Summary of Significant Accounting Policies (Policies)	12 Months Ended
Dec. 31, 2012
Principles of Consolidation and Basis of Presentation	*Principles of Consolidation and Basis of Presentation* The Company’s consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The condensed consolidated financial statements include the accounts of the Company, its wholly-owned subsidiaries and sponsored investment products in which it has a controlling financial interest. The Company is generally considered to have a controlling financial interest when it owns a majority of the voting interest in an entity or otherwise has the power to govern the financial and operating policies of the subsidiary. See Note 19 for additional information related to the consolidation of sponsored investment products. Material intercompany accounts and transactions have been eliminated. The Company also evaluates for consolidation any variable interest entities (“VIEs”) in which the Company is the primary beneficiary. A VIE is an entity in which either (a) the equity investment at risk is not sufficient to permit the entity to finance its own activities without additional financial support or (b) the group of holders of the equity investment at risk lack certain characteristics of a controlling financial interest. The primary beneficiary is the entity that has the obligation to absorb a majority of the expected losses or the right to receive the majority of the residual returns. The Company evaluates whether entities in which it has an interest are VIEs and whether the Company is the primary beneficiary of any VIEs identified in its analysis.
Reclassifications	*Reclassifications* Certain amounts in the prior years’ financial statements have been reclassified to conform to the current year’s presentation.
Noncontrolling Interest	*Noncontrolling Interest* Noncontrolling interests related to certain consolidated sponsored investment products are classified as redeemable noncontrolling interests because investors in these funds may request withdrawals at any time.
Use of Estimates	*Use of Estimates* The preparation of the consolidated financial statements requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosures of contingent assets and liabilities at the dates of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting periods. Management believes the estimates used in preparing the consolidated financial statements are reasonable and prudent. Actual results could differ from those estimates.
Segment information	*Segment information* Accounting Standards Codification (“ASC”) 280, Segment Reporting, establishes disclosure requirements relating to operating segments in annual and interim financial statements. Business or operating segments are defined as components of an enterprise about which separate financial information is available that is regularly evaluated by the chief operating decision maker in deciding how to allocate resources and assess performance. The Company operates in one business segment, namely as an asset manager providing investment management and distribution services for individual and institutional clients. The Company’s Chief Executive Officer and Chief Financial Officer are the Company’s chief operating decision makers. Although the Company does make some disclosure regarding assets under management and other asset flows by product, the Company’s determination that it operates in one business segment is based on the fact that the same investment and operational resources support multiple products, they have the same regulatory framework and that the Company’s chief operating decision makers review the Company’s financial performance at a consolidated level. All of the products and services provided relate to investment management and are subject to a similar regulatory framework and environment. Investment organizations within the Company are generally not aligned with specific product lines. Investment professionals may manage both retail and institutional products.
Cash and Cash Equivalents	*Cash and Cash Equivalents* Cash and cash equivalents consist of cash in banks and highly liquid money market mutual fund investments.
Marketable Securities	*Marketable Securities* Marketable securities consist of investments in the Company’s sponsored mutual funds and other publicly traded securities which are carried at fair value in accordance with ASC 320, Investments – Debt and Equity Securities. Marketable securities transactions are recorded on a trade date basis. Mutual fund investments held by the Company’s broker-dealer subsidiary are classified as assets held for trading purposes. The Company provides the initial capital to funds or separately managed account strategies for the purpose of creating investment performance track records. For the year ended December 31, 2012, the Company recognized a realized gain of $0.4 million. For the year ended December 31, 2011, the Company recognized a realized loss of less than $(0.1) million and for the year ended December 31, 2010, the Company recognized realized gains of $0.3 million. Other mutual fund investments held by the Company are considered to be available-for-sale, with any unrealized appreciation or depreciation, net of income taxes, reported as a component of accumulated other comprehensive income in stockholders’ equity. Marketable securities are marked to market based on the respective publicly quoted net asset values of the funds or market prices of the equity securities or bonds. On a quarterly basis, the Company conducts reviews to assess whether other-than-temporary impairment exists on its available-for-sale marketable securities. Other-than-temporary declines in value may exist when the fair value of a marketable security has been below the carrying value for an extended period of time. If an other-than-temporary decline in value is determined to exist, the unrealized investment loss, net of tax is recognized in the consolidated statements of operations in the period in which the other-than-temporary decline in value occurs, as well as an accompanying permanent adjustment to accumulated other comprehensive income.
Deferred Commissions	*Deferred Commissions* Deferred commissions, which are included in long-term investments and other assets, are commissions paid to broker-dealers on sales of mutual fund shares. Deferred commissions are recovered by the receipt of monthly asset-based distributor fees from the mutual funds or contingent deferred sales charges received upon redemption of shares within one to five years, depending on the fund share class. The deferred costs resulting from the sale of shares are amortized on a straight-line basis over a one to five-year period, depending on the fund share class, or until the underlying shares are redeemed. Deferred commissions are periodically assessed for impairment and additional amortization expense is recorded, as appropriate.
Furniture, Equipment and Leasehold Improvements, Net	*Furniture, Equipment and Leasehold Improvements, Net* Furniture, equipment and leasehold improvements are recorded at cost. Depreciation is computed using the straight-line method over the estimated useful lives of 3 to 10 years for furniture and office equipment, and 3 to 5 years for computer equipment and software. Leasehold improvements are depreciated over the shorter of the remaining estimated lives of the related leases or lives of the improvements. Major renewals or betterments are capitalized and recurring repairs and maintenance are expensed as incurred. Leasehold improvements that are funded upfront by a landlord and are constructed for the benefit of the Company are recorded at cost and depreciated on a straight-line basis over the minimum term of the lease and a corresponding lease incentive liability in the same amount is also recorded and amortized over the same period.
Leases	*Leases* The Company currently leases office space and equipment under various leasing arrangements. Leases are classified as either capital leases or operating leases, as appropriate. Most lease agreements are classified as operating leases and contain renewal options, rent escalation clauses or other inducements provided by the lessor. Rent expense under non-cancelable operating leases with scheduled rent increases or rent holidays is accounted for on a straight-line basis over the lease term, beginning on the date of initial possession or the effective date of the lease agreement. The amount of the excess of straight-line rent expense over scheduled payments is recorded as a deferred liability. Build-out allowances and other such lease incentives are recorded as deferred credits, and are amortized on a straight-line basis as a reduction of rent expense beginning in the period they are deemed to be earned, which generally coincides with the effective date of the lease.
Intangible Assets and Goodwill	*Intangible Assets and Goodwill* Definite-lived intangible assets are comprised of acquired investment advisory contracts. These assets are amortized on a straight-line basis over the estimated useful lives of such assets, which range from 1 to 16 years. Definite-lived intangible assets are evaluated for impairment on an ongoing basis under GAAP whenever events or circumstances indicate that the carrying value of the definite-lived intangible asset may not be fully recoverable. The Company determines if impairment has occurred by comparing estimates of future undiscounted cash flows to the carrying value of assets. Assets are considered impaired, and impairment is recorded, if the carrying value exceeds the expected future undiscounted cash flows. Goodwill represents the excess of the purchase price of acquisitions and mergers over the identified net assets and liabilities acquired. In accordance with ASC 350, Goodwill and Other Intangible Assets, goodwill is not being amortized. A single reporting unit has been identified for the purpose of assessing potential future impairments of goodwill. An impairment analysis of goodwill is performed annually or more frequently, if warranted by events or changes in circumstances affecting the Company’s business. In September 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2011-08, Testing Goodwill for Impairment (the revised standard) which amends the rules for testing goodwill for impairment. Under the new rules, an entity has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, an entity determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the two-step impairment test is unnecessary. We early adopted ASU 2011-08 for our 2011 annual goodwill impairment test. Indefinite-lived intangible assets are comprised of acquired, closed-end fund investment advisory contracts. These assets are tested for impairment annually and when events or changes in circumstances indicate the assets might be impaired. Our fiscal 2012 and 2011 annual indefinite-lived intangible assets impairment analyses did not result in any impairment charges. In July 2012, the FASB issued ASU No. 2012-02, Testing Indefinite-Lived Intangible Assets for Impairment. The standard provides entities with an option to perform a qualitative assessment of indefinite-lived intangible assets other than goodwill for impairment to determine if additional impairment testing is necessary. The standard is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012, however early adoption is allowed. The Company has adopted this ASU as of September 30, 2012.
Treasury Stock	*Treasury Stock* Treasury stock is accounted for under the cost method and is included as a deduction from equity in the Stockholders’ Equity section of the Consolidated Balance Sheets. Upon any subsequent resale, the treasury stock account is reduced by the cost of such stock using the average cost method. In the fourth quarter of 2010, the Company implemented a share repurchase program allowing for the repurchase of up to 350,000 shares of the Company’s common stock. Under the terms of the program, the Company may repurchase its common stock from time to time in its discretion through open market repurchases and/or privately negotiated transactions, depending on price and prevailing market and business conditions. The program is intended to return capital to shareholders and to generally offset shares issued under equity-based plans. The program may be suspended or terminated at any time and the authorization for the program expires three years from inception. As of December 31, 2012, the Company has repurchased a total of 245,000 common shares for $17.7 million.
Collateralized Debt and Loan Obligations	*Collateralized Debt and Loan Obligations* At December 31, 2012 and 2011, our affiliates serve as the collateral managers for structured finance products, such as collateralized loan obligations and collateralized bond obligations, collectively referred to as collateralized debt obligations (“CDOs”). The CDOs, which are investment trusts, had aggregate assets of $0.7 billion, $1.0 billion and $1.0 billion at December 31, 2012, 2011 and 2010, respectively, which were primarily invested in a variety of fixed income securities. The CDOs reside in bankruptcy remote, special purpose entities in which the Company provides neither recourse nor guarantees. The Company has determined that it is not the primary beneficiary of these VIEs as defined by ASC 810, Consolidation. Accordingly, the Company’s financial exposure to these CDOs is limited only to the collateral investment management fees it earns, which totaled $2.5 million, $3.3 million and $4.6 million for the years ended December 31, 2012, 2011 and 2010, respectively.
Revenue Recognition	*Revenue Recognition* Investment management fees, distribution and service fees and administration and transfer agent fees are recorded as revenue during the period in which services are performed. Investment management fees are earned based upon a percentage of assets under management, and are paid pursuant to the terms of the respective investment management contracts, which generally require monthly or quarterly payment. Management fees for structured finance products, such as CLOs and CDOs, that accrue as services are rendered, but are subordinate to other interests and payable only if certain financial criteria of the underlying collateral are met, are recorded as revenue when the structured finance products are in compliance with required financial criteria and collectability is reasonably assured. The Company accounts for investment management fees in accordance with ASC 605, Revenue Recognition, and has recorded its management fees net of fees paid to unaffiliated advisors. Amounts paid to unaffiliated advisors for the years ended December 31, 2012, 2011 and 2010 were $53.7 million, $36.4 million and $24.0 million, respectively. Distribution and service fees are earned based on a percentage of assets under management and are paid monthly pursuant to the terms of the respective distribution and service fee contracts. Underwriter fees are sales-based charges on sales of certain class A-share mutual funds. Administration and transfer agent fees consist of fund administration fees, transfer agent fees and fiduciary fees. Fund administration fees are earned based on the average daily assets in the funds. Transfer agent fees are earned based on the average daily assets in the funds. Fiduciary fees are recorded monthly based on the number of 401(k) accounts. The Company utilizes outside service providers to perform some of the functions related to fund administration and transfer agent services. Other income and fees consist primarily of redemption income on the early redemption of class B, C, and T-share mutual funds and brokerage commissions and fees earned for distribution of nonaffiliated products. Commissions earned (and related expenses) are recorded on a trade date basis and are computed based upon contractual agreements.
Advertising and Promotion	*Advertising and Promotion* The Company expenses all advertising and promotion costs as incurred. Advertising and promotional expense was $0.5 million, $0.3 million and $0.2 million for the years ended December 31, 2012, 2011 and 2010, respectively, and are classified in other operating expense in the Consolidated Statements of Operations.
Stock-based Compensation	*Stock-based Compensation* The Company accounts for stock-based compensation expense in accordance with ASC 718, Compensation—Stock Compensation, which requires the measurement and recognition of compensation expense for share-based awards based on the estimated fair value on the date of grant. The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model. The Black-Scholes option valuation model incorporates assumptions as to dividend yield, volatility, an appropriate risk-free interest rate and the expected life of the option. Restricted stock units (“RSUs”) are stock awards that entitle the holder to receive shares of the Company’s common stock as the award vests over time. The fair value of each restricted stock unit award is estimated using the intrinsic value method which is based on the fair market value price on the date of grant. Compensation expense for restricted stock awards is recognized ratably over the vesting period on a straight-line basis.
Income Taxes	*Income Taxes* Significant judgment is required in determining the provision for income taxes and, in particular, any valuation allowance recorded against our deferred tax assets. Our methodology for determining the realizability of deferred tax assets involves estimates of future taxable income from our operations and consideration of available tax planning strategies and actions that would be implemented by us, if necessary, as well as the expiration dates and amounts of carryforwards related to net operating losses and capital losses. These estimates are projected through the life of the related deferred tax assets based on assumptions that we believe to be reasonable and consistent with demonstrated operating results. The projection also includes consideration of the reversal of deferred tax liabilities that are in the same period and jurisdiction and are of the same character as the temporary differences that gave rise to the deferred tax assets. Changes in future operating results not currently forecasted may have a significant impact on the realization of deferred tax assets. During 2011, the Company determined that historical operating results and future projections gave rise to sufficient positive evidence to conclude that it is more likely than not that a substantial portion of its deferred tax assets are realizable. Uncertain tax positions taken by the Company are accounted for under ASC 740, Income Taxes, which may require certain benefits taken on a tax return to not be recognized in the financial statements when there is the potential for certain tax positions to be successfully challenged by the taxing authorities.
Comprehensive Income	*Comprehensive Income* The Company reports all changes in comprehensive income in the Consolidated Statements of Changes in Stockholders’ Equity and Comprehensive Income. Comprehensive income includes net income (loss) attributable to common shareholders and unrealized gains and losses on investments classified as available-for-sale (net of tax).
Earnings Per Share	*Earnings Per Share* Earnings per share (“EPS”) is calculated in accordance with ASC 260, Earnings per Share. Net income per common share reflects application of the two-class method. Basic EPS excludes dilution for potential common stock issuances and is computed by dividing basic net income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. For the calculation of diluted EPS, the basic weighted average number of shares is increased by the dilutive effect of restricted stock units and common stock options using the treasury stock method. Under the two-class method, during periods of net income, participating securities are allocated a proportional share of net income. During periods of net loss, no effect is given to participating securities since they do not share in the losses of the Company. Participating securities have the effect of diluting both basic and diluted EPS during periods of net income. All of the outstanding shares of the Company’s Series B Preferred Stock were converted to common stock in January 2012.
Fair Value Measurements and Fair Value of Financial Instruments	*Fair Value Measurements and Fair Value of Financial Instruments* The FASB defines fair value as the price that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. ASC 820, Fair Value Measurements and Disclosures establishes a framework for measuring fair value and a valuation hierarchy based upon the transparency of inputs used in the valuation of an asset or liability. Classification within the hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The valuation hierarchy contains three levels as follows: Level 1 – Quoted prices for identical instruments in active markets. Level 1 assets and liabilities may include debt securities and equity securities that are traded in an active exchange market. Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Level 2 inputs may include observable market data such as closing market prices provided by independent pricing services after considering factors such as the yields or prices of comparable investments of comparable quality, coupon, maturity, call rights and other potential prepayments, terms and type, reported transactions, indications as to values from dealers and general market conditions. In addition, pricing services may determine the fair value of equity securities traded principally in foreign markets when it has been determined that there has been a significant trend in the U.S. equity markets or in index futures trading. Level 2 assets and liabilities may include debt and equity securities, purchased loans and over-the-counter derivative contracts whose fair value is determined using a pricing model without significant unobservable market data inputs. Level 3 – Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable in active exchange markets. The following is a discussion of the valuation methodologies used for assets measured at fair value. Sponsored mutual funds and variable insurance funds include amounts in affiliated investment products. The fair value of these securities are generally determined based on their published net asset values and are included as Level 1 within the hierarchy. Investments of consolidated sponsored investment products include debt and equity securities held in portfolios of sponsored funds that are consolidated by the Company. Equity securities are valued at the official closing price on the exchange on which the securities are traded and categorized as Level 1 in the hierarchy. Certain non-U.S. securities may be fair valued in cases where closing prices are not readily available or are deemed to not reflect readily available market prices. In such cases, the fair value is determined using an independent pricing service and fair valuations are categorized as Level 2 in the hierarchy. Most debt securities are valued based on quotations received from independent pricing services or from dealers who make markets in such securities. These investments are generally categorized as Level 2 in the hierarchy. Pricing services do not provide pricing for all securities and therefore indicative bids from dealers are utilized which are based on pricing models used by market makers in the security and are generally categorized as Level 2 in the hierarchy. Equity securities include securities traded on active markets and are valued at the official closing price (typically last sale) on the exchange on which the securities are primarily traded, or if no closing price is available, at the last bid price and are categorized as Level 1 in the hierarchy. Sponsored closed-end funds include amounts in affiliated investment products. These investments are valued as Level 1 within the valuation hierarchy because they are valued through the use of quoted market prices available in active markets. Nonqualified retirement plan assets include mutual funds whose fair value is generally determined based on their published net asset value. They are classified as Level 1 within the valuation hierarchy. Cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities equal or approximate fair value based on the short-term nature of these instruments. The estimated fair value of long-term debt at December 31, 2012, which has a variable interest rate, approximates its carrying value. Marketable securities are reflected in the financial statements at fair value based upon publicly quoted market prices.
Recent Accounting Pronouncements	*Recent Accounting Pronouncements* In May 2011, the FASB issued ASU No. 2011-04, Fair Value Measurement: Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS, and the International Accounting Standards Board issued International Financial Reporting Standard (“IFRS”) 13, Fair Value Measurement (together, the new guidance). The new guidance results in a consistent definition of fair value and common requirements for measurement of and disclosure about fair value between U.S. GAAP and IFRS. The new guidance changes some fair value measurement principles and disclosure requirements. The Company has adopted this ASU as of January 1, 2012. In June 2011, the FASB issued ASU No. 2011-05, Presentation of Comprehensive Income, which eliminates the current option to report other comprehensive income and its components in the statement of changes in equity and allows an entity to elect to present items of net income and other comprehensive income in one continuous statement or in two separate, but consecutive, statements. The Company has adopted this ASU as of January 1, 2012. In July 2012, the FASB issued ASU No. 2012-02, Testing Indefinite-Lived Intangible Assets for Impairment. The standard provides entities with an option to perform a qualitative assessment of indefinite-lived intangible assets other than goodwill for impairment to determine if additional impairment testing is necessary. The standard is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012, however early adoption is allowed. The Company has adopted this ASU as of September 30, 2012. In August 2012, the FASB issued ASU No. 2012-03, Technical Amendments and Corrections to SEC Sections: Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin (“SAB”) No. 114, Technical Amendments Pursuant to SEC Release No. 33-9250, and Corrections Related to FASB Accounting Standards Update 2010-22. This update amends various SEC paragraphs pursuant to the issuance of SAB No. 114. The adoption of ASU 2012-03 is not expected to have a material impact on the Company’s financial position or results of operations. In October 2012, the FASB issued ASU No. 2012-04, Technical Corrections and Improvements. This update amends source literature, clarifies guidance and reference corrections and relocates some guidance within the Codification. The adoption of ASU 2012-04 is not expected to have a material impact on the Company’s financial position or results of operations. In February 2013, the FASB issued ASU No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. Under ASU 2013-02, an entity is required to provide information about the amounts reclassified out of Accumulated Other Comprehensive Income (“AOCI”) by component. In addition, an entity is required to present, either on the face of the financial statements or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income, but only if the amount reclassified is required to be reclassified in its entirety in the same reporting period. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about those amounts. ASU 2013-02 does not change the current requirements for reporting net income or other comprehensive income in the financial statements. This standard is effective for the Company’s first quarter of fiscal year 2013. The adoption of this new guidance will require additional disclosures and presentation of items impacting other comprehensive income but will not have an impact on our consolidated financial statements.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2012

Principles of Consolidation and Basis of Presentation

Principles of Consolidation and Basis of Presentation

The Company’s consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The condensed consolidated financial statements include the accounts of the Company, its wholly-owned subsidiaries and sponsored investment products in which it has a controlling financial interest. The Company is generally considered to have a controlling financial interest when it owns a majority of the voting interest in an entity or otherwise has the power to govern the financial and operating policies of the subsidiary. See Note 19 for additional information related to the consolidation of sponsored investment products. Material intercompany accounts and transactions have been eliminated. The Company also evaluates for consolidation any variable interest entities (“VIEs”) in which the Company is the primary beneficiary. A VIE is an entity in which either (a) the equity investment at risk is not sufficient to permit the entity to finance its own activities without additional financial support or (b) the group of holders of the equity investment at risk lack certain characteristics of a controlling financial interest. The primary beneficiary is the entity that has the obligation to absorb a majority of the expected losses or the right to receive the majority of the residual returns. The Company evaluates whether entities in which it has an interest are VIEs and whether the Company is the primary beneficiary of any VIEs identified in its analysis.

Reclassifications

Reclassifications

Certain amounts in the prior years’ financial statements have been reclassified to conform to the current year’s presentation.

Noncontrolling Interest

Noncontrolling Interest

Noncontrolling interests related to certain consolidated sponsored investment products are classified as redeemable noncontrolling interests because investors in these funds may request withdrawals at any time.

Use of Estimates

Use of Estimates

The preparation of the consolidated financial statements requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosures of contingent assets and liabilities at the dates of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting periods. Management believes the estimates used in preparing the consolidated financial statements are reasonable and prudent. Actual results could differ from those estimates.

Segment information

Segment information

Accounting Standards Codification (“ASC”) 280, Segment Reporting, establishes disclosure requirements relating to operating segments in annual and interim financial statements. Business or operating segments are defined as components of an enterprise about which separate financial information is available that is regularly evaluated by the chief operating decision maker in deciding how to allocate resources and assess performance. The Company operates in one business segment, namely as an asset manager providing investment management and distribution services for individual and institutional clients. The Company’s Chief Executive Officer and Chief Financial Officer are the Company’s chief operating decision makers. Although the Company does make some disclosure regarding assets under management and other asset flows by product, the Company’s determination that it operates in one business segment is based on the fact that the same investment and operational resources support multiple products, they have the same regulatory framework and that the Company’s chief operating decision makers review the Company’s financial performance at a consolidated level. All of the products and services provided relate to investment management and are subject to a similar regulatory framework and environment. Investment organizations within the Company are generally not aligned with specific product lines. Investment professionals may manage both retail and institutional products.

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and cash equivalents consist of cash in banks and highly liquid money market mutual fund investments.

Marketable Securities

Marketable Securities

Marketable securities consist of investments in the Company’s sponsored mutual funds and other publicly traded securities which are carried at fair value in accordance with ASC 320, Investments – Debt and Equity Securities. Marketable securities transactions are recorded on a trade date basis. Mutual fund investments held by the Company’s broker-dealer subsidiary are classified as assets held for trading purposes. The Company provides the initial capital to funds or separately managed account strategies for the purpose of creating investment performance track records. For the year ended December 31, 2012, the Company recognized a realized gain of $0.4 million. For the year ended December 31, 2011, the Company recognized a realized loss of less than $(0.1) million and for the year ended December 31, 2010, the Company recognized realized gains of $0.3 million. Other mutual fund investments held by the Company are considered to be available-for-sale, with any unrealized appreciation or depreciation, net of income taxes, reported as a component of accumulated other comprehensive income in stockholders’ equity. Marketable securities are marked to market based on the respective publicly quoted net asset values of the funds or market prices of the equity securities or bonds.

On a quarterly basis, the Company conducts reviews to assess whether other-than-temporary impairment exists on its available-for-sale marketable securities. Other-than-temporary declines in value may exist when the fair value of a marketable security has been below the carrying value for an extended period of time. If an other-than-temporary decline in value is determined to exist, the unrealized investment loss, net of tax is recognized in the consolidated statements of operations in the period in which the other-than-temporary decline in value occurs, as well as an accompanying permanent adjustment to accumulated other comprehensive income.

Deferred Commissions

Deferred Commissions

Deferred commissions, which are included in long-term investments and other assets, are commissions paid to broker-dealers on sales of mutual fund shares. Deferred commissions are recovered by the receipt of monthly asset-based distributor fees from the mutual funds or contingent deferred sales charges received upon redemption of shares within one to five years, depending on the fund share class. The deferred costs resulting from the sale of shares are amortized on a straight-line basis over a one to five-year period, depending on the fund share class, or until the underlying shares are redeemed. Deferred commissions are periodically assessed for impairment and additional amortization expense is recorded, as appropriate.

Furniture, Equipment and Leasehold Improvements, Net

Furniture, Equipment and Leasehold Improvements, Net

Furniture, equipment and leasehold improvements are recorded at cost. Depreciation is computed using the straight-line method over the estimated useful lives of 3 to 10 years for furniture and office equipment, and 3 to 5 years for computer equipment and software. Leasehold improvements are depreciated over the shorter of the remaining estimated lives of the related leases or lives of the improvements. Major renewals or betterments are capitalized and recurring repairs and maintenance are expensed as incurred. Leasehold improvements that are funded upfront by a landlord and are constructed for the benefit of the Company are recorded at cost and depreciated on a straight-line basis over the minimum term of the lease and a corresponding lease incentive liability in the same amount is also recorded and amortized over the same period.

Leases

Leases

The Company currently leases office space and equipment under various leasing arrangements. Leases are classified as either capital leases or operating leases, as appropriate. Most lease agreements are classified as operating leases and contain renewal options, rent escalation clauses or other inducements provided by the lessor. Rent expense under non-cancelable operating leases with scheduled rent increases or rent holidays is accounted for on a straight-line basis over the lease term, beginning on the date of initial possession or the effective date of the lease agreement. The amount of the excess of straight-line rent expense over scheduled payments is recorded as a deferred liability. Build-out allowances and other such lease incentives are recorded as deferred credits, and are amortized on a straight-line basis as a reduction of rent expense beginning in the period they are deemed to be earned, which generally coincides with the effective date of the lease.

Intangible Assets and Goodwill

Intangible Assets and Goodwill

Definite-lived intangible assets are comprised of acquired investment advisory contracts. These assets are amortized on a straight-line basis over the estimated useful lives of such assets, which range from 1 to 16 years. Definite-lived intangible assets are evaluated for impairment on an ongoing basis under GAAP whenever events or circumstances indicate that the carrying value of the definite-lived intangible asset may not be fully recoverable. The Company determines if impairment has occurred by comparing estimates of future undiscounted cash flows to the carrying value of assets. Assets are considered impaired, and impairment is recorded, if the carrying value exceeds the expected future undiscounted cash flows.

Goodwill represents the excess of the purchase price of acquisitions and mergers over the identified net assets and liabilities acquired. In accordance with ASC 350, Goodwill and Other Intangible Assets, goodwill is not being amortized. A single reporting unit has been identified for the purpose of assessing potential future impairments of goodwill. An impairment analysis of goodwill is performed annually or more frequently, if warranted by events or changes in circumstances affecting the Company’s business. In September 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2011-08, Testing Goodwill for Impairment (the revised standard) which amends the rules for testing goodwill for impairment. Under the new rules, an entity has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, an entity determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the two-step impairment test is unnecessary. We early adopted ASU 2011-08 for our 2011 annual goodwill impairment test.

Indefinite-lived intangible assets are comprised of acquired, closed-end fund investment advisory contracts. These assets are tested for impairment annually and when events or changes in circumstances indicate the assets might be impaired. Our fiscal 2012 and 2011 annual indefinite-lived intangible assets impairment analyses did not result in any impairment charges.

In July 2012, the FASB issued ASU No. 2012-02, Testing Indefinite-Lived Intangible Assets for Impairment. The standard provides entities with an option to perform a qualitative assessment of indefinite-lived intangible assets other than goodwill for impairment to determine if additional impairment testing is necessary. The standard is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012, however early adoption is allowed. The Company has adopted this ASU as of September 30, 2012.

Treasury Stock

Treasury Stock

Treasury stock is accounted for under the cost method and is included as a deduction from equity in the Stockholders’ Equity section of the Consolidated Balance Sheets. Upon any subsequent resale, the treasury stock account is reduced by the cost of such stock using the average cost method.

In the fourth quarter of 2010, the Company implemented a share repurchase program allowing for the repurchase of up to 350,000 shares of the Company’s common stock. Under the terms of the program, the Company may repurchase its common stock from time to time in its discretion through open market repurchases and/or privately negotiated transactions, depending on price and prevailing market and business conditions. The program is intended to return capital to shareholders and to generally offset shares issued under equity-based plans. The program may be suspended or terminated at any time and the authorization for the program expires three years from inception. As of December 31, 2012, the Company has repurchased a total of 245,000 common shares for $17.7 million.

Collateralized Debt and Loan Obligations

Collateralized Debt and Loan Obligations

At December 31, 2012 and 2011, our affiliates serve as the collateral managers for structured finance products, such as collateralized loan obligations and collateralized bond obligations, collectively referred to as collateralized debt obligations (“CDOs”). The CDOs, which are investment trusts, had aggregate assets of $0.7 billion, $1.0 billion and $1.0 billion at December 31, 2012, 2011 and 2010, respectively, which were primarily invested in a variety of fixed income securities. The CDOs reside in bankruptcy remote, special purpose entities in which the Company provides neither recourse nor guarantees. The Company has determined that it is not the primary beneficiary of these VIEs as defined by ASC 810, Consolidation. Accordingly, the Company’s financial exposure to these CDOs is limited only to the collateral investment management fees it earns, which totaled $2.5 million, $3.3 million and $4.6 million for the years ended December 31, 2012, 2011 and 2010, respectively.

Revenue Recognition

Revenue Recognition

Investment management fees, distribution and service fees and administration and transfer agent fees are recorded as revenue during the period in which services are performed. Investment management fees are earned based upon a percentage of assets under management, and are paid pursuant to the terms of the respective investment management contracts, which generally require monthly or quarterly payment. Management fees for structured finance products, such as CLOs and CDOs, that accrue as services are rendered, but are subordinate to other interests and payable only if certain financial criteria of the underlying collateral are met, are recorded as revenue when the structured finance products are in compliance with required financial criteria and collectability is reasonably assured.

The Company accounts for investment management fees in accordance with ASC 605, Revenue Recognition, and has recorded its management fees net of fees paid to unaffiliated advisors. Amounts paid to unaffiliated advisors for the years ended December 31, 2012, 2011 and 2010 were $53.7 million, $36.4 million and $24.0 million, respectively.

Distribution and service fees are earned based on a percentage of assets under management and are paid monthly pursuant to the terms of the respective distribution and service fee contracts. Underwriter fees are sales-based charges on sales of certain class A-share mutual funds.

Administration and transfer agent fees consist of fund administration fees, transfer agent fees and fiduciary fees. Fund administration fees are earned based on the average daily assets in the funds. Transfer agent fees are earned based on the average daily assets in the funds. Fiduciary fees are recorded monthly based on the number of 401(k) accounts. The Company utilizes outside service providers to perform some of the functions related to fund administration and transfer agent services.

Other income and fees consist primarily of redemption income on the early redemption of class B, C, and T-share mutual funds and brokerage commissions and fees earned for distribution of nonaffiliated products. Commissions earned (and related expenses) are recorded on a trade date basis and are computed based upon contractual agreements.

Advertising and Promotion

Advertising and Promotion

The Company expenses all advertising and promotion costs as incurred. Advertising and promotional expense was $0.5 million, $0.3 million and $0.2 million for the years ended December 31, 2012, 2011 and 2010, respectively, and are classified in other operating expense in the Consolidated Statements of Operations.

Stock-based Compensation

Stock-based Compensation

The Company accounts for stock-based compensation expense in accordance with ASC 718, Compensation—Stock Compensation, which requires the measurement and recognition of compensation expense for share-based awards based on the estimated fair value on the date of grant. The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model. The Black-Scholes option valuation model incorporates assumptions as to dividend yield, volatility, an appropriate risk-free interest rate and the expected life of the option.

Restricted stock units (“RSUs”) are stock awards that entitle the holder to receive shares of the Company’s common stock as the award vests over time. The fair value of each restricted stock unit award is estimated using the intrinsic value method which is based on the fair market value price on the date of grant. Compensation expense for restricted stock awards is recognized ratably over the vesting period on a straight-line basis.

Income Taxes

Income Taxes

Significant judgment is required in determining the provision for income taxes and, in particular, any valuation allowance recorded against our deferred tax assets. Our methodology for determining the realizability of deferred tax assets involves estimates of future taxable income from our operations and consideration of available tax planning strategies and actions that would be implemented by us, if necessary, as well as the expiration dates and amounts of carryforwards related to net operating losses and capital losses. These estimates are projected through the life of the related deferred tax assets based on assumptions that we believe to be reasonable and consistent with demonstrated operating results. The projection also includes consideration of the reversal of deferred tax liabilities that are in the same period and jurisdiction and are of the same character as the temporary differences that gave rise to the deferred tax assets. Changes in future operating results not currently forecasted may have a significant impact on the realization of deferred tax assets. During 2011, the Company determined that historical operating results and future projections gave rise to sufficient positive evidence to conclude that it is more likely than not that a substantial portion of its deferred tax assets are realizable.

Uncertain tax positions taken by the Company are accounted for under ASC 740, Income Taxes, which may require certain benefits taken on a tax return to not be recognized in the financial statements when there is the potential for certain tax positions to be successfully challenged by the taxing authorities.

Comprehensive Income

Comprehensive Income

The Company reports all changes in comprehensive income in the Consolidated Statements of Changes in Stockholders’ Equity and Comprehensive Income. Comprehensive income includes net income (loss) attributable to common shareholders and unrealized gains and losses on investments classified as available-for-sale (net of tax).

Earnings Per Share

Earnings Per Share

Earnings per share (“EPS”) is calculated in accordance with ASC 260, Earnings per Share. Net income per common share reflects application of the two-class method. Basic EPS excludes dilution for potential common stock issuances and is computed by dividing basic net income available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. For the calculation of diluted EPS, the basic weighted average number of shares is increased by the dilutive effect of restricted stock units and common stock options using the treasury stock method.

Under the two-class method, during periods of net income, participating securities are allocated a proportional share of net income. During periods of net loss, no effect is given to participating securities since they do not share in the losses of the Company. Participating securities have the effect of diluting both basic and diluted EPS during periods of net income. All of the outstanding shares of the Company’s Series B Preferred Stock were converted to common stock in January 2012.

Fair Value Measurements and Fair Value of Financial Instruments

Fair Value Measurements and Fair Value of Financial Instruments

The FASB defines fair value as the price that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. ASC 820, Fair Value Measurements and Disclosures establishes a framework for measuring fair value and a valuation hierarchy based upon the transparency of inputs used in the valuation of an asset or liability. Classification within the hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The valuation hierarchy contains three levels as follows:

Level 1 – Quoted prices for identical instruments in active markets. Level 1 assets and liabilities may include debt securities and equity securities that are traded in an active exchange market.

Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Level 2 inputs may include observable market data such as closing market prices provided by independent pricing services after considering factors such as the yields or prices of comparable investments of comparable quality, coupon, maturity, call rights and other potential prepayments, terms and type, reported transactions, indications as to values from dealers and general market conditions. In addition, pricing services may determine the fair value of equity securities traded principally in foreign markets when it has been determined that there has been a significant trend in the U.S. equity markets or in index futures trading. Level 2 assets and liabilities may include debt and equity securities, purchased loans and over-the-counter derivative contracts whose fair value is determined using a pricing model without significant unobservable market data inputs.

Level 3 – Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable in active exchange markets.

The following is a discussion of the valuation methodologies used for assets measured at fair value.

Sponsored mutual funds and variable insurance funds include amounts in affiliated investment products. The fair value of these securities are generally determined based on their published net asset values and are included as Level 1 within the hierarchy.

Investments of consolidated sponsored investment products include debt and equity securities held in portfolios of sponsored funds that are consolidated by the Company. Equity securities are valued at the official closing price on the exchange on which the securities are traded and categorized as Level 1 in the hierarchy. Certain non-U.S. securities may be fair valued in cases where closing prices are not readily available or are deemed to not reflect readily available market prices. In such cases, the fair value is determined using an independent pricing service and fair valuations are categorized as Level 2 in the hierarchy. Most debt securities are valued based on quotations received from independent pricing services or from dealers who make markets in such securities. These investments are generally categorized as Level 2 in the hierarchy. Pricing services do not provide pricing for all securities and therefore indicative bids from dealers are utilized which are based on pricing models used by market makers in the security and are generally categorized as Level 2 in the hierarchy.

Equity securities include securities traded on active markets and are valued at the official closing price (typically last sale) on the exchange on which the securities are primarily traded, or if no closing price is available, at the last bid price and are categorized as Level 1 in the hierarchy.

Sponsored closed-end funds include amounts in affiliated investment products. These investments are valued as Level 1 within the valuation hierarchy because they are valued through the use of quoted market prices available in active markets.

Nonqualified retirement plan assets include mutual funds whose fair value is generally determined based on their published net asset value. They are classified as Level 1 within the valuation hierarchy.

Cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities equal or approximate fair value based on the short-term nature of these instruments. The estimated fair value of long-term debt at December 31, 2012, which has a variable interest rate, approximates its carrying value. Marketable securities are reflected in the financial statements at fair value based upon publicly quoted market prices.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In May 2011, the FASB issued ASU No. 2011-04, Fair Value Measurement: Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS, and the International Accounting Standards Board issued International Financial Reporting Standard (“IFRS”) 13, Fair Value Measurement (together, the new guidance). The new guidance results in a consistent definition of fair value and common requirements for measurement of and disclosure about fair value between U.S. GAAP and IFRS. The new guidance changes some fair value measurement principles and disclosure requirements. The Company has adopted this ASU as of January 1, 2012.

In June 2011, the FASB issued ASU No. 2011-05, Presentation of Comprehensive Income, which eliminates the current option to report other comprehensive income and its components in the statement of changes in equity and allows an entity to elect to present items of net income and other comprehensive income in one continuous statement or in two separate, but consecutive, statements. The Company has adopted this ASU as of January 1, 2012.

In July 2012, the FASB issued ASU No. 2012-02, Testing Indefinite-Lived Intangible Assets for Impairment. The standard provides entities with an option to perform a qualitative assessment of indefinite-lived intangible assets other than goodwill for impairment to determine if additional impairment testing is necessary. The standard is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012, however early adoption is allowed. The Company has adopted this ASU as of September 30, 2012.

In August 2012, the FASB issued ASU No. 2012-03, Technical Amendments and Corrections to SEC Sections: Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin (“SAB”) No. 114, Technical Amendments Pursuant to SEC Release No. 33-9250, and Corrections Related to FASB Accounting Standards Update 2010-22. This update amends various SEC paragraphs pursuant to the issuance of SAB No. 114. The adoption of ASU 2012-03 is not expected to have a material impact on the Company’s financial position or results of operations.

In October 2012, the FASB issued ASU No. 2012-04, Technical Corrections and Improvements. This update amends source literature, clarifies guidance and reference corrections and relocates some guidance within the Codification. The adoption of ASU 2012-04 is not expected to have a material impact on the Company’s financial position or results of operations.

In February 2013, the FASB issued ASU No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. Under ASU 2013-02, an entity is required to provide information about the amounts reclassified out of Accumulated Other Comprehensive Income (“AOCI”) by component. In addition, an entity is required to present, either on the face of the financial statements or in the notes, significant amounts reclassified out of AOCI by the respective line items of net income, but only if the amount reclassified is required to be reclassified in its entirety in the same reporting period. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about those amounts. ASU 2013-02 does not change the current requirements for reporting net income or other comprehensive income in the financial statements. This standard is effective for the Company’s first quarter of fiscal year 2013. The adoption of this new guidance will require additional disclosures and presentation of items impacting other comprehensive income but will not have an impact on our consolidated financial statements.