75000 - Document - Document and Entity Information
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75010 - Statement - Consolidated Statements of Financial Condition (Unaudited)
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75020 - Statement - Consolidated Statements of Financial Condition (Parenthetical) (Unaudited)
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75030 - Statement - Consolidated Statements of Operations (Unaudited)
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75040 - Statement - Consolidated Statements of Comprehensive Income (Unaudited)
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75050 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical) (Unaudited)
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75060 - Statement - Consolidated Statements of Changes in Stockholders' Equity (Unaudited)
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75070 - Statement - Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (Unaudited)
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75080 - Statement - Consolidated Statements of Cash Flows (Unaudited)
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995455 - Disclosure - Organization and Principal Business Activity
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995465 - Disclosure - Significant Accounting Policies
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995475 - Disclosure - Regulatory Capital Requirements
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995485 - Disclosure - Fair Value Measurements
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995495 - Disclosure - Receivables from and Payables to Broker-dealers, Clearing organizations and Customers
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995505 - Disclosure - Acquisitions and Equity Investments
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995515 - Disclosure - Goodwill and Intangible Assets
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995525 - Disclosure - Income Taxes
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995535 - Disclosure - Stock-Based Compensation Plans
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995545 - Disclosure - Earnings Per Share
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995555 - Disclosure - Credit Agreement and Short-term Financing
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995565 - Disclosure - Leases
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995575 - Disclosure - Commitments and Contingencies
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995585 - Disclosure - Share Repurchase Programs
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995595 - Disclosure - Segment and Geographic Information
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995605 - Disclosure - Cash and Cash Equivalents and Restricted Cash
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995615 - Disclosure - Significant Accounting Policies (Policies)
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995625 - Disclosure - Significant Accounting Policies (Tables)
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995635 - Disclosure - Fair Value Measurements (Tables)
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995645 - Disclosure - Receivables from and Payables to Broker-dealers, Clearing Organizations and Customers (Tables)
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995655 - Disclosure - Acquisitions and Equity Investments (Tables)
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995665 - Disclosure - Goodwill and Intangible Assets (Tables)
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995675 - Disclosure - Stock-Based Compensation Plans (Tables)
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995685 - Disclosure - Earnings Per Share (Tables)
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995695 - Disclosure - Leases (Tables)
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995705 - Disclosure - Segment and Geographic Information (Tables)
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995715 - Disclosure - Cash and Cash Equivalents and Restricted Cash (Tables)
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995725 - Disclosure - Organization and Principal Business Activity - Additional Information (Detail)
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995735 - Disclosure - Significant Accounting Policies - Additional Information (Detail)
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995735 - Disclosure - Significant Accounting Policies - Additional Information (Detail) [Default]
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995745 - Disclosure - Significant Accounting Policies - Summary of Commission Revenue by Fee Type (Detail)
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995755 - Disclosure - Significant Accounting Policies - Summary of Information Services Revenue by Timing of Recognition (Detail)
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995765 - Disclosure - Significant Accounting Policies - Summary of Post-Trade Services Revenue by Timing of Recognition (Detail)
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995775 - Disclosure - Significant Accounting Policies - Summary of Technology Services Revenue by Timing of Recognition (Detail)
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995785 - Disclosure - Significant Accounting Policies - Summary of Revenue Recognized from Contract Liabilities and Remaining Balance (Detail)
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995795 - Disclosure - Significant Accounting Policies - Additional Information (Detail 1)
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995805 - Disclosure - Regulatory Capital Requirements - Additional Information (Detail)
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995815 - Disclosure - Fair Value Measurements - Valuation of Company's Assets and Liabilities Measured at Fair Value (Detail)
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995825 - Disclosure - Fair Value Measurements - Additional Information (Detail)
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995835 - Disclosure - Fair Value Measurements - Carrying Value of Financial Asset and Liability Not Measured at Fair Value (Detail)
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995845 - Disclosure - Fair Value Measurements - Summary of Foreign Currency Forward Contracts and Interest Rate Swaps (Detail)
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995855 - Disclosure - Fair Value Measurements - Summary of Realized and Unrealized Gains and Losses on Foreign Currency Forward Contracts and Interest Rate Swaps (Detail)
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995865 - Disclosure - Fair Value Measurements - Summary of Company's Investments (Detail)
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995875 - Disclosure - Fair Value Measurements - Summary of Companies Unrealized and Realized Gains and Losses on Investments (Detail)
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995885 - Disclosure - Fair Value Measurements - Summary of Fair Value of Investments Based upon Contractual Maturities (Detail)
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995895 - Disclosure - Fair Value Measurements - Summary of Fair Values and Unrealized Losses on Investments (Detail)
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995905 - Disclosure - Fair Value Measurements - Summary of Fair Values and Unrealized Losses on Investments (Detail) 2
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995915 - Disclosure - Receivables from and Payables to Broker-dealers, Clearing Organizations and Customers - Schedule of Receivables from and Payables to Broker-dealers, Clearing Organizations and Customers (Detail)
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995925 - Disclosure - Receivables from and Payables to Broker-dealers, Clearing Organizations and Customers - Additional Information (Detail)
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995935 - Disclosure - Acquisitions and Equity Investments - Additional Information (Detail)
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995945 - Disclosure - Acquisitions and Equity Investments - Summary of Purchase Price Allocation (Detail)
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995955 - Disclosure - Acquisitions and Equity Investments - Summary of Fair Value of Acquired Intangible Assets (Detail)
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995965 - Disclosure - Acquisitions and Equity Investments - Summary of the Changes in Redeemable Noncontrolling Interest (Detail)
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995975 - Disclosure - Goodwill and Intangible Assets - Additional Information (Detail)
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995985 - Disclosure - Goodwill and Intangible Assets - Summary of Changes in Goodwill and Intangible Assets with Indefinite Lives (Detail)
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995995 - Disclosure - Goodwill and Intangible Assets - Summary of Company's Intangible Assets (Detail)
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996005 - Disclosure - Income Taxes - Additional Information (Detail)
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996015 - Disclosure - Stock-Based Compensation Plans - Additional Information (Detail)
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996025 - Disclosure - Stock-Based Compensation Plans - Stock-Based Compensation Expense (Detail)
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996035 - Disclosure - Earnings Per Share - Basic and Diluted Weighted Average Shares Outstanding Used to Compute Earnings Per Share (Detail)
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996045 - Disclosure - Earnings Per Share - Additional Information (Detail)
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996055 - Disclosure - Credit Agreement and Short-term Financing - Additional Information (Detail)
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996065 - Disclosure - Leases - Additional Information (Detail)
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996075 - Disclosure - Leases - Schedule of Components of Operating Lease Expense (Detail)
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996085 - Disclosure - Leases - Summary of Weighted Average Remaining Lease Term and Discount Rate (Details)
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996095 - Disclosure - Leases - Schedule of Maturity of Lease Liabilities (Detail)
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996105 - Disclosure - Leases - Schedule of Maturity of Lease Liabilities (Detail) 2
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996115 - Disclosure - Commitments and Contingencies - Additional Information (Detail)
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996125 - Disclosure - Share Repurchase Programs - Additional Information (Detail)
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996135 - Disclosure - Segment and Geographic Information - Additional Information (Detail)
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996145 - Disclosure - Segment and Geographic Information - Summary of Revenue and Long-lived Assets (Detail)
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996155 - Disclosure - Cash and Cash Equivalents and Restricted Cash - Summary of Reconciliation of Cash and Cash Equivalents with Restricted or Segregated Cash (Detail)
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Equity Securities, FV-NI, Total
Equity Securities, FV-NI
Mutual funds held in rabbi trust
Disclosed trading
Disclosed trading.
Disclosed Trading
Cash collateral deposit
Cash Collateral for Derivative Deposit
Cash collateral for derivative deposit.
Software Development [Member]
Internally Developed Software [Member]
Software development costs [Member]
Proceeds from Short-Term Debt
Proceeds from Short-term Debt, Total
Proceeds from borrowings
Receivable from Broker-Dealer and Clearing Organization [Abstract]
Receivables from broker-dealers, clearing organizations and customers:
Concentration Risk Type [Axis]
Concentration Risk Type
Schedule of Revenues from External Customers and Long-Lived Assets [Table]
Schedule Of Revenues From External Customers And Long Lived Assets [Table]
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Preferred Stock, Shares Issued
Preferred stock, shares issued
Preferred Stock, Shares Issued, Total
Statement of Financial Position Location, Balance [Domain]
Balance Sheet Location
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
Valuation of Company's Assets and Liabilities Measured at Fair Value
Brokers and dealers.
Brokers And Dealers [Line Items]
Brokers And Dealers [Line Items]
Goodwill tax deductible amount
Business Combination, Goodwill, Expected Tax Deductible, Amount
Twelve Months or More, Gross unrealized losses
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer
Twelve Months or More, Gross unrealized losses
Equity [Abstract]
Entity Current Reporting Status
Entity Current Reporting Status
Operating Expenses [Abstract]
Expenses
Fair Value, Inputs, Level 2 [Member]
Level 2 [Member]
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingencies
Common Stock, Shares Authorized
Common stock, shares authorized
Fair value of remaining noncontrolling interests on acquisition date
Fair Value of Remaining Noncontrolling Interests on Acquisition Date Under Non Cash Consideration
Fair value of remaining noncontrolling interests on acquisition date under non cash consideration.
Finite-Lived Intangible Asset, Expected Amortization, Year Four
Estimated total amortization expense 2029
Accounts Receivable, after Allowance for Credit Loss
Accounts Receivable, after Allowance for Credit Loss, Total
Accounts receivable, net of allowance of $752 and $743 as of March 31, 2026 and December 31, 2025, respectively
Securities available-for-sale, tax expense (benefit)
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax
Investment, Policy [Policy Text Block]
Investments
Product and Service [Axis]
Product and Service
Increase (Decrease) in Receivable from Broker-Dealer and Clearing Organization
(Increase) in receivables from broker-dealers, clearing organizations and customers
Fair Value by Liability Class [Domain]
Fair Value by Liability Class
Document Fiscal Period Focus
Document Fiscal Period Focus
Debt Instrument, Interest Rate, Stated Percentage
Interest rate, stated percentage
Revenue from Contract with Customer [Abstract]
Commission revenue by fee type
Entity Shell Company
Entity Shell Company
Dividends, Common Stock, Cash
Cash dividend on common stock
Schedule of Gain (Loss) on Securities [Table]
Cash and Cash Equivalent
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value, Total
Cash and Cash Equivalents, at Carrying Value, Beginning Balance
Cash and Cash Equivalents, at Carrying Value, Ending Balance
Business Combination, Consideration Transferred and Preacquisition Equity Interest in Acquiree
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held before Combination, Total
Carrying value of previously held interest
Total purchase price
Common Stock, Shares, Issued
Common stock, shares issued
Common Stock, Shares, Issued, Total
Asset Class [Domain]
Asset Class
Statement [Table]
Statement [Table]
New York city division of taxation and finance.
New York City Division Of Taxation And Finance [Member]
New York City [Member]
Debt Instrument, Credit Spread Adjustment
Debt instrument, credit spread adjustment.
Credit spread adjustment
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Provisions for unrecognized tax benefits from current period
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Operating lease right-of-use assets obtained in exchange for operating lease liabilities
Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table Text Block]
Carrying Value of Financial Asset and Liability Not Measured at Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Weighted-average fair value each option granted
Cash consideration
Payments to Acquire Businesses, Gross
Cash consideration at closing
Statement [Line Items]
Statement [Line Items]
Business Combination [Domain]
Business Acquisition, Acquiree
Revenue from Contract with Customer [Policy Text Block]
Revenue Recognition
Entity Filer Category
Entity Filer Category
Liabilities and Equity
Total liabilities, redeemable noncontrolling interest and stockholders' equity
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral, Total
Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral
Foreign currency forward position
Stock-based and accrued incentive compensation relating to capitalized software development costs.
Stock-based and Accrued Incentive Compensation Relating to Capitalized Software Development Costs
Stock-based and accrued incentive compensation relating to capitalized software development costs
Increase (Decrease) in Employee Related Liabilities
Increase (Decrease) in Employee Related Liabilities, Total
(Decrease) in accrued employee compensation
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset
Accelerated Share Repurchases, Final Price Paid Per Share
Final price paid per share
Prepaid Expenses and Other Current Assets [Member]
Prepaid Expenses and Other Assets [Member]
Trade Names [Member]
Tradename - Finite Life [Member]
Shares repurchase program authorized additional, value
Stock repurchase program additional authorized repurchase amount1.
Stock Repurchase Program Additional Authorized Repurchase Amount1
Derivative Asset, Notional Amount
Fair value of notional
Fair value of the asset
Goodwill
Goodwill
Goodwill, Total
Balance at December 31, 2024
Balance at September 30, 2025
Other Noncash Income (Expense)
Other
Other Noncash Income (Expense), Total
Effective Income Tax Rate Reconciliation, Percent
Effective tax rate
Effective Income Tax Rate Reconciliation, Percent, Total
Effective income tax rate
Cash dividends on common stock
Payments of Ordinary Dividends
Payments of Ordinary Dividends, Total
Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block]
Summary of Foreign Currency Forward Contracts and Interest Rate Swaps
Lease cost.
Lease Cost [Table]
Lease Cost [Table]
Other [Member]
Other member.
Other [Member]
Geographical [Domain]
Geographical
Lessee operating lease liability payments due after year four.
Lessee Operating Lease Liability Payments Due After Year Four
2031 and thereafter
U.S. subsidiaries.
U S Subsidiaries [Member]
U.S. Subsidiaries
Securities failed to deliver broker dealers.
Securities Failed To Deliver Broker Dealers
Securities failed-to-deliver - broker-dealers and clearing organizations
Allowance for credit losses
Accounts Receivable, Allowance for Credit Loss
Allowance for accounts receivable
Accounts Receivable, Allowance for Credit Loss, Beginning Balance
Accounts Receivable, Allowance for Credit Loss, Ending Balance
Additional Paid in Capital, Common Stock
Additional paid-in capital
Additional Paid in Capital, Common Stock, Beginning Balance
Additional Paid in Capital, Common Stock, Ending Balance
Significant Accounting Policies [Text Block]
Significant Accounting Policies
Broker-Dealer, Payable to Other Broker-Dealer and Clearing Organization [Abstract]
Payables to broker-dealers, clearing organizations and customers:
Fair Value of Previously Held Interest on Acquisition Date Under Non Cash Consideration
Fair value of previously held interest on acquisition date under non cash consideration.
Fair value of previously held interest on acquisition date
Receivables from broker-dealers, clearing organizations and customers.
Receivables From Broker Dealers Clearing Organizations And Customers [Member]
Receivables from Broker-Dealers, Clearing Organizations and Customers [Member]
Finite-Lived Intangible Asset, Useful Life
Estimated life of intangible assets
Share Repurchase Program [Axis]
Share Repurchase Program
Schedule of Cash and Cash Equivalents [Table Text Block]
Summary of Reconciliation of Cash and Cash Equivalents with Restricted or Segregated Cash
Regulatory Services GMBH of Deutsche Borse Group.
Regulatory Services G M B H Of Deutsche Borse Group [Member]
Regulatory Services GmbH of Deutsche Borse Group [Member]
Maximum available borrowings to subsidiary under agreement.
Maximum Available Borrowings To Subsidiary Under Agreement
Maximum available borrowings to subsidiary under agreement
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Basic and Diluted Weighted Average Shares Outstanding Used to Compute Earnings Per Share
Investments Classified by Contractual Maturity Date [Table Text Block]
Summary of Fair Value of Investments Based upon Contractual Maturities
Earnings Per Share, Basic
Basic
Basic earnings per share
Earnings Per Share, Basic, Total
Accelerated Share Repurchase Program [Member]
Accelerated Share Repurchase Program [Member]
Accelerated share repurchase program.
Cumulative translation adjustment
Cumulative translation adjustment
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total
Revolving Credit Facility [Member]
Revolving Credit Facility [Member]
Finite-Lived Intangible Assets Acquired
Costs
(Increase) in accounts receivable
Increase (Decrease) in Accounts Receivable
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net income to net cash provided by operating activities:
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues From External Customers And Long Lived Assets [Line Items]
Share Repurchase Program [Domain]
Share Repurchase Program
Business Combination, Separately Recognized Transaction [Domain]
Securities failed to receive customers.
Securities Failed To Receive Customers
Securities failed-to-receive - customers
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
Provisions for unrecognized tax benefits from prior period
Equity, Attributable to Parent [Abstract]
Stockholders' equity
Entity Small Business
Entity Small Business
Retained Earnings (Accumulated Deficit)
Retained earnings
Retained Earnings (Accumulated Deficit), Total
Retained Earnings (Accumulated Deficit), Beginning Balance
Retained Earnings (Accumulated Deficit), Ending Balance
Geographic Concentration Risk [Member]
Geographic Concentration Risk [Member]
Employees and Directors [Member]
Employee and Directors Compensation Plan [Member]
Employee and directors compensation plan.
Accounts payable, accrued expenses and other liabilities
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities
Share-Based Payment Arrangement [Text Block]
Stock-Based Compensation Plans
Marketable securities amortized cost.
Marketable Securities Amortized Cost
Investments, Amortized cost
Occupancy [Member]
Occupancy [Member]
RFQ Hub Acquisition [Member]
RFQ-hub Acquisition
RFQ-hub Acquisition [Member]
Leases [Abstract]
Contract with Customer, Liability
Deferred revenues, ending balance
Deferred revenues, beginning balance
Contract with Customer, Liability, Total
Lessee, Lease, Description [Line Items]
Lessee Lease Description [Line Items]
Amendment Flag
Amendment Flag
Cash deposits with clearing organizations and broker-dealers
Cash Deposit
Cash deposit.
Product and Service [Domain]
Product and Service
Pragma [Member]
Pragma LLC and Pragma Financial Systems LLC [Member]
Pragma LLC and Pragma Financial Systems LLC.
Chief Executive Officer [Member]
ChiefExecutiveOfficer [Member]
Finance Lease, Interest Expense
Finance lease expense
Earnings Per Share, Policy [Policy Text Block]
Earnings Per Share
Liabilities and Equity [Abstract]
LIABILITIES AND STOCKHOLDERS' EQUITY
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Accounts Receivable [Policy Text Block]
Allowance for Credit Losses
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash (used in)/provided by operating activities
Payments to Develop Software
Capitalization of software development costs
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Common Stock [Member]
Common Stock Voting [Member]
Schedule of commission revenue by fee type.
Schedule Of Commission Revenue By Fee Type Table [Text Block]
Summary of Commission Revenue by Fee Type
Lessee, Operating Lease, Liability, to be Paid, Year Three
2029
Brokers and dealers.
Brokers And Dealers [Table]
Brokers And Dealers [Table]
Debt Securities, Available-for-Sale [Line Items]
Schedule Of Available For Sale Securities [Line Items]
Share-Based Payment Arrangement, Amount Capitalized
Share-based payment arrangement, amount capitalized
Portion at Fair Value Measurement [Member] [Default]
Portion at Fair Value Measurement [Member]
Entity Address, Address Line One
Entity Address, Address Line One
Deferred Income Taxes and Tax Credits
Deferred taxes
Deferred Income Taxes and Tax Credits, Total
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV
Earnings Per Share [Abstract]
Net income per common share
Income Tax, Policy [Policy Text Block]
Income Taxes
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Foreign Currency Translation and Forward Contracts
Two Thousand And Twenty Five Repurchase Program And Two Thousand And Twenty Four Repurchase Program [Member]
Two thousand and twenty five repurchase program and two thousand and twenty four repurchase program member.
2025 Repurchase Program and 2024 Repurchase Program [Member]
Goodwill and Intangible Assets Disclosure [Text Block]
Goodwill and Intangible Assets
Line of Credit Facility, Expiration Period
Period of credit agreement
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Acquired Cash
Business combination, provisional information, initial accounting incomplete, adjustment, acquired cash.
Acquired cash
Business Combination, Separately Recognized Transaction [Axis]
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Accounts Payable Accrued Expenses And Other Liabilities
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Accounts Payable Accrued Expenses And Other Liabilities
Accounts payable, accrued expenses and other liabilities
Statement of Financial Position Location, Balance [Axis]
Balance Sheet Location
Investment Type [Axis]
Investment Type
Schedule of technology services revenue by timing of recognition.
Schedule of Technology Services Revenue By Timing Of Recognition [Table Text Block]
Summary of Technology Services Revenue by Timing of Recognition
Operating Lease, Right-of-Use Asset
Operating lease right-of-use assets
Gross unrealized losses, Total
Debt Securities, Available-for-Sale, Unrealized Loss Position
Gross unrealized losses, Total
Gross unrealized losses, Total
Net realized gain
Realized gain on investments.
Realized Gain On Investments
Increase (Decrease) in Income Taxes
(Decrease)/increase in income and other tax liabilities
Net Income (Loss) Attributable to Noncontrolling Interest
Less: income attributable to redeemable noncontrolling interest
Net Income (Loss) Attributable to Noncontrolling Interest, Total
Less: income attributable to redeemable noncontrolling interest
Purchases
Payments to Acquire Debt Securities, Available-for-Sale
Unrealized net gain (loss) on securities available-for-sale, net of tax
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax, Total
Document Type
Document Type
Broker-Dealer, Payable to Other Broker-Dealer and Clearing Organization
Payables to broker-dealers, clearing organizations and customers
Total
Income Taxes Paid, Net
Income Taxes Paid, Net, Total
Cash paid/(refunded) for income taxes
Subsidiary, Ownership Percentage, Parent
Entity Central Index Key
Entity Central Index Key
Line of Credit Facility [Table]
Line Of Credit Facility [Table]
Equity, Class of Treasury Stock [Line Items]
Equity Class Of Treasury Stock [Line Items]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Net increase/(decrease) for the period
Subsequent Event Type [Domain]
Intangible Assets, Net (Including Goodwill)
Goodwill and intangible assets with indefinite lives
Intangible Assets, Net (Including Goodwill), Total
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Stock options and full value awards excluded from the computation of diluted earnings per share
Two thousand twenty one credit agreement.
Two Thousand Twenty One Credit Agreements [Member]
2021 Credit Agreement [Member]
Intangible assets
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles
Common stock, par value
Common Stock, Par or Stated Value Per Share
Liabilities [Abstract]
Liabilities
Amortization of operating lease right-of-use assets
Operating Lease, Right-of-Use Asset, Periodic Reduction
Repayments of Short-Term Debt, Total
Repayments of Short-Term Debt
Repayments of borrowings
Noncontrolling Interest, Increase from Subsidiary Equity Issuance
Issuance of noncontrolling interests
Goodwill [Line Items]
Goodwill [Line Items]
Loss on remeasurement of previously held interest
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Loss on Remeasurement
Business combination, provisional information, initial accounting incomplete, adjustment, loss on remeasurement.
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Prepaid Expenses and Other Assets
Business combination, provisional information, initial accounting incomplete, adjustment, prepaid expenses and other assets.
Prepaid expenses and other assets
Securities available-for-sale, Amortized Cost
Debt Securities, Available-for-Sale, Amortized Cost
Securities available-for-sale
Debt Securities, Available-for-Sale
Securities available-for-sale, Fair value
Realized Investment Gains (Losses), Total
Realized Investment Gains (Losses)
Realized gains/(losses)
Realized gain/(loss)
Debt Disclosure [Abstract]
Percentage of Total Shares Delivered Initially
Percentage of total shares delivered initially.
Percentage of shares delivered initially
Fair Value [Member]
Estimate of Fair Value Measurement [Member]
Marketable Securities
Investments, at fair value
Total
Investments, Fair value
Derivative, Notional Amount
Notional value
Uncommitted Collateralized Facility [Member]
Uncommitted collateralized facility.
Uncommitted Collateralized Facility [Member]
Ownership [Domain]
Current Fiscal Year End Date
Current Fiscal Year End Date
Business Combination, Intangible Asset, Acquired, Finite-Lived [Table Text Block]
Summary of Fair Value of Acquired Intangible Assets
Document Quarterly Report
Document Quarterly Report
Customer Relationships [Member]
Customer Relationships [Member]
Timing of Transfer of Good or Service [Axis]
Timing of Transfer of Good or Service
Entity Address, State or Province
Entity Address, State or Province
Internal Use Software, Policy [Policy Text Block]
Software Development Costs
Line of Credit Facility, Remaining Borrowing Capacity
Amount available under credit agreement
Remaining capacity
Schedule of information services revenue by timing of recognition.
Schedule Of Information Services Revenue By Timing Of Recognition Table [Text Block]
Summary of Information Services Revenue by Timing of Recognition
Business Combination [Table Text Block]
Summary of Purchase Price Allocation
Financial Liabilities Fair Value Disclosure
Financial liabilities not measured at fair value
Financial Liabilities Fair Value Disclosure, Total
Preferred Stock, Shares Outstanding
Preferred stock, shares outstanding
Preferred Stock, Shares Outstanding, Beginning Balance
Preferred Stock, Shares Outstanding, Ending Balance
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive income available for common stockholders
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total
Dilutive effect of stock options and full value awards
Changes of debt amount under the calculation of consolidated leverage ratio
Changes of Debt Amount Under Calculation of Consolidated Leverage Ratio
Changes of debt amount under calculation of consolidated leverage ratio.
Geographical [Axis]
Geographical
Noncontrolling Interest, Increase from Business Combination
Redeemable noncontrolling interests assumed through the 2025 RFQ-hub Acquisition
Accounts Receivable [Member]
Accounts Receivable, Net of Allowance [Member]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Fair Value of Previously Held Interest
Business combination, provisional information, initial accounting incomplete, adjustment, fair value of previously held interest.
Fair value of previously held interest on Acquisition Date
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Stock-Based Compensation Expense
Professional Fees
Professional and consulting fees
Exercise of stock options
Stock Issued During Period, Value, Stock Options Exercised
Interest income
Interest and Other Income
Performance Shares [Member]
Performance Based Share [Member]
Sublimit for letter of credit.
Sublimit For Letter Of Credit
Sub-limit for letter of credit
Proceeds from Sale and Maturity of Marketable Securities
Proceeds from the sales and maturities of securities available-for-sale
Proceeds from Sale and Maturity of Marketable Securities, Total
Subsequent Event [Member]
Subsequent Event [Member]
Cash segregated under federal regulations
Cash and Securities Segregated under Federal and Other Regulations
Cash and Securities Segregated under Federal and Other Regulations, Total
Cash segregated for regulatory purposes
Plan Two[Member]
Plan two.
Plan 2 [Member]
Antidilutive Securities [Axis]
Antidilutive Securities
Business Combination, Recognized Asset Acquired, Prepaid Expense and Other Asset, Current
Prepaid expenses and other assets
Supplemental cash flow information
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
Interest Expense, Debt
Interest expense on borrowings
Interest Expense, Debt, Total
Accounts payable, accrued expenses and other liabilities.
Accounts Payable Accrued Expenses And Other Liabilities [Member]
Accounts Payable, Accrued Expenses and Other Liabilities [Member]
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income/(Loss) [Member]
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions
Liability for unrecognized tax benefits from current period
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name
Significant accounting policies.
Significant Accounting Policies [Line Items]
Significant Accounting Policies [Line Items]
Cash [Member]
Treasury Stock, Common, Shares
Foreign currency forward position
Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral
Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral, Total
Contractual maturities accounts receivable
Accounts receivable contractual maturity.
Accounts Receivable Contractual Maturity
Business Combination, Consideration Transferred
Business Combination, Consideration Transferred, Total
Aggregate purchase price
Purchase price, net of acquired cash
Lessee, Operating Lease, Option to Extend
Operating lease, option to extend
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Purchase price of Acquired Cash
Business combination, provisional information, initial accounting incomplete, adjustment, purchase price of acquired cash.
Purchase price, net of acquired cash
Preferred Stock, Value, Issued
Preferred stock
Preferred Stock, Value, Issued, Total
Preferred Stock, Value, Issued, Beginning Balance
Preferred Stock, Value, Issued, Ending Balance
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived
Intangible assets
Minimum [Member]
Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Weighted-average grant date fair value per share
Class of Treasury Stock [Table]
Class Of Treasury Stock [Table]
Financial Instrument [Axis]
Financial Instrument
Financial Instruments Sold Not Yet Purchased Gross Realized Gains1
Financial instruments sold not yet purchased gross realized gains1.
Securities sold, not yet purchased gross realized gains
Amortization of Intangible Assets
Amortization expense associated with identifiable intangible assets
Amortization of Intangible Assets, Total
Fair Value, Inputs, Level 3 [Member]
Level 3 [Member]
Fair Value, Nonrecurring [Member]
Financial Assets and Liabilities not Measured [Member]
Liabilities, Fair Value Disclosure [Abstract]
Liabilities
Segment Reporting [Abstract]
Business Combination [Policy Text Block]
Business Combinations, Goodwill and Intangible Assets
Unrealized Gain (Loss) on Investments
Unrealized gains/(losses)
Unrealized gain/(loss)
Employees Stock Purchase Plan [Member]
Employees Stock Purchase Plan [Member]
Employees stock purchase plan.
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation [Abstract]
Cash and cash equivalents including restricted cash
Prepaid Expenses and Other Assets [Member]
Prepaid Expenses And Other Assets [Member]
Prepaid expenses and other assets.
RFQ Hub Holdings LLC [Member]
RFQ–hub Holdings LLC.
RFQ Hub Holdings LLC [Member]
Gain (Loss) on Securities [Line Items]
Commitments and Contingencies
Commitments and Contingencies (Note 13)
Lessee, Leases [Policy Text Block]
Leases
Technology services.
Technology Services [Member]
Technology Services [Member]
Accounts Receivable, Credit Loss Expense (Reversal)
Provision for credit losses
Operating Lease, Liability
Operating lease liabilities
Operating Lease, Liability, Total
Present value of lease liabilities
Carrying value of previously held interest
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred
Short-Term Debt
Short-Term Debt, Total
Borrowings
Overnight borrowing
Schedule of Goodwill [Table Text Block]
Summary of Changes in Goodwill and Intangible Assets with Indefinite Lives
Depreciation, Amortization and Accretion, Net
Depreciation and amortization
Depreciation, Amortization and Accretion, Net, Total
Two Thousand Twenty Three Amended and Restated Credit Agreement [Member]
Two thousand twenty three amended and restated credit agreement.
2023 Amended and Restated Credit Agreement [Member]
Net unrealized loss
Unrealized Loss On Investments
Unrealized loss on investments.
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark
Reissuance of treasury stock
Stock Issued During Period, Value, Treasury Stock Reissued
Exercise of stock options - cashless
Exercise of stock options cashless.
Exercise of Stock Options Cashless
Lessee, Lease, Description [Table]
Lessee Lease Description [Table]
Finance Lease, Weighted Average Discount Rate, Percent
Weighted average discount rate - finance leases
Forward Contracts [Member]
Forward Contracts [Member]
Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Effect of exchange rate changes on cash and cash equivalents
Effect of exchange rate changes on cash and cash equivalents
Equity Method Investee [Member]
Equity Method Investee [Member]
Other Variable Transaction
Other Variable Transaction
Other Variable Transaction
Capital Expenditures Incurred but Not yet Paid
Furniture, equipment, software and leasehold improvement additions included in accounts payable
Nonvoting Common Stock [Member]
Common Stock Non-Voting [Member]
Net income
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net income
Weighted Average Number of Shares Outstanding, Basic
Basic
Basic weighted average shares outstanding
Weighted Average Number of Shares Outstanding, Basic, Total
Goodwill, Acquired During Period
Goodwill from the 2025 RFQ-hub Acquisition
Stock options and full value awards.
Stock Options And Full Value Awards [Member]
Stock Options and Full Value Awards [Member]
Summary of Fair Values and Unrealized Losses on Investments
Gain (Loss) on Securities [Table Text Block]
Trading securities accumulated gross unrealized loss before tax.
Trading Securities Accumulated Gross Unrealized Loss Before Tax
Trading securities, Gross unrealized losses
Trading securities, Gross unrealized losses
Total purchase price
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Purchase Price
Business combination, provisional information, initial accounting incomplete, adjustment, purchase price.
Marketable securities within one year fair value.
Marketable Securities Within One Year Fair Value
Less than one year
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
Proportionate share in net earnings
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total
Twelve Months or More, Estimated Fair value
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
Long-Lived Tangible Asset [Domain]
Long-Lived Tangible Asset
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures
Number of stock option equity instruments granted during the period
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total
Other Payable to Broker-Dealer and Clearing Organization
Other
Income Tax Examination, Year under Examination
Income tax year under examination
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Stock-based compensation
APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total
Trading Investments [Member]
Trading Investments [Member]
Trading Investments [Member]
Equity, Attributable to Parent
Ending Balance
Beginning Balance
Total stockholders' equity
Purchases of investments
Payments to Acquire Investments
Payments to Acquire Investments, Total
Preferred Stock, Par or Stated Value Per Share
Preferred stock, par value
Lessee, Operating Lease, Existence of Option to Extend [true false]
Operating lease, existence of option to extend [true false]
Statement of Stockholders' Equity [Abstract]
Recorded investments
Equity Method Investments
Series A Preferred Stock [Member]
Series A Preferred Stock [Member]
Use of Estimates, Policy [Policy Text Block]
Use of Estimates
Treasury Stock - Common Stock Voting [Member]
Treasury Stock, Common [Member]
Gain (Loss), Foreign Currency Transaction, before Tax
Foreign Currency Transaction Gain (Loss), before Tax, Total
Foreign currency transaction (gains) losses
Foreign currency transaction losses
Entity Address, Address Line Two
Entity Address, Address Line Two
Fair Value Disclosures [Text Block]
Fair Value Measurements
Accelerated Share Repurchases, Initial Price Paid Per Share
Initial price per share
Sub-limit for swingline loans
Sub-limit for Swingline Loans
Sub-limit for swingline loans.
United States [Member]
UNITED STATES
Entity Incorporation, Date of Incorporation
Date of incorporation
Debt Instrument
Debt Instrument, Name [Domain]
Noncash Investing and Financing Items [Abstract]
Non-cash investing and financing activity
Other Restricted Cash Deposits
Other restricted cash deposits.
Other restricted cash deposits
Increase (Decrease) in Payable to Broker-Dealer and Clearing Organization
Increase in payables to broker-dealers, clearing organizations and customers
Equity in earnings of unconsolidated affiliate
Equity in earnings of unconsolidated affiliate
Income (Loss) from Equity Method Investments
Plan 1 [Member]
Plan One [Member]
Plan one.
Prepaid Expense and Other Assets
Prepaid expenses and other assets
Significant accounting policies.
Significant Accounting Policies [Table]
Significant Accounting Policies [Table]
Intangible Asset, Acquired, Finite-Lived [Line Items]
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Debt Marketable Securities Total
Debt marketable securities total.
Total
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]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date
Credit Facility [Axis]
Credit Facility
Equity Method Investment, Ownership Percentage
Ownership percentage
Treasury Stock, Value
Treasury Stock, Value, Total
Treasury Stock, Value, Beginning Balance
Treasury Stock, Value, Ending Balance
Treasury stock - Common stock voting, at cost, 5,698,972 shares and 5,344,419 shares as of March 31, 2026 and December 31, 2025, respectively
Related and Nonrelated Parties [Axis]
Securities failed to deliver customers.
Securities Failed To Deliver Customers
Securities failed-to-deliver - customers
Taxes Payable
Income and other tax liabilities
Taxes Payable, Total
Foreign Exchange Contract [Member]
Foreign Currency Forward Position [Member]
Entity Address, City or Town
Entity Address, City or Town
Stock Repurchased During Period, Shares
Shares repurchase program, shares
Two Thousand and Twenty Five Repurchase Program [Member]
Two thousand and twenty five repurchase program.
2025 Repurchase Program
Number of reportable segments
Number of Reportable Segments
Security Exchange Name
Security Exchange Name
Credit Facility [Domain]
Credit Facility
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Redeemable Noncontrolling Interest, Equity, Carrying Amount, Total
Redeemable noncontrolling interest
Balance at December 31, 2024
Balance at March 31, 2026
Settlement period of bond transaction.
Settlement Period Of Bond Transaction
Settlement days of bond transaction
Transaction costs.
Transaction Costs
Clearing costs
Counterparty Name [Axis]
Counterparty Name
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Income before income taxes
Concentration Risk Type [Domain]
Concentration Risk Type
Technology-Based Intangible Assets [Member]
Developed Technology [Member]
Commission revenue.
Commission Revenue [Member]
Commissions [Member]
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name
Realized loss on investments
Realized Loss on Investments
Realized loss on investments.
New York State Division of Taxation and Finance [Member]
New York State [Member]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Total
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning Balance
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance
Accounts Payable and Accrued Liabilities
Accounts payable, accrued expenses and other liabilities
Accounts Payable and Accrued Liabilities, Total
Interest Paid, Excluding Capitalized Interest, Operating Activity
Cash paid for interest
Measurement Basis [Axis]
Statistical Measurement [Domain]
Statistical Measurement
Debt Securities, Trading, Amortized Cost
Trading securities, Amortized cost
Trading securities, Amortized cost
Share-Based Payment Arrangement, Expense
Total stock-based compensation
Document Period End Date
Document Period End Date
Title and Position [Axis]
Title of Individual
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV
Accounting policies.
Accounting Policies [Table]
Accounting Policies [Table]
Number Of Revenue Streams
Number of revenue streams
Number of revenue streams.
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life
Useful Lives
Contract with customer liability revenue recognized including additions.
Contract With Customer Liability Revenue Recognized Including Additions
Revenue recognized for services performed during the period
Statement of Financial Position [Abstract]
Collateralized Agreements [Member]
Collateralized Debt Obligations [Member]
Antidilutive Security, Excluded EPS Calculation [Table]
Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table]
Class of Stock [Axis]
Class of Stock
Money market funds fair value.
Money Market Funds Fair Value Disclosure
Money market funds
Other Receivable from Broker-Dealer and Clearing Organization
Other
Increase (Decrease) in Debt Securities, Trading, and Equity Securities, FV-NI
Decrease in mutual funds held in rabbi trust
Debt Instrument, Unused Borrowing Capacity, Amount
Unused borrowing capacity, amount under agreement
Unrealized gain on investments
Unrealized Gain on Investments
Unrealized gain on investments.
Total liabilities
Liabilities
Schedule of marketable securities reconciliation.
Schedule Of Marketable Securities Reconciliation Table [Text Block]
Summary of Company's Investments
Financial Instruments [Domain]
Financial Instruments
Equity Investments and Consolidation
Equity Method Investments [Policy Text Block]
Lessee, Operating Lease, Liability, to be Paid, Year Two
2028
Restricted Stock [Member]
Restricted Stock [Member]
Foreign Currency Forwards [Member]
Foreign Exchange Forward [Member]
Finite-Lived Intangible Assets, Gross
Cost
Finite-Lived Intangible Assets, Gross, Total
Cash and Cash Equivalent [Table]
Schedule Of Cash And Cash Equivalents [Table]
Less than Twelve Months, Estimated Fair value
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Weighted Average Number of Shares Outstanding, Diluted
Diluted
Diluted weighted average shares outstanding
Securities Act File Number
Entity File Number
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
Net unrealized gain/(loss) on securities available-for- sale, net of tax of $82 and $(73), respectively
Marketing and advertising
Marketing and Advertising Expense
Marketing and Advertising Expense, Total
Mutual funds held in rabbi trust.
Mutual Funds Held In Rabbi Trust [Member]
Mutual Funds Held In Rabbi Trust [Member]
Cover [Abstract]
Information services.
Information Services [Member]
Information Services [Member]
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total
(Decrease) in accounts payable, accrued expenses and other liabilities
Transfers between Level 1, Level 2 and Level 3 securities
Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Between Level 1, Level 2 and Level 3 Securities
Fair value measurement with unobservable inputs reconciliation recurring basis asset transfers between Level 1, Level 2 and Level 3 securities.
Cash and Cash Equivalents Disclosure [Text Block]
Cash and Cash Equivalents and Restricted Cash
2024 Repurchase Program [Member]
Two Thousand And Twenty Four Repurchase Program [Member]
Two Thousand And Twenty Four Repurchase Program.
Investments [Domain]
Investments
Muni Brokers L L C
Muni Brokers L L C [Member]
MuniBrokers LLC.
MuniBrokers LLC [Member]
Trading Securities Fairvalue
Trading securities fairvalue.
Trading securities, Fair value
Revenue Benchmark [Member]
Total Revenue and Long-lived Assets [Member]
US Treasury Securities [Member]
U.S. Treasuries [Member]
Bank Overdrafts
Outstanding overdrafts payable
Timing of Transfer of Good or Service [Domain]
Timing of Transfer of Good or Service
Segment Reporting Disclosure [Text Block]
Segment and Geographic Information
General and Administrative Expense
General and administrative
General and Administrative Expense, Total
Marketable securities accumulated gross unrealized gain before tax.
Marketable Securities Accumulated Gross Unrealized Gain Before Tax
Investments, Gross unrealized gains
Investments, Gross unrealized gains
Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]
Receivables from brokers-dealers, clearing organizations and customers.
Receivables From Brokers Dealers Clearing Organizations And Customers
Receivables from broker-dealers, clearing organizations and customers
Receivables from broker-dealers, clearing organizations and customers, including $75,072 pledged as collateral as of March 31, 2026
Broker-Dealer Disclosure [Text Block]
Regulatory Capital Requirements
Standby Letters of Credit [Member]
Standby Letters of Credit [Member]
Available For Sale Securities On Credit Losses
Credit losses on available-for-sale securities
Available for sale securities on credit losses
Share Repurchase Program, Expiration Date
Share repurchase program, expiration date
Finite-Lived Intangible Assets, Net
Net carrying amount
Finite-Lived Intangible Assets, Net, Beginning Balance
Finite-Lived Intangible Assets, Net, Ending Balance
Broker-Dealer, Excess Net Capital, Alternative Standard
Aggregate net capital and financial resources in excess of required level
Broker-Dealer, Excess Net Capital, Alternative Standard, Total
Business Combination, Series of Individually Immaterial Business Combinations [Member]
Business Combinations [Member]
Securities sold, not yet purchased gross unrealized gains
Financial Instruments Sold Not Yet Purchased Gross Unrealized Gains1
Financial instruments sold not yet purchased gross unrealized gains1.
Property, Plant and Equipment, Useful Life
Estimated useful life of fixed assets
New Accounting Pronouncements, Policy [Policy Text Block]
Recent Accounting Pronouncements
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Schedule of Maturity of Lease Liabilities
Receivables from and Payables to Broker-dealers, Clearing Organizations and Customers
Due to and from Broker-Dealers and Clearing Organizations Disclosure [Text Block]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Cash Segregated under Federal Regulations [Member]
Cash segregated under federal regulations.
Cash Segregated Under Federal Regulations [Member]
Stock repurchase program commencement date.
Stock Repurchase Program Commencement Date
Commencement date
Ownership [Axis]
Contract with customer liability payments received.
Contract With Customer Liability Payments Received
Payments received in advance of services to be performed
Contract with customer liability foreign currency translation.
Contract With Customer Liability Foreign Currency Translation
Foreign Currency Translation
Foreign Currency Translation
Financial Liabilities Fair Value Disclosure [Abstract]
Financial liabilities not measured at fair value:
Cash deposits with clearing organizations and broker-dealers
Cash Deposits With Clearing Organizations And Broker Dealers
Cash Deposits With Clearing Organizations And Broker Dealers
Carrying Value [Member]
Reported Value Measurement [Member]
Lessee, Operating Lease, Term of Contract
Term of lease contract
Securities Reserve Deposit Required and Made
Securities reserve deposit
Common Stock, Shares, Outstanding
Common stock, shares outstanding
Common Stock, Shares, Outstanding, Beginning Balance
Common Stock, Shares, Outstanding, Ending Balance
Accelerated Share Repurchases, Delivery Of Shares
Accelerated share repurchases, delivery of shares.
Delivery of shares (in shares)
Revenue, Remaining Performance Obligation, Amount
Aggregate amount of transaction price allocated to remaining performance obligations
Document Transition Report
Document Transition Report
Operating Expenses
Total expenses
Lessee, Operating Leases [Text Block]
Leases
Operating lease cost for equipment.
Operating Lease Cost for Equipment
Operating lease cost - equipment
Payments for Repurchase of Common Stock
Repurchases of common stock
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Statement of Cash Flows [Abstract]
Assets, Fair Value Disclosure [Abstract]
Financial assets not measured at fair value:
Assets
Receivable From Equity Method Investeewhich is included within account receivable
Receivable From Equity Method Investee
Receivable from the equity method investee
Debt Securities, Trading
Trading securities
Trading securities, Fair value
Payments to Acquire Businesses, Net of Cash Acquired
Payments to Acquire Businesses, Net of Cash Acquired, Total
Acquisition, net of cash acquired
Interest Rate Swap [Member]
Interest Rate Swap [Member]
Interest Rate Swaps [Member]
Hosting service contract amortization period.
Hosting Service Contract Amortization Period
Hosting service contract, amortization period
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets [Line Items]
Earnings Per Share [Text Block]
Earnings Per Share
Share Repurchase Programs
Treasury Stock [Text Block]
Marketable securities accumulated gross unrealized loss before tax.
Marketable Securities Accumulated Gross Unrealized Loss Before Tax
Investments, Gross unrealized losses
Investments, Gross unrealized losses
Net income available for common stockholders
Operating Lease, Cost
Operating lease cost
Total operating lease cost
Other Investee [Member]
Other investee.
Intangible Assets, Net (Excluding Goodwill)
Intangible assets, net of accumulated amortization
Intangible Assets, Net (Excluding Goodwill), Total
Line of Credit Facility [Line Items]
Line Of Credit Facility [Line Items]
Assets [Abstract]
ASSETS
Income Tax Authority, Name [Axis]
Income Tax Authority, Name
Increase (Decrease) in Prepaid Expense and Other Assets
Increase (Decrease) in Prepaid Expense and Other Assets, Total
(Increase)/decrease in prepaid expenses and other assets
Repayments of Debt
Repayment of borrowings
Document Fiscal Year Focus
Document Fiscal Year Focus
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Expected time to recognize revenue for remaining performance obligation
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Cash flows from investing activities
Interest Expense, Nonoperating, Total
Interest Expense, Nonoperating
Interest expense
Interest expense
Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Fair Value
Fair value of previously held interest on Acquisition Date
Fair Value, off-Balance-Sheet Risk [Table]
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
Summary of Revenue Recognized from Contract Liabilities and Remaining Balance
Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Remeasurement, Loss
Loss on remeasurement of previously held interest
Loss on remeasurement of previously held interest
Loss on remeasurement of previously held interest
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Loss, Total
Indefinite-Lived Intangible Assets [Member]
Indefinite-lived Intangible Assets [Member]
Stock-based compensation
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture, Total
Finite-Lived Intangible Asset, Expected Amortization, Year One
Estimated total amortization expense 2026
Restricted cash deposits with clearing organizations and broker-dealers
Restricted Cash Deposit
Restricted cash deposit.
Fair Value Measurement, Policy [Policy Text Block]
Fair Value Measurement
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Proceeds from Stock Options Exercised
Exercise of stock options
Fair Value Disclosures [Abstract]
Investment in Debt and Equity Instruments and Cash and Cash Equivalent [Text Block]
Summary of Companies Unrealized and Realized Gains and Losses on Investments
Commitments and Contingencies Disclosure [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Year One
2027
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest, Total
Net income attributable to noncontrolling interests
Long-Term Line of Credit
Letter of credit outstanding
Long-term Line of Credit, Total
Overnight borrowing
Payment of contingent consideration
Payment for Contingent Consideration Liability, Financing Activities
Debt Instrument
Debt Instrument [Axis]
Derivative Instrument [Axis]
Schedule of Due to (from) Broker-Dealer and Clearing Organization [Table Text Block]
Schedule of Receivables from and Payables to Broker-dealers, Clearing Organizations and Customers
Fair Value of Assets Acquired
Fair value of assets acquired
Share-Based Payment Arrangement [Abstract]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Unrecognized compensation costs related to non-vested
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
Assets, Fair Value Disclosure
Financial assets not measured at fair value
Assets Fair Value Total
Assets fair value total
Concentration Risk, Percentage
Concentration Risk, Percentage
Redeemable noncontrolling interest equity expense
Redeemable Noncontrolling Interest Equity Expense
Redeemable noncontrolling interest equity expense.
Initial Settlement Payment Amount
Initial settlement payment amount.
Initial settlement payment amount
Net cash (used in) investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Finance Lease, Weighted Average Remaining Lease Term
Weighted average remaining lease term (in years) - finance leases
Title of 12(b) Security
Title of 12(b) Security
Schedule of Segment Reporting Information, by Segment [Table]
Schedule Of Segment Reporting Information By Segment [Table]
Employee-related Liabilities
Accrued employee compensation
Employee-related Liabilities, Total
Share Repurchase Program, Remaining Authorized, Amount
Share Repurchase program, remaining capacity
Related and Nonrelated Parties [Domain]
Income Tax Disclosure [Text Block]
Income Taxes
Distribution fees and unused minimum fees.
Distribution Fees And Unused Minimum Fees
Distribution fees and unused minimum fees
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year
2026
Technology and communications.
Technology and Communications [Member]
Technology and Communications [Member]
Interest Expense, Short-Term Borrowings
Interest expense on short-term debt
Interest Expense, Short-term Borrowings, Total
Line of credit facility additional borrowing capacity.
Line Of Credit Facility Additional Borrowing Capacity
Additional borrowings under credit agreement
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Changes in operating assets and liabilities:
Income Tax Disclosure [Abstract]
Fair Value, Recurring and Nonrecurring [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Goodwill
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Goodwill
Business combination, provisional information, initial accounting incomplete, adjustment, goodwill.
Acquisitions and Equity Investments
Business Combination [Text Block]
Unrecognized Tax Benefits
Unrecognized Tax Benefits, Ending Balance
Unrecognized Tax Benefits, Beginning Balance
Unrecognized tax benefits
Additional Paid-in Capital [Member]
Additional Paid-In Capital [Member]
UNITED KINGDOM
United Kingdom [Member]
Measurement Frequency [Domain]
Measurement Frequency
Share Repurchase Program, Authorized, Amount
Shares repurchase program authorized, value
Trading Symbol
Trading Symbol
Intangible Asset, Finite-Lived [Table]
Schedule Of Finite Lived Intangible Assets [Table]
Subsequent Event Type [Axis]
Broker-Dealer, Minimum Net Capital Required, Alternative Standard
Aggregate net capital and financial resources, minimum capital requirement
Broker-Dealer, Minimum Net Capital Required, Alternative Standard, Total
Line of Credit Facility, Description
Line of Credit Facility, Description
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Cash flows from financing activities
Lessee, Operating Lease, Liability, to be Paid
Total lease payments
Accounts receivable
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Receivable
Business combination, provisional information, initial accounting incomplete, adjustment, accounts receivable.
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Less: imputed interest
Equity Components [Axis]
Equity Components
Accounting policies.
Accounting Policies [Line Items]
Accounting Policies [Line Items]
Nonoperating Income (Expense)
Total other income (expense)
Equity Component [Domain]
Equity Component
Asset Class [Axis]
Asset Class
Receivable from Broker-Dealer and Clearing Organization
Total
Receivables from broker-dealers, clearing organizations and customers
Goodwill and Intangible Assets Disclosure [Abstract]
Business Acquisition
Business Combination [Axis]
U.S. broker-dealer subsidiaries.
U S Broker Dealer Subsidiaries [Member]
U.S. Broker-Dealer Subsidiaries
Derivative, Fair Value, Net
Fair value of the liability
Fair value of the asset/(liability)
Fair value
2023 Credit Agreement [Member]
2023 Credit Agreement [Member]
2023 Credit Agreement [Member]
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Fair value of Remaining Noncontrolling Interests
Business combination, provisional information, initial accounting incomplete, adjustment, fair value of remaining noncontrolling interests.
Fair value of remaining noncontrolling interests on Acquisition Date
Depreciation, Depletion and Amortization, Nonproduction
Depreciation and amortization
Depreciation, Depletion and Amortization, Nonproduction, Total
Receivables from and payables to broker- dealers, clearing organizations and customers.
Receivables From And Payables To Broker Dealers Clearing Organizations And Customers Policy [Text Block]
Receivables from and Payables to Broker - dealers, Clearing Organizations and Customers
Statement of Comprehensive Income [Abstract]
Open Trading - matched principal trading
Principal Transactions Revenue, Net
Principal Transactions Revenue, Net, Total
Maximum [Member]
Maximum [Member]
Number of institutional investor and broker-dealer firms
Number Of Institutional Investor And Broker Dealer Firms
Number of institutional investor and broker-dealer firms.
Cash Segregated under Federal Regulations [Member]
Cash segregated under federal and other regulations.
Cash Segregated Under Federal And Other Regulations [Member]
Liabilities, Fair Value Disclosure
Total liabilities
Statistical Measurement [Axis]
Statistical Measurement
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated amortization
Adjustments related to tax withholding (expense) benefit for share based compensation.
Adjustments Related To Tax Withholding Expense Benefit For Share Based Compensation
Withholding tax payments on Full Value Awards vesting and stock option exercises
Common Stock, Value, Issued
Common stock
Common Stock, Value, Issued, Total
Common Stock, Value, Issued, Beginning Balance
Common Stock, Value, Issued, Ending Balance
Property, Plant and Equipment [Member]
Furniture, equipment, software and leasehold improvement [Member]
Line of Credit Facility, Expiration Date
Expiration period of credit agreement
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Cash consideration
Business combination, provisional information, initial accounting incomplete, adjustment, cash consideration.
Cash consideration at closing
Borrowings [Member]
Borrowings [Member]
Cash and Cash Equivalents [Abstract]
Consolidation, Policy [Policy Text Block]
Basis of Presentation
Increase (decrease) in operating lease liabilities.
Increase Decrease In Operating Lease Liabilities
(Decrease) in operating lease liabilities
Cash and Cash Equivalents [Line Items]
Cash And Cash Equivalents [Line Items]
Operating lease cost - office space.
Operating Lease Cost for Office Space
Operating lease cost - office space
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]
Scott Pintoff [Member]
Scott Pintoff [Member]
Scott Pintoff.
Preferred Stock, Shares Authorized
Preferred stock, shares authorized
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest, Total
Less: comprehensive income attributable to redeemable noncontrolling interest
Less: comprehensive income attributable to redeemable noncontrolling interest
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class
Cash paid for acquisition, net of cash and cash equivalents acquired
Payments To Acquire Businesses Net Of Cash And Cash Equivalents Acquired Under Non - Cash Activities
Payments to acquire businesses, net of cash and cash equivalents acquired under non- cash activities.
Payables to broker-dealers, clearing organizations and customers [Member]
Payables To Broker Dealers Clearing Organizations And Customers [Member]
Payables to Broker-Dealers, Clearing Organizations and Customers [Member]
Investment Company, Reimbursable Excess Expense
Reimbursable support costs for equity method investee
Payment, Tax Withholding, Share-Based Payment Arrangement
Withholding tax payments on Full Value Awards vesting and stock option exercises
Estimated Fair value, Total
Gross unrealized losses, Total
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss
Business Combination [Table]
Schedule Of Business Acquisitions By Acquisition [Table]
Entity Registrant Name
Entity Registrant Name
Debt Disclosure [Text Block]
Credit Agreement and Short-term Financing
Finite-Lived Intangible Asset, Expected Amortization, Year Two
Estimated total amortization expense 2027
Business Combination, Contingent Consideration [Table Text Block]
Summary of the Change in the Company's Contingent Consideration Payable
Treasury Stock, Shares, Acquired
Share repurchases (in shares)
Other, net
Other Nonoperating Income (Expense)
Other Nonoperating Income (Expense), Total
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value
Fair value of remaining noncontrolling interests on Acquisition Date
Finite-Lived Intangible Asset, Expected Amortization, Year Three
Estimated total amortization expense 2028
Provision for income taxes
Provision for income taxes
Income Tax Expense (Benefit)
Debt Securities, Available-for-Sale, Unrealized Loss
Securities available-for-sale, Gross unrealized losses
Measurement Frequency [Axis]
Measurement Frequency
Trading Securities Amortized Cost
Trading securities amortized cost.
Trading securities, Amortized cost
Trading securities, Amortized cost
Stock Repurchased During Period, Value
Shares repurchase program, value
Repurchases of common stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Entity Common Stock, Shares Outstanding
Liability Class [Axis]
Liability Class
Schedule of post-trade services revenue by timing of recognition.
Schedule Of Post Trade Services Revenue By Timing Of Recognition Table [Text Block]
Summary of Post-Trade Services Revenue by Timing of Recognition
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated other comprehensive income/(loss)
Write-offs and other charges against the allowance for credit losses
Accounts Receivable, Allowance for Credit Loss, Writeoff
Payments to Acquire Property, Plant, and Equipment
Purchases of furniture, equipment and leasehold improvements
Payments to Acquire Property, Plant, and Equipment, Total
Gain (Loss) on Investments
Total gain/(loss)
Total gain/(loss)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Number of non-option equity instruments granted during the period
Escrow member.
Escrow [Member]
Escrow [Member]
Assets
Total assets
Schedule Of Income Taxes [Table]
Schedule of income taxes.
Schedule Of Income Taxes [Table]
Income Statement [Abstract]
Share-Based Payment Arrangement [Policy Text Block]
Stock-Based Compensation
Depreciation, Depletion, and Amortization [Policy Text Block]
Furniture, Equipment and Leasehold Improvements
Business Combination [Abstract]
Earnings Per Share, Diluted
Diluted
Diluted earnings per share
Earnings Per Share, Diluted, Total
Finite-Lived Intangible Asset, Expected Amortization, Year Five
Estimated total amortization expense 2030
Employee compensation plan.
Employee Compensation Plan [Member]
Employees [Member]
Title and Position [Domain]
Title of Individual
Securities Failed to Deliver Broker Dealers Pledged as Collateral
Securities failed to deliver broker dealers pledged as collateral.
Securities failed-to-deliver - broker-dealers and clearing organizations pledged as collateral
Receivables from broker-dealers, clearing organizations and customers, pledged as collateral
City Area Code
City Area Code
Trading securities accumulated gross unrealized gain before tax.
Trading Securities Accumulated Gross Unrealized Gain Before Tax
Trading securities, Gross unrealized gains
Tabular disclosure that summarizes the realized and unrealized gains and losses on foreign currency forward contracts.
Summary of Realized and Unrealized Gains and Losses on Foreign Currency Forward Contracts [Table Text Block]
Summary of Realized and Unrealized Gains and Losses on Foreign Currency Forward Contracts and Interest Rate Swaps
Schedule of Intangible Assets and Goodwill [Table Text Block]
Summary of Company's Intangible Assets
Business Combination [Line Items]
Business Acquisition [Line Items]
Variable transaction fees.
Variable Transaction Fees
Total variable transaction fees
Other Intangible Assets [Member]
Other Intangible Assets [Member]
Counterparty Name [Domain]
Counterparty Name
Derivative Instruments in Hedges, Assets, at Fair Value
Interest rate swaps
Variable Lease, Cost
Variable lease costs
Technology Service [Member]
Technology Services [Member]
Operating Lease, Weighted Average Remaining Lease Term
Weighted average remaining lease term (in years) - operating leases
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Liabilities assumed
Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed)
Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed), Total
Post-trade services.
Post Trade Services [Member]
Post-trade Services [Member]
Computer Software, Intangible Asset [Member]
Internally Developed Software [Member]
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents
Business Combination, Consideration Transferred, Equity Interest
Carrying value of previously held interest
Property, Plant and Equipment, Net
Furniture, equipment, leasehold improvements and capitalized software, net of accumulated depreciation and amortization
Long-lived assets
Property, Plant and Equipment, Net, Total
Property, Plant and Equipment, Net, Beginning Balance
Property, Plant and Equipment, Net, Ending Balance
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
End of period
Beginning of period
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Operating Income (Loss)
Operating income
Summary of Revenue and Long-lived Assets
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
Retained Earnings [Member]
Retained Earnings [Member]
Share-Based Payment Arrangement, Noncash Expense
Stock-based compensation expense
Share-based Payment Arrangement, Noncash Expense, Total
Securities failed to receive broker dealers.
Securities Failed To Receive Broker Dealers
Securities failed-to-receive - broker-dealers and clearing organizations
Schedule Of Pre Tax Income [Line Items]
Schedule Of Pre Tax Income [Line Items]
Schedule of pre-tax income.
Less than Twelve Months, Gross unrealized losses
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months
Less than Twelve Months, Gross unrealized losses
Operating Lease, Weighted Average Discount Rate, Percent
Weighted average discount rate - operating leases
Fair Value, Inputs, Level 1 [Member]
Level 1 [Member]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash (used in) financing activities
Lease, Cost [Table Text Block]
Schedule of Components of Operating Lease Expense
Developed Technology Rights [Member]
Developed Technology and Other Intangibles [Member]
Schedule of weighted average remaining lease term and discount rate.
Schedule Of Weighted Average Remaining Lease Term And Discount Rate Table [Text Block]
Summary of Weighted Average Remaining Lease Term and Discount Rate
Nonoperating Income (Expense) [Abstract]
Other income (expense)
Derivative Contract [Domain]
Goodwill [Table]
Schedule Of Goodwill [Table]
Lessee, operating lease and finance lease, term of contract.
Lessee, Operating Lease and Finance Lease, Term of Contract
Operating and finance leases for equipment
Business Combination, Recognized Asset Acquired, Receivable, Current
Accounts receivable
Lease cost line items.
Lease Cost [Line Items]
Lease Cost [Line Items]
Corporate Debt [Member]
Corporate Debt Securities [Member]
Debt Securities, Available-for-Sale [Table]
Entity Interactive Data Current
Entity Interactive Data Current
Fair Value Measurement [Domain]
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Cash flows from operating activities
Transferred over Time [Member]
Transferred over Time [Member]
Due to and from Broker-Dealers and Clearing Organizations [Abstract]
Common Stock, Dividends, Per Share, Declared
Cash dividends declared per common share
Line of Credit Facility, Current Borrowing Capacity
Revolving loans and letters of credit
Communications and Information Technology
Technology and communications
Communications and Information Technology, Total
Entity Tax Identification Number
Entity Tax Identification Number
Revenues [Abstract]
Revenues
Collateralized Borrowing Agreement [Member]
Collateralized Borrowing Agreement [Member]
Collateralized Borrowing Agreement Member
Proceeds from maturities and sales
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Organization and Principal Business Activity
Occupancy, Net
Occupancy
Redeemable Noncontrolling Interest [Table Text Block]
Summary of the Changes in Redeemable Noncontrolling Interest
US Government Bonds [Member]
US Government Securities [Member]
US Government Securities
Non Employee Directors and Consultants Compensation Plan [Member]
Non employee directors and consultants compensation plan.
Non-Employee Directors and Consultants [Member]
Income Tax Authority, Name [Domain]
Income Tax Authority, Name
Local Phone Number
Local Phone Number
Securities available-for-sale, Gross unrealized gains
Debt Securities, Available-for-Sale, Unrealized Gain
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average shares outstanding
Cash Acquired from Acquisition
Acquired cash
Accounting Policies [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax
Revenues
Revenues
Revenues
Broker-Dealer [Abstract]
Due in 1 - 5 years
Marketable securities after one through five years fair value.
Marketable Securities After One Through Five Years Fair Value
Lessee, Operating Lease, Liability, to be Paid, Year Four
2030
Cash and Cash Equivalents [Member]
Cash and Cash Equivalents [Member]
Class of Stock [Domain]
Class of Stock
Labor and Related Expense
Employee compensation and benefits
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
Shares available for grant under the stock incentive plan
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Weighted-average period over which cost is expected to be recognized
Transferred at Point in Time [Member]
Transferred at a Point in Time [Member]
Entity Emerging Growth Company
Entity Emerging Growth Company