract] Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Award vesting rights, percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Forfeited (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Grants in period (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Granted (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Restricted stock units outstanding, beginning of period (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Restricted stock units outstanding, end of period (shares) RSUs Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Restricted stock units outstanding, beginning of period (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Restricted stock units outstanding, end of period (usd per share) Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Vested (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Vested (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Expected dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected life (years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate EQUITY Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of shares authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Number of shares available for grant Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Additional Disclosures Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Exercisable, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Exercisable (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Exercisable (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Exercisable, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Options, exercises in period, intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Expired (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Outstanding, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Outstanding, Aggregate Intrinsic Value Options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Options outstanding Number of Shares Underlying Share Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Vested and Expected to vest, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Vested and Expected to vest (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Vested and Expected to vest (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Vested and Expected to Vest, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Plan modification, incremental compensation cost Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost Equity Award [Domain] Equity Award [Domain] Award Type Exercised (usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Expired (usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Forfeited (usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Share-based Compensation Award, Tranche One [Member] Share-based Compensation Award, Tranche One [Member] Share-based Compensation Award, Tranche Three [Member] Share-based Compensation Award, Tranche Three [Member] Share-based Compensation Award, Tranche Two [Member] Share-based Compensation Award, Tranche Two [Member] Outstanding at period start Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price Outstanding at period end EQUITY Shareholders' Equity and Share-based Payments [Text Block] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Beginning Balance, Common shares Shares, Outstanding Ending Balance, Common shares Significant Accounting Policies [Text Block] Significant Accounting Policies [Text Block] Class of Stock [Axis] Class of Stock [Axis] Equity Components [Axis] Equity Components [Axis] Statement Statement [Line Items] Statement of Cash Flows [Abstract] Statement of Financial Position [Abstract] Statement of Comprehensive Income [Abstract] Statement of Stockholders' Equity [Abstract] Scenario [Axis] Scenario [Axis] Statement Statement [Table] Stockholders' Equity Attributable to Parent Stockholders' Equity Attributable to Parent Stockholders' Equity Attributable to Parent TOTAL EQUITY Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Beginning Balance Ending Balance EQUITY Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Stockholders' Equity Note [Abstract] Exercise of warrants, shares Stock Issued During Period, Shares, Other Share-based compensation, net, shares Stock Issued During Period, Shares, Share-based Compensation, Gross Exercised options Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercised options Shares Exercise of warrants Stock Issued During Period, Value, Other Exercise of options Stock Issued During Period, Value, Stock Options Exercised Remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Subordinated notes of Consolidated CLOs Subordinated Debt [Member] Subordinated Debt Obligations Subordinated Debt Obligations [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Subsequent Event Subsequent Event [Member] Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events [Text Block] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Subsequent Event Type [Domain] Subsidiary Issuer [Member] Subsidiary Issuer [Member] SUPPLEMENTAL DISCLOSURE: Supplemental Cash Flow Information [Abstract] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Tax Period [Axis] Tax Period [Axis] Tax Period [Domain] Tax Period [Domain] Total Return Swap Total Return Swap [Member] Trade name Trade Names [Member] Types of Financial Instruments Financial Instruments [Domain] Treasury stock acquired, average cost per share Treasury Stock Acquired, Average Cost Per Share Treasury Stock Treasury Stock [Member] Treasury Stock [Abstract] Treasury Stock, Number of Shares and Restriction Disclosures [Abstract] Treasury stock retired Treasury Stock, Retired, Cost Method, Amount Treasury stock retired Treasury stock, shares Treasury Stock, Shares Treasury stock, shares Treasury stock, shares Repurchases of common stock, shares Treasury Stock, Shares, Acquired Repurchases of common stock, shares Treasury stock, shares retired Treasury Stock, Shares, Retired Treasury Stock, Value Treasury Stock, Value Treasury Stock, Value Repurchases of common shares Treasury Stock, Value, Acquired, Cost Method Repurchases of common shares Type of Adoption [Domain] Type of Adoption [Domain] Type of Arrangement and Non-arrangement Transactions Type of Arrangement and Non-arrangement Transactions [Axis] Unamortized Debt Issuance Expense Unamortized Debt Issuance Expense Net income/expense related to derivative instruments Unrealized Gain (Loss) on Derivatives Valuation Allowance, Deferred Tax Asset, Explanation of Change Valuation Allowances and Reserves, Period Increase (Decrease) Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Variable Interest Entities Variable Interest Entities [Axis] Net results of Consolidated Entities Variable Interest Entity, Measure of Activity, Income or Loss before Tax Net gain (loss) from activities of Consolidated Entities Variable Interest Entity, Measure of Activity, Operating Income or Loss Variable Interest Entity, Consolidated, Carrying Amount, Assets Variable Interest Entity, Consolidated, Carrying Amount, Assets Consolidated VIEs Variable Interest Entity Disclosure [Text Block] Maximum exposure to loss Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Consolidated Variable Interest Entities Variable Interest Entity [Line Items] Unconsolidated VIE, investment in Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Warrants Warrant [Member] Warrant Weighted-average shares - diluted Weighted Average Number of Shares Outstanding, Diluted Weighted Average Number of Shares Outstanding, Diluted Weighted-average number of shares outstanding - Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic Amendment Description Amendment Description Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Document [Domain] Document [Domain] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information, Document [Axis] Document Information, Document [Axis] Document Information [Line Items] Document Information [Line Items] Document Information [Table] Document Information [Table] Document Period End Date Document Period End Date Document Type Document Type Entity Central Index Key Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Current Reporting Status Entity Current Reporting Status Entity [Domain] Entity [Domain] Entity Entity Filer Category Entity Filer Category Entity Public Float Entity Public Float Entity Registrant Name Entity Registrant Name Entity Voluntary Filers Entity Voluntary Filers Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Legal Entity Legal Entity [Axis] Investment [Axis] Investment [Axis] Investment [Domain] Investment [Domain] ILLINOIS ILLINOIS NEW YORK NEW YORK