Cohen & Steers (CNS) 10-Q 5 Nov 20 2020 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2020	Nov. 02, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity File Number	001-32236
Entity Registrant Name	COHEN & STEERS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	14-1904657
Entity Address, Address Line One	280 Park Avenue,
Entity Address, State or Province	NY
Entity Address, City or Town	New York
Entity Address, Postal Zip Code	10017
City Area Code	212
Local Phone Number	832-3232
Title of 12(b) Security	Common Stock
Trading Symbol	CNS
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		47,785,725
Entity Central Index Key	0001284812
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false

Condensed Consolidated Statemen

Condensed Consolidated Statements of Financial Condition (Unaudited) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents		$ 96,305	$ 101,352
Investments ($71,941 and $82,829)	[1]	151,365	155,213
Accounts receivable		67,094	59,101
Due from brokers ($163 and $1,743)	[1]	2,443	1,743
Property and equipment—net		10,920	12,486
Operating lease right-of-use assets		33,649	38,440
Goodwill and intangible assets—net		20,023	19,560
Deferred income tax asset—net		7,073	7,091
Other assets ($1,247 and $1,041)	[1]	8,594	7,433
Total assets		397,466	402,419
Liabilities:
Accrued compensation		36,615	48,105
Distribution and service fees payable		6,722	7,318
Operating lease liabilities		37,669	43,349
Income tax payable		23,440	22,194
Due to brokers ($76 and $366)	[1]	293	366
Other liabilities and accrued expenses ($328 and $784)	[1]	11,553	13,972
Total liabilities		116,292	135,304
Commitments and contingencies
Redeemable noncontrolling interests		45,420	53,412
Stockholders’ equity:
Common stock, $0.01 par value; 500,000,000 shares authorized; 53,456,437 and 52,580,246 shares issued at September 30, 2020 and December 31, 2019, respectively		535	527
Additional paid-in capital		660,689	636,788
Accumulated deficit		(218,643)	(242,461)
Accumulated other comprehensive loss, net of tax		(6,065)	(6,326)
Less: Treasury stock, at cost, 5,674,510 and 5,329,820 shares at September 30, 2020 and December 31, 2019, respectively		(200,762)	(174,825)
Total stockholders’ equity		235,754	213,703
Total liabilities and stockholders’ equity		$ 397,466	$ 402,419
[1]	Asset and liability amounts in parentheses represent the aggregated balances at September 30, 2020 and December 31, 2019 attributable to variable interest entities consolidated by the Company. Refer to Note 4 for further discussion.

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Financial Condition - (Parenthetical) (Unaudited) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Investments ($71,941 and $82,829)	[1]	$ 151,365	$ 155,213
Other Assets	[1]	8,594	7,433
Due to brokers ($76 and $366)	[1]	293	366
Other liabilities and accrued expenses	[1]	$ 11,553	$ 13,972
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common stock, shares authorized (in shares)		500,000,000	500,000,000
Common stock, shares issued (in shares)		53,456,437	52,580,246
Treasury stock, shares (in shares)		5,674,510	5,329,820
GLI SICAV, GRP-CIP, SICAV GRE and SICAV RAP
Investments ($71,941 and $82,829)		$ 71,941	$ 82,829
Due from broker		163	1,743
Other Assets		1,247	1,041
Due to brokers ($76 and $366)		76	366
Other liabilities and accrued expenses		$ 328	$ 784
[1]	Asset and liability amounts in parentheses represent the aggregated balances at September 30, 2020 and December 31, 2019 attributable to variable interest entities consolidated by the Company. Refer to Note 4 for further discussion.

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue:
Total revenue		$ 111,159	$ 104,965	$ 311,076	$ 300,983
Expenses:
Employee compensation and benefits		41,060	37,877	113,997	108,438
Distribution and service fees		14,642	14,142	41,264	40,866
General and administrative		11,006	11,713	45,320	34,690
Depreciation and amortization		1,144	1,100	3,524	3,317
Total expenses		67,852	64,832	204,105	187,311
Operating income		43,307	40,133	106,971	113,672
Non-operating income:
Interest and dividend income—net		694	1,713	2,736	5,174
Gain (loss) from investments—net	[1]	3,279	4,472	(11,431)	20,210
Foreign currency gain (loss)—net		(742)	432	36	679
Total non-operating income (loss)		3,231	6,617	(8,659)	26,063
Income before provision for income taxes		46,538	46,750	98,312	139,735
Provision for income taxes		12,532	10,352	24,076	30,711
Net income		34,006	36,398	74,236	109,024
Less: Net (income) loss attributable to redeemable noncontrolling interests		(2,102)	(2,381)	6,760	(11,131)
Net income attributable to common stockholders		$ 31,904	$ 34,017	$ 80,996	$ 97,893
Earnings per share attributable to common stockholders:
Basic (in dollars per share)		$ 0.67	$ 0.72	$ 1.70	$ 2.07
Diluted (in dollars per share)		0.66	0.70	1.67	2.03
Dividends declared per share (in dollars per share)		$ 0.39	$ 0.36	$ 1.17	$ 1.08
Weighted average shares outstanding:
Basic (shares)		47,855	47,316	47,778	47,256
Diluted (shares)		48,681	48,412	48,588	48,118
Investment advisory and administration fees
Revenue:
Total revenue		$ 103,160	$ 96,763	$ 287,097	$ 277,421
Distribution and service fees
Revenue:
Total revenue		7,572	7,681	22,285	22,072
Other
Revenue:
Total revenue		$ 427	$ 521	$ 1,694	$ 1,490
[1]	Included net income (loss) attributable to redeemable noncontrolling interests.

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 34,006	$ 36,398	$ 74,236	$ 109,024
Less: Net (income) loss attributable to redeemable noncontrolling interests	(2,102)	(2,381)	6,760	(11,131)
Net income attributable to common stockholders	31,904	34,017	80,996	97,893
Foreign currency translation income (loss)	1,357	(1,900)	261	(1,800)
Total comprehensive income attributable to common stockholders	$ 33,261	$ 32,117	$ 81,257	$ 96,093

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Changes in Stockholders' Equity and Redeemable Noncontrolling Interest (Unaudited) - USD ($) $ in Thousands	Total	Common stocks	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss), Net of Tax	Redeemable Noncontrolling Interests	Treasury Stock
Beginning balance at Dec. 31, 2018	$ 222,646	$ 518	$ 602,272	$ (208,404)	$ (7,323)		$ (164,417)
Beginning balance (redeemable noncontrolling interest) at Dec. 31, 2018						$ 114,192
Dividends	(52,989)			(52,989)
Issuance of common stock	727	9	718
Repurchase of common stock	(10,408)						(10,408)
Issuance of restricted stock units	2,718		2,718
Amortization of restricted stock units	20,129		20,129
Forfeitures of restricted stock units	(15)		(15)
Net Income (Loss) Attributable to Parent	97,893			97,893
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest						11,131
Other comprehensive income (loss), net of tax	(1,800)				(1,800)
Net contributions (distributions) attributable to redeemable noncontrolling interests						3,171
Net consolidation (deconsolidation) of Company-sponsored funds						(75,385)
Ending balance at Sep. 30, 2019	$ 278,901	527	625,822	(163,500)	(9,123)		(174,825)
Ending balance (redeemable noncontrolling interest) at Sep. 30, 2019						53,109
Dividends declared per share (in dollars per share)	$ 1.08
Beginning balance at Jun. 30, 2019	$ 256,375	526	617,726	(179,852)	(7,223)		(174,802)
Beginning balance (redeemable noncontrolling interest) at Jun. 30, 2019						38,104
Dividends	(17,665)			(17,665)
Issuance of common stock	185	1	184
Repurchase of common stock	(23)						(23)
Issuance of restricted stock units	1,135		1,135
Amortization of restricted stock units	6,784		6,784
Forfeitures of restricted stock units	(7)		(7)
Net Income (Loss) Attributable to Parent	34,017			34,017
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest						2,381
Other comprehensive income (loss), net of tax	(1,900)				(1,900)
Net contributions (distributions) attributable to redeemable noncontrolling interests						19,805
Ending balance at Sep. 30, 2019	$ 278,901	527	625,822	(163,500)	(9,123)		(174,825)
Ending balance (redeemable noncontrolling interest) at Sep. 30, 2019						53,109
Dividends declared per share (in dollars per share)	$ 0.36
Beginning balance at Dec. 31, 2019	$ 213,703	527	636,788	(242,461)	(6,326)		(174,825)
Beginning balance (redeemable noncontrolling interest) at Dec. 31, 2019						53,412
Dividends	(57,178)			(57,178)
Issuance of common stock	835	8	827
Repurchase of common stock	(25,937)						(25,937)
Issuance of restricted stock units	1,721		1,721
Amortization of restricted stock units	21,398		21,398
Forfeitures of restricted stock units	(45)		(45)
Net Income (Loss) Attributable to Parent	80,996			80,996
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest						(6,760)
Other comprehensive income (loss), net of tax	261				261
Net contributions (distributions) attributable to redeemable noncontrolling interests						(1,232)
Ending balance at Sep. 30, 2020	$ 235,754	535	660,689	(218,643)	(6,065)		(200,762)
Ending balance (redeemable noncontrolling interest) at Sep. 30, 2020						45,420
Dividends declared per share (in dollars per share)	$ 1.17
Beginning balance at Jun. 30, 2020	$ 213,543	535	652,579	(231,409)	(7,422)		(200,740)
Beginning balance (redeemable noncontrolling interest) at Jun. 30, 2020						43,073
Dividends	(19,138)			(19,138)
Issuance of common stock	225	0	225
Repurchase of common stock	(22)						(22)
Issuance of restricted stock units	652		652
Amortization of restricted stock units	7,247		7,247
Forfeitures of restricted stock units	(14)		(14)
Net Income (Loss) Attributable to Parent	31,904			31,904
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest						2,102
Other comprehensive income (loss), net of tax	1,357				1,357
Net contributions (distributions) attributable to redeemable noncontrolling interests						245
Ending balance at Sep. 30, 2020	$ 235,754	$ 535	$ 660,689	$ (218,643)	$ (6,065)		$ (200,762)
Ending balance (redeemable noncontrolling interest) at Sep. 30, 2020						$ 45,420
Dividends declared per share (in dollars per share)	$ 0.39

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income		$ 74,236	$ 109,024
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Stock-based compensation expense		22,002	21,019
Amortization of deferred commissions		1,309	736
Depreciation and amortization		3,524	3,317
Amortization of right-of-use assets		4,791	7,655
Amortization (accretion) of premium (discount) on held-to-maturity investments		(194)	(408)
(Gain) loss from investments—net	[1]	11,431	(20,210)
Deferred income taxes		43	108
Foreign currency (gain) losses		(559)	(40)
Changes in operating assets and liabilities:
Accounts receivable		(7,434)	(15,193)
Due from brokers		(700)	(945)
Deferred commissions		(1,075)	(1,067)
Investments within consolidated funds		545	(15,654)
Other assets		(1,194)	(3,525)
Accrued compensation		(11,490)	(6,299)
Distribution and service fees payable		(596)	10
Operating lease liabilities		(5,680)	(8,257)
Due to brokers		(73)	1,312
Income tax payable		1,246	1,491
Other liabilities and accrued expenses		(2,944)	704
Net cash provided by (used in) operating activities		87,188	73,778
Cash flows from investing activities:
Purchases of investments		(58,679)	(47,742)
Proceeds from sales of investments		51,059	70,460
Purchases of property and equipment		(1,962)	(2,197)
Net cash provided by (used in) investing activities		(9,582)	20,521
Cash flows from financing activities:
Issuance of common stock		710	619
Repurchase of common stock		(25,937)	(10,408)
Dividends to stockholders		(55,971)	(51,068)
Distributions to redeemable noncontrolling interest		(5,774)	(35,978)
Contributions from redeemable noncontrolling interests		4,542	39,149
Net cash provided by (used in) financing activities		(82,430)	(57,686)
Net increase (decrease) in cash and cash equivalents		(4,824)	36,613
Effect of foreign exchange rate changes on cash and cash equivalents		(223)	(1,018)
Cash and cash equivalents, beginning of the period		101,352	92,733
Cash and cash equivalents, end of the period		96,305	128,328
Supplemental Cash Flow Information [Abstract]
Income taxes paid		25,425	29,446
Proceeds from Income tax refunds		2,662	348
Restricted stock unit dividend equivalents, net of forfeitures		1,207	$ 1,921
SICAV Preferred
Supplemental Cash Flow Information [Abstract]
Net consolidation (deconsolidation) of Company-sponsored funds		114,192
SICAV GRE
Supplemental Cash Flow Information [Abstract]
Noncontrolling interest, period increase (decrease)		$ 45,988
[1]	Included net income (loss) attributable to redeemable noncontrolling interests.

Organization and Description of

Organization and Description of Business	9 Months Ended
	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	Organization and Description of BusinessCohen & 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), Cohen & Steers Japan Limited (CSJL) and Cohen & Steers Ireland Ltd. (CSIL) (collectively, the Company).The Company is a global investment manager specializing in liquid real assets, including real estate securities, listed infrastructure 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, Dublin, Hong Kong and Tokyo.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	9 Months Ended
	Sep. 30, 2020
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, 2019. Recently Adopted Accounting Pronouncements —In January 2017, the Financial Accounting Standards Board (FASB) issued guidance to simplify the goodwill impairment test by removing the requirement to perform a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. This new guidance became effective on January 1, 2020. The Company's adoption of the new standard did not have a material effect on its condensed consolidated financial statements and related disclosures. In June 2016, the FASB issued guidance on the measurement of credit losses on financial instruments. This standard amended guidance related to reporting credit losses for financial assets measured at amortized cost and replaced the incurred loss impairment model with a current expected credit loss (CECL) model. CECL requires a company to estimate lifetime expected credit losses based on relevant information about historical events, current conditions and reasonable and supportable forecasts. This new guidance became effective on January 1, 2020. The Company's adoption of the new standard did not have a material effect on its condensed consolidated financial statements and related disclosures. 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 due to factors we cannot fully predict including the extent of the impact to the Company's business from the ongoing COVID-19 pandemic. The extent to which the COVID-19 pandemic may continue to impact the Company's business, results of operations, financial condition or liquidity could affect the Company's accounting estimates and will depend on ongoing and future developments which are highly uncertain and cannot be predicted, including the duration and severity of the pandemic, the prospects for a sustained recovery in the financial markets and the length of time it will take for the Company's workforce to fully and safely return to the workplace. Consolidation of Company-sponsored Funds —Investments in Company-sponsored funds and management fees are evaluated at inception and thereafter, if there is a reconsideration event, in order to determine whether to apply the Variable Interest Entity (VIE) model or the Voting Interest Entity (VOE) model. In performing this analysis, all of the Company's management fees are presumed to be commensurate and at market and are therefore not considered variable interests. A VIE is an entity in which either (i) the equity investment at risk is not sufficient to permit the entity to finance its own activities without additional financial support or (ii) 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 (i) the power to direct the activities of the VIE that most significantly affect its performance, and (ii) the obligation to absorb losses of the entity or the right to receive benefits from the entity that could potentially be significant to the VIE. 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 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. VIEs for which the Company is deemed to be the primary beneficiary are consolidated. Investments in Company-sponsored funds that are determined to be VOEs are consolidated when the Company's ownership interest is greater than 50% of the outstanding voting interests of the fund or when the Company is the general partner of the fund and the limited partners do not have substantive kick-out or participating rights in the fund. The Company records noncontrolling interests in consolidated Company-sponsored funds for which the Company's ownership is less than 100%. Cash and Cash Equivalents —Cash and cash equivalents are on deposit with several highly rated financial institutions and include short-term, highly-liquid investments, which are readily convertible into cash and have original maturities of three months or less. Due from/to Brokers —The Company, including the consolidated Company-sponsored funds, may transact with brokers for certain investment activities. The clearing and custody operations for these investment activities are performed pursuant to contractual agreements. The due from/to brokers balance represents cash and/or cash collateral balances at brokers/custodians and/or receivables and payables for unsettled securities transactions with brokers. Investments —Management of the Company determines the appropriate classification of its investments at the time of purchase and re-evaluates such determination no less than on a quarterly basis. At September 30, 2020, the Company's investments were comprised of the following: • Equity investments at fair value, which generally represent equity securities held within the consolidated Company-sponsored funds, individual equity securities held directly for the purposes of establishing performance track records and seed investments in Company-sponsored open-end funds where the Company has neither control nor the ability to exercise significant influence. • Trading investments, which generally represent debt securities held within the consolidated Company-sponsored funds and individual debt securities held directly for the purposes of establishing performance track records. • Held-to-maturity investments, which generally represent corporate investments in U.S. Treasury securities recorded at amortized cost. Under the CECL model, any expected credit losses are recognized as an allowance, which represents an adjustment to the amortized costs basis. The Company did not record any provision for credit losses on these securities during the nine months ended September 30, 2020. • Equity method investments, which generally represent seed investments in Company-sponsored funds in which the Company owns between 20-50% of the outstanding voting interests or when it is determined that the Company is able to exercise significant influence but not control over the investments. When using the equity method, the Company recognizes its respective share of net income or loss for the period which is recorded as gain (loss) from investments—net in the Company's condensed consolidated statements of operations. Realized and unrealized gains and losses on equity investments at fair value, trading investments and equity method investments are recorded in gain (loss) from investments—net in the Company's condensed consolidated statements of operations. From time to time, the Company, including the consolidated Company-sponsored funds, may enter into derivative contracts, including options, futures and swaps contracts, to gain exposure to the underlying commodities markets or to economically hedge market risk of the underlying portfolios. Gains and losses on derivative contracts are recorded as gain (loss) from 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 on the Company's condensed consolidated statements of financial condition. Additionally, from time to time, the Company, including the consolidated Company-sponsored funds, may enter into forward foreign exchange contracts to economically hedge its currency exposure. These instruments are measured at fair value based on the prevailing forward exchange rate with gains and losses recorded in foreign currency gain (loss)—net 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 on the Company’s condensed consolidated statements of financial condition. Leases —The Company determines if an arrangement is a lease at inception. The Company has operating leases for corporate offices and certain information technology equipment and these leases are included in operating lease right-of-use (ROU) assets and operating lease liabilities on the Company’s condensed consolidated statements of financial condition. ROU assets represent the right to use an underlying asset for the lease term and lease liabilities represent obligations to make lease payments arising from the lease. Operating lease ROU assets and lease liabilities are recognized at commencement date based on the net present value of lease payments over the lease term. The majority of the Company’s lease agreements do not provide an implicit rate. As a result, the Company used an incremental borrowing rate based on the information available as of the lease commencement dates in determining the present value of lease payments. The operating lease ROU asset reflects any upfront lease payments made as well as lease incentives received. The lease terms may include options to extend or terminate the lease and these are factored into the determination of the ROU asset and lease liability at lease inception when and if it is reasonably certain that the Company will exercise that option. Lease expense for fixed lease payments is recognized on a straight-line basis over the lease term. The Company has certain lease agreements with non-lease components such as maintenance and executory costs, which are accounted for separately and not included in ROU assets. ROU assets are tested for impairment whenever changes in facts or circumstances indicate that the carrying amount of an asset may not be recoverable. Modification of a lease term would result in re-measurement of the lease liability and a corresponding adjustment to the ROU asset. 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. Redeemable Noncontrolling Interests —Redeemable noncontrolling interests represent third-party interests in the consolidated Company-sponsored funds. These interests are redeemable at the option of the investors and therefore are not treated as permanent equity. Redeemable noncontrolling interest is recorded at fair value which approximates the redemption value at each reporting period. Investment Advisory and Administration Fees —The Company earns revenue by providing asset management services to institutional accounts, Company-sponsored open-end and closed-end funds as well as model-based portfolios. Investment advisory fees are earned pursuant to the terms of investment management agreements and are generally based on a contractual fee rate applied to the average assets in the portfolio. The Company also earns administration fees from certain Company-sponsored open-end 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 when earned and is recorded net of any fund reimbursements. The investment advisory and administration contracts each include a single performance obligation as the services provided are not separately identifiable and are accounted for as a series satisfied over time using a time-based method (days elapsed). Additionally, investment advisory and administration fees represent variable consideration, as fees are based on average assets under management which fluctuate daily. In certain instances, the Company may earn performance fees when specified performance hurdles are met during the performance period. Performance fees are forms of variable consideration and are not recognized until it becomes probable that there will not be a significant reversal of the cumulative revenue recognized . Distribution and Service Fee Revenue —Distribution and service fee revenue is based on the average daily net assets of certain share classes of the Company's sponsored open-end funds distributed by CSS. Distribution and service fee revenue is earned daily and is generally recorded gross of any third-party distribution and service fee expense for applicable share classes. Distribution fee agreements include a single performance obligation that is satisfied at a point in time when an investor purchases shares in a Company-sponsored open-end fund. Distribution fees represent variable consideration, as fees are based on average assets under management which fluctuate daily. For all periods presented, a portion of the distribution fee revenue recognized in the period may relate to performance obligations satisfied (or partially satisfied) in prior periods. Service fee agreements include a single performance obligation as the services provided are not separately identifiable and are accounted for as a series satisfied over time using a time-based method (days elapsed). Service fees represent variable consideration, as fees are based on average assets under management which fluctuate daily. Distribution and Service Fee Expense —Distribution and service fee expense includes distribution fees, shareholder servicing fees and intermediary assistance payments. Distribution and service fee expense is recorded on an accrual basis. Distribution fees represent payments made to qualified intermediaries for (i) assistance in connection with the distribution of the Company's sponsored open-end funds' shares and (ii) for other expenses such as advertising, 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. Distribution fees are based on the average daily net assets under management of certain share classes of certain of the funds. Shareholder servicing fees represent payments made to qualified intermediaries for shareholder account service and maintenance. These services are provided pursuant to written agreements with such qualified institutions. Shareholder servicing fees are generally based on the average assets under management. Intermediary assistance payments represent payments to qualified intermediaries for activities related to distribution, shareholder servicing and marketing and support of the Company's sponsored open-end funds and are incremental to those described above. Intermediary assistance payments are generally based on the average assets under management. Stock-based Compensation —The Company recognizes compensation expense for the grant-date fair value of awards of equity instruments to certain employees. This expense is recognized over the period during which employees are required to provide service. Forfeitures are recorded as incurred. 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 is based on the Company's best estimate of the effective tax rate expected to be applied to the full fiscal year adjusted for discrete items during the period. The calculation of tax liabilities involves dealing with uncertainties in the application of complex tax laws and regulations in a multitude of jurisdictions across the Company's global operations. A tax benefit from an uncertain tax position is recognized when it is more likely than not that the position will be sustained upon examination, including resolution of any related appeals or litigation processes, on the basis of the technical merits. The Company records potential interest and penalties related to uncertain tax positions in the provision for income taxes in the condensed consolidated statements of operations. 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 ($6,065,000) and ($6,326,000) at September 30, 2020 and December 31, 2019, respectively. Gains or losses resulting from transactions denominated in currencies other than the U.S. dollar within certain foreign subsidiaries are included in non-operating income (loss) in the condensed consolidated statements of operations. Gains and losses arising on revaluation of U.S. dollar-denominated assets and liabilities held by foreign subsidiaries are also included in non-operating income (loss) in the Company’s 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 generally includes net income or loss attributable to common stockholders and amounts attributable to foreign currency translation gain (loss), net of tax. Recently Issued Accounting Pronouncements —In December 2019, the FASB issued guidance to simplify the accounting for income taxes. The guidance eliminates certain exceptions related to the rate approach for intra-period tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. It also clarifies and simplifies other aspects of the accounting for income taxes. This new guidance will be effective on January 1, 2021. The Company does not expect the adoption of the new standard to have a material effect on its condensed consolidated financial statements and related disclosures.

Revenue

Revenue	9 Months Ended
	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Revenue	Revenue The following tables summarize revenue recognized from contracts with customers by client domicile and by investment vehicle: Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Client domicile: North America $ 91,298 $ 90,674 $ 263,712 $ 258,384 Japan 8,011 8,552 23,913 25,170 Asia Pacific excluding Japan 3,013 3,387 8,621 9,093 Europe, Middle East and Africa 8,837 2,352 14,830 8,336 Total $ 111,159 $ 104,965 $ 311,076 $ 300,983 Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Investment vehicle: Open-end funds (1) $ 59,176 $ 56,220 $ 168,333 $ 158,680 Closed-end funds 18,676 20,714 55,810 59,768 Institutional accounts 32,880 27,510 85,239 81,045 Other 427 521 1,694 1,490 Total $ 111,159 $ 104,965 $ 311,076 $ 300,983 ________________________ (1) Included distribution and service fees of $7.6 million and $7.7 million for the three months ended September 30, 2020 and 2019, respectively, and $22.3 million and $22.1 million for the nine months ended September 30, 2020 and 2019, respectively.

Investments

Investments	9 Months Ended
	Sep. 30, 2020
Investments [Abstract]
Investments	Investments The following table summarizes the Company's investments: (in thousands) September 30, December 31, Equity investments at fair value $ 83,492 $ 89,872 Trading 17,406 14,980 Held-to-maturity carried at amortized cost (1) 49,976 49,807 Equity method 491 554 Total investments $ 151,365 $ 155,213 _________________________ (1) Held-to-maturity investments had a fair value of approximately $50.1 million and $50.0 million at September 30, 2020 and December 31, 2019, respectively. These securities would be classified as level 2 within the fair value hierarchy if carried at fair value. Original maturities ranged from 3 to 24 months at September 30, 2020 and December 31, 2019. The Company seeded one new fund during the nine months ended September 30, 2020 and two new funds during the nine months ended September 30, 2019. The following table summarizes gain (loss)—net from investments: Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Net realized gains (losses) during the period $ (177) $ 1,359 $ (5,598) $ 5,118 Net unrealized gains (losses) during the period on investments still held at the end of the period 3,456 3,113 (5,833) 15,092 Gain (loss) from investments—net (1) $ 3,279 $ 4,472 $ (11,431) $ 20,210 ________________________ (1) Included net income (loss) attributable to redeemable noncontrolling interests. At September 30, 2020 and December 31, 2019, the Company's consolidated VIEs included the Cohen & Steers SICAV Global Listed Infrastructure Fund (GLI SICAV), the Cohen & Steers Co-Investment Partnership, L.P. (GRP-CIP), SICAV GRE and the Cohen & Steers SICAV Diversified Real Assets Fund (SICAV RAP). The following tables summarize the condensed consolidated statements of financial condition attributable to the Company's consolidated VIEs: September 30, 2020 (in thousands) GLI SICAV GRP-CIP SICAV GRE SICAV RAP Total Assets (1) Investments $ 6,585 $ 277 $ 34,924 $ 30,155 $ 71,941 Due from brokers 3 64 71 25 163 Other assets 109 — 806 332 1,247 Total assets $ 6,697 $ 341 $ 35,801 $ 30,512 $ 73,351 Liabilities (1) Due to brokers $ — $ — $ 35 $ 41 $ 76 Other liabilities and accrued expenses 42 5 207 74 328 Total liabilities $ 42 $ 5 $ 242 $ 115 $ 404 December 31, 2019 (in thousands) GLI SICAV GRP-CIP SICAV GRE SICAV RAP Total Assets (1) Investments $ 7,048 $ 337 $ 45,468 $ 29,976 $ 82,829 Due from brokers 264 203 663 613 1,743 Other assets 92 — 681 268 1,041 Total assets $ 7,404 $ 540 $ 46,812 $ 30,857 $ 85,613 Liabilities (1) Due to brokers $ 45 $ — $ 92 $ 229 $ 366 Other liabilities and accrued expenses 100 5 466 213 784 Total liabilities $ 145 $ 5 $ 558 $ 442 $ 1,150 _________________________ (1) The assets may only be used to settle obligations of each VIE and the liabilities are the sole obligation of each VIE, for which creditors do not have recourse to the general credit of the Company.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2020
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. If the asset or liability has a specified (contractual) term, the level 2 input must be observable for substantially the full term of the asset or liability. • 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. The following tables present fair value measurements: September 30, 2020 (in thousands) Level 1 Level 2 Level 3 Investments Investments Total Cash equivalents $ 82,751 $ — $ — $ — $ — $ 82,751 Equity investments at fair value Common stocks $ 81,505 $ — $ — $ — $ — $ 81,505 Company-sponsored funds 133 — — — — 133 Limited partnership interests 619 — — 277 — 896 Preferred securities 829 12 — — — 841 Other — — — 117 — 117 Total $ 83,086 $ 12 $ — $ 394 $ — $ 83,492 Trading investments Fixed income $ — $ 17,406 $ — $ — $ — $ 17,406 Held-to-maturity investments $ — $ — $ — $ — $ 49,976 $ 49,976 Equity method investments $ — $ — $ — $ 491 $ — $ 491 Total investments $ 83,086 $ 17,418 $ — $ 885 $ 49,976 $ 151,365 Derivatives - assets Futures - commodities $ 663 $ — $ — $ — $ — $ 663 Total return swaps - commodities — 37 — — — 37 Forward contracts - foreign exchange — 9 — — — 9 Total $ 663 $ 46 $ — $ — $ — $ 709 Derivatives - liabilities Futures - commodities $ 283 $ — $ — $ — $ — $ 283 Total return swaps - equities — 45 — — — 45 Forward contracts - foreign exchange — 288 — — — 288 Total $ 283 $ 333 $ — $ — $ — $ 616 December 31, 2019 (in thousands) Level 1 Level 2 Level 3 Investments Investments Total Cash equivalents $ 85,889 $ — $ — $ — $ — $ 85,889 Equity investments at fair value Common stocks $ 87,408 $ — $ — $ — $ — $ 87,408 Company-sponsored funds 132 — — — — 132 Limited partnership interests 1,048 — — 337 — 1,385 Preferred securities 704 108 — — — 812 Other — — — 135 — 135 Total $ 89,292 $ 108 $ — $ 472 $ — $ 89,872 Trading investments Fixed income $ — $ 14,980 $ — $ — $ — $ 14,980 Held-to-maturity investments $ — $ — $ — $ — $ 49,807 $ 49,807 Equity method investments $ — $ — $ — $ 554 $ — $ 554 Total investments $ 89,292 $ 15,088 $ — $ 1,026 $ 49,807 $ 155,213 Derivatives - assets Futures - commodities $ 570 $ — $ — $ — $ — $ 570 Forward contracts - foreign exchange — 74 — — — 74 Total $ 570 $ 74 $ — $ — $ — $ 644 Derivatives - liabilities Futures - commodities $ 339 $ — $ — $ — $ — $ 339 Total return swaps - commodities — 173 — — — 173 Forward contracts - foreign exchange — 44 — — — 44 Total $ 339 $ 217 $ — $ — $ — $ 556 Cash equivalents were comprised of investments in actively traded U.S. Treasury money market funds measured at NAV. Equity investments at fair value classified as level 2 were comprised of certain preferred securities with predominately equity-like characteristics whose fair values are generally determined using third-party pricing services. The pricing services may utilize pricing models, and inputs into those models may include reported trades, executable bid and ask prices, broker-dealer quotations, prices or yields of similar securities, benchmark curves and other market information. The pricing services may use a matrix approach, which considers information regarding securities with similar characteristics to determine the valuation for a security. Trading investments classified as level 2 were comprised of U.S. Treasury securities and corporate debt securities. The fair value amounts were generally determined using third-party pricing services. The pricing services may utilize evaluated pricing models that vary by asset class and incorporate available trade, bid and other market information. Investments measured at NAV were comprised of certain investments measured at fair value using NAV (or its equivalent) as a practical expedient. These investments were comprised of: • Equity investments at fair value - included limited partner interests in limited partnership vehicles that invest in non-registered real estate funds and the Company's co-investment in a Cayman trust invested in global listed infrastructure securities (which is included in "Other" in the leveling table), both of which are valued based on the NAVs of the underlying investments. At September 30, 2020 and December 31, 2019, the Company did not have the ability to redeem the interests in the limited partnership vehicles; there were no contractual restrictions on the Company's ability to redeem its interest in the Cayman trust. • Equity method investments - included the Company's partnership interests in the Cohen & Steers Global Realty Partners III-TE, L.P. (GRP-TE) and the Cohen & Steers Global Realty Focus Fund (GRF), a series of Cohen & Steers Series LP. GRP-TE invests in non-registered real estate funds. The Company's ownership interest was approximately 0.2% and the Company did not have the ability to redeem the investment at either September 30, 2020 or December 31, 2019. GRF invests in global real estate investment trusts and other publicly traded real estate companies. The Company's ownership interest was approximately 0.7% and the Company had the ability to redeem the investment in GRF with 15 days' notice. The Company's risk with respect to both investments is limited to its equity ownership interest and any uncollected management fees. Held-to-maturity investments were comprised of U.S. Treasury securities, which were directly issued by the U.S. government, with original maturities of 3 to 24 months at September 30, 2020 and December 31, 2019. These securities were purchased with the intent to hold to maturity and are recorded at amortized cost. Investments measured at NAV and held-to-maturity investments have not been classified in the fair value hierarchy. The amounts presented in the above tables are intended to permit reconciliation of the fair value hierarchy to the amounts presented on the condensed consolidated statements of financial condition. Swap contracts classified as level 2 were valued based on the underlying futures contracts or equity indices. Foreign currency exchange contracts classified as level 2 were valued based on the prevailing forward exchange rate. Valuation Techniques In certain instances, debt, equity and preferred securities are valued on the basis of prices from an orderly transaction between market participants provided by reputable broker-dealers or independent pricing services. In determining the value of a particular investment, independent 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 generally performs reviews of valuations provided by broker-dealers or independent pricing services. Investments in Company-sponsored funds are valued at their closing price or NAV (or its equivalent) as a practical expedient. Foreign exchange contracts are valued based on the prevailing forward exchange rate, which is an input that is observable in active markets. 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 involve a significant degree of judgment, taking into consideration a combination of internal and external factors. Such investments, which are generally immaterial, 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.

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Derivatives The following tables summarize the notional amounts and fair value of the outstanding derivative financial instruments none of which are designated in a formal hedging relationship: As of September 30, 2020 Notional Amount Fair Value (1) (in thousands) Long Short Assets Liabilities Futures - commodities $ 12,675 $ 3,769 $ 663 $ 283 Total return swaps - commodities — 8,578 37 — Total return swaps - equities — 17,264 — 45 Forward contracts - foreign exchange — 16,842 9 288 $ 12,675 $ 46,453 $ 709 $ 616 As of December 31, 2019 Notional Amount Fair Value (1) (in thousands) Long Short Assets Liabilities Futures - commodities $ 14,394 $ 4,623 $ 570 $ 339 Total return swaps - commodities — 8,909 — 173 Forward contracts - foreign exchange — 10,787 74 44 $ 14,394 $ 24,319 $ 644 $ 556 ________________________ (1) The fair value of derivative financial instruments is recorded in other assets and other liabilities and accrued expenses on the Company's condensed consolidated statements of financial condition. Commodity swap contracts are utilized as economic hedges to reduce the overall risk of the Company's market exposure to seed investments in commodity futures. Equity swap contracts are utilized to economically hedge a portion of the market risk of certain seed investments, including certain investments held within consolidated Company-sponsored funds. The Company enters into foreign exchange contracts to sell currency to economically hedge exposure arising from certain non-U.S. dollar investment advisory fees. Cash included in due from brokers of approximately $2,180,000 on the condensed consolidated statement of financial condition at September 30, 2020 was held as collateral for swap contracts. Investments of approximately $1,546,000 and $1,713,000 on the condensed consolidated statements of financial condition at September 30, 2020 and December 31, 2019, respectively, were held as collateral for futures and swap contracts. The following table summarizes net gains (losses) from derivative financial instruments: Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Futures - commodities $ 740 $ (236) $ (949) $ 505 Total return swaps - commodities (708) 211 1,052 (135) Total return swaps - equities (45) — (45) — Forward contracts - foreign exchange (242) 198 (309) 162 Total (1) $ (255) $ 173 $ (251) $ 532 ________________________ (1) Gains and losses on derivative financial instruments are recorded as gain (loss) from investments—net in the Company's condensed consolidated statements of operations.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2020
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 determined using the treasury stock method. Common stock equivalents are comprised of dilutive potential shares from restricted stock unit awards and are excluded from the computation if their effect is anti-dilutive. The following table reconciles income and share data used in the basic and diluted earnings per share computations: Three Months Ended Nine Months Ended (in thousands, except per share data) 2020 2019 2020 2019 Net income $ 34,006 $ 36,398 $ 74,236 $ 109,024 Less: Net (income) loss attributable to redeemable noncontrolling interests (2,102) (2,381) 6,760 (11,131) Net income attributable to common stockholders $ 31,904 $ 34,017 $ 80,996 $ 97,893 Basic weighted average shares outstanding 47,855 47,316 47,778 47,256 Dilutive potential shares from restricted stock units 826 1,096 810 862 Diluted weighted average shares outstanding 48,681 48,412 48,588 48,118 Basic earnings per share attributable to common stockholders $ 0.67 $ 0.72 $ 1.70 $ 2.07 Diluted earnings per share attributable to common stockholders $ 0.66 $ 0.70 $ 1.67 $ 2.03 Anti-dilutive common stock equivalents excluded from the calculation 16 — — —

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes includes U.S. federal, state, local and foreign taxes. The effective tax rate for the three months ended September 30, 2020 was approximately 28.2%, compared with approximately 23.3% for the three months ended September 30, 2019. The effective tax rate for the three months ended September 30, 2020 differed from the U.S. federal statutory rate of 21.0% primarily due to state, local and foreign taxes as well as the effect of certain permanent differences, the most significant of which related to limitations on the deductibility of executive compensation. The effective tax rate for the three months ended September 30, 2019 differed from the U.S. federal statutory rate of 21.0% primarily due to state, local and foreign taxes, partially offset by the release of a portion of the valuation allowance associated with unrealized gains on the Company's seed investments. The effective tax rate for the nine months ended September 30, 2020 was approximately 22.9%, compared with approximately 23.9% for the nine months ended September 30, 2019. The effective tax rate for the nine months ended September 30, 2020 differed from the U.S. federal statutory rate of 21.0% primarily due to state, local and foreign taxes as well as the effect of certain permanent differences, the most significant of which related to limitations on the deductibility of executive compensation. These were partially offset by discrete tax items, primarily related to the appreciated value of the restricted stock units delivered in January 2020. The effective tax rate for the nine months ended September 30, 2019 differed from the U.S. federal statutory rate of 21.0% primarily due to state, local and foreign taxes, partially offset by the release of a portion of the valuation allowance associated with unrealized gains on the Company's seed investments and a discrete item related to the appreciated value of the restricted stock units delivered in January 2019. 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 was 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, 2020
Broker-Dealer, Net Capital Requirement, SEC Regulation [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 by the Rule. At September 30, 2020, CSS had net capital of approximately $2.8 million, which exceeded its requirement by approximately $2.6 million. 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 is subject to regulation by the Hong Kong Securities and Futures Commission. At September 30, 2020, CSAL had regulatory capital of approximately $3.5 million, which exceeded its minimum regulatory capital requirement by approximately $3.1 million. During the nine months ended September 30, 2020, CSAL paid dividends in the amount of approximately $12.9 million to its parent, CSCM. CSUK is subject to regulation by the United Kingdom Financial Conduct Authority. At September 30, 2020, CSUK had regulatory capital of approximately $27.4 million, which exceeded its minimum regulatory capital requirement by approximately $22.7 million. During the nine months ended September 30, 2020, CSUK paid a dividend in the amount of

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions The Company is an investment adviser to, and has administration agreements with, Company-sponsored funds for which certain employees are officers and/or directors. The following table summarizes the amount of revenue the Company earned from these Company-sponsored funds: Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Investment advisory and administration fees (1) $ 69,124 $ 68,224 $ 198,501 $ 193,329 Distribution and service fees 7,572 7,681 22,285 22,072 Total $ 76,696 $ 75,905 $ 220,786 $ 215,401 _________________________ (1) Investment advisory and administration fees are reflected net of fund reimbursements of $3.3 million and $3.2 million for the three months ended September 30, 2020 and 2019, respectively, and $9.4 million and $7.9 million for the nine months ended September 30, 2020 and 2019, respectively. The following table summarizes sales proceeds, gross realized gains, gross realized losses and dividend income from investments in Company-sponsored funds that are not consolidated: Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Proceeds from sales $ — $ — $ 7 $ 26,506 Gross realized gains — — — 32 Gross realized losses — — — (907) Dividend income 1 1 3 31 Included in accounts receivable at September 30, 2020 and December 31, 2019 are receivables due from Company-sponsored funds of approximately $25,670,000 and $26,701,000, respectively. Included in accounts payable at September 30, 2020 and December 31, 2019 are payables due to Company-sponsored funds of approximately $447,000 and $474,000, respectively.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2020
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, 2020, the Company had funded approximately $3.8 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 in which GRP-TE and GRP-CIP invest. The unfunded commitment is not recorded on the Company's condensed consolidated statements of financial condition.

Concentration of Credit Risk

Concentration of Credit Risk	9 Months Ended
	Sep. 30, 2020
Risks and Uncertainties [Abstract]
Concentration of Credit Risk	Concentration of Credit Risk The Company's cash and cash equivalents are principally on deposit with several highly rated 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, 2020
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 5, 2020, the Company declared quarterly and special cash dividends on its common stock in the amount of $0.39 and $1.00 per share, respectively. The dividends will be payable on December 1, 2020 to stockholders of record at the close of business on November 16, 2020. On October 27, 2020, the initial offering period of the Company's latest closed-end fund, the Cohen & Steers Tax-Advantaged Preferred Securities and Income Fund, concluded. In connection with the offering, the Company raised approximately $1.3 billion in proceeds, excluding leverage. In addition, the underwriters have an option to purchase, within 45 days, up to an additional 7.5 million shares at the public offering price of $25.00 per share. To date, the Company has incurred approximately $57.0 million in costs related to the offering.

Basis of Presentation and Sig_2

Basis of Presentation and Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements —In January 2017, the Financial Accounting Standards Board (FASB) issued guidance to simplify the goodwill impairment test by removing the requirement to perform a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. This new guidance became effective on January 1, 2020. The Company's adoption of the new standard did not have a material effect on its condensed consolidated financial statements and related disclosures. In June 2016, the FASB issued guidance on the measurement of credit losses on financial instruments. This standard amended guidance related to reporting credit losses for financial assets measured at amortized cost and replaced the incurred loss impairment model with a current expected credit loss (CECL) model. CECL requires a company to estimate lifetime expected credit losses based on relevant information about historical events, current conditions and reasonable and supportable forecasts. This new guidance became effective on January 1, 2020. The Company's adoption of the new standard did not have a material effect on its condensed consolidated financial statements and related disclosures.
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 due to factors we cannot fully predict including the extent of the impact to the Company's business from the ongoing COVID-19 pandemic. The extent to which the COVID-19 pandemic may continue to impact the Company's business, results of operations, financial condition or liquidity could affect the Company's accounting estimates and will depend on ongoing and future developments which are highly uncertain and cannot be predicted, including the duration and severity of the pandemic, the prospects for a sustained recovery in the financial markets and the length of time it will take for the Company's workforce to fully and safely return to the workplace.
Consolidation of Company-sponsored Funds	Consolidation of Company-sponsored Funds —Investments in Company-sponsored funds and management fees are evaluated at inception and thereafter, if there is a reconsideration event, in order to determine whether to apply the Variable Interest Entity (VIE) model or the Voting Interest Entity (VOE) model. In performing this analysis, all of the Company's management fees are presumed to be commensurate and at market and are therefore not considered variable interests. A VIE is an entity in which either (i) the equity investment at risk is not sufficient to permit the entity to finance its own activities without additional financial support or (ii) 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 (i) the power to direct the activities of the VIE that most significantly affect its performance, and (ii) the obligation to absorb losses of the entity or the right to receive benefits from the entity that could potentially be significant to the VIE. 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 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. VIEs for which the Company is deemed to be the primary beneficiary are consolidated. Investments in Company-sponsored funds that are determined to be VOEs are consolidated when the Company's ownership interest is greater than 50% of the outstanding voting interests of the fund or when the Company is the general partner of the fund and the limited partners do not have substantive kick-out or participating rights in the fund.
Cash and Cash Equivalents	Cash and Cash Equivalents —Cash and cash equivalents are on deposit with several highly rated financial institutions and include short-term, highly-liquid investments, which are readily convertible into cash and have original maturities of three months or less.
Due from/to Brokers	Due from/to Brokers —The Company, including the consolidated Company-sponsored funds, may transact with brokers for certain investment activities. The clearing and custody operations for these investment activities are performed pursuant to contractual agreements. The due from/to brokers balance represents cash and/or cash collateral balances at brokers/custodians and/or receivables and payables for unsettled securities transactions with brokers.
Investments	Investments —Management of the Company determines the appropriate classification of its investments at the time of purchase and re-evaluates such determination no less than on a quarterly basis. At September 30, 2020, the Company's investments were comprised of the following: • Equity investments at fair value, which generally represent equity securities held within the consolidated Company-sponsored funds, individual equity securities held directly for the purposes of establishing performance track records and seed investments in Company-sponsored open-end funds where the Company has neither control nor the ability to exercise significant influence. • Trading investments, which generally represent debt securities held within the consolidated Company-sponsored funds and individual debt securities held directly for the purposes of establishing performance track records. • Held-to-maturity investments, which generally represent corporate investments in U.S. Treasury securities recorded at amortized cost. Under the CECL model, any expected credit losses are recognized as an allowance, which represents an adjustment to the amortized costs basis. The Company did not record any provision for credit losses on these securities during the nine months ended September 30, 2020. • Equity method investments, which generally represent seed investments in Company-sponsored funds in which the Company owns between 20-50% of the outstanding voting interests or when it is determined that the Company is able to exercise significant influence but not control over the investments. When using the equity method, the Company recognizes its respective share of net income or loss for the period which is recorded as gain (loss) from investments—net in the Company's condensed consolidated statements of operations. Realized and unrealized gains and losses on equity investments at fair value, trading investments and equity method investments are recorded in gain (loss) from investments—net in the Company's condensed consolidated statements of operations. From time to time, the Company, including the consolidated Company-sponsored funds, may enter into derivative contracts, including options, futures and swaps contracts, to gain exposure to the underlying commodities markets or to economically hedge market risk of the underlying portfolios. Gains and losses on derivative contracts are recorded as gain (loss) from 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 on the Company's condensed consolidated statements of financial condition. Additionally, from time to time, the Company, including the consolidated Company-sponsored funds, may enter into forward foreign exchange contracts to economically hedge its currency exposure. These instruments are measured at fair value based on the prevailing forward exchange rate with gains and losses recorded in foreign currency gain (loss)—net 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 on the Company’s condensed consolidated statements of financial condition.
Leases	Leases —The Company determines if an arrangement is a lease at inception. The Company has operating leases for corporate offices and certain information technology equipment and these leases are included in operating lease right-of-use (ROU) assets and operating lease liabilities on the Company’s condensed consolidated statements of financial condition. ROU assets represent the right to use an underlying asset for the lease term and lease liabilities represent obligations to make lease payments arising from the lease. Operating lease ROU assets and lease liabilities are recognized at commencement date based on the net present value of lease payments over the lease term. The majority of the Company’s lease agreements do not provide an implicit rate. As a result, the Company used an incremental borrowing rate based on the information available as of the lease commencement dates in determining the present value of lease payments. The operating lease ROU asset reflects any upfront lease payments made as well as lease incentives received. The lease terms may include options to extend or terminate the lease and these are factored into the determination of the ROU asset and lease liability at lease inception when and if it is reasonably certain that the Company will exercise that option. Lease expense for fixed lease payments is recognized on a straight-line basis over the lease term. The Company has certain lease agreements with non-lease components such as maintenance and executory costs, which are accounted for separately and not included in ROU assets. ROU assets are tested for impairment whenever changes in facts or circumstances indicate that the carrying amount of an asset may not be recoverable. Modification of a lease term would result in re-measurement of the lease liability and a corresponding adjustment to the ROU asset.
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.
Redeemable Noncontrolling Interests	Redeemable Noncontrolling Interests —Redeemable noncontrolling interests represent third-party interests in the consolidated Company-sponsored funds. These interests are redeemable at the option of the investors and therefore are not treated as permanent equity. Redeemable noncontrolling interest is recorded at fair value which approximates the redemption value at each reporting period.
Investment Advisory and Administration Fees	Investment Advisory and Administration Fees —The Company earns revenue by providing asset management services to institutional accounts, Company-sponsored open-end and closed-end funds as well as model-based portfolios. Investment advisory fees are earned pursuant to the terms of investment management agreements and are generally based on a contractual fee rate applied to the average assets in the portfolio. The Company also earns administration fees from certain Company-sponsored open-end 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 when earned and is recorded net of any fund reimbursements. The investment advisory and administration contracts each include a single performance obligation as the services provided are not separately identifiable and are accounted for as a series satisfied over time using a time-based method (days elapsed). Additionally, investment advisory and administration fees represent variable consideration, as fees are based on average assets under management which fluctuate daily. In certain instances, the Company may earn performance fees when specified performance hurdles are met during the performance period. Performance fees are forms of variable consideration and are not recognized until it becomes probable that there will not be a significant reversal of the cumulative revenue recognized .
Distribution and Service Fee Revenue	Distribution and Service Fee Revenue —Distribution and service fee revenue is based on the average daily net assets of certain share classes of the Company's sponsored open-end funds distributed by CSS. Distribution and service fee revenue is earned daily and is generally recorded gross of any third-party distribution and service fee expense for applicable share classes. Distribution fee agreements include a single performance obligation that is satisfied at a point in time when an investor purchases shares in a Company-sponsored open-end fund. Distribution fees represent variable consideration, as fees are based on average assets under management which fluctuate daily. For all periods presented, a portion of the distribution fee revenue recognized in the period may relate to performance obligations satisfied (or partially satisfied) in prior periods. Service fee agreements include a single performance obligation as the services provided are not separately identifiable and are accounted for as a series satisfied over time using a time-based method (days elapsed). Service fees represent variable consideration, as fees are based on average assets under management which fluctuate daily.
Distribution and Service Fee Expense	Distribution and Service Fee Expense —Distribution and service fee expense includes distribution fees, shareholder servicing fees and intermediary assistance payments. Distribution and service fee expense is recorded on an accrual basis. Distribution fees represent payments made to qualified intermediaries for (i) assistance in connection with the distribution of the Company's sponsored open-end funds' shares and (ii) for other expenses such as advertising, 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. Distribution fees are based on the average daily net assets under management of certain share classes of certain of the funds. Shareholder servicing fees represent payments made to qualified intermediaries for shareholder account service and maintenance. These services are provided pursuant to written agreements with such qualified institutions. Shareholder servicing fees are generally based on the average assets under management. Intermediary assistance payments represent payments to qualified intermediaries for activities related to distribution, shareholder servicing and marketing and support of the Company's sponsored open-end funds and are incremental to those described above. Intermediary assistance payments are generally based on the average assets under management.
Stock-based Compensation	Stock-based Compensation —The Company recognizes compensation expense for the grant-date fair value of awards of equity instruments to certain employees. This expense is recognized over the period during which employees are required to provide service. Forfeitures are recorded as incurred.
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 is based on the Company's best estimate of the effective tax rate expected to be applied to the full fiscal year adjusted for discrete items during the period. The calculation of tax liabilities involves dealing with uncertainties in the application of complex tax laws and regulations in a multitude of jurisdictions across the Company's global operations. A tax benefit from an uncertain tax position is recognized when it is more likely than not that the position will be sustained upon examination, including resolution of any related appeals or litigation processes, on the basis of the technical merits. The Company records potential interest and penalties related to uncertain tax positions in the provision for income taxes in the condensed consolidated statements of operations.
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 ($6,065,000) and ($6,326,000) at September 30, 2020 and December 31, 2019, respectively. Gains or losses resulting from transactions denominated in currencies other than the U.S. dollar within certain foreign subsidiaries are included in non-operating income (loss) in the condensed consolidated statements of operations. Gains and losses arising on revaluation of U.S. dollar-denominated assets and liabilities held by foreign subsidiaries are also included in non-operating income (loss) in the Company’s 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 generally includes net income or loss attributable to common stockholders and amounts attributable to foreign currency translation gain (loss), net of tax.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements—In December 2019, the FASB issued guidance to simplify the accounting for income taxes. The guidance eliminates certain exceptions related to the rate approach for intra-period tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. It also clarifies and simplifies other aspects of the accounting for income taxes. This new guidance will be effective on January 1, 2021. The Company does not expect the adoption of the new standard to have a material effect on its condensed consolidated financial statements and related disclosures
Valuation Techniques	Valuation Techniques In certain instances, debt, equity and preferred securities are valued on the basis of prices from an orderly transaction between market participants provided by reputable broker-dealers or independent pricing services. In determining the value of a particular investment, independent 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 generally performs reviews of valuations provided by broker-dealers or independent pricing services. Investments in Company-sponsored funds are valued at their closing price or NAV (or its equivalent) as a practical expedient. Foreign exchange contracts are valued based on the prevailing forward exchange rate, which is an input that is observable in active markets. 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 involve a significant degree of judgment, taking into consideration a combination of internal and external factors. Such investments, which are generally immaterial, 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.

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables summarize revenue recognized from contracts with customers by client domicile and by investment vehicle: Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Client domicile: North America $ 91,298 $ 90,674 $ 263,712 $ 258,384 Japan 8,011 8,552 23,913 25,170 Asia Pacific excluding Japan 3,013 3,387 8,621 9,093 Europe, Middle East and Africa 8,837 2,352 14,830 8,336 Total $ 111,159 $ 104,965 $ 311,076 $ 300,983 Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Investment vehicle: Open-end funds (1) $ 59,176 $ 56,220 $ 168,333 $ 158,680 Closed-end funds 18,676 20,714 55,810 59,768 Institutional accounts 32,880 27,510 85,239 81,045 Other 427 521 1,694 1,490 Total $ 111,159 $ 104,965 $ 311,076 $ 300,983 ________________________ (1) Included distribution and service fees of $7.6 million and $7.7 million for the three months ended September 30, 2020 and 2019, respectively, and $22.3 million and $22.1 million for the nine months ended September 30, 2020 and 2019, respectively.

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2020
Investments [Abstract]
Summary Investment Holdings	The following table summarizes the Company's investments: (in thousands) September 30, December 31, Equity investments at fair value $ 83,492 $ 89,872 Trading 17,406 14,980 Held-to-maturity carried at amortized cost (1) 49,976 49,807 Equity method 491 554 Total investments $ 151,365 $ 155,213 _________________________ (1) Held-to-maturity investments had a fair value of approximately $50.1 million and $50.0 million at September 30, 2020 and December 31, 2019, respectively. These securities would be classified as level 2 within the fair value hierarchy if carried at fair value. Original maturities ranged from 3 to 24 months at September 30, 2020 and December 31, 2019.
Gain (Loss) on Investments	The following table summarizes gain (loss)—net from investments: Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Net realized gains (losses) during the period $ (177) $ 1,359 $ (5,598) $ 5,118 Net unrealized gains (losses) during the period on investments still held at the end of the period 3,456 3,113 (5,833) 15,092 Gain (loss) from investments—net (1) $ 3,279 $ 4,472 $ (11,431) $ 20,210 ________________________ (1) Included net income (loss) attributable to redeemable noncontrolling interests.
Schedule of Variable Interest Entities	The following tables summarize the condensed consolidated statements of financial condition attributable to the Company's consolidated VIEs: September 30, 2020 (in thousands) GLI SICAV GRP-CIP SICAV GRE SICAV RAP Total Assets (1) Investments $ 6,585 $ 277 $ 34,924 $ 30,155 $ 71,941 Due from brokers 3 64 71 25 163 Other assets 109 — 806 332 1,247 Total assets $ 6,697 $ 341 $ 35,801 $ 30,512 $ 73,351 Liabilities (1) Due to brokers $ — $ — $ 35 $ 41 $ 76 Other liabilities and accrued expenses 42 5 207 74 328 Total liabilities $ 42 $ 5 $ 242 $ 115 $ 404 December 31, 2019 (in thousands) GLI SICAV GRP-CIP SICAV GRE SICAV RAP Total Assets (1) Investments $ 7,048 $ 337 $ 45,468 $ 29,976 $ 82,829 Due from brokers 264 203 663 613 1,743 Other assets 92 — 681 268 1,041 Total assets $ 7,404 $ 540 $ 46,812 $ 30,857 $ 85,613 Liabilities (1) Due to brokers $ 45 $ — $ 92 $ 229 $ 366 Other liabilities and accrued expenses 100 5 466 213 784 Total liabilities $ 145 $ 5 $ 558 $ 442 $ 1,150 _________________________ (1) The assets may only be used to settle obligations of each VIE and the liabilities are the sole obligation of each VIE, for which creditors do not have recourse to the general credit of the Company.

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring	The following tables present fair value measurements: September 30, 2020 (in thousands) Level 1 Level 2 Level 3 Investments Investments Total Cash equivalents $ 82,751 $ — $ — $ — $ — $ 82,751 Equity investments at fair value Common stocks $ 81,505 $ — $ — $ — $ — $ 81,505 Company-sponsored funds 133 — — — — 133 Limited partnership interests 619 — — 277 — 896 Preferred securities 829 12 — — — 841 Other — — — 117 — 117 Total $ 83,086 $ 12 $ — $ 394 $ — $ 83,492 Trading investments Fixed income $ — $ 17,406 $ — $ — $ — $ 17,406 Held-to-maturity investments $ — $ — $ — $ — $ 49,976 $ 49,976 Equity method investments $ — $ — $ — $ 491 $ — $ 491 Total investments $ 83,086 $ 17,418 $ — $ 885 $ 49,976 $ 151,365 Derivatives - assets Futures - commodities $ 663 $ — $ — $ — $ — $ 663 Total return swaps - commodities — 37 — — — 37 Forward contracts - foreign exchange — 9 — — — 9 Total $ 663 $ 46 $ — $ — $ — $ 709 Derivatives - liabilities Futures - commodities $ 283 $ — $ — $ — $ — $ 283 Total return swaps - equities — 45 — — — 45 Forward contracts - foreign exchange — 288 — — — 288 Total $ 283 $ 333 $ — $ — $ — $ 616 December 31, 2019 (in thousands) Level 1 Level 2 Level 3 Investments Investments Total Cash equivalents $ 85,889 $ — $ — $ — $ — $ 85,889 Equity investments at fair value Common stocks $ 87,408 $ — $ — $ — $ — $ 87,408 Company-sponsored funds 132 — — — — 132 Limited partnership interests 1,048 — — 337 — 1,385 Preferred securities 704 108 — — — 812 Other — — — 135 — 135 Total $ 89,292 $ 108 $ — $ 472 $ — $ 89,872 Trading investments Fixed income $ — $ 14,980 $ — $ — $ — $ 14,980 Held-to-maturity investments $ — $ — $ — $ — $ 49,807 $ 49,807 Equity method investments $ — $ — $ — $ 554 $ — $ 554 Total investments $ 89,292 $ 15,088 $ — $ 1,026 $ 49,807 $ 155,213 Derivatives - assets Futures - commodities $ 570 $ — $ — $ — $ — $ 570 Forward contracts - foreign exchange — 74 — — — 74 Total $ 570 $ 74 $ — $ — $ — $ 644 Derivatives - liabilities Futures - commodities $ 339 $ — $ — $ — $ — $ 339 Total return swaps - commodities — 173 — — — 173 Forward contracts - foreign exchange — 44 — — — 44 Total $ 339 $ 217 $ — $ — $ — $ 556

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The following tables summarize the notional amounts and fair value of the outstanding derivative financial instruments none of which are designated in a formal hedging relationship: As of September 30, 2020 Notional Amount Fair Value (1) (in thousands) Long Short Assets Liabilities Futures - commodities $ 12,675 $ 3,769 $ 663 $ 283 Total return swaps - commodities — 8,578 37 — Total return swaps - equities — 17,264 — 45 Forward contracts - foreign exchange — 16,842 9 288 $ 12,675 $ 46,453 $ 709 $ 616 As of December 31, 2019 Notional Amount Fair Value (1) (in thousands) Long Short Assets Liabilities Futures - commodities $ 14,394 $ 4,623 $ 570 $ 339 Total return swaps - commodities — 8,909 — 173 Forward contracts - foreign exchange — 10,787 74 44 $ 14,394 $ 24,319 $ 644 $ 556 ________________________ (1) The fair value of derivative financial instruments is recorded in other assets and other liabilities and accrued expenses on the Company's condensed consolidated statements of financial condition.
Gains (losses) on Derivatives	The following table summarizes net gains (losses) from derivative financial instruments: Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Futures - commodities $ 740 $ (236) $ (949) $ 505 Total return swaps - commodities (708) 211 1,052 (135) Total return swaps - equities (45) — (45) — Forward contracts - foreign exchange (242) 198 (309) 162 Total (1) $ (255) $ 173 $ (251) $ 532 ________________________ (1) Gains and losses on derivative financial instruments are recorded as gain (loss) from investments—net in the Company's condensed consolidated statements of operations.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table reconciles income and share data used in the basic and diluted earnings per share computations: Three Months Ended Nine Months Ended (in thousands, except per share data) 2020 2019 2020 2019 Net income $ 34,006 $ 36,398 $ 74,236 $ 109,024 Less: Net (income) loss attributable to redeemable noncontrolling interests (2,102) (2,381) 6,760 (11,131) Net income attributable to common stockholders $ 31,904 $ 34,017 $ 80,996 $ 97,893 Basic weighted average shares outstanding 47,855 47,316 47,778 47,256 Dilutive potential shares from restricted stock units 826 1,096 810 862 Diluted weighted average shares outstanding 48,681 48,412 48,588 48,118 Basic earnings per share attributable to common stockholders $ 0.67 $ 0.72 $ 1.70 $ 2.07 Diluted earnings per share attributable to common stockholders $ 0.66 $ 0.70 $ 1.67 $ 2.03 Anti-dilutive common stock equivalents excluded from the calculation 16 — — —

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2020
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following table summarizes the amount of revenue the Company earned from these Company-sponsored funds: Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Investment advisory and administration fees (1) $ 69,124 $ 68,224 $ 198,501 $ 193,329 Distribution and service fees 7,572 7,681 22,285 22,072 Total $ 76,696 $ 75,905 $ 220,786 $ 215,401 _________________________ (1) Investment advisory and administration fees are reflected net of fund reimbursements of $3.3 million and $3.2 million for the three months ended September 30, 2020 and 2019, respectively, and $9.4 million and $7.9 million for the nine months ended September 30, 2020 and 2019, respectively. The following table summarizes sales proceeds, gross realized gains, gross realized losses and dividend income from investments in Company-sponsored funds that are not consolidated: Three Months Ended Nine Months Ended (in thousands) 2020 2019 2020 2019 Proceeds from sales $ — $ — $ 7 $ 26,506 Gross realized gains — — — 32 Gross realized losses — — — (907) Dividend income 1 1 3 31

Basis of Presentation and Sig_3

Basis of Presentation and Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ (6,065)	$ (6,326)

Revenue (Details)

Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Total revenue		$ 111,159	$ 104,965	$ 311,076	$ 300,983
Distribution and service fees
Disaggregation of Revenue [Line Items]
Total revenue		7,572	7,681	22,285	22,072
Open-end funds
Disaggregation of Revenue [Line Items]
Total revenue	[1]	59,176	56,220	168,333	158,680
Closed-end funds
Disaggregation of Revenue [Line Items]
Total revenue		18,676	20,714	55,810	59,768
Institutional accounts
Disaggregation of Revenue [Line Items]
Total revenue		32,880	27,510	85,239	81,045
Other
Disaggregation of Revenue [Line Items]
Total revenue	[2]	427	521	1,694	1,490
North America
Disaggregation of Revenue [Line Items]
Total revenue		91,298	90,674	263,712	258,384
Japan
Disaggregation of Revenue [Line Items]
Total revenue		8,011	8,552	23,913	25,170
Asia, excluding Japan
Disaggregation of Revenue [Line Items]
Total revenue		3,013	3,387	8,621	9,093
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenue		$ 8,837	$ 2,352	$ 14,830	$ 8,336
[1]	Included distribution and service fees of $7.6 million and $7.7 million for the three months ended September 30, 2020 and 2019, respectively, and $22.3 million and $22.1 million for the nine months ended September 30, 2020 and 2019, respectively.
[2]	Forward contracts - foreign exchange

Investments Trading and Equity

Investments Trading and Equity Investments (Details) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2020USD ($)		Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)new_funds_seeded		Sep. 30, 2019USD ($)new_funds_seeded	Dec. 31, 2019USD ($)
Trading Securities and Other Trading Assets [Line Items]
Debt Securities, Held-to-maturity, Fair Value		$ 50,100			$ 50,100			$ 50,000
Number of new funds seeded | new_funds_seeded					1		2
Equity investments at fair value				$ 83,492			$ 83,492	89,872
Equity method investments				491			491	554
Trading				17,406			17,406	14,980
Held-to-maturity				49,976			49,976	49,807	[1]
Investments ($71,941 and $82,829)		151,365	[2]	151,365	$ 151,365	[2]	151,365	155,213	[2]
Gain (Loss) on Investments [Abstract]
Net realized gains (losses) during the period		(177)		1,359	(5,598)		5,118
Net unrealized gains (losses) during the period on investments still held at the end of the period		3,456		3,113	(5,833)		15,092
Gain (loss) from investments—net	[3]	$ 3,279		$ 4,472	$ (11,431)		$ 20,210
Fair Value, Measurements, Recurring
Trading Securities and Other Trading Assets [Line Items]
Equity investments at fair value								$ 89,872
Minimum [Member]
Gain (Loss) on Investments [Abstract]
Investments, Held-to-maturity, Fair Value, Original Maturity Period					3 months
Maximum [Member]
Gain (Loss) on Investments [Abstract]
Investments, Held-to-maturity, Fair Value, Original Maturity Period					24 months
[1]	Held-to-maturity investments had a fair value of approximately $50.1 million and $50.0 million at September 30, 2020 and December 31, 2019, respectively. These securities would be classified as level 2 within the fair value hierarchy if carried at fair value. Original maturities ranged from 3 to 24 months at September 30, 2020 and December 31, 2019.
[2]	Asset and liability amounts in parentheses represent the aggregated balances at September 30, 2020 and December 31, 2019 attributable to variable interest entities consolidated by the Company. Refer to Note 4 for further discussion.
[3]	Included net income (loss) attributable to redeemable noncontrolling interests.

Investments Variable Interest E

Investments Variable Interest Entity (Details) - USD ($) $ in Thousands		Sep. 30, 2020		Dec. 31, 2019		Sep. 30, 2019
Variable Interest Entity [Line Items]
Investments		$ 151,365	[1]	$ 155,213	[1]	$ 151,365
Other Assets	[1]	8,594		7,433
Total assets		397,466		402,419
Due to brokers	[1]	293		366
Other liabilities and accrued expenses	[1]	11,553		13,972
Total liabilities		116,292		135,304
GLI SICAV
Variable Interest Entity [Line Items]
Investments		6,585		7,048
Due from broker		3		264
Other Assets		109		92
Total assets		6,697		7,404
Due to brokers		0		45
Other liabilities and accrued expenses		42		100
Total liabilities		42		145
GRP-CIP
Variable Interest Entity [Line Items]
Investments		277		337
Due from broker		64		203
Other Assets		0		0
Total assets		341		540
Due to brokers		0		0
Other liabilities and accrued expenses		5		5
Total liabilities		5		5
SICAV GRE
Variable Interest Entity [Line Items]
Investments		34,924		45,468
Due from broker		71		663
Other Assets		806		681
Total assets		35,801		46,812
Due to brokers		35		92
Other liabilities and accrued expenses		207		466
Total liabilities		242		558
SICAV RAP
Variable Interest Entity [Line Items]
Investments		30,155		29,976
Due from broker		25		613
Other Assets		332		268
Total assets		30,512		30,857
Due to brokers		41		229
Other liabilities and accrued expenses		74		213
Total liabilities		115		442
GLI SICAV, GRP-CIP, SICAV GRE and SICAV RAP
Variable Interest Entity [Line Items]
Investments		71,941		82,829
Due from broker		163		1,743
Other Assets		1,247		1,041
Total assets		73,351		85,613
Due to brokers		76		366
Other liabilities and accrued expenses		328		784
Total liabilities		$ 404		$ 1,150
[1]	Asset and liability amounts in parentheses represent the aggregated balances at September 30, 2020 and December 31, 2019 attributable to variable interest entities consolidated by the Company. Refer to Note 4 for further discussion.

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019		Sep. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading		$ 14,980		$ 17,406
Held-to-maturity		49,807	[1]	49,976
Equity investments at fair value		89,872		83,492
Equity method investments		554		$ 491
Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Held-to-maturity, Fair Value, Original Maturity Period	24 months
Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Held-to-maturity, Fair Value, Original Maturity Period	3 months
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 82,751	85,889
Equity investments at fair value		89,872
Total investments	151,365	155,213
Derivative - assets	709	644
Derivative - liabilities	616	556
Fair Value, Measurements, Recurring | Futures - commodities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets	663	570
Derivative - liabilities	283	339
Fair Value, Measurements, Recurring | Total return swaps - commodities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets	37
Derivative - liabilities		173
Fair Value, Measurements, Recurring | Forward contracts - foreign exchange [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets	9	74
Derivative - liabilities	288	44
Fair Value, Measurements, Recurring | Equity Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets	45
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	82,751	85,889
Equity investments at fair value	83,086	89,292
Total investments	83,086	89,292
Derivative - assets	663	570
Derivative - liabilities	283	339
Fair Value, Measurements, Recurring | Level 1 | Futures - commodities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets	663	570
Derivative - liabilities	283	339
Fair Value, Measurements, Recurring | Level 1 | Forward contracts - foreign exchange [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets	0
Derivative - liabilities	0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	12	108
Total investments	17,418	15,088
Derivative - assets	46	74
Derivative - liabilities	333	217
Fair Value, Measurements, Recurring | Level 2 | Futures - commodities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - liabilities	0
Fair Value, Measurements, Recurring | Level 2 | Total return swaps - commodities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets	37
Derivative - liabilities		173
Fair Value, Measurements, Recurring | Level 2 | Forward contracts - foreign exchange [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets	9	74
Derivative - liabilities	288	44
Fair Value, Measurements, Recurring | Level 2 | Equity Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets	45
Fair Value, Measurements, Recurring | Investments Measured at NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	394	472
Total investments	885	1,026
Preferred Stock [Member] | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	841	812
Preferred Stock [Member] | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	829	704
Preferred Stock [Member] | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	12	108
Preferred Stock [Member] | Fair Value, Measurements, Recurring | Investments Measured at NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	0
Limited partnership interests | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	896	1,385
Limited partnership interests | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	619	1,048
Limited partnership interests | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	0
Limited partnership interests | Fair Value, Measurements, Recurring | Investments Measured at NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	277	337
Fixed income | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading		14,980
Total investments	49,976	49,807
Fixed income | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading	0
Fixed income | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading	17,406	14,980
Fixed income | Fair Value, Measurements, Recurring | Investments Measured at NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading	0	0
Common stocks | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	81,505	87,408
Common stocks | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	81,505	87,408
Common stocks | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	0
Common stocks | Fair Value, Measurements, Recurring | Investments Measured at NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	0
Other | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	117	135
Other | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	0
Other | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	0
Other | Fair Value, Measurements, Recurring | Investments Measured at NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	117	135
Company-sponsored funds | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	133	132
Company-sponsored funds | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	133	132
Company-sponsored funds | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	0
Company-sponsored funds | Fair Value, Measurements, Recurring | Investments Measured at NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments at fair value	0
Held-to-maturity investments | Fixed income | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity	$ 49,976	$ 49,807
Equity Method Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Method Investment, Ownership Percentage	0.20%	0.70%
Equity Method Investments | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investments		$ 554
Equity Method Investments | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investments	$ 0
Equity Method Investments | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investments	0	0
Equity Method Investments | Fair Value, Measurements, Recurring | Investments Measured at NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investments	$ 491	$ 554
[1]	Held-to-maturity investments had a fair value of approximately $50.1 million and $50.0 million at September 30, 2020 and December 31, 2019, respectively. These securities would be classified as level 2 within the fair value hierarchy if carried at fair value. Original maturities ranged from 3 to 24 months at September 30, 2020 and December 31, 2019.

Derivatives (Details)

Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Derivative [Line Items]
Notional Amount, long	$ 12,675		$ 12,675		$ 14,394
Notional Amount, Short	46,453		46,453		24,319
Derivative Assets, Fair Value	709		709		644
Derivative Liabilities, Fair Value	616		616		556
Derivative, Gains (Losses) on derivative, net	(255)	$ 173	(251)	$ 532
Forward contracts - foreign exchange
Derivative [Line Items]
Notional Amount, long	0		0		0
Notional Amount, Short	16,842		16,842		10,787
Derivative Assets, Fair Value	9		9		74
Derivative Liabilities, Fair Value	288		288		44
Derivative, Gains (Losses) on derivative, net	(242)	198	(309)	162
Futures - commodities
Derivative [Line Items]
Notional Amount, long	12,675		12,675		14,394
Notional Amount, Short	3,769		3,769		4,623
Derivative Assets, Fair Value	663		663		570
Derivative Liabilities, Fair Value	283		283		339
Derivative, Gains (Losses) on derivative, net	740	(236)	(949)	505
Total return swaps - commodities
Derivative [Line Items]
Notional Amount, long	0		0		0
Notional Amount, Short	8,578		8,578		8,909
Derivative Assets, Fair Value	37		37		0
Derivative Liabilities, Fair Value	0		0		173
Derivative, Gains (Losses) on derivative, net	(708)	211	1,052	(135)
Equity Swap
Derivative [Line Items]
Notional Amount, long	0		0
Notional Amount, Short	17,264		17,264
Derivative Assets, Fair Value	0		0
Derivative Liabilities, Fair Value	45		45
Derivative, Gains (Losses) on derivative, net	(45)	$ 0	(45)	$ 0
Cash | Interest Rate Swap
Derivative [Line Items]
Trading investments and pledged as collateral	2,180		2,180
Investments | Interest Rate Swap
Derivative [Line Items]
Trading investments and pledged as collateral	$ 1,546		$ 1,546		$ 1,713

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Net income	$ 34,006	$ 36,398	$ 74,236	$ 109,024
Less: Net (income) loss attributable to redeemable noncontrolling interests	(2,102)	(2,381)	6,760	(11,131)
Net income attributable to common stockholders	$ 31,904	$ 34,017	$ 80,996	$ 97,893
Basic weighted average shares outstanding (shares)	47,855,000	47,316,000	47,778,000	47,256,000
Dilutive potential shares from restricted stock units (shares)	826,000	1,096,000	810,000	862,000
Diluted weighted average shares outstanding (shares)	48,681,000	48,412,000	48,588,000	48,118,000
Basic earnings per share attributable to common stockholders (in dollars per share)	$ 0.67	$ 0.72	$ 1.70	$ 2.07
Diluted earnings per share attributable to common stockholders (in dollars per share)	$ 0.66	$ 0.70	$ 1.67	$ 2.03
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%	21.00%
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	16,000	0	0	0

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Contingency [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%	21.00%
U.S. Federal, State, Local and Foreign Taxes
Income Tax Contingency [Line Items]
Effective income tax rate reconciliation, percent	28.20%	23.30%	22.90%	23.90%

Regulatory Requirements (Detail

Regulatory Requirements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financial Instruments Owned and Pledged as Collateral [Line Items]
Dividends	$ 19,138	$ 17,665	$ 57,178	$ 52,989
Securities Registered Domestically
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net Capital	2,800		2,800
Excess Capital	2,600		2,600
Securities Regulated By Foreign Entities - Asia
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net Capital	3,500		3,500
Excess Capital	3,100		3,100
Dividends			12,900
Securities Regulated By Foreign Entities - UK
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net Capital	27,400		27,400
Excess Capital	$ 22,700		22,700
Dividends			$ 14,800

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Related Party Transactions, Revenue [Abstract]
Total revenue	$ 111,159	$ 104,965	$ 311,076	$ 300,983
Distribution and service fees
Related Party Transactions, Revenue [Abstract]
Total revenue	7,572	7,681	22,285	22,072
Affiliated Funds
Related Party Transactions, Revenue [Abstract]
Investment advisory and administrative fees	69,124	68,224	198,501	193,329
Distribution and service fees	7,572	7,681	22,285	22,072
Total	76,696	75,905	220,786	215,401
Related Party Transaction, Expenses from Transactions with Related Party	3,300	3,200	9,400	7,900
Proceeds from sales	0	0	7	26,506
Gross realized gains	0	0	0	32
Gross realized losses	0	0	0	(907)
Dividend income	1	$ 1	3	$ 31
Receivables due from company-sponsored mutual funds	25,670		25,670		$ 26,701
Payables due to company-sponsored mutual funds	$ 447		$ 447		$ 474

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Commitments
Contingencies [Line Items]
Long-term purchase commitment, time period	12 years
Commitment to invest
Contingencies [Line Items]
Long-term purchase commitment	$ 5.1
Long-term committment, funded amount	$ 3.8

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Nov. 05, 2020	Oct. 27, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Subsequent Event [Line Items]
Dividends declared per share (in dollars per share)			$ 0.39	$ 0.36	$ 1.17	$ 1.08
Subsequent Event | Common stocks | Cohen & Steer Tax-Advantaged Preferred Securities and Income Fund [Member]
Subsequent Event [Line Items]
Proceeds from issuance of preferred stock		$ 1,300
Shares available for future issuance, underwriters option (in shares)		7.5
Share price (in dollars per share)		$ 25
Initial offering expense		$ 57
Dividend Declared | Subsequent Event | Common stocks
Subsequent Event [Line Items]
Dividends declared per share (in dollars per share)	$ 0.39
Special Cash Dividend Declared [Member] | Subsequent Event | Common stocks
Subsequent Event [Line Items]
Dividends declared per share (in dollars per share)	$ 1

Uncategorized Items - cns-20200

Label	Element	Value
Cohen & Steers SICAV Global Preferred Securities Fund [Member]
Noncontrolling Interest, Decrease from Deconsolidation	us-gaap_NoncontrollingInterestDecreaseFromDeconsolidation	$ 7,181,000