Net change in unrealized appreciation on private investments Unrealized Gain (Loss) on Investments Significant Accounting Policies Significant Accounting Policies [Text Block] Statistical Measurement [Domain] Statistical Measurement [Domain] Other Current Assets Other Current Assets [Member] Zarvona Energy Fund GP , L.P . Zarvona Energy Fund GP , L.P . [Domain] Zarvona Energy Fund GP , L.P . Realized Investment Gains (Losses) Realized Investment Gains (Losses) Restricted Stock Award, Forfeitures Restricted Stock Award, Forfeitures InvestCloud private investment InvestCloud private investment InvestCloud private investment Asset Class [Axis] Asset Class [Axis] Entity File Number Entity File Number Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Lease Obligation Incurred Lease Obligation Incurred Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Business Combination, Achieved in Stages, Description Business Combination, Achieved in Stages, Description Leases [Abstract] Leases [Abstract] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Purchase of treasury stock under employee stock plans (in shares) Treasury Stock, Shares, Acquired, Employee Stock Plan Treasury Stock, Shares, Acquired, Employee Stock Plan Interest Income, Interest-Earning Asset Interest Income, Interest-Earning Asset Balance at December 31, 2021 Balance at December 31, 2021 Balance at December 31, 2021 Goodwill [Line Items] Goodwill [Line Items] Basic (dollars per share) Earnings Per Share, Basic RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Purchase Price Allocation [Domain] Purchase Price Allocation [Domain] [Domain] for Purchase Price Allocation [Axis] Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer [Text Block] Realized gain on private investment Realized gain on private investment Realized gain on private investment Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income (Loss), Net of Tax Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Business Combination, Acquisition of Less than 100 Percent of Broadmark, Noncontontrolling Interest Business Combination, Acquisition of Less than 100 Percent of Broadmark, Noncontontrolling Interest Business Combination, Acquisition of Less than 100 Percent of Broadmark, Noncontontrolling Interest Dividends payable, date to be paid Dividends Payable, Date to be Paid Issuance of restricted stock, net of forfeitures, shares Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Investment Advisory Services [Member] Investment Advisory Services [Member] Investment Advisory Services [Member] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Carrying value - private investment, Tx Stock Exchange Carrying value - private investment, Tx Stock Exchange Carrying value - private investment, Tx Stock Exchange Information technology Communications and Information Technology Proceeds from Sale of Productive Assets Proceeds from Sale of Productive Assets Disaggregation of Revenue [Abstract] Disaggregation of Revenue [Abstract] Estimated Fair Value Total assets measured at fair value Debt Securities, Trading, and Equity Securities, FV-NI Antidilutive Securities Antidilutive Securities [Axis] Total Westwood Holdings Group, Inc. stockholders’ equity BALANCE BALANCE Equity, Attributable to Parent Total investments Total investments Total investments Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Expense related to mutual fund share incentive awards Share-based Payment Arrangement, Expense Share-Based Payment Arrangement, Expense Common stock, shares authorized Common Stock, Shares Authorized Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Current Assets: Assets, Current [Abstract] Total liabilities and stockholders' equity Liabilities and Equity Fair Value, Recurring Fair Value, Recurring [Member] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Scenario [Axis] Target [Axis] Target [Axis] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Lease square footage Lease square footage Lease square footage Net Income (Loss) Attributable to Noncontrolling Interest Net Income (Loss) Attributable to Noncontrolling Interest Segment, Expenditure, Addition to Long-Lived Assets Segment, Expenditure, Addition to Long-Lived Assets Accounting Policies [Abstract] Accounting Policies [Abstract] Intangible assets, net Finite-Lived Intangible Assets, Net Westwood Funds® Westwood Funds [Member] Westwood funds. Restricted Stock Restricted Shares Subject Only to a Service Condition Restricted Stock [Member] Unrealized Gain on Securities Unrealized Gain on Securities (Deprecated 2023) Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Status and Changes in Restricted Stock Grants that Subject to Service Condition Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment Proceeds from Sale, Debt Security, Trading, and Equity Security, FV-NI, Held-for-Investment Net change in unrealized appreciation on investments Trading Securities, Change in Unrealized Holding Gain (Loss) (Deprecated 2023) Investment Owned, at Fair Value Investment Owned, Fair Value Other Assets Other Assets [Member] Effect of currency rate changes on cash Effect of Exchange Rate on Cash and Cash Equivalents (Deprecated 2022) Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies. Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Noncontrolling Interest, Increase from Business Combination Noncontrolling Interest, Increase from Business Combination Revenue Disaggregation by Geographic Location [Table Text Block] Revenue Disaggregation by Geographic Location [Table Text Block] [Table Text Block] for Revenue Disaggregation by Geographic Location [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] us-gaap_EquitySecuritiesMember [Member] us-gaap_EquitySecuritiesMember [Member] Exchange-traded bond funds Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Goodwill, Impairment Loss Goodwill, Impairment Loss Operating Segments Operating Segments [Member] Schedule Of Variable Interest Entities [Table] Variable Interest Entity [Table] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Private Wealth Advisory [Member] Private Wealth Advisory [Member] Private Wealth [Member] Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Treasury Stock [Text Block] Treasury Stock [Text Block] Mutual Fund Advisory [Member] Mutual Fund Advisory [Member] [Member] Mutual Fund Advisory [Member] [Member] Total Expense Recorded for Stock Based Compensation Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Operating Lease, Liability, Current Operating Lease, Liability, Current Document Fiscal Period Focus Document Fiscal Period Focus Income taxes payable Increase (Decrease) in Accrued Taxes Payable Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) Award Type Award Type [Axis] Legal Entity Legal Entity [Axis] Nonredeemable Noncontrolling Interest Nonredeemable Noncontrolling Interest Total assets Segment Assets Assets CASH FLOWS FROM INVESTING ACTIVITIES: Cash Provided by (Used in) Investing Activity, Continuing Operation [Abstract] Trading Symbol Trading Symbol Vested (dollars 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 Geographical [Domain] Geographical [Domain] Trust Fees [Member] Trust Fee [Member] Trust Fee [Member] Entity Address, City or Town Entity Address, City or Town Trust Trust [Member] Trust. Common Trust Funds Common Trust Funds [Member] Common trust funds. Advisory Segment Goodwill Advisory Segment Goodwill Advisory Segment Goodwill Statement of Income Location, Balance Statement of Income Location, Balance [Domain] Private capital investment funds Private Equity Funds [Member] Severance Costs Severance Costs Business Combination, Consideration Transferred Business Combination, Consideration Transferred Employee Benefit and Share-based Payment Arrangement, Noncash Expense [Abstract] Employee Benefit and Share-Based Payment Arrangement, Noncash Expense [Abstract] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Consolidation, Variable Interest Entity, Policy [Policy Text Block] Consolidation, Variable Interest Entity, Policy [Policy Text Block] Payments to Acquire Intangible Assets Payments to Acquire Intangible Assets Dividends declared per share (dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Schedule Of Available For Sale Securities [Line Items] Debt Securities, Available-for-Sale [Line Items] Revenue from Contract with Customer, Including Assessed Tax Revenue from Contract with Customer, Including Assessed Tax Level 2 Fair Value, Inputs, Level 2 [Member] Equity Method Investments Equity Method Investments Gain on sale of operations Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Investments under fair value measurement alternative Investments under fair value measurement alternative Investments under fair value measurement alternative Common stock, shares outstanding BALANCE, shares BALANCE, shares Common Stock, Shares, Outstanding Plan Name [Axis] Plan Name [Axis] Lease Contractual Term [Domain] Lease Contractual Term [Domain] Unobservable input - growth volatility - minimum Unobservable input - growth volatility - minimum Unobservable input - growth volatility - minimum Advisory Advisory [Member] Advisory. Disaggregation of Revenue [Table Text Block] Disaggregation of Revenue [Table Text Block] VIE Variable Interest Entity [Member] Variable interest entity. Equity investments Debt Securities, Trading CanadianEmployeeServiceAward [Member] CanadianEmployeeServiceAward [Member] CanadianEmployeeServiceAward [Member] Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Income taxes payable Accrued Income Taxes, Current United States [Member] UNITED STATES Change in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Cash Acquired in Excess of Payments to Acquire Business Cash Acquired in Excess of Payments to Acquire Business Private equity Private Equity Investments [Member] Private Equity Investments [Member] Retained Earnings [Member] Retained Earnings [Member] Restricted shares subject only to a service condition: Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Purchase Price Allocation [Axis] Purchase Price Allocation [Axis] Purchase Price Allocation [Axis] Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Provision for income taxes Income Tax Expense (Benefit) Members' Equity Attributable to Noncontrolling Interest Members' Equity Attributable to Noncontrolling Interest Variable Interest Entities Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] (Deprecated 2020) Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Noncontrolling Interest in Net Income (Loss) Other Noncontrolling Interests, Nonredeemable Noncontrolling Interest in Net Income (Loss) Other Noncontrolling Interests, Nonredeemable Share repurchase - openb market Share repurchase - open market Share repurchase - open market Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Zarvona Energy Fund II-A, L.P . Zarvona Energy Fund II-A, L.P . [Domain] Zarvona Energy Fund II-A, L.P . Property, Plant and Equipment Property, Plant and Equipment [Member] Dividends payable, date of record Dividends Payable, Date of Record Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Business Combination, Consideration Transferred, Equity Interest, Type [Axis] Business Combination, Consideration Transferred, Equity Interest, Type [Axis] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Other assets Increase (Decrease) in Other Current Assets Asset Management [Member] Asset Management [Member] Westwood Hospitality Fund I LLC [Member] Westwood Hospitality Fund I LLC [Member] Westwood Hospitality Fund I LLC [Member] Goodwill, Acquired During Period Goodwill, Acquired During Period Westwood funds Mutual Fund Administration And Distribution Expenses related to the administration, distribution and marketing of mutual funds. City Area Code City Area Code TXSE - private investment TXSE - private investment TXSE - private investment Payments to Acquire Businesses, Net of Cash Acquired Payments to Acquire Businesses, Net of Cash Acquired Accrued stock repurchases Accrued Stock Repurchases Accrued Stock Repurchases Nonvested restricted shares Non-vested, beginning balance, shares Non-vested, ending balance, shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Unobservable Measurement Input, Uncertainty, Description Unobservable Measurement Input, Uncertainty, Description General and administrative General and Administrative Expense Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Proceeds from Insurance Settlement, Investing Activities Proceeds from Insurance Settlement, Investing Activities Trust Segment Goodwill Trust Segment Goodwill Trust Segment Goodwill Goodwill, Period Increase (Decrease) Goodwill, Period Increase (Decrease) Long-term Investments Long-Term Investments Related Party Transactions [Abstract] Related Party Transactions [Abstract] Assets Under Management Assets under Management, Carrying Amount Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Unrealized gains (losses) on private investment - TXSE Unrealized gains (losses) on private investment - TXSE Unrealized gains (losses) on private investment - TXSE Tax Adjustments, Settlements, and Unusual Provisions Tax Adjustments, Settlements, and Unusual Provisions Fee revenues from Westwood VIEs Variable Interest Entity, Measure of Activity, Revenues Subsequent Event [Member] Subsequent Event [Member] Goodwill Goodwill WEBs - call option WEBs - call option WEBs - call option Investments carried at fair value, unrealized gain Investments carried at fair value, unrealized gain Investments carried at fair value, unrealized gain Depreciation Depreciation Gain (Loss) on Investments Gain (Loss) on Investments Money market funds Money Market Funds [Member] Lease Contractual Term [Axis] Lease Contractual Term [Axis] Business Combination, Separately Recognized Transactions, Expenses and Losses Recognized Business Combination, Separately Recognized Transactions, Expenses and Losses Recognized Equity Components Equity Components [Axis] Sublease Income Sublease Income DESCRIPTION OF THE BUSINESS Nature of Operations [Text Block] Share repurchase - open market average price Share repurchase - open market average price Share repurchase - open market average price Number of operating segments Number of Reportable Segments LONG-TERM INCENTIVE COMPENSATION Compensation and Employee Benefit Plans [Text Block] RouAssetsAndLeaseLiabilityRemeasurementAdjustment RouAssetsAndLeaseLiabilityRemeasurementAdjustment RouAssetsAndLeaseLiabilityRemeasurementAdjustment Carrying value - private investment Carrying value - private investment Carrying value - private investment VARIABLE INTEREST ENTITIES Variable Interest Entity Disclosure [Text Block] U.S. Government securities US Treasury and Government [Member] Entity Address, State or Province Entity Address, State or Province Operating Lease, Impairment Loss Operating Lease, Impairment Loss Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Dividends declared Dividends, Common Stock Salient MLP Total Return Fund, L.P. [Domain] Salient MLP Total Return Fund, L.P. [Domain] Salient MLP Total Return Fund, L.P. [Domain] Related Party Related and Nonrelated Parties [Domain] Liabilities, Current, Total Liabilities, Current Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document and entity information. Shares Issued, Shares, Share-based Payment Arrangement, Forfeited Shares Issued, Shares, Share-Based Payment Arrangement, Forfeited Business Combination, Separately Recognized Transaction, Acquisition-Related Cost, Incurred Business Combination, Separately Recognized Transaction, Acquisition-Related Cost, Incurred Vesting [Axis] Vesting [Axis] Computation of Basic and Diluted Shares Earnings Per Share Reconciliation [Abstract] Other assets Other Assets, Current Additional paid-in capital Additional Paid in Capital, Common Stock Entity Entity [Domain] Amortization Amortization Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Related Party Transaction, Expenses from Transactions with Related Party Related Party Transaction, Expenses from Transactions with Related Party (Deprecated 2023) Subsidiary, Ownership Percentage, Noncontrolling Owner Subsidiary, Ownership Percentage, Noncontrolling Owner Effective Income Tax Rate Reconciliation, Percent Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current CASH FLOWS FROM OPERATING ACTIVITIES: Cash Provided by (Used in) Operating Activity, Continuing Operation [Abstract] Plan Name [Domain] Plan Name [Domain] Trust performance-based Trust performance-based [Member] Trust performance-based Due from related party Due from Related Parties (Deprecated 2023) Remaining unrecognized compensation cost recognized over a remaining weighted average period Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Mutual Fund [Member] Mutual Fund [Member] Fiduciary and Trust [Member] Fiduciary and Trust [Member] Equity [Abstract] Equity [Abstract] Asset Acquisition, Contingent Consideration, Liability Asset Acquisition, Contingent Consideration, Liability SEGMENT REPORTING Segment Reporting Disclosure [Text Block] Goodwill [Table] Goodwill [Table] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Fair Value Inputs [Abstract] (Deprecated 2018-01-31) Fair Value Inputs [Abstract] (Deprecated 2018-01-31) Unobservable input - growth volatility - maximum Unobservable input - growth volatility - maximum Unobservable input - growth volatility - maximum Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Amortization of intangible assets Amortization of Intangible Assets Deferred income taxes Deferred Income Tax Assets, Net Stock Repurchased During Period, Value Stock Repurchased During Period, Value Unobservable input - revenue retention volatility - minimum Unobservable input - revenue retention volatility - minimum Unobservable input - revenue retention volatility - minimum Share repurchase - open market total amount Share repurchase - open market total amount Share repurchase - open market total amount Other Assets, Noncurrent Other Assets, Noncurrent Cost Debt Securities, Trading, Amortized Cost Entity Central Index Key Entity Central Index Key Other revenue Other revenue Other revenue Fund purchases of common stock Fund Purchases Of Common Stock Fund purchases of common stock. Total revenues Revenues Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Other Revenue Misc Services [Member] Other Revenue Misc Services [Member] Other Revenue Misc Services [Member] SUPPLEMENTAL CASH FLOW INFORMATION: Supplemental Cash Flow Elements [Abstract] Westwood International Advisors Inc Westwood International Advisors Inc [Member] Westwood International Advisors Inc. Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value DomesticEmployeeServiceAward [Member] DomesticEmployeeServiceAward [Member] DomesticEmployeeServiceAward [Member] Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Investment Balances Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] Segments [Axis] Segments [Axis] Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Remaining unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Share price Share Price Mutual Fund Share Incentive Awards Mutual Fund Share Incentive Awards [Member] Mutual Fund Share Incentive Awards Europe [Member] Europe [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Stock Repurchased and Retired During Period, Shares Stock Repurchased and Retired During Period, Shares Dividends Payable Non Current Dividends Payable Non Current Dividends payable non current. Investments in securities: Investments, Fair Value Disclosure [Abstract] Asset Acquisition, Consideration Transferred, Contingent Consideration Business Combination, Contingent Consideration, Liability, Fair Value by Fair Value Hierarchy Level [Extensible Enumeration] ASSETS Assets [Abstract] Vesting [Domain] Vesting [Domain] Forfeited (dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Earnings per share: Earnings Per Share, Basic and Diluted [Abstract] (Deprecated 2022) Restricted Shares Subject to Service and Performance Conditions Restricted Shares Subject To Service And Performance Conditions [Member] Restricted shares subject to service and performance conditions. Stockholders' Equity: Equity, Attributable to Parent [Abstract] Entity Address, Address Line One Entity Address, Address Line One Treasury Stock, Value, Acquired, Cost Method Treasury Stock, Value, Acquired, Cost Method AOCI Attributable to Parent [Member] AOCI Attributable to Parent [Member] Investments [Domain] Investments [Domain] Operating Lease, Liability, Noncurrent Operating Lease, Liability, Noncurrent Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Cost Equity Securities, FV-NI, Cost Entity Registrant Name Entity Registrant Name Exchange Traded Funds Exchange Traded Funds [Member] Leasehold Improvements, Gross Payments for Tenant Improvements Employee compensation and benefits Labor and Related Expense Granted (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Payments to Acquire Investments Payments to Acquire Investments Total expenses Costs and Expenses Forfeited (shares) Forfeited (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Related Party Transaction [Line Items] Related Party Transaction [Line Items] Document Quarterly Report Document Quarterly Report Unobservable input - revenue retention discount rate - maximum Unobservable input - revenue retention discount rate - maximum Unobservable input - revenue retention discount rate - maximum Counterparty Name [Domain] Counterparty Name [Domain] Investments, All Other Investments [Abstract] Investments, All Other Investments [Abstract] Unobservable input -book value multiple - weighted average Unobservable input -book value multiple - weighted average Unobservable input -book value multiple - weighted average Debt Securities, Trading, and Equity Securities, Unrealized Loss Debt Securities, Trading, and Equity Securities, Unrealized Loss Debt Securities, Trading, and Equity Securities, Unrealized Loss Investment Type [Axis] Investment Type [Axis] Related Party Related and Nonrelated Parties [Axis] Granted (dollars 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 Unobservable input - revenue retention volatility - weighted average Unobservable input - revenue retention volatility - weighted average Unobservable input - revenue retention volatility - weighted average Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax Unrealized gain (loss) on private investment - Ridgeline Unrealized gain (loss) on private investment - Ridgeline Unrealized gain (loss) on private investment - Ridgeline Payments to Acquire Businesses, Gross Payments to Acquire Businesses, Gross Accounts Receivable Accounts Receivable [Member] Gross Unrealized Gains Debt Securities, Trading, Unrealized Gain Total long-term assets Total long-term assets Total long-term assets Stockholders' Equity, Total Members' Equity Restricted Stock Subject Only To A Service Condition Policy [Text Block] Restricted Stock Subject Only To A Service Condition Policy [Text Block] Restricted stock subject only to a service condition. Equity Award Award Type [Domain] Amount at Risk Risk Of Loss The risk of loss on Investment in VIE. Institutional Institutional [Member] Institutional. treasury stock, value, acquired Treasury Stock, Value, Acquired, Cost Method, Employee Stock Plan Treasury Stock, Value, Acquired, Cost Method, Employee Stock Plan Noncontrolling Interest in Joint Ventures Noncontrolling Interest in Joint Ventures Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Other Income Other Income Canada CANADA Compensation and benefits payable Increase (Decrease) in Employee Related Liabilities stock repurchase program stock repurchase program stock repurchase program - authorization increase subsequent to financial statement date Schedule of Investments [Line Items] Schedule of Investments [Line Items] Equity funds Equity Funds [Member] Non-vested, beginning balance, (dollars per share) Non-vested, ending balance, (dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Increase (Decrease) Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Increase (Decrease) Weighted average shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] UCITS Fund Undertaking For Collective Investment In Transferable Securities [Member] Undertaking for collective investment in transferable securities. Asset Acquisition [Line Items] Asset Acquisition [Line Items] Equity Securities, FV-NI, Gain (Loss) [Abstract] Equity Securities, FV-NI, Gain (Loss) [Abstract] REVENUES: Revenues [Abstract] Gross Unrealized Gains Debt Securities, Trading, and Equity Securities, Unrealized Gain Debt Securities, Trading, and Equity Securities, Unrealized Gain APIC, Share-based Payment Arrangement, Increase for Cost Recognition APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Treasury stock, at cost – 3,063,118 and 2,986,692 shares, respectively Treasury Stock, Value Treasury Stock, Value Sales and marketing Selling and Marketing Expense Segment [Domain] Segments [Domain] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Corporate offices remaining lease terms Corporate offices remaining lease terms Corporate offices remaining lease terms Statement of Income Location, Balance Statement of Income Location, Balance [Axis] Performance Shares [Member] Performance Shares [Member] Unobservable input - revenue retention volatility - maximum Unobservable input - revenue retention volatility - maximum Unobservable input - revenue retention volatility - maximum INVESTMENTS Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Business Combination, Achieved in Stages, Preacquisition and Acquired Equity Interests in Acquiree, Percentage Business Combination, Achieved in Stages, Preacquisition and Acquired Equity Interests in Acquiree, Percentage Restricted Stock Award, Forfeitures, Dividends Restricted Stock Award, Forfeitures, Dividends Earnings Per Share, Policy [Policy Text Block] Earnings Per Share, Policy [Policy Text Block] Property and equipment, accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Goodwill, Measurement Period Adjustment Goodwill, Measurement Period Adjustment Total Total [Member] Total Schedule Of Available For Sale Securities [Table] Schedule of Available-for-Sale Securities [Table] (Deprecated 2023) Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax Revenue [Policy Text Block] Revenue [Policy Text Block] 0 Accrued Purchases Of Treasury Stock Accrued Purchases Of Treasury Stock Business Combination, Recognized Liability Assumed, Liability Business Combination, Recognized Liability Assumed, Liability Impairment of Intangible Assets (Excluding Goodwill) Impairment of Intangible Assets (Excluding Goodwill) stock repurchase authorization - subsequent event stock repurchase authorization - subsequent event stock repurchase authorization - authorization subsequent to financial statement date Common stock, $0.01 par value, authorized 25,000,000 shares, issued 12,580,572 and 12,337,758, respectively and outstanding 9,517,454 and 9,394,066, respectively Common Stock, Value, Issued Investments, at fair value (amortized cost of $21,516 and $19,923) Short-Term Investments Diluted (shares) Weighted average shares outstanding - diluted (shares) Weighted Average Number of Shares Outstanding, Diluted Commitments and contingencies Commitments and Contingencies Performance-based fees [Member] performance fee [Member] performance fee [Member] Investments Measured at NAV Fair Value Measured at Net Asset Value Per Share [Member] Investment carrying value - Vista Investment carrying value - Vista Investment carrying value - Vista Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Cost Method Investments Cost Method Investments (Deprecated 2023) Dilutive potential shares from unvested restricted shares (shares) Incremental Common Shares Attributable To Nonvested Restricted Shares Incremental common shares attributable to nonvested restricted shares. Investments carried at fair value, unrealized loss Investments carried at fair value, unrealized loss Investments carried at fair value, unrealized loss Noncontrolling Interest Noncontrolling Interest [Member] Other Revenue, Net Other Revenue, Net Other Revenue, Net Document Transition Report Document Transition Report Share Based Compensation Arrangement By Share Based Payment Award Available For Grant, Original Share Based Compensation Arrangement By Share Based Payment Award Available For Grant, Original Share Based Compensation Arrangement By Share Based Payment Award Available For Grant, Original Equity Method Investment, Ownership Percentage Equity Method Investment, Ownership Percentage Equity Component Equity Component [Domain] Document Period End Date Document Period End Date Income Tax Disclosure [Text Block] Income Tax Disclosure [Text Block] Geographic Distribution [Domain] Geographic Distribution [Domain] Payment for Contingent Consideration Liability, Financing Activities Payment for Contingent Consideration Liability, Financing Activities Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Schedule of Investments [Table] Schedule of Investments [Table] Stock Issued During Period, Value, Restricted Stock Award, Forfeitures Stock Issued During Period, Value, Restricted Stock Award, Forfeitures Scenario [Axis] Scenario [Axis] Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Equity, Including Portion Attributable to Noncontrolling Interest Treasury Stock Acquired, Average Cost Per Share Shares Acquired, Average Cost Per Share Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] EARNINGS PER SHARE Earnings Per Share [Text Block] Product and Service [Axis] Product and Service [Axis] Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax Variable Interest Entity, Consolidated, Assets, Noncurrent Variable Interest Entity, Consolidated, Assets, Noncurrent (Deprecated 2020) Amount of consolidated variable interest entity's (VIE) assets classified as noncurrent. Service period of mutual fund share incentive award Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period Debt Securities, Trading, Gain (Loss) [Abstract] Debt Securities, Trading, Gain (Loss) [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Net intersegment revenues Net Intersegment Revenues Net intersegment revenues. Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Payments to Acquire Property, Plant, and Equipment Asset Acquisition, Consideration Transferred Asset Acquisition, Consideration Transferred Assets, Current, Total Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Loss Contingency Accrual Loss Contingency Accrual Share Repurchase Program, Authorized, Amount Share Repurchase Program, Authorized, Amount Restricted stock returned for payment of taxes Payment, Tax Withholding, Share-Based Payment Arrangement Treasury Stock, Value, Acquired, Par Value Method Treasury Stock, Value, Acquired, Par Value Method Accrued liability Mutual Fund Incentive Award Liability Mutual fund incentive award liability. Asset Acquisition, Consideration Transferred, Contingent Consideration Asset Acquisition, Consideration Transferred, Contingent Consideration Land Subject to Ground Leases Land Subject to Ground Leases Liabilities, Current [Abstract] Liabilities, Current [Abstract] Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Percentage Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Percentage Geographical [Axis] Geographical [Axis] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Other Liabilities, Fair Value Disclosure Other Liabilities, Fair Value Disclosure Level 1 Fair Value, Inputs, Level 1 [Member] Broadmark Asset Management LLC Broadmark Asset Management LLC [Domain] Broadmark Asset Management LLC Gain (Loss) on Disposition of Assets Gain (Loss) on Disposition of Assets Business Combination, Pro Forma Information, Pro Forma Revenue Business Combination, Pro Forma Information, Pro Forma Revenue Foreign Currency Transaction Gain (Loss), before Tax Gain (Loss), Foreign Currency Transaction, before Tax Schedule Of Related Party Transactions By Related Party [Table] Related Party Transaction [Table] Diluted (dollars per share) Earnings Per Share, Diluted Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Title of 12(b) Security Title of 12(b) Security Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Loans and Leases Receivable, Gross Loans and Leases Receivable, Gross Unobservable input - growth volatility - weighted average Unobservable input - growth volatility - weighted average Unobservable input - growth volatility - weighted average Business Combination Consideration Transferred Gross- Broadmark Business Combination Consideration Transferred Gross- Broadmark Business Combination Consideration Transferred Gross- Broadmark Earnings per share: Earnings Per Share [Abstract] Consolidation Items [Domain] Consolidation Items [Domain] Contract with Customer, Sales Channel [Domain] Contract with Customer, Sales Channel [Domain] Noncontrolling Interest, Ownership Percentage by Parent Subsidiary, Ownership Percentage, Parent Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Purchases of common stock with respect to awards granted Share Based Compensation Arrangement By Share Based Payment Award Available For Grant Share based awards available for future grants. Unobservable input - growth discount rate - minimum Unobservable input - growth discount rate - minimum Unobservable input - growth discount rate - minimum Equity Securities, FV-NI, Unrealized Loss Equity Securities, FV-NI, Unrealized Loss Asset Acquisition [Table] Asset Acquisition [Table] Canadian Plan Canadian Plan [Member] Canadian Plan. Adjustments to Additional Paid in Capital, Other Adjustments to Additional Paid in Capital, Other Investment carrying value - Ridgeline Investment carrying value - Ridgeline Investment carrying value - Ridgeline Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Axis] Acquired Goodwill - Total Acquired Goodwill - Total Acquired Goodwill - Total Payment for Contingent Consideration Liability, Operating Activities Payment for Contingent Consideration Liability, Operating Activities Fees earned from related party Revenue from Related Parties (Deprecated 2023) Unobservable input - revenue retention discount rate - minimum Unobservable input - revenue retention discount rate - minimum Unobservable input - revenue retention discount rate - minimum Cash paid during the period for income taxes Income Taxes Paid, Net Purchases of treasury stock, shares Purchases of treasury stock, shares Treasury Stock, Shares, Acquired Trust performance-based fees [Member] Trust performance-based fees [Member] Trust performance-based fees Compensation and benefits payable Employee-related Liabilities, Current Discrete tax expense from stock-based compensation Discrete tax expense from stock-based compensation Discrete tax expense from stock-based compensation STOCKHOLDERS' EQUITY Equity [Text Block] Investment Owned, Balance, Shares Investment Owned, Balance, Shares Net Income (Loss) Attributable to Parent Net Income (Loss) Attributable to Parent Net Income (Loss) Attributable to Parent Subsequent Event [Table] Subsequent Event [Table] Other Intersegment Eliminations [Member] Unobservable input - revenue retention discount rate - weighted average Unobservable input - revenue retention discount rate - weighted average Unobservable input - revenue retention discount rate - weighted average WEBs - preferred stock WEBs - preferred stock WEBs - preferred stock Other liabilities Increase (Decrease) in Other Operating Liabilities Goodwill Adjustments - Total Goodwill Adjustments - Total Goodwill Adjustments - Total Property and equipment, net of accumulated depreciation of $8,933 and $8,952 Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Target [Domain] Target [Domain] [Domain] for Target [Axis] Total investments under measurement alternative Total investments under measurement alternative Total investments under measurement alternative Return of capital Return of capital Return of capital - Amount of distribution in excess of tax-basis earnings and profits. Purchases of treasury stock Amount of shares purchased in the open market Payments for Repurchase of Common Stock Unobservable input -book value multiple - maximum Unobservable input -book value multiple - maximum Unobservable input -book value multiple - maximum Accounts receivable Increase (Decrease) in Accounts Receivable Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] Variable interest entities. Entity Current Reporting Status Entity Current Reporting Status Lessee, Operating Lease, Term of Contract Lessee, Operating Lease, Term of Contract Non-cash lease expense Non-cash lease expense Non-cash lease expense Investment Interest Rate Investment Interest Rate CASH FLOWS FROM FINANCING ACTIVITIES: Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract] Operating Income (Loss) Operating Income (Loss) Variable Interest Entity, Classification Consolidated Entities [Domain] Loss on Contract Termination Loss on Contract Termination Retained earnings Retained Earnings (Accumulated Deficit) Restricted Stock Subject Only to a Service Condition Restricted Stock Subject Only To Service Condition [Member] Restricted stock subject only to service condition. Restricted stock returned for payment of taxes, shares Restricted Stock, Shares Issued Net of Shares for Tax Withholdings Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Loans Receivable with Fixed Rates of Interest Loans Receivable with Fixed Rates of Interest Current Fiscal Year End Date Current Fiscal Year End Date Subsequent Event Type [Domain] Subsequent Event Type [Domain] Accrued dividends DividendsAccrued DividendsAccrued Proceeds from Insurance Settlement, Operating Activities Proceeds from Insurance Settlement, Operating Activities Shares remain available for issuance Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Professional services Professional Fees Statement [Table] Statement [Table] Other Noncontrolling Interests Other Noncontrolling Interests Restricted Stock Subject To Service And Performance Conditions Policy [Text Block] Restricted Stock Subject To Service And Performance Conditions Policy [Text Block] Restricted stock subject to service and performance conditions. Deferred income taxes Deferred Income Tax Expense (Benefit) Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cost Debt Securities, Trading, and Equity Securities, FV-NI, Cost Treasury stock, shares Treasury Stock, Shares (Deprecated 2023) Wealth Management Private Wealth [Member] Private wealth. Salient MLP Total Return TE Fund, L.P. Salient MLP Total Return TE Fund, L.P. [Domain] Salient MLP Total Return TE Fund, L.P. Estimated Fair Value Private Equity Securities, FV-NI, Current Net (purchases) sales of trading securities Increase (Decrease) in Debt Securities, Trading, and Equity Securities, FV-NI Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) Payments to acquire Broadmark, gross Payments to acquire Broadmark, gross Payments to acquire Broadmark, gross Anti-dilutive restricted shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Common Stock, Special Dividends, Per Share, Declared Common Stock, Special Dividends, Per Share, Declared Common Stock, Special Dividends, Per Share, Declared Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Amendment Flag Amendment Flag Total number of shares that may be issued under the stock based compensation Plan (including predecessor plans to the Plan) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] Treasury Stock, Common, Value Treasury Stock, Common, Value LEASES Lessee, Operating Leases [Text Block] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Unobservable input -book value multiple - minimum Unobservable input -book value multiple - minimum Unobservable input -book value multiple - minimum Business Combination, Acquiree's Revenue since Acquisition Date, Actual Business Combination, Acquiree's Revenue since Acquisition Date, Actual Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Basic (shares) Weighted average shares outstanding - basic (shares) Weighted Average Number of Shares Outstanding, Basic Share Repurchase Program, Remaining Authorized, Amount Share Repurchase Program, Remaining Authorized, Amount Payment for Contingent Consideration Liability, Investing Activities Payment for Contingent Consideration Liability, Investing Activities Computation of Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Loss Contingency, Receivable Loss Contingency, Receivable Subsequent Events [Abstract] Subsequent Events [Abstract] Segment Reporting [Abstract] Segment Reporting [Abstract] Carrying value - private investment funds Carrying value - private investment funds Carrying value - private investment funds Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Investment Income, Investment Expense Investment Income, Investment Expense Entity Tax Identification Number Entity Tax Identification Number EXPENSES: Costs and Expenses [Abstract] Scenario [Domain] Scenario [Domain] Gross Unrealized Gains Equity Securities, FV-NI, Unrealized Gain Business Combination Consideration Transferred - Broadmark Business Combination Consideration Transferred - Broadmark Business Combination Consideration Transferred - Broadmark Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Long-term Investments Carried at Fair Value Long-term Investments Carried at Fair Value Long-term Investments Carried at Fair Value DomesticServiceAndPerformanceAward [Member] DomesticServiceAndPerformanceAward [Member] DomesticServiceAndPerformanceAward [Member] Debt Securities, Trading, Unrealized Loss Debt Securities, Trading, Unrealized Loss Unrealized Gains (Losses) on Private Investments Unrealized Gains (Losses) on Private Investments Unrealized Gains (Losses) on Private Investments Variable Interest Entities Consolidated Entities [Axis] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (dollars per share) Common Stock, Par or Stated Value Per Share Unobservable input - growth discount rate - weighted average Unobservable input - growth discount rate - weighted average Unobservable input - growth discount rate - weighted average Common stock, shares issued Common Stock, Shares, Issued Investment Performance [Member] Investment Performance [Member] Treasury Stock [Member] Treasury Stock [Member] (Deprecated 2023) Income Taxes Receivable, Current Income Taxes Receivable, Current Geographic Distribution [Axis] Geographic Distribution [Axis] GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] Cash dividends paid Payments of Dividends Dividends payable Dividends Payable, Current Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Tax Foreign Currency Translation Adjustment, Description Foreign Currency Translation Adjustment, Description 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, Gain (Loss) Included in Earnings Subsequent Event, Description Subsequent Event, Description Fees unpaid from related party Accounts Receivable, Related Parties, Current (Deprecated 2023) SUBSEQUENT EVENTS Subsequent Events [Text Block] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Total Reportable Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Equity Securities Equity Securities [Member] Liabilities, Noncurrent Liabilities, Noncurrent Total liabilities Liabilities Antidilutive Securities, Name Antidilutive Securities, Name [Domain] Accrued purchase of property and equipment Capital Expenditures Incurred but Not yet Paid Net interest and dividend revenue Investment Income, Net Business Combination, Consideration Transferred, Equity Interest, Type [Domain] Business Combination, Consideration Transferred, Equity Interest, Type [Domain] Defined Benefit Plan, Plan Assets, Category [Domain] Defined Benefit Plan, Plan Assets, Category [Domain] Stock Repurchased During Period, Shares Stock Repurchased During Period, Shares Unobservable input - growth discount rate - maximum Unobservable input - growth discount rate - maximum Unobservable input - growth discount rate - maximum Business combination, consideration transferred for Broadmark Business combination, consideration transferred for Broadmark Business combination, consideration transferred for Broadmark Asset Class [Domain] Asset Class [Domain] Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Fair Value Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Fair Value Statement [Line Items] Statement [Line Items] Long-term Investments Carried at Fair Value using NAV Long-term Investments Carried at Fair Value using NAV Long-term Investments Carried at Fair Value using NAV Net fee revenues from external sources Revenue From External Sources Revenue From External Sources Consolidation Items [Axis] Consolidation Items [Axis] Cash and cash equivalents Cash and Cash Equivalent Restricted Stock, Value, Shares Issued Net of Tax Withholdings Restricted Stock, Value, Shares Issued Net of Tax Withholdings Counterparty Name [Axis] Counterparty Name [Axis] Subsequent Event [Line Items] Subsequent Event [Line Items] Common Stock [Member] Common Stock [Member] Vested (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Payment for Repurchases of Stock for Benefit Plan Payment for Repurchases of Stock for Benefit Plan Payment for Repurchases of Stock for Benefit Plan NET CHANGE IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Trust Trust for Benefit of Employees [Member]