Cohen & Steers (CNS) 10-Q 6 Nov 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	9 Months Ended
	Sep. 30, 2015	Nov. 03, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	COHEN & STEERS INC
Entity Central Index Key	1,284,812
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		45,436,698

Condensed Consolidated Statemen

Condensed Consolidated Statements of Financial Condition (Unaudited) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents		$ 146,247	$ 124,938
Trading investments	[1]	12,851	9,509
Equity method investments		6,309	28,550
Available-for-sale investments		30,531	21,269
Accounts receivable		52,225	43,392
Due from broker		6,111	1,805
Income tax receivable		4,033	56
Property and equipment—net		9,894	11,189
Goodwill and intangible assets—net		19,798	20,732
Deferred income tax asset—net		2,941	15,108
Other assets		5,083	4,173
Total assets		296,023	280,721
Liabilities:
Accrued compensation		22,175	28,300
Deferred rent		6,089	5,728
Due to broker		4,497	5
Income tax payable		1,508	4,141
Other liabilities and accrued expenses		15,092	13,959
Total liabilities		$ 49,361	$ 52,133
Commitments and contingencies
Redeemable noncontrolling interest		$ 720	$ 607
Stockholders’ equity:
Common stock, $0.01 par value; 500,000,000 shares authorized; 49,684,690 and 48,593,812 shares issued at September 30, 2015 and December 31, 2014, respectively		497	486
Additional paid-in capital		512,943	489,266
Accumulated deficit		(118,914)	(142,786)
Accumulated other comprehensive loss, net of tax		(11,947)	(1,582)
Less: Treasury stock, at cost, 4,250,476 and 3,800,920 shares at September 30, 2015 and December 31, 2014, respectively		(136,637)	(117,403)
Total stockholders’ equity		245,942	227,981
Total liabilities and stockholders’ equity		$ 296,023	$ 280,721
[1]	Includes $535 and $650 held as collateral attributable to the consolidated balances of Cohen & Steers Active Commodities Strategy Fund, Inc. (CDF) as of September 30, 2015 and December 31, 2014, respectively.

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	500,000,000	500,000,000
Common Stock, shares issued	49,684,690	48,593,812
Treasury Stock, shares	4,250,476	3,800,920
Trading investments pledged as collateral
Trading investments and pledged as collateral	$ 535	$ 650

Condensed Consolidated Stateme4

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue:
Investment advisory and administration fees	$ 73,487	$ 75,210	$ 228,460	$ 215,681
Distribution and service fees	3,961	3,738	11,881	10,952
Portfolio consulting and other	2,219	1,897	6,643	5,459
Total revenue	79,667	80,845	246,984	232,092
Expenses:
Employee compensation and benefits	25,892	26,679	80,270	76,590
Distribution and service fees	8,578	9,048	27,354	26,608
General and administrative	12,175	11,313	37,463	34,471
Depreciation and amortization	1,545	1,478	4,700	4,832
Total expenses	48,190	48,518	149,787	142,501
Operating income	31,477	32,327	97,197	89,591
Non-operating income:
Interest and dividend income—net	291	610	1,040	1,441
(Loss) gain from seed investments—net	(2,993)	(3,501)	(2,815)	3,736
Other losses	(270)	(666)	(952)	(563)
Total non-operating (loss) income	(2,972)	(3,557)	(2,727)	4,614
Income before provision for income taxes	28,505	28,770	94,470	94,205
Provision for income taxes	11,541	10,733	35,961	33,644
Net income	16,964	18,037	58,509	60,561
Less: Net loss (income) attributable to redeemable noncontrolling interest	129	147	163	(749)
Net income attributable to common stockholders	$ 17,093	$ 18,184	$ 58,672	$ 59,812
Earnings per share attributable to common stockholders:
Basic (in dollars per share)	$ 0.38	$ 0.41	$ 1.29	$ 1.34
Diluted (in dollars per share)	0.37	0.40	1.28	1.31
Dividends declared per share (in dollars per share)	$ 0.25	$ 0.22	$ 0.75	$ 0.66
Weighted average shares outstanding:
Basic (shares)	45,500	44,839	45,402	44,766
Diluted (shares)	45,830	45,689	45,873	45,568

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 16,964	$ 18,037	$ 58,509	$ 60,561
Less: Net loss (income) attributable to redeemable noncontrolling interest	129	147	163	(749)
Net income attributable to common stockholders	17,093	18,184	58,672	59,812
Foreign currency translation loss (net of tax of $0)	(748)	(2,256)	(1,292)	(2,105)
Net unrealized (loss) gain from available-for-sale investments (net of tax of $0)	(6,859)	254	(9,122)	1,835
Reclassification to statements of operations of loss (gain) from available-for-sale investments (net of tax of $0)	469	(760)	49	(1,888)
Other comprehensive loss	(7,138)	(2,762)	(10,365)	(2,158)
Total comprehensive income attributable to common stockholders	$ 9,955	$ 15,422	$ 48,307	$ 57,654

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Comprehensive Income (Unaudited) Condensed Statements of Comprehensive Income - Parenthetical - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Income tax expense on foreign currency translation Adjustments	$ 0	$ 0	$ 0	$ 0
Income tax expense on net unrealized gain (loss) from available-for-sale investments	0	0	0	0
Income tax expense on reclassification to statements of operations of gain (loss) from available-for-sale investments	$ 0	$ 0	$ 0	$ 0

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Changes in Stockholders' Equity and Redeemable Noncontrolling Interest (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stocks	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss), Net of Tax	Treasury Stock	Total Stockholders' Equity	Redeemable Noncontrolling Interest
Beginning balance at Dec. 31, 2013		$ 477	$ 457,138	$ (131,366)	$ 2,989	$ (105,681)	$ 223,557
Beginning balance (redeemable noncontrolling interest) at Dec. 31, 2013								$ 207
Beginning balance (shares of common stock, net) at Dec. 31, 2013		44,254
Dividends		$ 0	0	(30,229)	0	0	(30,229)
Issuance of common stock		$ 9	467	0	0	0	476	0
Issuance of common stock, shares		851
Repurchase of common stock		$ 0	0	0	0	(11,685)	(11,685)	0
Repurchase of common stock, shares		(318)
Tax benefits associated with restricted stock units—net		$ 0	2,849	0	0	0	2,849	0
Issuance of restricted stock units		0	920	0	0	0	920	0
Amortization of restricted stock units—net		0	18,461	0	0	0	18,461	0
Net income (loss)	$ 60,561	0	0	59,812	0	0	59,812	749
Other comprehensive income (loss), net of tax	(2,158)	0	0	0	(2,158)	0	(2,158)	0
Contributions from redeemable noncontrolling interest	23,977	0	0	0	0	0	0	23,977
Distributions to redeemable noncontrolling interest		0	0	0	0	0	0	(4,958)
Transfer of redeemable noncontrolling interest in consolidated entity		0	0	0	0	0	0	(209)
Ending balance at Sep. 30, 2014		$ 486	479,835	(101,783)	831	(117,366)	262,003
Ending balance (redeemable noncontrolling interest) at Sep. 30, 2014								19,766
Ending balance (shares of common stock, net) at Sep. 30, 2014		44,787
Beginning balance at Dec. 31, 2014	227,981	$ 486	489,266	(142,786)	(1,582)	(117,403)	227,981
Beginning balance (redeemable noncontrolling interest) at Dec. 31, 2014								607
Beginning balance (shares of common stock, net) at Dec. 31, 2014		44,793
Dividends		$ 0	0	(34,800)	0	0	(34,800)
Issuance of common stock		$ 11	519	0	0	0	530	0
Issuance of common stock, shares		1,091
Repurchase of common stock		$ 0	0	0	0	(19,234)	(19,234)	0
Repurchase of common stock, shares		(450)
Tax benefits associated with restricted stock units—net		$ 0	5,065	0	0	0	5,065	0
Issuance of restricted stock units		0	1,047	0	0	0	1,047	0
Amortization of restricted stock units—net		0	17,046	0	0	0	17,046	0
Net income (loss)	58,509	0	0	58,672	0	0	58,672	$ (163)
Other comprehensive income (loss), net of tax	(10,365)	0	0	0	(10,365)	0	(10,365)
Contributions from redeemable noncontrolling interest	283	0	0	0	0	0	0	$ 283
Distributions to redeemable noncontrolling interest		0	0	0	0	0	0	(7)
Ending balance at Sep. 30, 2015	$ 245,942	$ 497	$ 512,943	$ (118,914)	$ (11,947)	$ (136,637)	$ 245,942
Ending balance (redeemable noncontrolling interest) at Sep. 30, 2015								$ 720
Ending balance (shares of common stock, net) at Sep. 30, 2015		45,434

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 58,509	$ 60,561
Adjustments to reconcile net income to net cash provided by operating activities:
Stock compensation expense	17,123	18,535
Depreciation and amortization	4,700	4,832
Deferred rent	361	1,434
Loss (gain) from seed investments—net	2,815	(3,736)
Deferred income taxes	9,897	647
Foreign currency (gain) loss	(187)	1,798
Changes in operating assets and liabilities:
Accounts receivable	(8,646)	(11,860)
Due from broker	(4,306)	(2,157)
Deferred commissions	(1,812)	(1,426)
Trading investments	(4,974)	(42,653)
Income tax receivable	(3,977)	106
Other assets	(200)	(573)
Accrued compensation	(6,100)	(4,049)
Due to broker	4,492	0
Income tax payable	(41)	(3,850)
Other liabilities and accrued expenses	700	1,312
Net cash provided by operating activities	68,354	18,921
Cash flows from investing activities:
Proceeds from redemptions of equity method investments—net	4	10,894
Purchases of available-for-sale investments	(4,106)	(6,051)
Proceeds from sales of available-for-sale investments	6,956	10,969
Purchases of property and equipment	(1,640)	(4,889)
Net cash provided by investing activities	1,214	10,923
Cash flows from financing activities:
Excess tax benefits associated with restricted stock units	4,736	2,537
Issuance of common stock	450	405
Repurchase of common stock	(19,234)	(11,685)
Dividends to stockholders	(34,078)	(29,562)
Distributions to redeemable noncontrolling interest	(7)	(4,958)
Contributions from redeemable noncontrolling interest	283	23,977
Net cash used in financing activities	(47,850)	(19,286)
Net increase in cash and cash equivalents	21,718	10,558
Effect of foreign exchange rate changes on cash and cash equivalents	(409)	(1,028)
Cash and cash equivalents, beginning of the period	124,938	128,277
Cash and cash equivalents, end of the period	$ 146,247	$ 137,807

Condensed Consolidated Stateme9

Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Cash Flows [Abstract]
Income taxes paid, net	$ (25,307)	$ (34,209)
Fully vested restricted stock units issued	325	252
Restricted stock unit dividend equivalents, net of forfeitures	722	$ 667
Equity Method Investments, Non-Cash Reclassifications	$ 21,103

Organization and Description of

Organization and Description of Business	9 Months Ended
	Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	Organization and Description of Business Cohen & Steers, Inc. (CNS) was organized as a Delaware corporation on March 17, 2004. CNS is the holding company for its direct and indirect subsidiaries, including Cohen & Steers Capital Management, Inc. (CSCM), Cohen & Steers Securities, LLC (CSS), Cohen & Steers Asia Limited (CSAL), Cohen & Steers UK Limited (CSUK) and Cohen & Steers Japan, LLC (collectively, the Company). The Company is a global investment manager specializing in liquid real assets, including real estate securities, listed infrastructure, commodities and natural resource equities, as well as preferred securities and other income solutions. Founded in 1986, the Company is headquartered in New York City, with offices in London, Hong Kong, Tokyo and Seattle.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies The condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). The condensed consolidated financial statements set forth herein include the accounts of CNS and its direct and indirect subsidiaries. Intercompany balances and transactions have been eliminated in consolidation. The condensed consolidated financial statements of the Company included herein are unaudited and have been prepared in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). In the opinion of management, all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of the interim results have been made. The Company’s condensed consolidated financial statements and the related notes should be read together with the consolidated financial statements and the related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014 . Accounting Estimates —The preparation of the condensed consolidated financial statements in conformity with GAAP 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 condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting periods. Management believes the estimates used in preparing the condensed consolidated financial statements are reasonable and prudent. Actual results could differ from those estimates. Reclassifications —Certain prior year amounts have been reclassified to conform to the current year presentation. On the condensed consolidated statements of operations and the condensed consolidated statements of cash flows, the captions “gain (loss) from trading investments—net”, “gain (loss) from available-for-sale investments—net” and “equity in earnings (losses) of affiliates” have been combined into a single caption “gain (loss) from seed investments—net”. The breakdown of these amounts is provided in Note 4, Investments. Consolidation —The Company consolidates operating entities deemed to be voting interest entities if the Company owns a majority of the voting interest. The Company also consolidates any variable interest entities (VIEs) in which the Company is the primary beneficiary. The Company records noncontrolling interests in consolidated subsidiaries for which the Company’s ownership is less than 100 percent. The equity method of accounting is used for investments in affiliates in which the Company’s ownership ranges from 20 to 50 percent, or instances in which the Company is able to exercise significant influence but not control. 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. Investments and redemptions or amendments to the governing documents of the respective entities could affect an entity's status as a VIE or the determination of the primary beneficiary. The Company assesses whether entities in which it has an interest are VIEs upon initial involvement and at each reporting date. The Company assesses whether it is the primary beneficiary of any VIEs identified by evaluating its economic interests in the entity held either directly by the Company and its affiliates or indirectly through employees. See Note 4 for further discussion about the Company’s investments. Cash and Cash Equivalents —Cash equivalents consist of short-term, highly liquid investments, which are readily convertible into cash and have original maturities of three months or less. Due from/to Broker —The Company conducts business, primarily with respect to its consolidated seed investments, with brokers for certain of its investment activities. The clearing and custody operations for these investment activities are performed pursuant to contractual agreements. The due from/to broker balance represents cash and cash equivalents balances at brokers/custodians and/or net receivables and payables for unsettled security transactions. Investments —Management of the Company determines the appropriate classification of its investments at the time of purchase and re-evaluates such determination at each statement of financial condition date. Investments classified as trading represent securities held within the affiliated funds that the Company consolidates and are measured at fair value based on quoted market prices, market prices obtained from independent pricing services engaged by management or as determined by the Company’s valuation committee. Unrealized gains and losses are recorded as gain (loss) from seed investments—net in the Company’s condensed consolidated statements of operations. Investments classified as equity method investments represent seed investments that are accounted for using the equity method, under which the Company recognizes its respective share of the investee’s net income or loss for the period as gain (loss) from seed investments—net in the Company’s condensed consolidated statements of operations. As of September 30, 2015 , the Company's equity method investments consisted of interests in affiliated funds which measure their underlying investments at fair value and report a net asset value on a recurring basis. The carrying amounts of these investments approximate their fair value. Investments classified as available-for-sale are comprised of equity securities, investment-grade preferred instruments and investments in Company-sponsored open-end mutual funds. These investments are carried at fair value based on quoted market prices or market prices obtained from independent pricing services engaged by management, with unrealized gains and losses, net of tax, reported in accumulated other comprehensive income. The Company periodically reviews each individual security position that has an unrealized loss, or impairment, to determine if that impairment is other than temporary. If the Company believes an impairment of a security position is other than temporary, based on available quantitative and qualitative information as of the report date, the loss will be recognized as gain (loss) from seed investments—net in the Company’s condensed consolidated statements of operations. From time to time, the affiliated funds consolidated by the Company enter into derivative contracts to gain exposure to the underlying commodities markets or to hedge market and credit risks of the underlying portfolios utilizing options, total return swaps, credit default swaps and futures contracts. These instruments are measured at fair value with gains and losses recorded as gain (loss) from seed investments—net in the Company's condensed consolidated statements of operations. The fair values of these instruments are recorded in other assets or other liabilities and accrued expenses in the Company's condensed consolidated statements of financial condition. As of September 30, 2015 , none of the outstanding derivative contracts were subject to a master netting agreement or other similar arrangement. Additionally, from time to time, the Company enters into foreign exchange contracts to hedge its currency exposure related to certain client receivables. These instruments are measured at fair value with gains and losses recorded in other non-operating income in the Company's condensed consolidated statements of operations. The fair values of these contracts are recorded in other assets or other liabilities and accrued expenses in the Company's condensed consolidated statements of financial condition. Goodwill and Intangible Assets —Goodwill represents the excess of the cost of the Company’s investment in the net assets of an acquired company over the fair value of the underlying identifiable net assets at the date of acquisition. Goodwill and indefinite lived intangible assets are not amortized but are tested at least annually for impairment by comparing the fair value to their carrying amounts. Finite lived intangible assets are amortized over their useful lives and are tested for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. See Note 3 for further discussion about the Company’s goodwill and intangible assets. Redeemable Noncontrolling Interest —Redeemable noncontrolling interest represents third-party interests in the Company's consolidated entities. This interest is redeemable at the option of the investors and therefore is not treated as permanent equity. Redeemable noncontrolling interest is remeasured at redemption value which approximates the fair value at each reporting period. Investment Advisory and Administration Fees —The Company earns revenue by providing asset management services to institutional accounts and to Company-sponsored open-end mutual funds and closed-end funds. Investment advisory fees are earned pursuant to the terms of investment management agreements, and are based on a contractual fee rate applied to the assets in the portfolio. The Company also earns administration fees from certain Company-sponsored open-end mutual funds and closed-end funds pursuant to the terms of underlying administration contracts. Administration fees are based on the average assets under management of such funds. Investment advisory and administration fee revenue is recognized as such fees are earned. Distribution and Service Fee Revenue —CSS acts as the principal distributor of the Company’s sponsored open-end mutual funds which may offer the following classes: Class A (initial sales load), Class C (back end sales load), Class R (load retirement) and Class Z (no load retirement). Effective May 2007, the Company suspended sales of Class B shares and all remaining Class B shares converted to Class A shares in 2015. Distribution and service fee revenue is based on the average daily net assets of the funds as detailed below. Distribution and service fee revenue is earned daily and is recorded gross of any third-party distribution and service fee expense for applicable share classes. Pursuant to distribution plans with the Company's sponsored open-end mutual funds, CSS receives distribution fees of up to 25bps for Class A shares, 75bps for Class C shares and 50bps for Class R shares. CSS also receives shareholder servicing fees of up to 10bps on Class A shares, 25bps on Class C shares and 15bps on Class Z shares, pursuant to shareholder servicing plans with the funds. Effective October 1, 2014, the Company no longer receives shareholder servicing fees on Class Z shares. Distribution and Service Fee Expense —Distribution and service fee expense includes distribution fees, service fees and intermediary assistance payments. Distribution and service fee expense is recorded as incurred. Distribution fee expense represents payments made to qualified dealers/institutions for (i) assistance in connection with the distribution of the Company's sponsored open-end mutual funds' shares and (ii) for other expenses such as advertising costs and printing and distribution of prospectuses to investors. Such amounts may also be used to pay financial intermediaries for services as specified in the terms of written agreements complying with Rule 12b-1 of the Investment Company Act of 1940 (Rule 12b-1). CSS pays distribution fee expense based on the average daily net assets under management of up to 25bps on Class A shares, 75bps on Class C shares and 50bps on Class R shares. Shareholder servicing fee expense represents payments made to qualified dealers/institutions for shareholder account service and maintenance. These services are provided pursuant to written agreements with such qualified institutions. CSS pays service fee expenses based on the average daily net assets under management of up to 10bps on Class A shares, 25bps on Class C shares and 15bps on Class Z shares. Effective October 1, 2014, the Company no longer pays shareholder service fees on Class Z shares. Intermediary assistance payments represent payments to qualified dealers/institutions for activities related to distribution, shareholder servicing and marketing and support of Company-sponsored open-end mutual funds and are incremental to those described above. Intermediary assistance payments are generally based on the average assets under management or the number of accounts being serviced. Portfolio Consulting and Other —The Company earns portfolio consulting and other fees by: (i) providing portfolio consulting services in connection with model-based strategy accounts; (ii) earning a licensing fee for the use of the Company's proprietary indexes; and (iii) providing portfolio monitoring services related to a number of unit investment trusts. This revenue is earned pursuant to the terms of the underlying contract, and the fee schedules for these relationships vary based on the type of services the Company provides for each relationship. This revenue is recognized as such fees are earned. Stock-based Compensation —The Company recognizes compensation expense for the grant-date fair value of awards of equity instruments to employees. This expense is recognized over the period during which employees are required to provide service. The Company also estimates forfeitures. Income Taxes —The Company records the current and deferred tax consequences of all transactions that have been recognized in the condensed consolidated financial statements in accordance with the provisions of the enacted tax laws. Deferred tax assets are recognized for temporary differences that will result in deductible amounts in future years at tax rates that are expected to apply in those years. Deferred tax liabilities are recognized for temporary differences that will result in taxable income in future years at tax rates that are expected to apply in those years. The Company records a valuation allowance, when necessary, to reduce deferred tax assets to an amount that more likely than not will be realized. The effective tax rate for interim periods represents the Company’s best estimate of the effective tax rate expected to be applied to the full fiscal year. Currency Translation and Transactions —Assets and liabilities of subsidiaries having non-U.S. dollar functional currencies are translated at exchange rates at the applicable condensed consolidated statement of financial condition date. Revenue and expenses of such subsidiaries are translated at average exchange rates during the period. The gains or losses resulting from translating non-U.S. dollar functional currency into U.S. dollars are included in the Company's condensed consolidated statements of comprehensive income. The cumulative translation adjustment was $(2,738,000) and $(1,446,000) as of September 30, 2015 and December 31, 2014 , respectively. Gains or losses resulting from non-U.S. dollar currency transactions are included in other non-operating income in the condensed consolidated statements of operations. Comprehensive Income —The Company reports all changes in comprehensive income in the condensed consolidated statements of comprehensive income. Comprehensive income includes net income or loss attributable to common stockholders, foreign currency translation gain and loss (net of tax), unrealized gain and loss from available-for-sale investments (net of tax) and reclassification to statements of operations of gain and loss from available-for-sale investments (net of tax). Recently Issued Accounting Pronouncements —In May 2015, the Financial Accounting Standards Board (FASB) issued new guidance amending the current disclosure requirement for investments in certain entities that calculate net asset value per share. The guidance requires investments for which fair value is measured using the net asset value per share practical expedient be removed from the fair value hierarchy. Instead, those investment amounts shall be provided as a separate item to permit reconciliation of the fair value of investments included in the fair value hierarchy to the line items presented in the statement of financial position. This new guidance will be effective for the Company’s first quarter of 2016. The Company does not anticipate that the adoption of this new guidance will have a material impact on its condensed consolidated financial statements. In February 2015, the FASB issued new guidance amending the current accounting for consolidation of certain legal entities. These amendments modify the evaluation of whether limited partnerships and similar legal entities are VIEs or voting interest entities, eliminate the presumption that a general partner should consolidate a limited partnership, affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships, and provide a scope exception from consolidation guidance for reporting entities with interests in certain investment funds. This new guidance will be effective for the Company’s first quarter of 2016. The Company is currently evaluating the potential impact on its condensed consolidated financial statements and related disclosures. In August 2014, the FASB issued new guidance regarding disclosure of going concern uncertainties in the financial statements. The guidance requires management to evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the entity's ability to continue as a going concern within one year after the date that the financial statements are issued at each annual and interim reporting period. This new guidance will be effective for the Company’s first quarter of 2017. The Company does not anticipate that the adoption of this new guidance will have a material impact on its condensed consolidated financial statements. In May 2014, the FASB issued new guidance which outlined a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers. The core principle of the revenue model is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This new guidance will be effective for the Company's first quarter of 2018 and requires either a retrospective or a modified retrospective approach to adoption. The Company is currently evaluating the potential impact on its condensed consolidated financial statements and related disclosures, as well as the available transition methods.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill Goodwill represents the excess of purchase price over the net tangible assets and identifiable intangible assets of an acquired business. At September 30, 2015 and December 31, 2014 , goodwill was approximately $18,252,000 and $19,120,000 , respectively. The Company’s goodwill decreased by $868,000 for the nine months ended September 30, 2015 as a result of foreign currency revaluation. Intangible Assets The following table details the gross carrying amounts and accumulated amortization for the intangible assets at September 30, 2015 and December 31, 2014 (in thousands): Remaining Amortization Period (in months) Gross Carrying Amount Accumulated Amortization Intangible Assets, Net September 30, 2015: Amortized intangible assets: Client relationships 39 $ 1,543 $ (1,247 ) $ 296 Non-amortized intangible assets: Mutual fund management contracts — 1,250 — 1,250 Total $ 2,793 $ (1,247 ) $ 1,546 December 31, 2014: Amortized intangible assets: Client relationships 48 $ 1,543 $ (1,181 ) $ 362 Non-amortized intangible assets: Mutual fund management contracts — 1,250 — 1,250 Total $ 2,793 $ (1,181 ) $ 1,612 Amortization expense related to the intangible assets was approximately $22,000 for both the three months ended September 30, 2015 and 2014 , respectively, and approximately $66,000 for both the nine months ended September 30, 2015 and 2014 , respectively. Estimated future amortization expense is as follows (in thousands): Periods Ending December 31, Estimated Amortization Expense 2015 $ 23 2016 89 2017 89 2018 95 2019 — Total $ 296

Investments

Investments	9 Months Ended
	Sep. 30, 2015
Investments [Abstract]
Investments	Investments The following is a summary of the Company's investments as of September 30, 2015 and December 31, 2014 (in thousands): September 30, 2015 December 31, 2014 Trading investments $ 12,851 $ 9,509 Equity method investments 6,309 28,550 Available-for-sale investments 30,531 21,269 Gain (loss) from seed investments for the three and nine months ended September 30, 2015 and 2014 are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 (Loss) gain from trading investments—net (1) $ (1,386 ) $ (2,690 ) $ (1,632 ) $ 1,055 Equity in (losses) earnings of affiliates (1,138 ) (1,571 ) (1,134 ) 793 (Loss) gain from available-for-sale investments—net (469 ) 760 (49 ) 1,888 Total (loss) gain from seed investments—net $ (2,993 ) $ (3,501 ) $ (2,815 ) $ 3,736 Number of new funds seeded 1 — 1 1 _________________________ (1) Includes net income/(loss) attributable to redeemable noncontrolling interest for the periods presented. The Cohen & Steers SICAV Global Listed Infrastructure Fund (GLI SICAV), a Luxembourg-domiciled undertaking for collective investments in transferable securities (UCITS), was launched by the Company in September 2015, and meets the definition of an investment company. The Company is the investment adviser of GLI SICAV for which it receives a management fee. GLI SICAV is a VIE and the Company is the primary beneficiary. As of September 30, 2015 , the Company was the only investor in the fund and therefore, the Company would absorb all of the expected losses and residual returns. Accordingly, the underlying assets and liabilities and results of operations of GLI SICAV have been included in the Company's condensed consolidated financial statements. The following represents the portion of the condensed consolidated statements of financial condition attributable to the consolidated GLI SICAV as of September 30, 2015 . The assets may only be used to settle obligations of GLI SICAV and the liabilities are the sole obligation of GLI SICAV, for which creditors do not have recourse to the general credit of the Company (in thousands): September 30, 2015 Assets: Trading investments $ 4,830 Due from broker 4,556 Other assets 48 Total assets $ 9,434 Liabilities: Due to broker $ 4,502 Other liabilities and accrued expenses 24 Total liabilities $ 4,526 The Cohen & Steers Active Commodities Strategy Fund, Inc. (CDF) is a voting interest entity. CDF was launched by the Company in May 2014 and is an open-end mutual fund for which the Company is the investment adviser. As of September 30, 2015 , the Company owned the majority of the outstanding voting interest in CDF. Accordingly, the underlying assets and liabilities and results of operations of CDF have been included in the Company's condensed consolidated financial statements with the third-party interests classified as redeemable noncontrolling interest. The Cohen & Steers Active Commodities Fund, LP (ACOM), launched by the Company in April 2013, is structured as a partnership. The Company is the investment adviser of ACOM for which it is entitled to receive a management fee. The Company owned all of the voting interest in ACOM through September 30, 2014. Accordingly, the underlying assets and liabilities and results of operations of ACOM had been included in the Company's condensed consolidated financial statements. As a result of third-party investments into the fund, effective October 1, 2014, the Company no longer held a controlling financial interest in ACOM. The Company determined that ACOM was not a VIE as the limited partners, unaffiliated with the Company, have the ability to liquidate the fund with a majority vote. As a result, the Company does not have financial control and ACOM is not consolidated into the Company's condensed consolidated financial statements. The Company's equity interest in ACOM represents a seed investment to launch the fund, adjusted for the Company's proportionate share of the fund's earnings. As of September 30, 2015 , the Company's ownership in ACOM was approximately 11% ; however, as the general partner, the Company has significant influence over the financial decisions of ACOM and therefore records its investment in ACOM using the equity method of accounting. Cohen & Steers Global Realty Partners III-TE, L.P. (GRP-TE), which had its closing in October 2011, is structured as a partnership. The Company is the general partner and investment adviser of GRP-TE, for which it receives a management fee and is entitled to receive an incentive distribution, if earned. GRP-TE is a VIE and the Company is not the primary beneficiary. As the general partner, the Company has significant influence over the financial decisions of GRP-TE and therefore records its investment using the equity method of accounting. The Company's equity interest in GRP-TE represents a seed investment to launch the fund, adjusted for the Company’s proportionate share of the fund’s earnings. As of September 30, 2015 , the Company's ownership in GRP-TE was approximately 0.2% . The Company's risk with respect to its investment in GRP-TE is limited to its equity ownership and any uncollected management fees. In conjunction with the launch of GRP-TE, the Company established Cohen & Steers Co-Investment Partnership, L.P. (GRP-CIP), which is used by the Company to fulfill its contractual commitment to co-invest with GRP-TE. See Note 11 for further discussion regarding the Company's co-investment commitment. As of September 30, 2015 , the Company owned all of the voting interest in GRP-CIP. Accordingly, the underlying assets and liabilities and results of operations of GRP-CIP have been included in the Company's condensed consolidated financial statements. The Cohen & Steers MLP & Energy Opportunity Fund, Inc. (MLO) is a voting interest entity. MLO was launched by the Company in December 2013 and is an open-end mutual fund for which the Company is the investment adviser. The Company owned the majority of the outstanding voting interest in MLO through October 31, 2014. Accordingly, the underlying assets and liabilities and results of operations of MLO had been included in the Company's condensed consolidated financial statements with the third-party interests classified as redeemable noncontrolling interest. During the period of November 1, 2014 through April 30, 2015, as a result of additional third-party subscriptions into the fund, the Company no longer owned the majority of the outstanding voting interest in MLO, however it was determined that the Company had significant influence over MLO and recorded its investment in MLO using the equity method of accounting. Effective May 1, 2015, the Company's ownership interest in MLO fell below 20% and the Company no longer has significant influence over MLO. Accordingly, the Company began recording its investment in MLO as an available-for-sale investment. Cohen & Steers Real Assets Fund, Inc. (RAP) is a voting interest entity. RAP was launched by the Company on January 31, 2012 and is an open-end mutual fund for which the Company is the investment adviser. During the period of August 1, 2013 through September 30, 2014, the Company did not hold a controlling financial interest in RAP, however it was determined that the Company had significant influence over RAP. Accordingly, the Company recorded its investment in RAP using the equity method of accounting. Effective September 30, 2014, the Company's ownership interest in RAP fell below 20% and the Company no longer has significant influence over RAP. Accordingly, the Company began recording its investment in RAP as an available-for-sale investment. The Company owned the majority of the voting interests in Cohen & Steers Global Real Estate Long-Short Fund, L.P. (the Onshore Fund) prior to its liquidation in April 2014. Accordingly, the underlying assets and liabilities and results of operations of the Onshore Fund had been included in the Company's condensed consolidated financial statements. The Onshore Fund was structured as a partnership and the Company was the general partner and investment adviser of the fund. The Cohen & Steers Global Real Estate Long-Short Offshore Fund, L.P. (the Offshore Fund), which was liquidated in April 2014, was structured as a partnership. The Company was the general partner and investment adviser of the Offshore Fund for which it received a management fee and was entitled to receive a performance fee, if earned. The Company determined that the Offshore Fund was not a VIE as the limited partners, unaffiliated with the Company, had the ability to dissolve the fund with a majority vote. As a result, the Company did not have financial control and the Offshore Fund was not consolidated into the Company's condensed consolidated financial statements. As the general partner, the Company had significant influence over the financial decisions of the Offshore Fund and therefore recorded its investment in this fund using the equity method of accounting. The Company’s equity interest in the Offshore Fund represented a seed investment to launch the fund, adjusted for the Company’s proportionate share of the fund’s earnings. The following is a summary of the fair value of trading investments and equity method investments as of September 30, 2015 and December 31, 2014 (in thousands): September 30, 2015 December 31, 2014 Trading Investments Equity Method Investments Trading Investments Equity Method Investments ACOM $ — $ 6,199 $ — $ 7,612 CDF 5,710 — 7,000 — GLI SICAV 4,830 — — — GRP-CIP 2,311 — 2,509 — GRP-TE — 110 — 111 MLO — — — 20,827 Total $ 12,851 $ 6,309 $ 9,509 $ 28,550 Gain (loss) from trading investments—net for the three and nine months ended September 30, 2015 and 2014, which represent realized and unrealized gains and losses recorded by the funds the Company consolidates, are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 ACOM $ — $ (1,321 ) $ — $ (505 ) CDF (1,221 ) (1,450 ) (1,521 ) (1,404 ) GLI SICAV (98 ) — (98 ) — GRP-CIP (67 ) 5 (13 ) 168 MLO — 76 — 2,772 Onshore Fund — — — 24 Total (loss) gain from trading investments—net $ (1,386 ) $ (2,690 ) $ (1,632 ) $ 1,055 Equity in earnings (losses) of affiliates for the three and nine months ended September 30, 2015 and 2014 are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 ACOM $ (1,138 ) $ — $ (1,413 ) $ — GRP-TE — — 3 20 MLO — — 276 — Offshore Fund — 9 — 20 RAP — (1,580 ) — 753 Total equity in (losses) earnings of affiliates $ (1,138 ) $ (1,571 ) $ (1,134 ) $ 793 The following is a summary of the cost, gross unrealized gains, gross unrealized losses and fair value of available-for-sale investments as of September 30, 2015 and December 31, 2014 (in thousands): September 30, 2015 Cost Gross Unrealized Gains Gross Unrealized Losses (1) Fair Value Preferred securities $ 1,121 $ 39 $ (7 ) $ 1,153 Common stocks 4,124 160 (435 ) 3,849 Company-sponsored mutual funds 34,511 — (8,982 ) 25,529 Total available-for-sale investments $ 39,756 $ 199 $ (9,424 ) $ 30,531 _________________________ (1) At September 30, 2015 , there were no securities with unrealized losses continuously for a period of more than 12 months. December 31, 2014 Cost Gross Unrealized Gains Gross (1) Fair Value Preferred securities $ 1,043 $ 54 $ (2 ) $ 1,095 Common stocks 5,366 627 (155 ) 5,838 Company-sponsored mutual funds 15,010 4 (678 ) 14,336 Total available-for-sale investments $ 21,419 $ 685 $ (835 ) $ 21,269 __ _______________________ (1) At December 31, 2014 , there were no securities with unrealized losses continuously for a period of more than 12 months. Available-for-sale investments with a fair value of approximately $28,307,000 and $15,875,000 at September 30, 2015 and December 31, 2014 , respectively, were in an unrealized loss position. Unrealized losses on available-for-sale investments as of September 30, 2015 were generally caused by market conditions. When evaluating whether an unrealized loss on an available-for-sale investment is other than temporary, the Company reviews such factors as the extent and duration of the loss, as well as qualitative and quantitative information about the financial condition and near term prospects of the funds. As of September 30, 2015 , the Company determined that it had the ability and intent to hold the remaining investments for which no other-than-temporary impairment has occurred until a recovery of fair value. Accordingly, impairment of these investments is considered temporary. Sales proceeds, gross realized gains and losses from available-for-sale investments for the three and nine months ended September 30, 2015 and 2014 are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Proceeds from sales $ 2,942 $ 2,713 $ 7,558 $ 11,011 Gross realized gains 79 775 743 2,024 Gross realized losses (548 ) (15 ) (792 ) (136 )

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Accounting Standards Codification Topic 820, Fair Value Measurement (ASC 820) specifies a hierarchy of valuation classifications based on whether the inputs to the valuation techniques used in each valuation classification are observable or unobservable. These classifications are summarized in the three broad levels listed below: • Level 1—Unadjusted quoted prices for identical instruments in active markets. • 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. • Level 3—Valuations derived from valuation techniques in which significant inputs or significant value drivers are unobservable. Inputs used to measure fair value might fall in different levels of the fair value hierarchy, in which case the Company defaults to the lowest level input that is significant to the fair value measurement in its entirety. These levels are not necessarily an indication of the risk or liquidity associated with the investments. In determining the appropriate levels, the Company performed a detailed analysis of the assets and liabilities that are subject to ASC 820. Transfers among levels, if any, are recorded at the beginning of the reporting period. There were no transfers between level 1 and level 2 during the nine months ended September 30, 2015 . The following table presents fair value measurements as of September 30, 2015 (in thousands): Level 1 Level 2 Level 3 Total Cash equivalents (1) $ 56,631 $ — $ — $ 56,631 Trading investments Common stocks $ 4,830 $ — $ — $ 4,830 Fixed income securities — 5,710 — 5,710 Limited partnership interests — — 2,311 2,311 Total trading investments $ 4,830 $ 5,710 $ 2,311 $ 12,851 Equity method investments $ — $ 6,199 $ 110 $ 6,309 Available-for-sale investments Preferred securities $ 1,153 $ — $ — $ 1,153 Common stocks 3,849 — — 3,849 Company-sponsored mutual funds 25,529 — — 25,529 Total available-for-sale investments $ 30,531 $ — $ — $ 30,531 Derivatives - assets Commodity contracts $ 141 $ — $ — $ 141 Total derivatives - assets $ 141 $ — $ — $ 141 Derivatives - liabilities Foreign exchange contracts $ — $ 374 $ — $ 374 Commodity contracts 342 — — 342 Total derivatives - liabilities $ 342 $ 374 $ — $ 716 _________________________ (1) Comprised of investments in actively traded money market funds measured at net asset value. Trading investments classified as level 2 in the above table were primarily comprised of investments in United States Treasury Bills carried at amortized cost, which approximates fair value. Trading investments classified as level 3 in the above table were comprised of limited partnership interests which represent the Company's co-investments through GRP-CIP, which along with the Company's interest in GRP-TE, represent the Company's collective ownership interests in limited partnership vehicles that invest in non-registered real estate funds, which are valued based on the net asset values of the underlying funds, and private equity vehicles that invest directly in real estate which are generally valued using a discounted cash flow model. Equity method investments classified as level 2 in the above table represent the carrying amount of the Company's partnership interest in ACOM, which approximates its fair value based on the fund's net asset value. ACOM invests in exchange-traded commodity futures contracts and other commodity related derivatives. The Company has the ability to redeem its investment in the fund monthly at net asset value per share with prior written notice of 5 days and there are no significant restrictions to redemption. Equity method investments classified as level 3 in the above table represent the carrying amount of the Company's partnership interest in GRP-TE, which approximates its fair value based on the fund's net asset value. GRP-TE invests in non-registered real estate funds and in private equity vehicles that invest directly in real estate. As of September 30, 2015 , the Company did not have the ability to redeem its investment in GRP-TE. The following table presents fair value measurements as of December 31, 2014 (in thousands): Level 1 Level 2 Level 3 Total Cash equivalents (1) $ 59,281 $ — $ — $ 59,281 Trading investments Fixed income securities $ — $ 7,000 $ — $ 7,000 Limited partnership interests — — 2,509 2,509 Total trading investment $ — $ 7,000 $ 2,509 $ 9,509 Equity method investments $ 20,827 $ 7,612 $ 111 $ 28,550 Available-for-sale investments Preferred securities $ 1,095 $ — $ — $ 1,095 Common stocks 5,838 — — 5,838 Company-sponsored mutual funds 14,336 — — 14,336 Total available-for-sale investments $ 21,269 $ — $ — $ 21,269 Derivatives - assets Foreign exchange contracts $ — $ 505 $ — $ 505 Commodity contracts 234 — — 234 Total derivatives - assets $ 234 $ 505 $ — $ 739 Derivatives - liabilities Foreign exchange contracts $ — $ 12 $ — $ 12 Commodity contracts 754 — — 754 Total derivatives - liabilities $ 754 $ 12 $ — $ 766 _________________________ (1) Comprised of investments in actively traded money market funds measured at net asset value. Trading investments classified as level 2 in the above table were primarily comprised of investments in United States Treasury Bills carried at amortized cost, which approximates fair value. Trading investments classified as level 3 in the above table were comprised of limited partnership interests which represent the Company's co-investments through GRP-CIP, which along with the Company's interest in GRP-TE, represent the Company's collective ownership interests in limited partnership vehicles that invest in non-registered real estate funds, which are valued based on the net asset values of the underlying funds, and private equity vehicles that invest directly in real estate which are generally valued using a discounted cash flow model. Equity method investments classified as level 2 in the above table represent the carrying amount of the Company's partnership interest in ACOM, which approximates its fair value based on the fund's net asset value. ACOM invests in exchange-traded commodity futures contracts and other commodity related derivatives. The Company has the ability to redeem its investment in the fund monthly at net asset value per share with prior written notice of 5 days and there are no significant restrictions to redemption. Equity method investments classified as level 3 in the above table represent the carrying amount of the Company's partnership interests in GRP-TE, which approximate its fair value based on the fund's net asset value. GRP-TE invests in non-registered real estate funds and in private equity vehicles that invest directly in real estate. As of December 31, 2014 , the Company did not have the ability to redeem its investment in GRP-TE. The following table summarizes the changes in level 3 investments measured at fair value on a recurring basis for the three and nine months ended September 30, 2015 (in thousands): Three Months Ended Nine Months Ended Trading Equity Method Investments Trading Equity Method Investments Limited Partnership Interests GRP-TE Limited Partnership Interests GRP-TE Balance at beginning of period $ 2,463 $ 110 $ 2,509 $ 111 Purchases / contributions 13 — 57 2 Sales / distributions (98 ) — (245 ) (6 ) Realized gains 40 — 136 2 Unrealized (losses) gains (1) (107 ) — (146 ) 1 Transfers into (out of) level 3 — — — — Balance at end of period $ 2,311 $ 110 $ 2,311 $ 110 _________________________ (1) Pertains to unrealized gains (losses) from securities held at September 30, 2015 . The following table summarizes the changes in level 3 investments measured at fair value on a recurring basis for the three and nine months ended September 30, 2014 (in thousands): Three Months Ended Nine Months Ended Trading Investments Equity Method Investments Available-for-sale investments Trading Investments Equity Method Investments Available-for-sale investments Common Stocks Limited Partnership Interests GRP-TE Preferred Securities Common Stocks Limited Partnership Interests GRP-TE/Offshore Fund Preferred Securities Balance at beginning of period $ — $ 2,378 $ 105 $ — $ 503 $ 2,740 $ 528 $ 3,325 Purchases / contributions — 151 2 — — 456 11 — Sales / distributions — — — — (527 ) (721 ) (463 ) (4,000 ) Realized gains — — — — 24 64 — 675 Unrealized (losses) gains (1) — (113 ) — — — (123 ) 31 — Transfers into (out of) level 3 — — — — — — — — Balance at end of period $ — $ 2,416 $ 107 $ — $ — $ 2,416 $ 107 $ — _________________________ (1) Pertains to unrealized gains (losses) from securities held at September 30, 2014 . Realized gains (losses) from investments classified as trading investments, equity method investments and available-for-sale investments in the above tables were recorded as gain (loss) from seed investments in the Company's condensed consolidated statements of operations. Unrealized gains (losses) from investments classified as trading investments and equity method investments in the above tables were recorded as gain (loss) from seed investments in the Company's condensed consolidated statements of operations. Unrealized gains (losses) from available-for-sale investments in the above tables were recorded as unrealized gain (loss) from available-for-sale investments in the Company's condensed consolidated statements of comprehensive income. Valuation Techniques In certain instances, debt and equity securities are valued on the basis of prices from an orderly transaction between market participants provided by reputable brokers/dealers or pricing services. In determining the value of a particular investment, pricing services may use information with respect to transactions in such investments, broker quotes, pricing matrices, market transactions in comparable investments and various relationships between investments. As part of its independent price verification process, the Company selectively performs detailed reviews of valuations provided by broker/dealers or pricing services. Investments in Company-sponsored mutual funds are valued at their closing net asset value. Foreign exchange contracts are valued by interpolating a value using the spot foreign exchange rate and forward points (based on the spot rate and currency interest rate differentials), which are all inputs that are observable in active markets (level 2). In the absence of observable market prices, the Company values its investments using valuation methodologies applied on a consistent basis. For some investments, little market activity may exist; management's determination of fair value is then based on the best information available in the circumstances, and may incorporate management's own assumptions and involves a significant degree of judgment, taking into consideration a combination of internal and external factors. Such investments are valued on a quarterly basis, taking into consideration any changes in key inputs and changes in economic and other relevant conditions, and valuation models are updated accordingly. The valuation process also includes a review by the Company's valuation committee which is comprised of senior members from various departments within the Company, including investment management. The valuation committee provides independent oversight of the valuation policies and procedures. The valuation techniques and significant unobservable inputs used in the fair value measurement of the following level 3 investments as of September 30, 2015 were: Fair Value Fair Value Significant Input / (in thousands) Methodology Unobservable Inputs Range Limited partnership interests - direct investments in real estate $ 1,324 Discounted cash flows Discount rate Exit capitalization rates Market rental rates 10% - 12.5% The valuation techniques and significant unobservable inputs used in the fair value measurement of the following level 3 investments as of December 31, 2014 were: Fair Value Fair Value Significant Input / (in thousands) Methodology Unobservable Inputs Range Limited partnership interests - direct investments in real estate $ 1,465 Discounted cash flows Discount rate Exit capitalization rates Market rental rates 9% - 15% 8% - 8.5% $15.00 - 17.00 psf Changes in the significant unobservable inputs in the tables above may result in a materially higher or lower fair value measurement. The disclosure in the above tables excludes the Company's ownership interests in limited partnership vehicles which are valued based on the net asset values of the underlying funds.

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Derivatives The following is a summary of the notional and fair value of the derivative financial instruments. The notional amount represents the absolute value amount of all outstanding derivative contracts at September 30, 2015 (in thousands): September 30, 2015 Assets Liabilities Notional Fair Value Notional Fair Value Total foreign exchange contracts $ — $ — $ 18,423 $ 374 Total commodity contracts 4,525 141 5,745 342 Total derivatives $ 4,525 $ 141 $ 24,168 $ 716 The following is a summary of the notional and fair value of the derivative financial instruments. The notional amount represents the absolute value amount of all outstanding derivative contracts at December 31, 2014 (in thousands): December 31, 2014 Assets Liabilities Notional Fair Value Notional Fair Value Total foreign exchange contracts $ 11,349 $ 505 $ 222 $ 12 Total commodity contracts 6,095 234 8,977 754 Total derivatives $ 17,444 $ 739 $ 9,199 $ 766 Cash included in due from broker in the condensed consolidated statement of financial condition of approximately $242,000 and $422,000 as of September 30, 2015 and December 31, 2014 , respectively, was held as collateral for futures contracts. Securities included in trading investments in the condensed consolidated statement of financial condition of approximately $535,000 and $650,000 as of September 30, 2015 and December 31, 2014 , respectively, were held as collateral for futures contracts. Gains and losses from derivative financial instruments for the three and nine months ended September 30, 2015 and 2014 are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Foreign exchange contracts $ (492 ) $ 1,275 $ (866 ) $ 767 Commodity contracts (1,221 ) (2,221 ) (1,522 ) (1,871 ) Total derivatives $ (1,713 ) $ (946 ) $ (2,388 ) $ (1,104 )

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share is calculated by dividing net income attributable to common stockholders by the weighted average shares outstanding. Diluted earnings per share is calculated by dividing net income attributable to common stockholders by the total weighted average shares of common stock outstanding and common stock equivalents. Common stock equivalents are comprised of dilutive potential shares from restricted stock unit awards. Common stock equivalents are excluded from the computation if their effect is anti-dilutive. Diluted earnings per share is computed using the treasury stock method. Anti-dilutive common stock equivalents of approximately 90,000 and 36,000 shares, respectively, were excluded from the computation for the three and nine months ended September 30, 2015 . No anti-dilutive common stock equivalents were excluded from the computation for the three and nine months ended September 30, 2014 . The following is a reconciliation of the income and share data used in the basic and diluted earnings per share computations for the three and nine months ended September 30, 2015 and 2014 (in thousands, except per share data): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Net income $ 16,964 $ 18,037 $ 58,509 $ 60,561 Less: Net loss (income) attributable to redeemable noncontrolling interest 129 147 163 (749 ) Net income attributable to common stockholders $ 17,093 $ 18,184 $ 58,672 $ 59,812 Basic weighted average shares outstanding 45,500 44,839 45,402 44,766 Dilutive potential shares from restricted stock units 330 850 471 802 Diluted weighted average shares outstanding 45,830 45,689 45,873 45,568 Basic earnings per share attributable to common stockholders $ 0.38 $ 0.41 $ 1.29 $ 1.34 Diluted earnings per share attributable to common stockholders $ 0.37 $ 0.40 $ 1.28 $ 1.31

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes includes U.S. federal, state, local and foreign taxes. For the three months ended September 30, 2015 and September 30, 2014 , the effective tax rate was approximately 40.3% and 37.1% , respectively. The effective tax rate for the three months ended September 30, 2015 included the cumulative effect to adjust the estimated tax rate to 38% for the full year 2015. The effective tax rate for the three months ended September 30, 2014 included the cumulative effect to adjust the estimated tax rate to 36% for the full year 2014. The effective tax rate for the nine months ended September 30, 2015 and September 30, 2014 was approximately 38% and 36% , respectively. The Company expects the tax rate for the full year 2015 to approximate 38% , excluding discrete items. Deferred income taxes represent the tax effects of the temporary differences between book and tax bases and are measured using enacted tax rates that will be in effect when such items are expected to reverse. The Company's net deferred tax asset is primarily comprised of future income tax deductions attributable to the delivery of unvested restricted stock units. The Company records a valuation allowance, when necessary, to reduce deferred tax assets to an amount that more likely than not will be realized.

Regulatory Requirements

Regulatory Requirements	9 Months Ended
	Sep. 30, 2015
Regulatory Capital Requirements [Abstract]
Regulatory Requirements	Regulatory Requirements CSS, a registered broker/dealer in the U.S., is subject to the SEC’s Uniform Net Capital Rule 15c3-1 (the Rule), which requires that broker/dealers maintain a minimum level of net capital, as prescribed under the Rule. As of September 30, 2015 , CSS had net capital of approximately $2,585,000 , which exceeded its requirements by approximately $2,428,000 . The Rule also provides that equity capital may not be withdrawn or cash dividends paid if the resulting net capital of a broker/dealer is less than the amount required under the Rule and requires prior notice to the SEC for certain withdrawals of capital. CSS does not carry customer accounts and is exempt from SEC Rule 15c3-3 pursuant to provisions (k)(1) and (k)(2)(i) of such rule. CSAL and CSUK are regulated outside the U.S. by the Hong Kong Securities and Futures Commission and the United Kingdom Financial Conduct Authority, respectively. As of September 30, 2015 , CSAL and CSUK had aggregate regulatory capital of approximately $66,790,000 , which exceeded aggregate regulatory capital requirements by approximately $64,161,000 .

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2015
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions The Company is an investment adviser to, and has administrative agreements with, affiliated funds for which certain employees are officers and/or directors. The following table sets forth the amount of revenue the Company earned from these affiliated funds for the three and nine months ended September 30, 2015 and 2014 (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Investment advisory and administration fees $ 53,059 $ 54,789 $ 165,007 $ 155,201 Distribution and service fees 3,961 3,738 11,881 10,952 $ 57,020 $ 58,527 $ 176,888 $ 166,153 Sales proceeds, gross realized gains, gross realized losses and dividend income from available-for-sale investments in Company-sponsored mutual funds for the three and nine months ended September 30, 2015 and 2014 are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Proceeds from sales $ 1,172 $ — $ 1,172 $ 192 Gross realized gains — — — — Gross realized losses (431 ) — (431 ) (3 ) Dividend income 171 — 471 — The Company has agreements with certain affiliated open-end mutual funds and closed-end funds to reimburse certain fund expenses. For the three months ended September 30, 2015 and 2014 , expenses of approximately $1,998,000 and $ 2,042,000 , respectively, were incurred by the Company pursuant to these agreements and are included in general and administrative expenses. For the nine months ended September 30, 2015 and 2014 , expenses of approximately $6,476,000 and $6,581,000 , respectively, were incurred. Included in accounts receivable at September 30, 2015 and December 31, 2014 are receivables due from Company-sponsored mutual funds of approximately $18,146,000 and $19,750,000 , respectively.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies From time to time, the Company is involved in legal matters relating to claims arising in the ordinary course of business. There are currently no such matters pending that the Company believes could have a material adverse effect on its condensed consolidated results of operations, cash flows or financial position. The Company periodically commits to fund a portion of the equity in certain of its sponsored investment products. The Company has committed to co-invest up to $5.1 million alongside GRP-TE, a portion of which is made through GRP-TE and the remainder of which is made through GRP-CIP for up to 12 years through the life of GRP-TE. As of September 30, 2015 , the Company has funded approximately $3.2 million with respect to this commitment. The actual timing for funding the unfunded portion of this commitment is currently unknown, as the drawdown of the Company's unfunded commitment is contingent on the timing of drawdowns by the underlying funds and co-investments in which GRP-TE invests. The unfunded commitment was not recorded on the Company's condensed consolidated statements of financial condition as of September 30, 2015 .

Concentration of Credit Risk

Concentration of Credit Risk	9 Months Ended
	Sep. 30, 2015
Risks and Uncertainties [Abstract]
Concentration of Credit Risk	Concentration of Credit Risk The Company's cash and cash equivalents are principally on deposit with three major financial institutions. The Company is subject to credit risk should these financial institutions be unable to fulfill their obligations.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events The Company has evaluated the need for disclosures and/or adjustments resulting from subsequent events through the date the condensed consolidated financial statements were issued. Other than the items described below, the Company determined that there were no additional subsequent events that require disclosure and/or adjustment. On November 3, 2015, CNS declared quarterly and special cash dividends on its common stock in the amount of $0.25 and $0.50 per share, respectively. The dividends will be payable on December 16, 2015 to stockholders of record at the close of business on November 25, 2015.

Basis of Presentation and Sig23

Basis of Presentation and Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Accounting Estimates	Accounting Estimates —The preparation of the condensed consolidated financial statements in conformity with GAAP 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 condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting periods. Management believes the estimates used in preparing the condensed consolidated financial statements are reasonable and prudent. Actual results could differ from those estimates.
Reclassifications	Reclassifications —Certain prior year amounts have been reclassified to conform to the current year presentation. On the condensed consolidated statements of operations and the condensed consolidated statements of cash flows, the captions “gain (loss) from trading investments—net”, “gain (loss) from available-for-sale investments—net” and “equity in earnings (losses) of affiliates” have been combined into a single caption “gain (loss) from seed investments—net”. The breakdown of these amounts is provided in Note 4, Investments.
Consolidation	Consolidation —The Company consolidates operating entities deemed to be voting interest entities if the Company owns a majority of the voting interest. The Company also consolidates any variable interest entities (VIEs) in which the Company is the primary beneficiary. The Company records noncontrolling interests in consolidated subsidiaries for which the Company’s ownership is less than 100 percent. The equity method of accounting is used for investments in affiliates in which the Company’s ownership ranges from 20 to 50 percent, or instances in which the Company is able to exercise significant influence but not control.
VIE	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. Investments and redemptions or amendments to the governing documents of the respective entities could affect an entity's status as a VIE or the determination of the primary beneficiary. The Company assesses whether entities in which it has an interest are VIEs upon initial involvement and at each reporting date. The Company assesses whether it is the primary beneficiary of any VIEs identified by evaluating its economic interests in the entity held either directly by the Company and its affiliates or indirectly through employees.
Cash and Cash Equivalents	Cash and Cash Equivalents —Cash equivalents consist of short-term, highly liquid investments, which are readily convertible into cash and have original maturities of three months or less.
Due from/to Broker	Due from/to Broker —The Company conducts business, primarily with respect to its consolidated seed investments, with brokers for certain of its investment activities. The clearing and custody operations for these investment activities are performed pursuant to contractual agreements. The due from/to broker balance represents cash and cash equivalents balances at brokers/custodians and/or net receivables and payables for unsettled security transactions.
Investments	Investments —Management of the Company determines the appropriate classification of its investments at the time of purchase and re-evaluates such determination at each statement of financial condition date. Investments classified as trading represent securities held within the affiliated funds that the Company consolidates and are measured at fair value based on quoted market prices, market prices obtained from independent pricing services engaged by management or as determined by the Company’s valuation committee. Unrealized gains and losses are recorded as gain (loss) from seed investments—net in the Company’s condensed consolidated statements of operations. Investments classified as equity method investments represent seed investments that are accounted for using the equity method, under which the Company recognizes its respective share of the investee’s net income or loss for the period as gain (loss) from seed investments—net in the Company’s condensed consolidated statements of operations. As of September 30, 2015 , the Company's equity method investments consisted of interests in affiliated funds which measure their underlying investments at fair value and report a net asset value on a recurring basis. The carrying amounts of these investments approximate their fair value. Investments classified as available-for-sale are comprised of equity securities, investment-grade preferred instruments and investments in Company-sponsored open-end mutual funds. These investments are carried at fair value based on quoted market prices or market prices obtained from independent pricing services engaged by management, with unrealized gains and losses, net of tax, reported in accumulated other comprehensive income. The Company periodically reviews each individual security position that has an unrealized loss, or impairment, to determine if that impairment is other than temporary. If the Company believes an impairment of a security position is other than temporary, based on available quantitative and qualitative information as of the report date, the loss will be recognized as gain (loss) from seed investments—net in the Company’s condensed consolidated statements of operations. From time to time, the affiliated funds consolidated by the Company enter into derivative contracts to gain exposure to the underlying commodities markets or to hedge market and credit risks of the underlying portfolios utilizing options, total return swaps, credit default swaps and futures contracts. These instruments are measured at fair value with gains and losses recorded as gain (loss) from seed investments—net in the Company's condensed consolidated statements of operations. The fair values of these instruments are recorded in other assets or other liabilities and accrued expenses in the Company's condensed consolidated statements of financial condition. As of September 30, 2015 , none of the outstanding derivative contracts were subject to a master netting agreement or other similar arrangement. Additionally, from time to time, the Company enters into foreign exchange contracts to hedge its currency exposure related to certain client receivables. These instruments are measured at fair value with gains and losses recorded in other non-operating income in the Company's condensed consolidated statements of operations. The fair values of these contracts are recorded in other assets or other liabilities and accrued expenses in the Company's condensed consolidated statements of financial condition.
Goodwill and Intangible Assets	Goodwill and Intangible Assets —Goodwill represents the excess of the cost of the Company’s investment in the net assets of an acquired company over the fair value of the underlying identifiable net assets at the date of acquisition. Goodwill and indefinite lived intangible assets are not amortized but are tested at least annually for impairment by comparing the fair value to their carrying amounts. Finite lived intangible assets are amortized over their useful lives and are tested for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. See Note 3 for further discussion about the Company’s goodwill and intangible assets.
Redeemable Noncontrolling Interest	Redeemable Noncontrolling Interest —Redeemable noncontrolling interest represents third-party interests in the Company's consolidated entities. This interest is redeemable at the option of the investors and therefore is not treated as permanent equity. Redeemable noncontrolling interest is remeasured at redemption value which approximates the fair value at each reporting period.
Investment Advisory and Administrative Fees	Investment Advisory and Administration Fees —The Company earns revenue by providing asset management services to institutional accounts and to Company-sponsored open-end mutual funds and closed-end funds. Investment advisory fees are earned pursuant to the terms of investment management agreements, and are based on a contractual fee rate applied to the assets in the portfolio. The Company also earns administration fees from certain Company-sponsored open-end mutual funds and closed-end funds pursuant to the terms of underlying administration contracts. Administration fees are based on the average assets under management of such funds. Investment advisory and administration fee revenue is recognized as such fees are earned.
Distribution and Service Fee Revenue	Distribution and Service Fee Revenue —CSS acts as the principal distributor of the Company’s sponsored open-end mutual funds which may offer the following classes: Class A (initial sales load), Class C (back end sales load), Class R (load retirement) and Class Z (no load retirement). Effective May 2007, the Company suspended sales of Class B shares and all remaining Class B shares converted to Class A shares in 2015. Distribution and service fee revenue is based on the average daily net assets of the funds as detailed below. Distribution and service fee revenue is earned daily and is recorded gross of any third-party distribution and service fee expense for applicable share classes. Pursuant to distribution plans with the Company's sponsored open-end mutual funds, CSS receives distribution fees of up to 25bps for Class A shares, 75bps for Class C shares and 50bps for Class R shares. CSS also receives shareholder servicing fees of up to 10bps on Class A shares, 25bps on Class C shares and 15bps on Class Z shares, pursuant to shareholder servicing plans with the funds. Effective October 1, 2014, the Company no longer receives shareholder servicing fees on Class Z shares.
Distribution and Service Fee Expense	Distribution and Service Fee Expense —Distribution and service fee expense includes distribution fees, service fees and intermediary assistance payments. Distribution and service fee expense is recorded as incurred. Distribution fee expense represents payments made to qualified dealers/institutions for (i) assistance in connection with the distribution of the Company's sponsored open-end mutual funds' shares and (ii) for other expenses such as advertising costs and printing and distribution of prospectuses to investors. Such amounts may also be used to pay financial intermediaries for services as specified in the terms of written agreements complying with Rule 12b-1 of the Investment Company Act of 1940 (Rule 12b-1). CSS pays distribution fee expense based on the average daily net assets under management of up to 25bps on Class A shares, 75bps on Class C shares and 50bps on Class R shares. Shareholder servicing fee expense represents payments made to qualified dealers/institutions for shareholder account service and maintenance. These services are provided pursuant to written agreements with such qualified institutions. CSS pays service fee expenses based on the average daily net assets under management of up to 10bps on Class A shares, 25bps on Class C shares and 15bps on Class Z shares. Effective October 1, 2014, the Company no longer pays shareholder service fees on Class Z shares. Intermediary assistance payments represent payments to qualified dealers/institutions for activities related to distribution, shareholder servicing and marketing and support of Company-sponsored open-end mutual funds and are incremental to those described above. Intermediary assistance payments are generally based on the average assets under management or the number of accounts being serviced.
Portfolio Consulting and Other	Portfolio Consulting and Other —The Company earns portfolio consulting and other fees by: (i) providing portfolio consulting services in connection with model-based strategy accounts; (ii) earning a licensing fee for the use of the Company's proprietary indexes; and (iii) providing portfolio monitoring services related to a number of unit investment trusts. This revenue is earned pursuant to the terms of the underlying contract, and the fee schedules for these relationships vary based on the type of services the Company provides for each relationship. This revenue is recognized as such fees are earned.
Stock-based Compensation	Stock-based Compensation —The Company recognizes compensation expense for the grant-date fair value of awards of equity instruments to employees. This expense is recognized over the period during which employees are required to provide service. The Company also estimates forfeitures.
Income Taxes	Income Taxes —The Company records the current and deferred tax consequences of all transactions that have been recognized in the condensed consolidated financial statements in accordance with the provisions of the enacted tax laws. Deferred tax assets are recognized for temporary differences that will result in deductible amounts in future years at tax rates that are expected to apply in those years. Deferred tax liabilities are recognized for temporary differences that will result in taxable income in future years at tax rates that are expected to apply in those years. The Company records a valuation allowance, when necessary, to reduce deferred tax assets to an amount that more likely than not will be realized. The effective tax rate for interim periods represents the Company’s best estimate of the effective tax rate expected to be applied to the full fiscal year.
Currency Translation and Transactions	Currency Translation and Transactions —Assets and liabilities of subsidiaries having non-U.S. dollar functional currencies are translated at exchange rates at the applicable condensed consolidated statement of financial condition date. Revenue and expenses of such subsidiaries are translated at average exchange rates during the period. The gains or losses resulting from translating non-U.S. dollar functional currency into U.S. dollars are included in the Company's condensed consolidated statements of comprehensive income. The cumulative translation adjustment was $(2,738,000) and $(1,446,000) as of September 30, 2015 and December 31, 2014 , respectively. Gains or losses resulting from non-U.S. dollar currency transactions are included in other non-operating income in the condensed consolidated statements of operations.
Comprehensive Income	Comprehensive Income —The Company reports all changes in comprehensive income in the condensed consolidated statements of comprehensive income. Comprehensive income includes net income or loss attributable to common stockholders, foreign currency translation gain and loss (net of tax), unrealized gain and loss from available-for-sale investments (net of tax) and reclassification to statements of operations of gain and loss from available-for-sale investments (net of tax).
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements —In May 2015, the Financial Accounting Standards Board (FASB) issued new guidance amending the current disclosure requirement for investments in certain entities that calculate net asset value per share. The guidance requires investments for which fair value is measured using the net asset value per share practical expedient be removed from the fair value hierarchy. Instead, those investment amounts shall be provided as a separate item to permit reconciliation of the fair value of investments included in the fair value hierarchy to the line items presented in the statement of financial position. This new guidance will be effective for the Company’s first quarter of 2016. The Company does not anticipate that the adoption of this new guidance will have a material impact on its condensed consolidated financial statements. In February 2015, the FASB issued new guidance amending the current accounting for consolidation of certain legal entities. These amendments modify the evaluation of whether limited partnerships and similar legal entities are VIEs or voting interest entities, eliminate the presumption that a general partner should consolidate a limited partnership, affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships, and provide a scope exception from consolidation guidance for reporting entities with interests in certain investment funds. This new guidance will be effective for the Company’s first quarter of 2016. The Company is currently evaluating the potential impact on its condensed consolidated financial statements and related disclosures. In August 2014, the FASB issued new guidance regarding disclosure of going concern uncertainties in the financial statements. The guidance requires management to evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the entity's ability to continue as a going concern within one year after the date that the financial statements are issued at each annual and interim reporting period. This new guidance will be effective for the Company’s first quarter of 2017. The Company does not anticipate that the adoption of this new guidance will have a material impact on its condensed consolidated financial statements. In May 2014, the FASB issued new guidance which outlined a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers. The core principle of the revenue model is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This new guidance will be effective for the Company's first quarter of 2018 and requires either a retrospective or a modified retrospective approach to adoption. The Company is currently evaluating the potential impact on its condensed consolidated financial statements and related disclosures, as well as the available transition methods.
Valuation Techniques	Valuation Techniques In certain instances, debt and equity securities are valued on the basis of prices from an orderly transaction between market participants provided by reputable brokers/dealers or pricing services. In determining the value of a particular investment, pricing services may use information with respect to transactions in such investments, broker quotes, pricing matrices, market transactions in comparable investments and various relationships between investments. As part of its independent price verification process, the Company selectively performs detailed reviews of valuations provided by broker/dealers or pricing services. Investments in Company-sponsored mutual funds are valued at their closing net asset value. Foreign exchange contracts are valued by interpolating a value using the spot foreign exchange rate and forward points (based on the spot rate and currency interest rate differentials), which are all inputs that are observable in active markets (level 2). In the absence of observable market prices, the Company values its investments using valuation methodologies applied on a consistent basis. For some investments, little market activity may exist; management's determination of fair value is then based on the best information available in the circumstances, and may incorporate management's own assumptions and involves a significant degree of judgment, taking into consideration a combination of internal and external factors. Such investments are valued on a quarterly basis, taking into consideration any changes in key inputs and changes in economic and other relevant conditions, and valuation models are updated accordingly. The valuation process also includes a review by the Company's valuation committee which is comprised of senior members from various departments within the Company, including investment management. The valuation committee provides independent oversight of the valuation policies and procedures.

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets	The following table details the gross carrying amounts and accumulated amortization for the intangible assets at September 30, 2015 and December 31, 2014 (in thousands): Remaining Amortization Period (in months) Gross Carrying Amount Accumulated Amortization Intangible Assets, Net September 30, 2015: Amortized intangible assets: Client relationships 39 $ 1,543 $ (1,247 ) $ 296 Non-amortized intangible assets: Mutual fund management contracts — 1,250 — 1,250 Total $ 2,793 $ (1,247 ) $ 1,546 December 31, 2014: Amortized intangible assets: Client relationships 48 $ 1,543 $ (1,181 ) $ 362 Non-amortized intangible assets: Mutual fund management contracts — 1,250 — 1,250 Total $ 2,793 $ (1,181 ) $ 1,612
Schedule Future Amortization Expense	Estimated future amortization expense is as follows (in thousands): Periods Ending December 31, Estimated Amortization Expense 2015 $ 23 2016 89 2017 89 2018 95 2019 — Total $ 296

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2015
Investments [Abstract]
Summary Investment Holdings	The following is a summary of the Company's investments as of September 30, 2015 and December 31, 2014 (in thousands): September 30, 2015 December 31, 2014 Trading investments $ 12,851 $ 9,509 Equity method investments 6,309 28,550 Available-for-sale investments 30,531 21,269
Gain (Loss) on Investments	Gain (loss) from seed investments for the three and nine months ended September 30, 2015 and 2014 are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 (Loss) gain from trading investments—net (1) $ (1,386 ) $ (2,690 ) $ (1,632 ) $ 1,055 Equity in (losses) earnings of affiliates (1,138 ) (1,571 ) (1,134 ) 793 (Loss) gain from available-for-sale investments—net (469 ) 760 (49 ) 1,888 Total (loss) gain from seed investments—net $ (2,993 ) $ (3,501 ) $ (2,815 ) $ 3,736 Number of new funds seeded 1 — 1 1 _________________________ (1) Includes net income/(loss) attributable to redeemable noncontrolling interest for the periods presented.
Schedule of Variable Interest Entities	The following represents the portion of the condensed consolidated statements of financial condition attributable to the consolidated GLI SICAV as of September 30, 2015 . The assets may only be used to settle obligations of GLI SICAV and the liabilities are the sole obligation of GLI SICAV, for which creditors do not have recourse to the general credit of the Company (in thousands): September 30, 2015 Assets: Trading investments $ 4,830 Due from broker 4,556 Other assets 48 Total assets $ 9,434 Liabilities: Due to broker $ 4,502 Other liabilities and accrued expenses 24 Total liabilities $ 4,526
Schedule of Fair Value of Trading Investments and Equity Method Method Investments	The following is a summary of the fair value of trading investments and equity method investments as of September 30, 2015 and December 31, 2014 (in thousands): September 30, 2015 December 31, 2014 Trading Investments Equity Method Investments Trading Investments Equity Method Investments ACOM $ — $ 6,199 $ — $ 7,612 CDF 5,710 — 7,000 — GLI SICAV 4,830 — — — GRP-CIP 2,311 — 2,509 — GRP-TE — 110 — 111 MLO — — — 20,827 Total $ 12,851 $ 6,309 $ 9,509 $ 28,550
Trading Investments	Gain (loss) from trading investments—net for the three and nine months ended September 30, 2015 and 2014, which represent realized and unrealized gains and losses recorded by the funds the Company consolidates, are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 ACOM $ — $ (1,321 ) $ — $ (505 ) CDF (1,221 ) (1,450 ) (1,521 ) (1,404 ) GLI SICAV (98 ) — (98 ) — GRP-CIP (67 ) 5 (13 ) 168 MLO — 76 — 2,772 Onshore Fund — — — 24 Total (loss) gain from trading investments—net $ (1,386 ) $ (2,690 ) $ (1,632 ) $ 1,055
Schedule of Equity in Earnings (Losses) of Affiliates	Equity in earnings (losses) of affiliates for the three and nine months ended September 30, 2015 and 2014 are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 ACOM $ (1,138 ) $ — $ (1,413 ) $ — GRP-TE — — 3 20 MLO — — 276 — Offshore Fund — 9 — 20 RAP — (1,580 ) — 753 Total equity in (losses) earnings of affiliates $ (1,138 ) $ (1,571 ) $ (1,134 ) $ 793
Schedule of Available-for-sale Investments Reconciliation	The following is a summary of the cost, gross unrealized gains, gross unrealized losses and fair value of available-for-sale investments as of September 30, 2015 and December 31, 2014 (in thousands): September 30, 2015 Cost Gross Unrealized Gains Gross Unrealized Losses (1) Fair Value Preferred securities $ 1,121 $ 39 $ (7 ) $ 1,153 Common stocks 4,124 160 (435 ) 3,849 Company-sponsored mutual funds 34,511 — (8,982 ) 25,529 Total available-for-sale investments $ 39,756 $ 199 $ (9,424 ) $ 30,531 _________________________ (1) At September 30, 2015 , there were no securities with unrealized losses continuously for a period of more than 12 months. December 31, 2014 Cost Gross Unrealized Gains Gross (1) Fair Value Preferred securities $ 1,043 $ 54 $ (2 ) $ 1,095 Common stocks 5,366 627 (155 ) 5,838 Company-sponsored mutual funds 15,010 4 (678 ) 14,336 Total available-for-sale investments $ 21,419 $ 685 $ (835 ) $ 21,269 __ _______________________ (1) At December 31, 2014 , there were no securities with unrealized losses continuously for a period of more than 12 months.
Realized Gain (Loss) on Investments	Sales proceeds, gross realized gains and losses from available-for-sale investments for the three and nine months ended September 30, 2015 and 2014 are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Proceeds from sales $ 2,942 $ 2,713 $ 7,558 $ 11,011 Gross realized gains 79 775 743 2,024 Gross realized losses (548 ) (15 ) (792 ) (136 )

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring	The following table presents fair value measurements as of December 31, 2014 (in thousands): Level 1 Level 2 Level 3 Total Cash equivalents (1) $ 59,281 $ — $ — $ 59,281 Trading investments Fixed income securities $ — $ 7,000 $ — $ 7,000 Limited partnership interests — — 2,509 2,509 Total trading investment $ — $ 7,000 $ 2,509 $ 9,509 Equity method investments $ 20,827 $ 7,612 $ 111 $ 28,550 Available-for-sale investments Preferred securities $ 1,095 $ — $ — $ 1,095 Common stocks 5,838 — — 5,838 Company-sponsored mutual funds 14,336 — — 14,336 Total available-for-sale investments $ 21,269 $ — $ — $ 21,269 Derivatives - assets Foreign exchange contracts $ — $ 505 $ — $ 505 Commodity contracts 234 — — 234 Total derivatives - assets $ 234 $ 505 $ — $ 739 Derivatives - liabilities Foreign exchange contracts $ — $ 12 $ — $ 12 Commodity contracts 754 — — 754 Total derivatives - liabilities $ 754 $ 12 $ — $ 766 _________________________ (1) Comprised of investments in actively traded money market funds measured at net asset value. The following table presents fair value measurements as of September 30, 2015 (in thousands): Level 1 Level 2 Level 3 Total Cash equivalents (1) $ 56,631 $ — $ — $ 56,631 Trading investments Common stocks $ 4,830 $ — $ — $ 4,830 Fixed income securities — 5,710 — 5,710 Limited partnership interests — — 2,311 2,311 Total trading investments $ 4,830 $ 5,710 $ 2,311 $ 12,851 Equity method investments $ — $ 6,199 $ 110 $ 6,309 Available-for-sale investments Preferred securities $ 1,153 $ — $ — $ 1,153 Common stocks 3,849 — — 3,849 Company-sponsored mutual funds 25,529 — — 25,529 Total available-for-sale investments $ 30,531 $ — $ — $ 30,531 Derivatives - assets Commodity contracts $ 141 $ — $ — $ 141 Total derivatives - assets $ 141 $ — $ — $ 141 Derivatives - liabilities Foreign exchange contracts $ — $ 374 $ — $ 374 Commodity contracts 342 — — 342 Total derivatives - liabilities $ 342 $ 374 $ — $ 716 _________________________ (1) Comprised of investments in actively traded money market funds measured at net asset value.
Fair Value, Valuation Technique, Unobservable Inputs	The following table summarizes the changes in level 3 investments measured at fair value on a recurring basis for the three and nine months ended September 30, 2015 (in thousands): Three Months Ended Nine Months Ended Trading Equity Method Investments Trading Equity Method Investments Limited Partnership Interests GRP-TE Limited Partnership Interests GRP-TE Balance at beginning of period $ 2,463 $ 110 $ 2,509 $ 111 Purchases / contributions 13 — 57 2 Sales / distributions (98 ) — (245 ) (6 ) Realized gains 40 — 136 2 Unrealized (losses) gains (1) (107 ) — (146 ) 1 Transfers into (out of) level 3 — — — — Balance at end of period $ 2,311 $ 110 $ 2,311 $ 110 _________________________ (1) Pertains to unrealized gains (losses) from securities held at September 30, 2015 . The following table summarizes the changes in level 3 investments measured at fair value on a recurring basis for the three and nine months ended September 30, 2014 (in thousands): Three Months Ended Nine Months Ended Trading Investments Equity Method Investments Available-for-sale investments Trading Investments Equity Method Investments Available-for-sale investments Common Stocks Limited Partnership Interests GRP-TE Preferred Securities Common Stocks Limited Partnership Interests GRP-TE/Offshore Fund Preferred Securities Balance at beginning of period $ — $ 2,378 $ 105 $ — $ 503 $ 2,740 $ 528 $ 3,325 Purchases / contributions — 151 2 — — 456 11 — Sales / distributions — — — — (527 ) (721 ) (463 ) (4,000 ) Realized gains — — — — 24 64 — 675 Unrealized (losses) gains (1) — (113 ) — — — (123 ) 31 — Transfers into (out of) level 3 — — — — — — — — Balance at end of period $ — $ 2,416 $ 107 $ — $ — $ 2,416 $ 107 $ — _________________________ (1) Pertains to unrealized gains (losses) from securities held at September 30, 2014 . The valuation techniques and significant unobservable inputs used in the fair value measurement of the following level 3 investments as of September 30, 2015 were: Fair Value Fair Value Significant Input / (in thousands) Methodology Unobservable Inputs Range Limited partnership interests - direct investments in real estate $ 1,324 Discounted cash flows Discount rate Exit capitalization rates Market rental rates 10% - 12.5% The valuation techniques and significant unobservable inputs used in the fair value measurement of the following level 3 investments as of December 31, 2014 were: Fair Value Fair Value Significant Input / (in thousands) Methodology Unobservable Inputs Range Limited partnership interests - direct investments in real estate $ 1,465 Discounted cash flows Discount rate Exit capitalization rates Market rental rates 9% - 15% 8% - 8.5% $15.00 - 17.00 psf

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The following is a summary of the notional and fair value of the derivative financial instruments. The notional amount represents the absolute value amount of all outstanding derivative contracts at September 30, 2015 (in thousands): September 30, 2015 Assets Liabilities Notional Fair Value Notional Fair Value Total foreign exchange contracts $ — $ — $ 18,423 $ 374 Total commodity contracts 4,525 141 5,745 342 Total derivatives $ 4,525 $ 141 $ 24,168 $ 716 The following is a summary of the notional and fair value of the derivative financial instruments. The notional amount represents the absolute value amount of all outstanding derivative contracts at December 31, 2014 (in thousands): December 31, 2014 Assets Liabilities Notional Fair Value Notional Fair Value Total foreign exchange contracts $ 11,349 $ 505 $ 222 $ 12 Total commodity contracts 6,095 234 8,977 754 Total derivatives $ 17,444 $ 739 $ 9,199 $ 766
Gains (losses) on Derivatives	Gains and losses from derivative financial instruments for the three and nine months ended September 30, 2015 and 2014 are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Foreign exchange contracts $ (492 ) $ 1,275 $ (866 ) $ 767 Commodity contracts (1,221 ) (2,221 ) (1,522 ) (1,871 ) Total derivatives $ (1,713 ) $ (946 ) $ (2,388 ) $ (1,104 )

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following is a reconciliation of the income and share data used in the basic and diluted earnings per share computations for the three and nine months ended September 30, 2015 and 2014 (in thousands, except per share data): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Net income $ 16,964 $ 18,037 $ 58,509 $ 60,561 Less: Net loss (income) attributable to redeemable noncontrolling interest 129 147 163 (749 ) Net income attributable to common stockholders $ 17,093 $ 18,184 $ 58,672 $ 59,812 Basic weighted average shares outstanding 45,500 44,839 45,402 44,766 Dilutive potential shares from restricted stock units 330 850 471 802 Diluted weighted average shares outstanding 45,830 45,689 45,873 45,568 Basic earnings per share attributable to common stockholders $ 0.38 $ 0.41 $ 1.29 $ 1.34 Diluted earnings per share attributable to common stockholders $ 0.37 $ 0.40 $ 1.28 $ 1.31

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2015
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following table sets forth the amount of revenue the Company earned from these affiliated funds for the three and nine months ended September 30, 2015 and 2014 (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Investment advisory and administration fees $ 53,059 $ 54,789 $ 165,007 $ 155,201 Distribution and service fees 3,961 3,738 11,881 10,952 $ 57,020 $ 58,527 $ 176,888 $ 166,153
Schedule of Realized Gain (Loss)	Sales proceeds, gross realized gains, gross realized losses and dividend income from available-for-sale investments in Company-sponsored mutual funds for the three and nine months ended September 30, 2015 and 2014 are summarized below (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Proceeds from sales $ 1,172 $ — $ 1,172 $ 192 Gross realized gains — — — — Gross realized losses (431 ) — (431 ) (3 ) Dividend income 171 — 471 —

Basis of Presentation and Sig30

Basis of Presentation and Significant Accounting Policies (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Minimum
Schedule of Equity Method Investments [Line Items]
Ownership range	20.00%
Maximum
Schedule of Equity Method Investments [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	100.00%
Ownership range	50.00%
Accumulated Translation Adjustment
Cumulative Translation Adjustments balance [Line Items]
Cumulative Foreign Currency Translation Adjustment, Net of Tax	$ (2,738)	$ (1,446)

Basis of Presentation and Sig31

Basis of Presentation and Significant Accounting Policies (Distribution Rates - Phantom) (Details) (Details)	9 Months Ended
	Sep. 30, 2015
Common Class A | Maximum
Investment [Line Items]
Distribution fee revenue, Percent	0.25%
Shareholder servicing fee revenue, Percent	0.10%
Distribution fee expense, Percent	0.25%
Shareholder service fee expenses, Percent	0.10%
Common Class C
Investment [Line Items]
Distribution fee revenue, Percent	0.75%
Shareholder servicing fee revenue, Percent	0.25%
Distribution fee expense, Percent	0.75%
Shareholder service fee expenses, Percent	0.25%
Common Class R
Investment [Line Items]
Distribution fee revenue, Percent	0.50%
Distribution fee expense, Percent	0.50%
Common Class Z
Investment [Line Items]
Shareholder servicing fee revenue, Percent	0.15%
Shareholder service fee expenses, Percent	0.15%

Basis of Presentation and Sig32

Basis of Presentation and Significant Accounting Policies Cash Equivalents Original Maturities (Details)	Sep. 30, 2015
Maximum
Restricted Cash and Cash Equivalents Items [Line Items]
Contractual Maturities of Time Deposits, $100,000 or More, Description	3 months

Basis of Presentation and Sig33

Basis of Presentation and Significant Accounting Policies Schedule of less than wholly owned subsidiaries (Details)	Sep. 30, 2015
Maximum
Noncontrolling Interest, Ownership Percentage by Parent	100.00%

Basis of Presentation and Sig34

Basis of Presentation and Significant Accounting Policies Going concern (Details)	Sep. 30, 2015
Accounting Policies [Abstract]
Substantial Doubt about Going Concern, Conditions or Events	P1Y

Goodwill and Intangible Asset35

Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Goodwill	$ 18,252		$ 18,252		$ 19,120
Goodwill, Translation Adjustments			(868)
Finite-Lived Intangible Assets, Accumulated Amortization	(1,247)		(1,247)		(1,181)
Intangible Assets, Net	296		296
Intangible Assets, Gross	2,793		2,793		2,793
Intangible Assets, Net	1,546		1,546		$ 1,612
Amortization of Intangible Assets	22	$ 22	$ 66	$ 66
Remaining Amortization Period			39 months		48 months
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,015	23		$ 23
2,016	89		89
2,017	89		89
2,018	95		95
2,019	0		0
Total	296		296
Client Relationships
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,543		1,543		$ 1,543
Finite-Lived Intangible Assets, Accumulated Amortization	(1,247)		(1,247)		(1,181)
Intangible Assets, Net	296		296		362
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Total	296		296		362
Mutual Fund Management Contracts
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets	$ 1,250		$ 1,250		$ 1,250

Investments Trading and Equity

Investments Trading and Equity Investments (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015USD ($)new_funds_seeded	Sep. 30, 2014USD ($)new_funds_seeded	Sep. 30, 2015USD ($)new_funds_seeded	Sep. 30, 2014USD ($)new_funds_seeded	Dec. 31, 2014USD ($)
Trading Securities and Other Trading Assets [Line Items]
Trading investments	[1]	$ 12,851		$ 12,851		$ 9,509
Equity method investments		6,309		6,309		28,550
Available-for-sale investments		30,531		30,531		21,269
(Loss) gain from trading investments—net	[2]	(1,386)	$ (2,690)	(1,632)	$ 1,055
Equity in (losses) earnings of affiliates		(1,138)	(1,571)	(1,134)	793
(Loss) gain from available-for-sale investments—net		(469)	760	(49)	1,888
Total (loss) gain on seed investments		$ (2,993)	$ (3,501)	$ (2,815)	$ 3,736
Number of new funds seeded | new_funds_seeded		1,000	0	1,000	1,000
ACOM
Trading Securities and Other Trading Assets [Line Items]
Trading investments		$ 0		$ 0		0
Equity method investments		6,199		6,199		7,612
(Loss) gain from trading investments—net		0	$ (1,321)	0	$ (505)
Equity in (losses) earnings of affiliates		$ (1,138)	0	$ (1,413)	0
Ownership percentage range		11.00%		11.00%
CDF
Trading Securities and Other Trading Assets [Line Items]
Trading investments		$ 5,710		$ 5,710		7,000
Equity method investments		0		0		0
(Loss) gain from trading investments—net		(1,221)	(1,450)	(1,521)	(1,404)
GLI SICAV
Trading Securities and Other Trading Assets [Line Items]
Trading investments		4,830		4,830		0
Equity method investments		0		0		0
(Loss) gain from trading investments—net		(98)	0	(98)	0
GRP-CIP
Trading Securities and Other Trading Assets [Line Items]
Trading investments		2,311		2,311		2,509
Equity method investments		0		0		0
(Loss) gain from trading investments—net		(67)	5	(13)	168
GRP-TE
Trading Securities and Other Trading Assets [Line Items]
Trading investments		0		0		0
Equity method investments		110		110		111
Equity in (losses) earnings of affiliates		$ 0	0	$ 3	20
Ownership percentage range		0.20%		0.20%
MLO
Trading Securities and Other Trading Assets [Line Items]
Trading investments		$ 0		$ 0		0
Equity method investments		0		0		$ 20,827
(Loss) gain from trading investments—net		0	76	0	2,772
Equity in (losses) earnings of affiliates		0	0	276	0
Offshore Fund
Trading Securities and Other Trading Assets [Line Items]
Equity in (losses) earnings of affiliates		0	9	0	20
Onshore Fund
Trading Securities and Other Trading Assets [Line Items]
(Loss) gain from trading investments—net		0	0	0	24
RAP
Trading Securities and Other Trading Assets [Line Items]
Equity in (losses) earnings of affiliates		$ 0	$ (1,580)	$ 0	$ 753
[1]	Includes $535 and $650 held as collateral attributable to the consolidated balances of Cohen & Steers Active Commodities Strategy Fund, Inc. (CDF) as of September 30, 2015 and December 31, 2014, respectively.
[2]	Includes net income/(loss) attributable to redeemable noncontrolling interest for the periods presented.

Investments Variable Interest E

Investments Variable Interest Entity (Details) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Variable Interest Entity [Line Items]
Trading investments	[1]	$ 12,851	$ 9,509
Due from broker		6,111	1,805
Other Assets		5,083	4,173
Assets		296,023	280,721
Due to broker		4,497	5
Other liabilities and accrued expenses		15,092	13,959
Liabilities		49,361	$ 52,133
GLI SICAV
Variable Interest Entity [Line Items]
Trading investments		4,830
Due from broker		4,556
Other Assets		48
Assets		9,434
Due to broker		4,502
Other liabilities and accrued expenses		24
Liabilities		$ 4,526
[1]	Includes $535 and $650 held as collateral attributable to the consolidated balances of Cohen & Steers Active Commodities Strategy Fund, Inc. (CDF) as of September 30, 2015 and December 31, 2014, respectively.

Investments Available-for-Sale

Investments Available-for-Sale Invsetments (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2015		Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014	Dec. 31, 2014
Available-for-sale Investments [Abstract]
Cost	$ 39,756			$ 39,756			$ 21,419
Gross Unrealized Gains	199			199			685
Gross Unrealized Losses	(9,424)	[1]		(9,424)	[1]		(835)	[2]
Fair Value	30,531			30,531			21,269
Available-for-sale investments in an unrealized loss position	28,307			28,307			15,875
Proceeds from Investing Activities [Abstract]
Proceeds from sales	2,942		$ 2,713	7,558		$ 11,011
Gross realized gains	79		775	743		2,024
Gross realized losses	(548)		$ (15)	(792)		$ (136)
Preferred securities
Available-for-sale Investments [Abstract]
Cost	1,121			1,121			1,043
Gross Unrealized Gains	39			39			54
Gross Unrealized Losses	(7)	[1]		(7)	[1]		(2)	[2]
Fair Value	1,153			1,153			1,095
Common stocks
Available-for-sale Investments [Abstract]
Cost	4,124			4,124			5,366
Gross Unrealized Gains	160			160			627
Gross Unrealized Losses	(435)	[1]		(435)	[1]		(155)	[2]
Fair Value	3,849			3,849			5,838
Company-sponsored mutual funds
Available-for-sale Investments [Abstract]
Cost	34,511			34,511			15,010
Gross Unrealized Gains	0			0			4
Gross Unrealized Losses	(8,982)	[1]		(8,982)	[1]		(678)	[2]
Fair Value	$ 25,529			$ 25,529			$ 14,336
[1]	At September 30, 2015, there were no securities with unrealized losses continuously for a period of more than 12 months.
[2]	At December 31, 2014, there were no securities with unrealized losses continuously for a period of more than 12 months.

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Thousands		3 Months Ended						9 Months Ended				12 Months Ended
		Sep. 30, 2015		Dec. 31, 2014		Sep. 30, 2014		Sep. 30, 2015		Sep. 30, 2014		Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment redemption notice period				5 days				5 days
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments	[1]	$ 12,851		$ 9,509				$ 12,851				$ 9,509
Equity method investments		6,309		28,550				6,309				28,550
Available-for-sale investments		30,531		21,269				30,531				21,269
Common stocks
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Available-for-sale investments		3,849		5,838				3,849				5,838
Preferred securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Available-for-sale investments		1,153		1,095				1,153				1,095
GRP-TE
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		0		0				0				0
Equity method investments		110		111				110				111
Company-sponsored mutual funds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Available-for-sale investments		25,529		14,336				$ 25,529				$ 14,336
Level 3 | Minimum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value Inputs, Discount Rate								10.00%				9.00%
Fair Value Inputs, Exit Capitalization Rates								8.00%				8.00%
Fair Value Inputs, Market Rental Rates								15				15
Level 3 | Maximum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value Inputs, Discount Rate								12.50%				15.00%
Fair Value Inputs, Exit Capitalization Rates								8.50%				8.50%
Fair Value Inputs, Market Rental Rates								18.5				17
Level 3 | Limited partnership interests
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 Fair Value		1,324		1,465				$ 1,324				$ 1,465
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Cash equivalents	[2]	56,631		59,281				56,631				59,281
Trading investments		12,851		9,509				12,851				9,509
Equity method investments		6,309		28,550				6,309				28,550
Available-for-sale investments		30,531		21,269				30,531				21,269
Derivative - assets		141		739				141				739
Derivative - liabilities		716		766				716				766
Fair Value, Measurements, Recurring | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative - assets				505								505
Derivative - liabilities		374		12				374				12
Fair Value, Measurements, Recurring | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative - assets		141		234				141				234
Derivative - liabilities		342		754				342				754
Fair Value, Measurements, Recurring | Common stocks
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		4,830						4,830
Available-for-sale investments		3,849		5,838				3,849				5,838
Fair Value, Measurements, Recurring | Fixed income securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		5,710		7,000				5,710				7,000
Fair Value, Measurements, Recurring | Limited partnership interests
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		2,311		2,509				2,311				2,509
Fair Value, Measurements, Recurring | Preferred securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Available-for-sale investments		1,153		1,095				1,153				1,095
Fair Value, Measurements, Recurring | Company-sponsored mutual funds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Available-for-sale investments		25,529		14,336				25,529				14,336
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Cash equivalents		56,631	[2]	59,281	[3]			56,631	[2]			59,281	[3]
Trading investments		4,830		0				4,830				0
Equity method investments		0		20,827				0				20,827
Available-for-sale investments		30,531		21,269				30,531				21,269
Derivative - assets		141		234				141				234
Derivative - liabilities		342		754				342				754
Fair Value, Measurements, Recurring | Level 1 | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative - assets				0								0
Derivative - liabilities		0		0				0				0
Fair Value, Measurements, Recurring | Level 1 | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative - assets		141		234				141				234
Derivative - liabilities		342		754				342				754
Fair Value, Measurements, Recurring | Level 1 | Common stocks
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		4,830						4,830
Available-for-sale investments		3,849		5,838				3,849				5,838
Fair Value, Measurements, Recurring | Level 1 | Fixed income securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		0		0				0				0
Fair Value, Measurements, Recurring | Level 1 | Limited partnership interests
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		0		0				0				0
Fair Value, Measurements, Recurring | Level 1 | Preferred securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Available-for-sale investments		1,153		1,095				1,153				1,095
Fair Value, Measurements, Recurring | Level 1 | Company-sponsored mutual funds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Available-for-sale investments		25,529		14,336				25,529				14,336
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Cash equivalents		0	[2]	0	[3]			0	[2]			0	[3]
Trading investments		5,710		7,000				5,710				7,000
Equity method investments		6,199		7,612				6,199				7,612
Available-for-sale investments		0		0				0				0
Derivative - assets		0		505				0				505
Derivative - liabilities		374		12				374				12
Fair Value, Measurements, Recurring | Level 2 | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative - assets				505								505
Derivative - liabilities		374		12				374				12
Fair Value, Measurements, Recurring | Level 2 | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative - assets		0		0				0				0
Derivative - liabilities		0		0				0				0
Fair Value, Measurements, Recurring | Level 2 | Common stocks
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		0						0
Available-for-sale investments		0		0				0				0
Fair Value, Measurements, Recurring | Level 2 | Fixed income securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		5,710		7,000				5,710				7,000
Fair Value, Measurements, Recurring | Level 2 | Limited partnership interests
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		0		0				0				0
Fair Value, Measurements, Recurring | Level 2 | Preferred securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Available-for-sale investments		0		0				0				0
Fair Value, Measurements, Recurring | Level 2 | Company-sponsored mutual funds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Available-for-sale investments		0		0				0				0
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Cash equivalents		0	[2]	0	[3]			0	[2]			0	[3]
Trading investments		2,311		2,509				2,311				2,509
Equity method investments		110		111				110				111
Available-for-sale investments		0		0				0				0
Derivative - assets		0		0				0				0
Derivative - liabilities		0		0				0				0
Fair Value, Measurements, Recurring | Level 3 | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative - assets				0								0
Derivative - liabilities		0		0				0				0
Fair Value, Measurements, Recurring | Level 3 | Commodity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative - assets		0		0				0				0
Derivative - liabilities		0		0				0				0
Fair Value, Measurements, Recurring | Level 3 | Common stocks
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		0						0
Available-for-sale investments		0		0				0				0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period				0		$ 0				$ 503		503
Purchases / contributions						0				0
Sales / distributions						0				(527)
Realized gains (losses)						0				24
Unrealized gains (losses)	[4]					0				0
Transfers into (out of) level 3						0				0
Balance at end of period						0				0
Fair Value, Measurements, Recurring | Level 3 | Fixed income securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		0		0				0				0
Fair Value, Measurements, Recurring | Level 3 | Limited partnership interests
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Trading investments		2,311		2,509				2,311				2,509
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period		2,463		2,416		2,378		2,509		2,740		2,740
Purchases / contributions		13				151		57		456
Sales / distributions		(98)				0		(245)		(721)
Realized gains (losses)		40				0		136		64
Unrealized gains (losses)		(107)	[5]			(113)	[4]	(146)	[5]	(123)	[4]
Transfers into (out of) level 3		0				0		0		0
Balance at end of period		2,311		2,509		2,416		2,311		2,416		2,509
Fair Value, Measurements, Recurring | Level 3 | Preferred securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Available-for-sale investments		0		0				0				0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period				0		0				3,325		3,325
Purchases / contributions						0				0
Sales / distributions						0				(4,000)
Realized gains (losses)						0				675
Unrealized gains (losses)	[4]					0				0
Transfers into (out of) level 3						0				0
Balance at end of period						0				0
Fair Value, Measurements, Recurring | Level 3 | GRP-TE
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period		110		107		105		111
Purchases / contributions		0				2		2
Sales / distributions		0				0		(6)
Realized gains (losses)		0				0		2
Unrealized gains (losses)		0	[5]			0	[4]	1	[5]
Transfers into (out of) level 3		0				0		0
Balance at end of period		110		111		107		110		107		111
Fair Value, Measurements, Recurring | Level 3 | GRP-TE/Offshore Fund
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period				107						528		528
Purchases / contributions										11
Sales / distributions										(463)
Realized gains (losses)										0
Unrealized gains (losses)	[4]									31
Transfers into (out of) level 3										0
Balance at end of period						$ 107				$ 107
Fair Value, Measurements, Recurring | Level 3 | Company-sponsored mutual funds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Available-for-sale investments		$ 0		$ 0				$ 0				$ 0
[1]	Includes $535 and $650 held as collateral attributable to the consolidated balances of Cohen & Steers Active Commodities Strategy Fund, Inc. (CDF) as of September 30, 2015 and December 31, 2014, respectively.
[2]	Comprised of investments in actively traded money market funds measured at net asset value.
[3]	Comprised of investments in actively traded money market funds measured at net asset value.
[4]	Pertains to unrealized gains (losses) from securities held at September 30, 2014.
[5]	Pertains to unrealized gains (losses) from securities held at September 30, 2015.

Derivatives (Details)

Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Derivative [Line Items]
Derivative Assets, Notional	$ 4,525		$ 4,525		$ 17,444
Derivative Assets, Fair Value	141		141		739
Derivative Liabilities, Notional	24,168		24,168		9,199
Derivative Liabilities, Fair Value	716		716		766
Derivative, Gains (Losses) on derivative, net	(1,713)	$ (946)	(2,388)	$ (1,104)
Due from broker
Derivative [Line Items]
Cash included in due from broker pledged as collateral	242		242		422
Trading investments
Derivative [Line Items]
Trading investments and pledged as collateral	535		535		650
Foreign exchange contracts
Derivative [Line Items]
Derivative Assets, Notional	0		0		11,349
Derivative Assets, Fair Value	0		0		505
Derivative Liabilities, Notional	18,423		18,423		222
Derivative Liabilities, Fair Value	374		374		12
Derivative, Gains (Losses) on derivative, net	(492)	1,275	(866)	767
Commodity contracts
Derivative [Line Items]
Derivative Assets, Notional	4,525		4,525		6,095
Derivative Assets, Fair Value	141		141		234
Derivative Liabilities, Notional	5,745		5,745		8,977
Derivative Liabilities, Fair Value	342		342		$ 754
Derivative, Gains (Losses) on derivative, net	$ (1,221)	$ (2,221)	$ (1,522)	$ (1,871)

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share [Abstract]
Anti-dilutive common stock equivalents excluded from computation (in shares)	90,000	0	36,000	0
Net income	$ 16,964	$ 18,037	$ 58,509	$ 60,561
Less: Net loss (income) attributable to redeemable noncontrolling interest	129	147	163	(749)
Net income attributable to common stockholders	$ 17,093	$ 18,184	$ 58,672	$ 59,812
Basic weighted average shares outstanding (shares)	45,500,000	44,839,000	45,402,000	44,766,000
Dilutive potential shares from restricted stock units (shares)	330,000	850,000	471,000	802,000
Diluted weighted average shares outstanding (shares)	45,830,000	45,689,000	45,873,000	45,568,000
Basic earnings per share attributable to common stockholders (in dollars per share)	$ 0.38	$ 0.41	$ 1.29	$ 1.34
Diluted earnings per share attributable to common stockholders (in dollars per share)	$ 0.37	$ 0.40	$ 1.28	$ 1.31

Income Taxes (Details)

Income Taxes (Details) - U.S. Federal, State, Local and Foreign Taxes	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Tax Contingency [Line Items]
Effective income tax rate reconciliation, percent	40.30%	37.10%	38.00%	36.00%
Effective income tax rate, expected for fiscal year			38.00%

Regulatory Requirements (Detail

Regulatory Requirements (Details) $ in Thousands	Sep. 30, 2015USD ($)
Securities Registered Domestically
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net Capital	$ 2,585
Excess Capital	2,428
Securities Regulated By Foreign Entities
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net Capital	66,790
Excess Capital	$ 64,161

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Related Party Transactions Summary [Abstract]
Gross realized gains	$ 79	$ 775	$ 743	$ 2,024
Gross realized losses	(548)	(15)	(792)	(136)
Affiliated Funds
Related Party Transactions, Revenue [Abstract]
Investment advisory and administrative fees	53,059	54,789	165,007	155,201
Distribution and service fees	3,961	3,738	11,881	10,952
Total	57,020	58,527	176,888	166,153
Related Party Transactions Summary [Abstract]
Proceeds from sales	1,172	0	1,172	192
Gross realized gains	0	0	0	0
Gross realized losses	(431)	0	(431)	(3)
Dividend income	171	0	471	0
Fund expenses, included in general and administrative expenses	1,998	$ 2,042	6,476	$ 6,581
Receivables due from company-sponsored mutual funds	$ 18,146		$ 18,146		$ 19,750

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015USD ($)
Commitments
Loss Contingencies [Line Items]
Long-term purchase commitment, time period	12 years
Commitment to invest
Loss Contingencies [Line Items]
Long-term purchase commitment	$ 5.1
Long-term committment, funded amount	$ 3.2

Concentration of Credit Risk (D

Concentration of Credit Risk (Details)	Sep. 30, 2015financial_institution
Risks and Uncertainties [Abstract]
Number of financial institutions	3

Subsequent Events (Details)

Subsequent Events (Details) - $ / shares	Nov. 03, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Subsequent Event [Line Items]
Dividends, Common Stock, Cash		$ 0.25	$ 0.22	$ 0.75	$ 0.66
Dividend Declared | Subsequent Event
Subsequent Event [Line Items]
Dividends, Common Stock, Cash	$ 0.25
Special cash dividend	$ 0.50