Summary of Significant Accounting Policies | 2. Summary of Significant Accounting Policies Use of Estimates The Company’s condensed consolidated financial statements are prepared in conformity with U.S. GAAP, which require management to make estimates and assumptions regarding measurements including the fair value of trading assets and liabilities, goodwill and intangibles, compensation accruals, capitalized software, income tax, and other matters that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Accordingly, actual results could differ materially from those estimates. Earnings Per Share Earnings per share (“EPS”) is calculated on both a basic and diluted basis. Basic EPS excludes dilution and is calculated by dividing income available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted EPS is calculated by dividing the net income available for common stockholders by the diluted weighted average shares outstanding for that period. Diluted EPS includes the determinants of the basic EPS and, in addition, reflects the dilutive effect of shares of common stock estimated to be distributed in the future under the Company’s share based compensation plans. The Company grants restricted stock units (“RSUs”), which entitle recipients to receive nonforfeitable dividends during the vesting period on a basis equivalent to the dividends paid to holders of common stock. As a result, the unvested RSUs meet the definition of a participating security requiring the application of the two-class method. Under the two-class method, earnings available to common shareholders, including both distributed and undistributed, are allocated to each class of common stock and participating securities according to dividends declared and participating rights in undistributed earnings, which may cause diluted EPS to be more dilutive than the calculation using the treasury stock method. Cash and Cash Equivalents The Company considers cash equivalents as highly liquid investments with original maturities of less than three months when acquired. The Company maintains cash in bank deposit accounts that, at times, may exceed federally insured limits. Securities Borrowed and Securities Loaned The Company conducts securities borrowing and lending activities with external counterparties. In connection with these transactions, the Company receives or posts collateral. These transactions are collateralized by cash or securities. In accordance with substantially all of its stock borrow agreements, the Company is permitted to sell or repledge the securities received. Securities borrowed or loaned are recorded based on the amount of cash collateral advanced or received. The initial collateral advanced or received generally approximates or is greater than 102% of the fair value of the underlying securities borrowed or loaned. The Company monitors the fair value of securities borrowed and loaned, and delivers or obtains additional collateral as appropriate. Receivables and payables with the same counterparty are not offset in the condensed consolidated statements of financial condition. For these transactions, the interest received or paid by the Company is recorded gross on an accrual basis under interest and dividends income or interest and dividends expense in the condensed consolidated statements of comprehensive income. Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase In a repurchase agreement, securities sold under agreements to repurchase are treated as collateralized financing transactions and are recorded at contract value, plus accrued interest, which approximates fair value. It is the Company’s policy that its custodian takes possession of the underlying collateral securities with a fair value approximately equal to the principal amount of the repurchase transaction, including accrued interest. For reverse repurchase agreements, the Company typically requires delivery of collateral with a fair value approximately equal to the carrying value of the relevant assets in the condensed consolidated statements of financial condition. To ensure that the fair value of the underlying collateral remains sufficient, the collateral is valued daily with additional collateral obtained or excess collateral returned, as permitted under contractual provisions. The Company does not net securities purchased under agreements to resell transactions with securities sold under agreements to repurchase transactions entered into with the same counterparty. For these transactions, the interest received or paid by the Company is recorded gross on an accrual basis under interest and dividends income or interest and dividends expense in the condensed consolidated statements of comprehensive income. Receivables from/Payables to Broker-dealers and Clearing Organizations Amounts receivable from broker-dealers and clearing organizations may be restricted to the extent that they serve as deposits for securities sold, not yet purchased. At June 30, 2016 and December 31, 2015 , receivables from and payables to broker-dealers and clearing organizations primarily represent amounts due for unsettled trades, open equity in futures transactions, securities failed to deliver or failed to receive, deposits with clearing organizations or exchanges and balances due from or due to prime brokers in relation to the Company’s trading. The Company presents its balances, including outstanding principal balances on all credit facilities, on a net-by-counterparty basis within receivable from and payable to broker-dealers and clearing organizations when the criteria for offsetting are met. In the normal course of business, substantially all of the Company’s securities transactions, money balances, and security positions are transacted with several brokers. The Company is subject to credit risk to the extent any broker with whom it conducts business is unable to fulfill contractual obligations on its behalf. The Company monitors the financial condition of such brokers and does not anticipate any losses from these counterparties. Financial Instruments Owned Including Those Pledged as Collateral and Financial Instruments Sold, Not Yet Purchased The Company carries financial instruments owned, including those pledged as collateral, and financial instruments sold, not yet purchased at fair value. Gains and losses arising from financial instrument transactions are recorded net on a trade-date basis in trading income, net, in the condensed consolidated statements of comprehensive income. Fair Value Measurements The Company’s assets and liabilities have been categorized based upon a fair value hierarchy in accordance with ASC 820-10, Fair Value Measurements and Disclosures. ASC 820-10 defines fair value as the price that would be received to sell an asset or would be paid to transfer a liability (i.e., the exit price) in an orderly transaction between market participants at the measurement date. Fair value measurements are not adjusted for transaction costs. The recognition of “block discounts” for large holdings of unrestricted financial instruments where quoted prices are readily and regularly available in an active market is prohibited. ASC 820-10 requires a three-level hierarchy, which prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy level assigned to each financial instrument is based on the assessment of the transparency and reliability of the inputs used in the valuation of such financial instruments at the measurement date based on the lowest level of input that is significant to the fair value measurement. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (level 1 measurement) and the lowest priority to unobservable inputs (level 3 measurements). Financial instruments measured and reported at fair value are classified and disclosed in one of the following categories based on inputs: Level 1 — Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; Level 2 — Quoted prices in markets that are not active and financial instruments for which all significant inputs are observable, either directly or indirectly; Level 3 — Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable. Transfers in or out of levels are recognized based on the beginning fair value of the period in which they occurred. There were no transfers of financial instruments between levels during the three and six months ended June 30, 2016 and 2015 . Derivative Instruments Derivative instruments used for trading purposes, including economic hedges of trading instruments, are carried at fair value. Fair values for exchange-traded derivatives, principally futures, are based on quoted market prices. Fair values for over-the-counter derivative instruments, principally forward contracts, are based on the values of the underlying financial instruments within the contract. The underlying derivative instruments are currencies, which are actively traded. The Company presents its derivatives balances on a net-by-counterparty basis when the criteria for offsetting are met. Derivative instruments used for economic hedging purposes include futures, forward contracts, and options. Unrealized gains or losses on these derivative instruments are recognized currently in the condensed consolidated statements of comprehensive income as trading income, net. The Company does not apply hedge accounting as defined in ASC 815, Derivatives and Hedging , and accordingly unrealized gains or losses on these derivative instruments are recognized currently in the condensed consolidated statements of comprehensive income as trading income, net. Property and Equipment Property and equipment are carried at cost, less accumulated depreciation, except for the assets acquired in connection with the acquisition of MTH, which were recorded at fair value on the date of acquisition. Depreciation is provided using the straight-line method over estimated useful lives of the underlying asset. Routine maintenance, repairs and replacement costs are expensed as incurred and improvements that appreciably extend the useful life of the assets are capitalized. When property and equipment are sold or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and any resulting gain or loss is recognized in income. Property and equipment are reviewed for impairment whenever events or changes in circumstances indicate that the related carrying amount may not be recoverable. Furniture, fixtures, and equipment are depreciated over three to seven years. Leasehold improvements are amortized over the lesser of the length of the lease term or seven years. Capitalized Software The Company accounts for the costs of computer software developed or obtained for internal use in accordance with ASC 350-40, Internal-Use Software . The Company capitalizes costs of materials, consultants, and payroll and payroll related costs for employees incurred in developing internal-use software. Costs incurred during the preliminary project and post-implementation stages are charged to expense. Management’s judgment is required in determining the point at which various projects enter the stages at which costs may be capitalized, in assessing the ongoing value of the capitalized costs, and in determining the estimated useful lives over which the costs are amortized. The Company’s capitalized software development costs excluding the charges recognized in relation to the IPO disclosed below were approximately $2.8 million and $2.8 million for the three months ended June 30, 2016 and 2015 , respectively, and $5.5 million and $5.5 million for the six months ended June 30, 2016 and 2015 , respectively. The related amortization expense was approximately $2.6 million and $2. 7 million for the three months ended June 30, 2016 and 2015 , respectively, and $4.9 million and $5.2 million for the six months ended June 30, 2016 and 2015 , respectively. Additionally, in connection with charges related to share based compensation recognized upon the IPO (Note 14), the Company capitalized and amortized costs for employees in developing internal-use software, which were included within charges related to share based compensation at IPO in the condensed consolidated statements of comprehensive income. The Company capitalized charges related to IPO share based compensation of approximately $0.02 million and $9.5 million for the three months ended June 30, 2016 and 2015 , respectively, and $0.04 million and $9.5 million for the six months ended June 30, 2016 and 2015 , respectively. Amortization expense associated with IPO related share based compensation that was capitalized was approximately $0.2 million and $8.0 million for the three months ended June 30, 2016 and 2015 , respectively, and $0.5 million and $8.0 million for the six months ended June 30, 2016 and 2015 . Capitalized software development costs and related accumulated amortization are included in property, equipment and capitalized software in the accompanying condensed consolidated statements of financial condition and are amortized over a period of 1.4 to 2.5 years, which represents the estimated useful lives of the underlying software. Goodwill Goodwill represents the excess of the purchase price over the underlying net tangible and intangible assets of the Company’s acquisitions. Goodwill is not amortized but is tested for impairment on an annual basis and between annual tests whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. Goodwill is tested at the reporting unit level, which is defined as an operating segment or one level below the operating segment. The Company operates as one operating segment, which is the Company’s only reporting unit. The goodwill impairment test is a two-step process. The first step is used to identify potential impairment and compares the fair value of a reporting unit with its carrying amount, including goodwill. If the carrying amount of a reporting unit exceeds its fair value, the second step of the goodwill impairment test must be performed. The second step is used to measure the amount of impairment loss, if any, and compares the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. If the carrying amount of reporting unit goodwill exceeds the implied fair value of that goodwill, an impairment loss must be recognized in an amount equal to that excess. The Company tests goodwill for impairment on an annual basis on July 1 and on an interim basis when certain events or circumstances exist. In the impairment test as of July 1, 2015, the primary valuation method used to estimate the fair value of the Company’s reporting unit was the market capitalization approach based on the market price of its Class A Common Stock, which the Company’s management believes to be an appropriate indicator of its fair value. Based on the results of the impairment tests performed, no goodwill impairment was recognized during the three and six months ended June 30, 2016 and 2015 , respectively. Intangible Assets The Company amortizes finite-lived intangible assets over their estimated useful lives. Finite-lived intangible assets are tested for impairment annually or when impairment indicators are present, and if impaired, written down to fair value. Exchange Memberships and Stock Exchange memberships are recorded at cost or, if any other than temporary impairment in value has occurred, at a value that reflects management’s estimate of fair value, in accordance with ASC 940-340, Financial Services — Broker and Dealers. Exchange stock includes shares that entitle the Company to certain trading privileges. The shares are marked to market with the corresponding gain or loss recorded under operations and administrative in the condensed consolidated statements of comprehensive income. The Company’s exchange memberships and stock are included in other assets in the condensed consolidated statements of financial condition. Trading Income Trading income is comprised of changes in the fair value of trading assets and liabilities (i.e., unrealized gains and losses) and realized gains and losses on trading assets and liabilities. Trading gains and losses on financial instruments owned and financial instruments sold, not yet purchased are recorded on the trade date and reported on a net basis in the condensed consolidated statements of comprehensive income. Interest and Dividends Income/Interest and Dividends Expense Interest income and interest expense are accrued in accordance with contractual rates. Interest income consists of interest earned on collateralized financing arrangements and on cash held by brokers. Interest expense includes interest expense from collateralized transactions, margin and related lines of credit. Dividends on financial instruments owned including those pledged as collateral and financial instruments sold, not yet purchased are recorded on the ex-dividend date and interest is recognized on the accrual basis. Technology Services Technology services revenues consist of fees earned from third parties for licensing of the Company’s proprietary risk management and trading infrastructure technology and provision of associated management and hosting services. These fees include both upfront and annual recurring fees. Revenue from technology services is recognized once persuasive evidence of an arrangement exists, delivery has occurred, the fee is fixed or determinable and collectability is probable. Revenue is recognized ratably over the contractual service period. Rebates Rebates consist of volume discounts, credits or payments received from exchanges or other market places related to the placement and/or removal of liquidity from the order flow in the marketplace. Rebates are recorded on an accrual basis and included net within brokerage, exchange and clearance fees in the accompanying condensed consolidated statements of comprehensive income. Income Taxes Subsequent to consummation of the Reorganization Transactions and the IPO, the Company is subject to U.S. federal, state and local income taxes on its taxable income. The Company's subsidiaries are subject to income taxes in the respective jurisdictions (including foreign jurisdictions) in which they operate. Prior to the consummation of the Reorganization Transactions and the IPO, no provision for United States federal, state and local income tax was required, as Virtu Financial is a limited liability company and is treated as a pass-through entity for United States federal, state, and local income tax purposes. The provision for income tax is comprised of current tax and deferred tax. Current tax represents the tax on current year tax returns, using tax rates enacted at the balance sheet date. The deferred tax assets are recognized in full and then reduced by a valuation allowance if it is more likely than not that some or all of the deferred tax assets will not be recognized. The Company recognizes the tax benefit from an uncertain tax position, in accordance with ASC 740, Income Taxes only if it is more likely than not that the tax position will be sustained on examination by the applicable taxing authority, including resolution of the appeals or litigation processes, based on the technical merits of the position. The tax benefits recognized in the condensed consolidated financial statements from such a position are measured based on the largest benefit for each such position that has a greater than fifty percent likelihood of being realized upon ultimate resolution. Many factors are considered when evaluating and estimating the tax positions and tax benefits. Such estimates involve interpretations of regulations, rulings, case law, etc. and are inherently complex. The Company’s estimates may require periodic adjustments and may not accurately anticipate actual outcomes as resolution of income tax treatments in individual jurisdictions typically would not be known for several years after completion of any fiscal year. The Company has determined that there are no uncertain tax positions that would have a material impact on the Company’s financial position as of June 30, 2016 and December 31, 2015 or the results of operations or cash flows for the three and six months ended June 30, 2016 and 2015. Comprehensive Income and Foreign Currency Translation The Company’s operating results are reported in the condensed consolidated statements of comprehensive income pursuant to Accounting Standards Update (“ASU”) 2011-05, Comprehensive Income. Comprehensive income consists of two components: net income and other comprehensive income (“OCI”). OCI is comprised of revenues, expenses, gains and losses that are reported in the comprehensive income section of the condensed consolidated statements of comprehensive income, but are excluded from reported net income. The Company’s OCI is comprised of foreign currency translation adjustments. Assets and liabilities of operations having non-U.S. dollar functional currencies are translated at period-end exchange rates, and revenues and expenses are translated at weighted average exchange rates for the period. Gains and losses resulting from translating foreign currency financial statements, net of related tax effects, are reflected in accumulated other comprehensive income, a separate component of stockholders’ equity. Share-Based Compensation The Company accounts for share-based compensation transactions with employees under the provisions of ASC 718, Compensation: Stock Compensation. Share-based compensation transactions with employees are measured based on the fair value of equity instruments issued. The fair value of awards issued for compensation prior to the Reorganization Transactions and the IPO was determined by management, with the assistance of an independent third party valuation firm, using a projected annual forfeiture rate, where applicable, on the date of grant. Share-based awards issued for compensation in connection with or subsequent to the Reorganization Transaction and the IPO pursuant to the VFI 2015 Management Incentive Plan (the “2015 Management Incentive Plan”) were in the form of stock options, Class A common stock and restricted stock units. The fair value of the stock option grants is determined through the application of the Black-Scholes-Merton model. The fair value of the Class A common stock and restricted stock units are determined based on the volume weighted average price for the three days preceding the grant, and with respect to the restricted stock units, a projected annual forfeiture rate. The fair value of share-based awards granted to employees is expensed based on the vesting conditions and are recognized on a straight line basis over the vesting period . The Company records as treasury stock shares repurchased from its employees for the purpose of settling tax liabilities incurred upon the issuance of common stock, the vesting of restricted stock units or the exercise of stock options. Recent Accounting Pronouncements Revenue - In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers . ASU 2014-09 is a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. ASU 2014-09 also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date. ASU No. 2015-14 defers the effective date of ASU No. 2014-09 by one year for public companies. ASU 2015-14 applies to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Early adoption is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The Company has not yet determined the potential effects of the adoption of ASU 2014-09 and ASU 2015-14 on its condensed consolidated financial statements. Repurchase Agreements - In June 2014, the FASB released ASU No. 2014-11, Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. The amendment changes the accounting for repurchase financing transactions and for repurchase-to-maturity transactions to secured borrowing accounting. The accounting changes were effective for the Company beginning in the first quarter of 2015. The effect of the accounting changes on transactions outstanding as of the effective date is required to be presented as a cumulative effect adjustment to retained earnings as of January 1, 2015. The amendment also requires additional disclosures for repurchase agreements and securities lending transactions regarding the class of collateral pledged and the remaining contractual maturity of the agreements, as well as a discussion on the potential risks associated with the agreements and the related collateral pledged, as well as how those risks are managed. Additional disclosures are required for repurchase agreements, securities lending transactions, sales with a total return swap, and other similar transfers of financial assets that are accounted for as a sale. The Company adopted this ASU during the year ended December 31, 2015. This ASU did not have an impact on the Company’s condensed consolidated financial statements except for the additional disclosures described in Note 9. Going Concern — In August 2014, the FASB issued ASU 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. The guidance will explicitly require management to assess an entity’s ability to continue as a going concern and to provide related footnote disclosures in certain circumstances. The new standard will be effective in the first annual period ending after December 15, 2016 (fiscal year 2017 for the Company). Earlier adoption is permitted. The Company will implement this new standard on the required effective date. This ASU is not expected to have an impact on the Company’s condensed consolidated financial statements. Debt Issuance Costs — In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs. The ASU requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts, rather than as a deferred charge asset. The ASU is effective for financial statements issued for fiscal years beginning after December 15, 2015 (fiscal year 2016 for the Company), and interim periods within those fiscal years. Early adoption of the amendment is permitted and the Company has elected to early adopt this ASU effective as of March 31, 2015. In August 2015, the FASB issued ASU 2015-15, Interest – Presentation and Subsequent Measurement of Debit Issuance Costs Associated with Line-of-Credit Arrangement . The ASU stated that the SEC staff would not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. The Company reports debt issuance cost related to the senior secured credit facility as a direct deduction from the carrying amount of debt liability. Financ ial Assets and Liabilities — In January 2016, the FASB issued ASU 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities . The update intends to enhance the reporting model for financial instruments to provide users of financial statements with more decision-useful information and addresses certain aspects of the recognition, measurement, presentation, and disclosure of financial instruments. The new standard affects all entities that hold financial assets or owe financial liabilities and is effective for annual reporting periods (including interim periods) beginning after December 15, 2017. Early adoption of the ASU is not permitted, e xcept for the amendments relating to the presentation of the change in the instrument-specific credit risk relating to a liability that an entity has elected to measure at fair value . The Company is currently evaluating the potential effects of the adoption of ASU 2016-01 on its condensed consolidated financial statements. Leases — In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). Under the new ASU, a lessee will be required to recognize assets and liabilities for leases with lease terms of more than 12 months. The liability will be equal to the present value of lease payments. The asset, referred to as a “right-of-use asset” will be based on the liability, subject to adjustment, such as for initial direct costs. For income statement purposes, leases will be classified as either operating or finance. Operating leases will result in straight-line expense (similar to current operating leases) while finance leases will result in a front-loaded expense pattern (similar to current capital leases). Classification will be based on criteria that are largely similar to those applied in current lease accounting, but without explicit bright lines. New quantitative and qualitative disclosures, including significant judgments made by management, will be required to provide greater information regarding the extent of revenue and expense recognized and expected to be recognized from existing contracts. The standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company is currently evaluating the potential effects of the adoption of ASU 2016-02 on the Company’s condensed consolidated financial statements. Compensation – Stock Compensation — In March 2016, FASB issued ASU 2016-09, Employee Share-Based Payment Accounting Improvements . The ASU makes a number of changes to accounting for share based payment programs, including the following principal changes: providing that all excess tax benefits and tax deficiencies arising from share-based payment programs should be recognized as income tax expense or benefit in the income statement; allowing companies to make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest (as is provided under current GAAP) or account for forfeitures when they occur; and providing that partial cash settlement of an award for tax-withholding purposes would not result, by itself, in liability classification of the award provided the amount withheld does not exceed the maximum statutory tax rate (as opposed to the current requirement which specifies the minimum statutory tax rate) for an employee in the applicable jurisdictions. The ASU also provides guidance on the classification of various items related to share based payment programs in the statement of cash flows. The ASU is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted. An entity that elects early adoption must adopt all of the amendments in the same period. The Company is currently evaluating the potential effects of adoption of ASU 2016-09 on the Company’s condensed consolidated financial statements. |