Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Schedule of Goodwill and Intangible Assets, Net Intangible Asset and Goodwill [Table Text Block] Non-cash lease expense Noncash Lease Expense Noncash lease expense. Weighted average common shares outstanding: Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Marketable debt securities, available-for-sale, net change, tax OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax Statistical Measurement [Domain] Statistical Measurement [Domain] Twinrock Holdings, LLC Twinrock Holdings, LLC [Member] Twinrock Holdings, LLC May 2, 2023 Repurchase Program May 2, 2023 Repurchase Program [Member] May 2, 2023 Repurchase Program Title of 12(b) Security Title of 12(b) Security Subsequent Event Subsequent Event [Member] Document Fiscal Year Focus Document Fiscal Year Focus Adjustment to Compensation, Amount Adjustment to Compensation Amount Allowance for loss sharing obligations Guarantor Obligations, Allowance For Loss Sharing Obligations Guarantor Obligations, Allowance For Loss Sharing Obligations Financial Instrument [Axis] Financial Instrument [Axis] Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Customer [Axis] Customer [Axis] Segment Reporting [Abstract] SARs liability interest accrual rates Stock Appreciation Rights Liability Interest Accrual Rate Interest accrual rate for the outstanding balance on the SARs liability. Schedule of Estimated Amortization Expense for Intangible Assets Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Common stock, $0.0001 par value: Authorized shares – 150,000,000; issued and outstanding shares – 37,871,003 and 38,422,993 at June 30, 2026 and December 31, 2025, respectively Common Stock, Value, Issued Taxes paid related to net share settlement of stock-based awards Payment, Tax Withholding, Share-Based Payment Arrangement Accrued bonuses and other employee related expenses Employee-related Liabilities, Current Advances and loans Increase Decrease In Advances And Loans Increase (Decrease) in advances and loans. Standby letters of credit, utilized amount Standby Letters Of Credit Amount Utilized Standby letters of credit amount utilized. Other Other Assets, Miscellaneous, Noncurrent Loss contingency accrual Loss Contingency Accrual Change in fair value of contingent consideration Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease) Guarantee obligations, maximum exposure Guarantor Obligations, Maximum Exposure, Undiscounted Line of Credit Line of Credit [Member] Restatement Determination Date Restatement Determination Date Marketable debt securities, available-for-sale, allowance for credit losses, current Debt Securities, Available-for-Sale, Allowance for Credit Loss, Current Deferred compensation and commissions Deferred compensation and commissions Deferred Compensation And Commissions Non Current Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements related to Rabbi Trust, deferred commissions payable and other commissions related obligations and SARs Liability. Issuance of common stock for unvested restricted stock awards (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Amendment Flag Amendment Flag Current liabilities: Current Liabilities, Current [Abstract] Average cost (in dollars per share) Shares Acquired, Average Cost Per Share Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Marketable Securities [Line Items] Marketable Securities [Line Items] Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Asset-backed securities (“ABS”) and other ABS and other Asset-Backed Securities [Member] 2013 Omnibus Equity Incentive Plan 2013 Omnibus Equity Award Plan [Member] 2013 Omnibus Equity Award Plan. Schedule of Net Change in Carrying Value of Assets Held in Rabbi Trust and Deferred Compensation Liability Net Change In Carrying Value Of Assets Held In Rabbi Trust And Deferred Compensation Obligation Table [Table Text Block] Net Change In Carrying Value Of Assets Held In Rabbi Trust And Deferred Compensation Obligation Table Issuance of common stock for stock settled deferred consideration Stock Issued During Period, Value, Acquisitions Related-Party Transactions Related Party Transactions Disclosure [Text Block] Commissions Payable Commissions Payable [Member] Commissions Payable. Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Other Assets [Table] Other Assets [Table] Other Assets [Table] Assets held in rabbi trust Investments Held In Rabbi Trust [Member] Investments Held In Rabbi Trust [Member] Property, Plant, and Equipment [Abstract] Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province Available for sale securities continuous unrealized loss position, gross unrealized loss, total Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss PEO Total Compensation Amount PEO Total Compensation Amount Common stock, par value (in dollars per share) Common stock share, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Financing fees Financing Fees [Member] Financing Fees [Member] Non-Current Liabilities, Noncurrent [Abstract] Nonvested shares at beginning (in shares) Nonvested shares at ending (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share Repurchase Program [Domain] Share Repurchase Program [Domain] Basic (in shares) Weighted average common shares outstanding (in shares) Weighted average common shares outstanding from above (in shares) Weighted Average Number of Shares Outstanding, Basic Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current Convertible note, measurement input Convertible Note, Measurement Input Convertible Note, Measurement Input Due after five years through ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Entity Address, City or Town Entity Address, City or Town Change in value for stock settled consideration Change In value Deferred Consideration Settled In Stock Change in value deferred consideration settled in stock. Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Relationship to Entity [Domain] Title and Position [Domain] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Vested shares (in shares) Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Class of Stock [Axis] Class of Stock [Axis] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Intangible assets, net book value Total Intangible Asset, Finite-Lived, after Accumulated Amortization Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Adjusted net income (loss) Net Income (Loss) Available to Common Stockholders, Basic Level 2 Fair Value, Inputs, Level 2 [Member] Intangible assets, accumulated amortization Intangible Asset, Finite-Lived, Accumulated Amortization Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Beneficial ownership percentage Beneficial Ownership Percentage The Company's Founder and Co-Chairman beneficial ownership percentage of the Company's issued and outstanding common stock. Total Revenues Revenue Benchmark [Member] Loss contingency, punitive damages vacated, value Loss Contingency, Punitive Damages Vacated, Value Loss Contingency, Punitive Damages Vacated, Value Percentage of amortized cost Percentage Of Amortized Cost Percentage Of Amortized Cost. Guarantee obligations Guarantor Obligations, Liquidation Proceeds, Percentage Subsequent Event Type [Axis] Subsequent Event Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Maximum payment deferral period for certain commissions payable Commission Payable Payment Deferral Period Maximum payment deferral period for certain commissions payable. New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Litigation Case [Axis] Litigation Case [Axis] Unpaid purchases of property and equipment Capital Expenditures Incurred but Not yet Paid Commissions receivable Commissions Receivable Net Current Commissions receivable current net of allowance for credit losses. Guarantor obligations, amount pledged Guarantor Obligations, Amount Pledged Guarantor Obligations, Amount Pledged Reorganization and Initial Public Offering Reorganization And Initial Public Offering Policy [Policy Text Block] Reorganization And Initial Public Offering Policy [Text Block] Increase in fair value of convertible notes Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) Weighted average common shares issued and outstanding (in shares) Weighted Average Number of Shares Issued, Basic Use of Estimates Use of Estimates, Policy [Policy Text Block] Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Axis] Total other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Schedule of Reconciliation of Contingent Consideration Measured at Fair Value on Recurring Basis Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Convertible notes Notes Receivable, Fair Value Disclosure Property and Equipment, Net Property, Plant, and Equipment [Text Block] Due after one year through five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Supplemental disclosures of noncash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Document Period End Date Document Period End Date Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash provided by (used in) investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Basic Earnings Per Share, Basic [Abstract] Weighted average contractual maturity Available For Sale Securities Weighted Average Maturity Available For Sale Securities Weighted Average Maturity Stockholders' Equity Equity [Text Block] Security Exchange Name Security Exchange Name Gross realized losses Debt Securities, Available-for-Sale, Realized Loss Securities, held-to-maturity Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Current Extinguishment of Debt, Type [Domain] Extinguishment of Debt, Type [Domain] Issuance of common stock for vesting of restricted stock units (in shares) Stock Issued During Period Shares Restricted Stock Units Before Tax Settlement Stock issued during period, shares, restricted stock units, before tax settlement. Due after ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Accumulated other comprehensive (loss) income Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Initial common stock reserved (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Operating lease liabilities Operating Lease, Liability, Current Available for sale securities continuous unrealized loss position for 12 months or longer, fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Schedule of Property and Equipment, Net Property, Plant, and Equipment [Table Text Block] Statement of Comprehensive Income [Abstract] Marketable Securities [Table] Marketable Securities [Table] Earnings (Loss) per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Earnings (loss) per share: Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total liabilities Liabilities Trading Symbol Trading Symbol Discount rate Measurement Input, Discount Rate [Member] Geographical [Domain] Geographical [Domain] Deferred compensation liability Deferred Compensation Cash-Based Arrangements, Liability, Current and Noncurrent Purchase of property and equipment Payments to Acquire Property, Plant, and Equipment Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Company Selected Measure Name Company Selected Measure Name Advances and loans and commissions receivable allowance for credit loss Advances And Loans And Commissions Receivable Allowance For Credit Loss Advances and loans and commissions receivable allowance for credit loss. Number of offices (over) Number Of Offices Number of office. Purchases of marketable debt securities, available-for-sale Payments to Acquire Debt Securities, Available-for-Sale Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Business Combination, Contingent Consideration, Type [Axis] Business Combination, Contingent Consideration, Type [Axis] Net change, net of tax of $(146) and $(411) for the three and six months ended June 30, 2026 and $162 and $272 for the three and six months ended June 30, 2025, respectively OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Diluted Earnings Per Share, Diluted [Abstract] Accrued Expenses [Table] Accrued Expenses [Table] Accrued Expenses [Table] Credit Facility [Domain] Credit Facility [Domain] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Related Party Transactions [Abstract] Related Party Transactions [Abstract] Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Advances and loans, net Advances And Loans Net Current Advances And Loans Net Current Compensation Amount Outstanding Recovery Compensation Amount Dividends payable Dividends Payable, Current Individual: Individual [Axis] Diluted (in shares) Weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Line of Credit Facility [Table] Line of Credit Facility [Table] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Commercial paper Commercial Paper [Member] U.S. treasuries U.S. treasuries US Treasury Securities [Member] Dividends payable Dividends Payable Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Cost of services Cost of services Services Cost Variable commissions, compensation-related costs and other costs related to our revenue-generating activities. Schedule of Outstanding Awards Under 2013 Omnibus Equity Incentive Plan Schedule of Share based Compensation Restricted Stock Awards, RSUs, Unrecognized Stock Based Compensation, Weighted Average Grant Date Fair Value per Share and Weighted Average Remaining Vesting Period [Table Text Block] Schedule of share based compensation restricted stock awards, RSUs, unrecognized stock based compensation, weighted average grant date fair value per share and weighted average remaining vesting period. ESPP discount rate Share-Based Compensation Arrangement by Share-Based Payment Award, Discount from Market Price, Purchase Date Award Timing Predetermined Award Timing Predetermined [Flag] Restricted cash Restricted Cash, Current Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Measurement Input, Weighted Average Maturity Measurement Input, Weighted Average Term [Member] Measurement Input, Weighted Average Term Level 1 Fair Value, Inputs, Level 1 [Member] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Average daily cash balance, minimum requirement Debt Instrument, Covenant, Average Daily Cash Balance, Minimum Requirement Debt Instrument, Covenant, Average Daily Cash Balance, Minimum Requirement Add: Dilutive effect of RSUs, RSAs, PSUs & ESPP (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Nonvested at beginning (in dollars per share) Nonvested at ending (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Probability of achievement Probability of Achievement [Member] Probability of achievement All Executive Categories All Executive Categories [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] MMC Marcus And Millichap Company [Member] Marcus And Millichap Company [Member] Repurchases of common stock Stock Repurchased and Retired During Period, Value Operating lease liabilities Increase (Decrease) in Operating Lease Liability Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Unrecognized compensation expense Is expected to be recognized over a weighted average period (Years) Unrecognized Compensation Expense Is Expected To Be Recognized Over A Weighted Average Period (Years) Unrecognized compensation expense is expected to be recognized over a weighted-average period (years) Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Depreciation expense Depreciation Plan Name [Domain] Plan Name [Domain] Marketable debt securities, available-for-sale, amortized cost, noncurrent Debt Securities, Available-for-Sale, Amortized Cost, Noncurrent Operating lease right-of-use assets, net Operating lease right-of-use assets, net Operating Lease, Right-of-Use Asset Concentration Risk Type [Domain] Concentration Risk Type [Domain] Loan guarantee obligation Loan Guarantee Obligation, Noncurrent Loan Guarantee Obligation, Noncurrent Loan performance fee receivable Loan Performance Fee Receivable, Current Loan Performance Fee Receivable, Current Due in one year or less Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Income tax receivable Increase (Decrease) in Income Taxes Receivable Performance Units Performance Units [Member] Performance Units. Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Segment Information Segment Reporting [Text Block] Investments in Marketable Debt Securities, Available-for-Sale Investment in Debt and Equity Securities and Other Trading Assets [Text Block] Credit agreement, amount outstanding Long-Term Line of Credit Minimum Minimum [Member] Security deposits Deposits Assets, Noncurrent Chairman And Founder Chairman And Founder [Member] Chairman And Founder [Member] SARs frozen liability amount SARs liability Stock Appreciation Rights Liability Noncurrent Stock Appreciation Rights Liability Noncurrent Expiration Date Trading Arrangement Expiration Date Liabilities: Liabilities [Abstract] Effect of currency exchange rate changes on cash, cash equivalents, and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] ESPP Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan. Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Amortized Cost Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract] Thereafter Finite-Lived Intangible Asset, Expected Amortization, After Year Four Finite-Lived Intangible Asset, Expected Amortization, After Year Four Schedule of Fair Value Liabilities Measured On Recurring Basis Valuation Techniques Fair Value Liabilities Measured On Recurring Basis Valuation Techniques [Table Text Block] Fair Value Liabilities Measured On Recurring Basis Valuation Techniques Estimate of possible loss Loss Contingency, Estimate of Possible Loss Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Facility expenses Facility Expenses [Member] Facility Expenses Common stock, shares authorized (in shares) Common Stock, Shares Authorized Marketable debt securities, available-for-sale, allowance for credit losses, noncurrent Debt Securities, Available-for-Sale, Allowance for Credit Loss, Noncurrent Gross realized gains Debt Securities, Available-for-Sale, Realized Gain Assets held in rabbi trust Deferred Compensation Plan Assets Due after ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Exercise Price Award Exercise Price Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Segment Reporting [Line Items] Segment Reporting [Line Items] Stock repurchase program, authorized amount Share Repurchase Program, Authorized, Amount Employee notes receivable Nontrade Receivables, Current Unrecognized stock-based compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Proceeds from sales and maturities of marketable debt securities, available-for-sale Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale Document Quarterly Report Document Quarterly Report Contingent and deferred consideration, maximum undiscounted payment Business Combination Contingent Deferred Consideration Arrangements Range Of Outcomes Value High Business combination contingent deferred consideration arrangements range of outcomes value high. Option Indexed to Issuer's Equity, Type [Axis] Option Indexed to Issuer's Equity, Type [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Segments [Domain] Segments [Domain] Credit agreement, pledge percentage Credit Facility Pledge Percentage Credit Facility Pledge Percentage Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Other Other Deferred Compensation Arrangements, Liability, Classified, Noncurrent Equity Component [Domain] Equity Component [Domain] Marketable debt securities, available-for-sale, amortized cost, current Debt Securities, Available-for-Sale, Amortized Cost, Current PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Measurement Input Type [Domain] Measurement Input Type [Domain] Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Adoption Date Trading Arrangement Adoption Date Credit Facility Credit Facility [Member] Credit Facility Counterparty Name [Domain] Counterparty Name [Domain] Dividends Dividends payable Dividends, Common Stock, Cash Total stockholders’ equity Beginning Balance Ending Balance Equity, Attributable to Parent Other Assets [Line Items] Other Assets [Line Items] Other Assets [Line Items] Other income, net Other income Nonoperating Income (Expense) Customer Customer [Member] Customer Assets Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Current Other Liabilities, Current [Abstract] Amortized Cost Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Operating lease liability Operating Lease, Liability Intangible asset and goodwill impairment loss Intangible Asset, Including Goodwill, Impairment Loss Insider Trading Policies and Procedures [Line Items] Number of shares outstanding under compensation plan (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Interest income Interest Income, Operating Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Performance Shares Performance Shares [Member] Prepaid expenses and other assets, current Prepaid expenses and other assets, current Prepaid Expense and Other Assets, Current Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Deferred Compensation Liability Deferred Compensation Liability [Member] Deferred compensation liability. Deferred taxes, net Deferred Income Tax Expense (Benefit) Selling, general and administrative Net chargebacks earned Selling, General and Administrative Expense Selected Balance Sheet Data Supplemental Balance Sheet Disclosures [Text Block] Prepaid expenses Prepaid Expense, Noncurrent Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Antidilutive shares excluded from diluted earnings per common share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Restricted Stock Units Restricted Stock Units (RSUs) [Member] Schedule of Changes in Carrying Amount of Goodwill Goodwill [Table Text Block] Goodwill, gross carrying amount Goodwill, Gross Entity Central Index Key Entity Central Index Key Weighted Average Weighted Average [Member] Loss contingency, punitive damages awarded, value Loss Contingency, Punitive Damages Awarded, Value Loss Contingency, Punitive Damages Awarded, Value Less: accumulated depreciation and amortization Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization Granted, with vesting subject to performance targets (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period Subject To Performance Condition Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period Subject To Performance Condition Additional paid-in capital Additional Paid in Capital, Common Stock All Adjustments to Compensation All Adjustments to Compensation [Member] Equity [Abstract] Equity [Abstract] Advances and loans, net Advances And Loans Net Non Current Advances, typically in a form of forgivable loans and loans due from the Company's investment sales and financing professionals due or forgiven due after 1 year (or 1 business cycle). Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net cash used in operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Granted, with vesting subject to performance targets (in dollars per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period Subject To Performance Condition, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period Subject To Performance Condition, Weighted Average Grant Date Fair Value Issuances of employee notes receivable Payments to Acquire Notes Receivable Income Statement [Abstract] Income Statement [Abstract] Stockholders’ equity: Equity, Attributable to Parent [Abstract] Issuance of common stock pursuant to employee stock purchase plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Other significant noncash items: Segment Reporting, Other Significant Non-Cash Item [Abstract] Segment Reporting, Other Significant Non-Cash Item Operating expenses: Operating Expenses [Abstract] Deferred tax assets, net Deferred Income Tax Assets, Net Payments received on employee notes receivable Proceeds from Collection of Notes Receivable SARs Stock Appreciation Rights (SARs) [Member] Base spread on SARs liability variable rate Debt Instrument, Basis Spread on Variable Rate Commissions payable to investment sales and financing professionals Accrued Sales Commission, Current City Area Code City Area Code Payments for SARs Liability Payments for SARs Liability Payments (consisting of principal or interest or principal and interest) for stock appreciation rights liability. Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Geographic Concentration Risk Geographic Concentration Risk [Member] All Individuals All Individuals [Member] Subsequent Events Subsequent Events [Text Block] Dividends paid Payments of Dividends Name Forgone Recovery, Individual Name Schedule of Gross Realized Gains and Losses from Sale of Available for Sale Marketable Debt Securities Realized Gain (Loss) on Investments [Table Text Block] Cost not yet recognized, period for recognition Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Contingent consideration Business Combination, Contingent Consideration, Liability, Noncurrent Length of purchase intervals Share-Based Compensation Arrangement By Share-Based Payment Award, Length Of Purchase Intervals Share-Based Compensation Arrangement By Share-Based Payment Award, Length Of Purchase Intervals Earn-out period for contingent and deferred consideration Business Combination Contingent Deferred Consideration Arrangements Earn Out Period Business combination contingent deferred consideration arrangements earn out period. Other Other Accrued Liabilities, Noncurrent Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Weighted- Average Grant Date Fair Value Per Share Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Statement [Line Items] Statement [Line Items] Undistributed earnings of foreign subsidiary Undistributed Earnings of Foreign Subsidiaries Total assets Assets Interest expense Interest Expense, Operating Non-Current Other Liabilities, Noncurrent [Abstract] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Operating Segments Operating Segments [Member] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Interest expense Interest expense Interest Expense, Nonoperating Schedule of Stock-Based Compensation Expense Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Proceeds from issuance of shares pursuant to employee stock purchase plan Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Excluding Option Exercised Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Deferred compensation and commissions Deferred Compensation And Commissions Increase Decrease The increase (decrease) during the reporting period related to the obligation created for deferred compensation arrangements related to rabbi trust, deferred commission payable and other commission related obligations and SARs liability. Stock-Based Compensation Plans Share-Based Payment Arrangement [Text Block] Issuance of common stock pursuant to employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Other assets Increase (Decrease) in Other Operating Assets PEO PEO [Member] Beginning Balance (in shares) Ending Balance (in shares) Shares, Outstanding Reportable Segment Reportable Segment [Member] Reportable Segment Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Prepaid expenses Increase (Decrease) in Prepaid Expense Stock-based compensation Stock-based compensation Share-Based Payment Arrangement, Expense Repurchases of common stock (in shares) Stock Repurchased and Retired During Period, Shares Other liabilities, non-current Other liabilities Other Liabilities, Noncurrent Goodwill, net book value Beginning balance Ending balance Goodwill Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Deferred compensation liability Deferred Compensation Cash-Based Arrangements, Liability, Current Additions from acquisitions Goodwill, Acquired During Period Available-for-sale, securities number of unrealized loss positions Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions Goodwill and intangible assets, gross carrying amount, total Intangible Assets Gross Including Goodwill Gross carrying amount of finite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance. Standby letters of credit borrowing capacity Standby Letters Of Credit Sublimit Standby Letters Of Credit Sublimit Due in one year or less Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Subsequent Event Type [Domain] Subsequent Event Type [Domain] August 2, 2022 Repurchase Program August 2, 2022 Repurchase Program [Member] August 2, 2022 Repurchase Program Retained Earnings Retained Earnings [Member] Operating lease liabilities Operating Lease, Liability, Noncurrent Total operating expenses Operating Expenses Revolving Credit Facility Revolving Credit Facility [Member] Money market funds Money Market Funds [Member] Forfeited/canceled (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Change in net unrealized gains and losses OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Measurement Input, Accrued Interest Rates Measurement Input, Accrued Interest Rates [Member] Measurement Input, Accrued Interest Rates Corporate debt Corporate debt Corporate Debt Securities [Member] Diluted (in dollars per share) Diluted earnings (loss) per common share (in dollars per share) Earnings Per Share, Diluted Investments in convertible notes Investment In Convertible Note, Noncurrent Investment In Convertible Note, Noncurrent Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Average daily cash deposit, minimum requirement Debt Instrument, Covenant, Average Daily Cash Deposit, Minimum Requirement Debt Instrument, Covenant, Average Daily Cash Deposit, Minimum Requirement Treasury note term Treasury Note Rate Term Treasury note term rate used to determine SARs liability interest accrual rate. Shares withheld related to net share settlement of stock-based awards Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Non-Current Other Assets, Noncurrent [Abstract] Accrued bonuses and other employee related expenses Increase (Decrease) in Employee Related Liabilities Litigation Case [Domain] Litigation Case [Domain] Amortization expense Intangible Asset, Finite-Lived, Amortization Expense Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Measurement Input, Weighted Average Settlement Measurement Input, Weighted Average Settlement [Member] Measurement Input, Weighted Average Settlement MO Murrayfield, LLC MO Murrayfield, LLC [Member] MO Murrayfield, LLC Adjustments to reconcile net income (loss) to net cash used in operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Share-Based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Issuance of stock for the settlement of deferred consideration Issuance Of Stock For The Settlement Of Deferred Consideration Issuance Of Stock For The Settlement Of Deferred Consideration Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Total revenue Total revenue Revenue from Contract with Customer, Excluding Assessed Tax Property and equipment, net Property and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Credit agreement, unused capacity, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Financial Instruments [Domain] Financial Instruments [Domain] Schedule of Financial Information of Reporting Segment Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Customer, Extent of Reliance [Table Text Block] Other comprehensive (loss) income: Other Comprehensive Income (Loss), Tax [Abstract] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Loss contingency, actual damages awarded, value Loss Contingency, Actual Damages Awarded, Value Loss Contingency, Actual Damages Awarded, Value Prepaid expenses Prepaid Expense, Current April 30, 2026 Repurchase Program April 30, 2026 Repurchase Program [Member] April 30, 2026 Repurchase Program Line of credit facility bearing interest rate Line of Credit Facility Bearing Interest Rate Line of credit facility bearing interest rate. Dividends payable Dividends payable non current Dividends Payable Non Current Dividends payable non current. Preferred Stock Preferred Stock [Member] Issuance of common stock for stock settled deferred consideration (in shares) Stock Issued During Period, Shares, Acquisitions Segment Reporting [Table] Segment Reporting [Table] Common stock shares available for grant (in shares) Common stock shares available for issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Related Party Transaction [Table] Related Party Transaction [Table] Computer software and hardware equipment Computer Equipment [Member] Title and Position [Axis] Title and Position [Axis] Contingent consideration Business Combination, Contingent Consideration, Liability, Current Other Other Deferred Compensation Arrangements, Liability, Current Other Other assets, current Other Assets, Current Schedule of Amortized Cost, Allowance for Credit Losses, Gross Unrealized Gains/Losses in Accumulated Other Comprehensive Income/Loss and Fair Value of Marketable Securities, Available-for-Sale, by Type of Security Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Beginning balance Ending balance Contingent consideration Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Available for sale securities continuous unrealized loss position for less than 12 months, fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income (loss) Operating Income (Loss) Cost of services Service [Member] Current Fiscal Year End Date Current Fiscal Year End Date Dividend payable Dividends Payable, Non-cash Investing And Financing Activity Dividends Payable, Non-cash Investing And Financing Activity SARs liability Stock Appreciation Rights Liability Current Aggregate carrying value (includes principal and accrued interest) as of the balance sheet date of current deferred compensation associated with Stock Appreciation Rights payable to each participant in installments upon retirement or departure under terms of the agreement. Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Acquisitions, Goodwill and Other Intangible Assets Business Combination [Text Block] Payments made during the period Payments for deferred compensation and commissions Payments for deferred compensation and commissions. Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Options Equity Option [Member] Dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Schedule of Amortized Cost and Fair Value of Marketable Debt Securities, Available-for-Sale, by Contractual Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Loan performance fee receivable Loan Performance Fee Receivable, Noncurrent Loan Performance Fee Receivable, Noncurrent Schedule of Computation of Basic and Diluted Earnings Per Share, Including Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Earnings Per Share Basic and Diluted Including Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Tabular disclosure of the following: (1) entity's basic and diluted earnings per share (EPS) calculations, including as reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations, (2) securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic EPS in the future that were not included in the computation of the diluted EPS because to do so would increase EPS amount or decrease loss per share amount for the period presented, by anti antidilutive securities and (3) Antidilutive securities excluded from computation of EPS. Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Description of Business and Basis of Presentation Business Description and Basis of Presentation [Text Block] Deferred compensation and commissions Deferred compensation and commissions Deferred Compensation And Commissions Current Aggregate carrying value as of the balance sheet date of the non-current liabilities for deferred compensation arrangements related to Rabbi Trust, deferred commissions payable and other commissions related obligations and SARs Liability. Allowance for Credit Losses Debt Securities, Available-for-Sale, Allowance for Credit Loss Total cost of service Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Marketable debt securities, available-for-sale (amortized cost of $57,287 and $90,557 at June 30, 2026 and December 31, 2025, respectively, and $0 allowance for credit losses) Debt Securities, Available-for-Sale, Current Equity Components [Axis] Equity Components [Axis] Related Party Related Party [Member] Product and Service [Domain] Product and Service [Domain] Class of Stock [Line Items] Class of Stock [Line Items] Entity Interactive Data Current Entity Interactive Data Current Employee notes receivable Nontrade Receivables, Noncurrent Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Due after one year through five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Fair Value Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Accounts payable and accrued expenses Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current Reclassification adjustment for net gains and losses included in other income, net Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Entity Small Business Entity Small Business Comprehensive income (loss) Net and comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date Shares withheld related to net share settlement of stock-based awards (in shares) Number of common stock shares withheld to pay employee statutory withholding taxes (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Weighted average amortization intangible assets Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Subsequent Events [Abstract] Subsequent Events [Abstract] Payments of contingent consideration Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Security deposits Deposits Assets, Current Measurement Input, Weighted Average Discount Rate Measurement Input, Weighted Average Discount Rate [Member] Measurement Input, Weighted Average Discount Rate Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other liabilities, current Other liabilities Other Liabilities, Current U.S. government sponsored entities U.S. government sponsored entities US Government-sponsored Enterprises Debt Securities [Member] Other assets, non-current Other assets, non-current Other Assets, Noncurrent Document Type Document Type Fair value, assets, level 3 transfers, amount Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net 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] Foreign currency translation gain (loss), tax Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Fair Value as of Grant Date Award Grant Date Fair Value Principal payments on stock appreciation rights liability Payments On Stock Appreciation Rights Payments on stock appreciation rights. Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Stock repurchase program, remaining authorized repurchase amount Share Repurchase Program, Remaining Authorized, Amount Foreign currency translation (loss) gain, net of tax of $0 for each of the three and six months ended June 30, 2026 and 2025, respectively Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Arrangement Duration Trading Arrangement Duration Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Canada CANADA Reduction of accrued bonuses and other employee related expenses in settlement of employee notes receivable Increase (Decrease) In Employee Related Liabilities, Noncash Increase (Decrease) In Employee Related Liabilities, Noncash Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Income (loss) before provision (benefit) for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and contingencies Commitments and Contingencies Option Indexed to Issuer's Equity, Type [Domain] Option Indexed to Issuer's Equity, Type [Domain] Intangible assets, gross carrying amount Intangible Asset, Finite-Lived, before Accumulated Amortization Deferred compensation liability Deferred Compensation Cash-Based Arrangements, Liability, Classified, Noncurrent Property and equipment, gross Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Marketable debt securities, available-for-sale: OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Performance period Share-Based Compensation Arrangement By Share-Based Payment Award, Award Performance Period Share-Based Compensation Arrangement By Share-Based Payment Award, Award Performance Period 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Counterparty Name [Axis] Counterparty Name [Axis] Goodwill [Roll Forward] Goodwill [Roll Forward] Furniture, fixtures and equipment Furniture and Fixtures [Member] Liabilities and stockholders’ equity Liabilities and Equity [Abstract] Total liquidity, minimum requirement Debt Instrument, Covenant, Total Liquidity, Minimum Requirement Debt Instrument, Covenant, Total Liquidity, Minimum Requirement Schedule of Assets and liabilities at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Equity Award [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Commissions payable to investment sales and financing professionals Accrued Sales Commission Non Current Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions. Fair Value Measurements Fair Value Disclosures [Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Stock repurchase payable Stock Repurchase Payable, Current Stock Repurchase Payable, Current Supplemental disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One PEO Name PEO Name Geographical [Axis] Geographical [Axis] Income taxes paid, net Income Tax Paid, before Refund Received Other segment items Segment Reporting, Other Segment Item, Amount Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Principal payments on contingent consideration Payment for Contingent Consideration Liability, Financing Activities Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Contingent consideration, fair value measurement input Business Combination, Contingent Consideration, Liability, Measurement Input Liability Class [Axis] Liability Class [Axis] Marketable debt securities, available-for-sale (amortized cost of $135,819 and $145,570 at June 30, 2026 and December 31, 2025, respectively, and $0 allowance for credit losses) Debt Securities, Available-for-Sale, Noncurrent Available-for-sale, securities in unrealized loss positions, accumulated loss Available For Sale Securities Continuous Unrealized Loss Positions Accumulated Loss Available for sale securities continuous unrealized loss positions accumulated loss. Revenue Recognition Revenue [Policy Text Block] Cash, cash equivalents, and restricted cash (restricted cash of $1,750 and $11,253 at June 30, 2026 and December 31, 2025, respectively) Cash, cash equivalents, and restricted cash at beginning of period Cash, cash equivalents, and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Investments in convertible notes Investments In Convertible Notes [Member] Investments In Convertible Notes Fair value of deferred compensation plan assets Deferred Compensation Plan Percentage The amount the Company may, in its sole and absolute discretion, elect to withdraw at any time all or a portion of the amount by which the fair market value of the Deferred Compensation Plan's assets exceeds the stated percentage of the aggregate amount credited to the Deferred Compensation Plan's participants' accounts. Other Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Stock-based compensation Share-Based Payment Arrangement, Noncash Expense 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Securities, held-to-maturity Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Noncurrent Real estate brokerage commissions Real Estate Brokerage Commissions [Member] Real estate brokerage commissions. Customer [Domain] Customer [Domain] Description of Business Description Of Business [Policy Text Block] Description Of Business Policy [Text Block] Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Due after five years through ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Basic (in dollars per share) Basic earnings (loss) per common share (in dollars per share) Earnings Per Share, Basic Measurement Input Type [Axis] Measurement Input Type [Axis] Cash paid for stock repurchases Payments for Repurchase of Common Stock Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Extinguishment of Debt [Axis] Extinguishment of Debt [Axis] Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Number of reporting units Goodwill, Reporting Unit, Number Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Schedule of Available-for-sale Marketable Debt Securities in a Continuous Unrealized Loss Position Available For Sale Securities Continuous Unrealized Loss Positions Fair Value [Table Text Block] Available for sale securities continuous unrealized loss positions fair value. Common Stock Common Stock [Member] Fair Value Fair Value Marketable debt securities, available-for-sale: Debt Securities, Available-for-Sale Contingent consideration Business Combination, Contingent Consideration, Liability Operating lease cost Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Number of shares issued under compensation plan (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Cover [Abstract] Cover [Abstract] Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Concentration risk percentage Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Stock-based compensation APIC, Share-Based Payment Arrangement, Recognition and Exercise Schedule Of Accrued Expenses [Line Items] Schedule Of Accrued Expenses [Line Items] Schedule Of Accrued Expenses [Line Items] Impact of foreign currency translation Goodwill, Foreign Currency Translation, Gain (Loss) Equity Awards Adjustments Equity Awards Adjustments [Member] Net realized gains on marketable debt securities, available-for-sale Debt Securities, Available-for-Sale, Realized Gain (Loss) Total liabilities and stockholders’ equity Liabilities and Equity Goodwill and other intangible assets, net Goodwill and other intangible assets, net Intangible Asset, Including Goodwill, after Accumulated Amortization Employee Stock Option Share-Based Payment Arrangement, Option [Member] Decrease in the carrying value of the assets held in the rabbi trust Increase (Decrease) in Carrying Value of Assets Held In Rabbi Trust The amount of increase or decrease in the fair value of plan assets during the reporting period. Segments [Axis] Segments [Axis] Other liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Plan Name [Axis] Plan Name [Axis] Related and Nonrelated Parties [Domain] Related and Nonrelated Parties [Domain] Tabular List, Table Tabular List [Table Text Block] 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three Remainder of 2026 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Income tax receivable Income Taxes Receivable, Current Name Awards Close in Time to MNPI Disclosures, Individual Name Decrease in the net carrying value of the deferred compensation obligation Increase (Decrease) in Deferred Compensation Purchase of investments Payments to Acquire Investments Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Forfeited/canceled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Business Combination, Contingent Consideration, Type [Domain] Business Combination, Contingent Consideration, Type [Domain] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Sales and production support Sales and Production Support [Member] Sales and Production Support Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Preferred stock, $0.0001 par value: Authorized shares – 25,000,000; issued and outstanding shares – none at June 30, 2026 and December 31, 2025, respectively Preferred Stock, Value, Issued Stock repurchase payable Stock Repurchase Payable , Noncurrent Stock Repurchase Payable , Noncurrent Adjustment to Compensation: Adjustment to Compensation [Axis] TwinRock Holdings, LLC et al. v. Southside Ventures, LLC et al TwinRock Holdings, LLC et al. v. Southside Ventures, LLC et al [Member] TwinRock Holdings, LLC et al. v. Southside Ventures, LLC et al Share Repurchase Program [Axis] Share Repurchase Program [Axis] Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest paid during the period Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Other commitment amount Other Commitment Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Other non-cash items Other Noncash Income (Expense) Contingent consideration Contingent Consideration [Member] Contingent Consideration [Member] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Schedule of Deferred Compensation and Commissions Schedule of Deferred Compensation and Commissions [Table Text Block] Schedule of Deferred Compensation and Commissions [Table Text Block] Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Available for sale securities continuous unrealized loss position, fair value, total Debt Securities, Available-for-Sale, Unrealized Loss Position Name Trading Arrangement, Individual Name Expected life of cash flows Measurement Input, Expected Term [Member] Other revenue Other Revenues [Member] Other Revenues [Member] Deduct: Unvested RSAs (in shares) Weighted Average Number of Shares, Restricted Stock Credit loss expense Credit Loss Expense Reversal Amount of expense (reversal of expense) for expected credit loss. Current Prepaid Expense and Other Assets, Current [Abstract] Stock repurchased and retired Treasury Stock, Retired, Cost Method, Amount Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] RSUs, PSUs and RSAs Restricted Stock Units, Performance Stock Units, And Restricted Stock Awards [Member] Restricted Stock Units, Performance Stock Units, And Restricted Stock Awards Payout period Deferred Compensation Liability, Payout Period Deferred Compensation Liability, Payout Period Stock, Class of Stock [Table] Stock, Class of Stock [Table] Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Right-of-use assets obtained in exchange for operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Vested (in 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 Provision (benefit) for income taxes Income tax expense (benefit) Income Tax Expense (Benefit) Number of annual installments Number Of Annual Installments Number Of Annual Installments Award Timing Method Award Timing Method [Text Block] Consolidation Consolidation, Policy [Policy Text Block] Net decrease in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Numerator (Basic and Diluted): Net Income (Loss) Attributable to Parent [Abstract] Maximum unpaid loan amount for which guarantee obligations granted Maximum Unpaid Loan Amount For Which Guarantee Obligations Granted Maximum unpaid loan amount for which guarantee obligations granted. Investments in convertible notes Investment In Convertible Note, Current Investment In Convertible Note, Current Net income (loss) Net income (loss) Net Income (Loss) Attributable to Parent Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Discounted cash flow Valuation Technique, Discounted Cash Flow [Member] Location, Statement of Financial Position, Balance [Axis] Location, Statement of Financial Position, Balance [Axis] Statement [Table] Statement [Table] Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Loan guarantee obligation Loan Guarantee Obligation, Current Loan Guarantee Obligation, Current Restatement Determination Date: Restatement Determination Date [Axis] Measurement Input, Weighted Average Time To Settlement Measurement Input, Weighted Average Time To Settlement [Member] Measurement Input, Weighted Average Time To Settlement Commissions receivable Increase Decrease In Commissions Receivable The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from commissions from buyers/sellers, associated with underlying transactions that are classified as operating activities. Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Schedule of Other Assets Schedule of Other Assets [Table Text Block] Schedule of Other Liabilities Schedule Of Other Liabilities [Table Text Block] Schedule​ of other ​liabilities. Unrealized foreign exchange gains (losses) Unrealized Gain (Loss), Foreign Currency Transaction, before Tax Revenue: Revenues [Abstract] Stock repurchased and retired (in shares) Treasury Stock, Shares, Retired Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]