Cohen & Steers (CNS) 10-Q 7 Aug 20 2020 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Aug. 03, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 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		47,777,375
Entity Central Index Key	0001284812
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false

Condensed Consolidated Statemen

Condensed Consolidated Statements of Financial Condition (Unaudited) - USD ($) $ in Thousands		Jun. 30, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents		$ 88,135	$ 101,352
Investments ($68,255 and $82,829)	[1]	147,538	155,213
Accounts receivable		51,995	59,101
Due from brokers ($497 and $1,743)	[1]	497	1,743
Property and equipment—net		11,584	12,486
Operating lease right-of-use assets		33,395	38,440
Goodwill and intangible assets—net		19,567	19,560
Deferred income tax asset—net		6,902	7,091
Other assets ($1,451 and $1,041)	[1]	8,675	7,433
Total assets		368,288	402,419
Liabilities:
Accrued compensation		22,045	48,105
Distribution and service fees payable		7,477	7,318
Operating lease liabilities		37,716	43,349
Income tax payable		33,629	22,194
Due to brokers ($62 and $366)	[1]	62	366
Other liabilities and accrued expenses ($621 and $784)	[1]	10,743	13,972
Total liabilities		111,672	135,304
Commitments and contingencies
Redeemable noncontrolling interests		43,073	53,412
Stockholders’ equity:
Common stock, $0.01 par value; 500,000,000 shares authorized; 53,447,883 and 52,580,246 shares issued at June 30, 2020 and December 31, 2019, respectively		535	527
Additional paid-in capital		652,579	636,788
Accumulated deficit		(231,409)	(242,461)
Accumulated other comprehensive loss, net of tax		(7,422)	(6,326)
Less: Treasury stock, at cost, 5,674,168 and 5,329,820 shares at June 30, 2020 and December 31, 2019, respectively		(200,740)	(174,825)
Total stockholders’ equity		213,543	213,703
Total liabilities and stockholders’ equity		$ 368,288	$ 402,419
[1]	Asset and liability amounts in parentheses represent the aggregated balances at June 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		Jun. 30, 2020	Dec. 31, 2019
Investments ($68,255 and $82,829)	[1]	$ 147,538	$ 155,213
Other Assets	[1]	8,675	7,433
Due to brokers ($62 and $366)	[1]	62	366
Other liabilities and accrued expenses	[1]	$ 10,743	$ 13,972
Common stock, par value		$ 0.01	$ 0.01
Common stock, shares authorized		500,000,000	500,000,000
Common stock, shares issued		53,447,883	52,580,246
Treasury stock, shares		5,674,168	5,329,820
GLI SICAV, GRP-CIP, SICAV GRE and SICAV RAP
Investments ($68,255 and $82,829)		$ 68,255	$ 82,829
Due from broker		497	1,743
Other Assets		1,451	1,041
Due to brokers ($62 and $366)		62	366
Other liabilities and accrued expenses		$ 621	$ 784
[1]	Asset and liability amounts in parentheses represent the aggregated balances at June 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			6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019		Jun. 30, 2020	Jun. 30, 2019
Revenue:
Total revenue		$ 94,087	$ 101,792		$ 199,917	$ 196,018
Expenses:
Employee compensation and benefits		34,320	36,846		72,937	70,561
Distribution and service fees		12,518	14,188		26,622	26,724
General and administrative		10,726	11,539		34,314	22,977
Depreciation and amortization		1,228	1,115		2,380	2,217
Total expenses		58,792	63,688		136,253	122,479
Operating income		35,295	38,104		63,664	73,539
Non-operating income:
Interest and dividend income—net		893	1,920		2,042	3,461
Gain (loss) from investments—net	[1]	7,317	1,874		(14,710)	15,738
Foreign currency gain (loss)—net		(257)	742		778	247
Total non-operating income (loss)		7,953	4,536		(11,890)	19,446
Income before provision for income taxes		43,248	42,640		51,774	92,985
Provision for income taxes		11,086	9,991		11,544	20,359
Net income		32,162	32,649		40,230	72,626
Less: Net (income) loss attributable to redeemable noncontrolling interests		(3,642)	(1,316)		8,862	(8,750)
Net income attributable to common stockholders		$ 28,520	$ 31,333		$ 49,092	$ 63,876
Earnings per share attributable to common stockholders:
Basic (in dollars per share)		$ 0.60	$ 0.66		$ 1.03	$ 1.35
Diluted (in dollars per share)		0.59	0.65		1.01	1.33
Dividends declared per share (in dollars per share)		$ 0.39	$ 0.36		$ 0.78	$ 0.72
Weighted average shares outstanding:
Basic (shares)		47,826	47,304		47,739	47,226
Diluted (shares)		48,572	48,175		48,549	47,942
Investments ($68,255 and $82,829)	[2]	$ 147,538			$ 147,538
GLI SICAV, GRP-CIP, SICAV GRE and SICAV RAP
Weighted average shares outstanding:
Investments ($68,255 and $82,829)		68,255			68,255
Investment advisory and administration fees
Revenue:
Total revenue		86,648	$ 93,854	[3]	183,937	$ 180,658
Distribution and service fees
Revenue:
Total revenue		6,930	7,418		14,713	14,391
Other
Revenue:
Total revenue		$ 509	$ 520	[3]	$ 1,267	$ 969
[1]	Included net income (loss) attributable to redeemable noncontrolling interests.
[2]	Asset and liability amounts in parentheses represent the aggregated balances at June 30, 2020 and December 31, 2019 attributable to variable interest entities consolidated by the Company. Refer to Note 4 for further discussion.
[3]	(1) Revenue amounts related to model-based portfolios were reclassified from other (previously reported as portfolio consulting and other) to investment advisory and administration fees.

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 32,162	$ 32,649	$ 40,230	$ 72,626
Less: Net (income) loss attributable to redeemable noncontrolling interests	(3,642)	(1,316)	8,862	(8,750)
Net income attributable to common stockholders	28,520	31,333	49,092	63,876
Foreign currency translation income (loss)	404	(298)	(1,096)	100
Total comprehensive income attributable to common stockholders	$ 28,924	$ 31,035	$ 47,996	$ 63,976

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	(35,324)			(35,324)
Issuance of common stock	542	8	534
Repurchase of common stock	(10,385)						(10,385)
Issuance of restricted stock units	1,583		1,583
Amortization of restricted stock units	13,345		13,345
Forfeitures of restricted stock units	(8)		(8)
Net Income (Loss) Attributable to Parent	63,876			63,876
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest						8,750
Other comprehensive income (loss), net of tax	100				100
Net contributions (distributions) attributable to redeemable noncontrolling interests						(16,634)
Net consolidation (deconsolidation) of Company-sponsored funds						(68,204)
Ending balance at Jun. 30, 2019	$ 256,375	526	617,726	(179,852)	(7,223)		(174,802)
Ending balance (redeemable noncontrolling interest) at Jun. 30, 2019						38,104
Dividends declared per share (in dollars per share)	$ 0.72
Beginning balance at Mar. 31, 2019	$ 235,161	525	609,854	(193,523)	(6,925)		(174,770)
Beginning balance (redeemable noncontrolling interest) at Mar. 31, 2019						64,354
Dividends	(17,662)			(17,662)
Issuance of common stock	220	1	219
Repurchase of common stock	(32)						(32)
Issuance of restricted stock units	786		786
Amortization of restricted stock units	6,875		6,875
Forfeitures of restricted stock units	(8)		(8)
Net Income (Loss) Attributable to Parent	31,333			31,333
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest						1,316
Other comprehensive income (loss), net of tax	(298)				(298)
Net contributions (distributions) attributable to redeemable noncontrolling interests						(27,566)
Ending balance at Jun. 30, 2019	$ 256,375	526	617,726	(179,852)	(7,223)		(174,802)
Ending balance (redeemable noncontrolling interest) at Jun. 30, 2019						38,104
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	(38,040)			(38,040)
Issuance of common stock	610	8	602
Repurchase of common stock	(25,915)						(25,915)
Issuance of restricted stock units	1,069		1,069
Amortization of restricted stock units	14,151		14,151
Forfeitures of restricted stock units	(31)		(31)
Net Income (Loss) Attributable to Parent	49,092			49,092
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest						(8,862)
Other comprehensive income (loss), net of tax	(1,096)				(1,096)
Net contributions (distributions) attributable to redeemable noncontrolling interests						(1,477)
Ending balance at Jun. 30, 2020	$ 213,543	535	652,579	(231,409)	(7,422)		(200,740)
Ending balance (redeemable noncontrolling interest) at Jun. 30, 2020						43,073
Dividends declared per share (in dollars per share)	$ 0.78
Beginning balance at Mar. 31, 2020	$ 195,504	535	644,397	(240,930)	(7,826)		(200,672)
Beginning balance (redeemable noncontrolling interest) at Mar. 31, 2020						41,601
Dividends	(18,999)			(18,999)
Issuance of common stock	305	0	305
Repurchase of common stock	(68)						(68)
Issuance of restricted stock units	516		516
Amortization of restricted stock units	7,376		7,376
Forfeitures of restricted stock units	(15)		(15)
Net Income (Loss) Attributable to Parent	28,520			28,520
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest						3,642
Other comprehensive income (loss), net of tax	404				404
Net contributions (distributions) attributable to redeemable noncontrolling interests						(2,170)
Ending balance at Jun. 30, 2020	$ 213,543	$ 535	$ 652,579	$ (231,409)	$ (7,422)		$ (200,740)
Ending balance (redeemable noncontrolling interest) at Jun. 30, 2020						$ 43,073
Dividends declared per share (in dollars per share)	$ 0.39

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income		$ 40,230,000	$ 72,626,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Stock-based compensation expense		14,561,000	13,766,000
Amortization of deferred commissions		885,000	469,000
Depreciation and amortization		2,380,000	2,217,000
Amortization of right-of-use assets		5,045,000	5,056,000
Amortization (accretion) of premium (discount) on held-to-maturity investments		(168,000)	(301,000)
(Gain) loss from investments—net	[1]	14,710,000	(15,738,000)
Deferred income taxes		222,000	34,000
Foreign currency (gain) losses		(245,000)	(158,000)
Changes in operating assets and liabilities:
Accounts receivable		7,351,000	(3,823,000)
Due from brokers		1,246,000	49,000
Deferred commissions		(742,000)	(624,000)
Investments within consolidated funds		568,000	1,828,000
Other assets		(6,549,000)	136,000
Accrued compensation		(26,060,000)	(20,158,000)
Distribution and service fees payable		159,000	(1,690,000)
Operating lease liabilities		(5,633,000)	(5,459,000)
Due to brokers		(304,000)	1,680,000
Income tax payable		11,435,000	(22,000)
Other liabilities and accrued expenses		(3,490,000)	(3,981,000)
Net cash provided by (used in) operating activities		55,601,000	45,907,000
Cash flows from investing activities:
Purchases to investments		8,755,000	18,727,000
Proceeds from sales of investments		6,735,000	44,010,000
Purchases of property and equipment		(1,564,000)	(1,583,000)
Proceeds from sales of property and equipment		73,000	0
Net cash provided by (used in) investing activities		(3,511,000)	23,700,000
Cash flows from financing activities:
Issuance of common stock		518,000	413,000
Repurchase of common stock		(25,915,000)	(10,385,000)
Dividends to stockholders		(37,310,000)	(34,041,000)
Distributions to redeemable noncontrolling interest		(5,322,000)	(32,026,000)
Contributions from redeemable noncontrolling interests		3,845,000	15,392,000
Net cash provided by (used in) financing activities		(64,184,000)	(60,647,000)
Net increase (decrease) in cash and cash equivalents		(12,094,000)	8,960,000
Effect of foreign exchange rate changes on cash and cash equivalents		(1,123,000)	416,000
Cash and cash equivalents, beginning of the period		101,352,000	92,733,000
Cash and cash equivalents, end of the period		88,135,000	102,109,000
Supplemental Cash Flow Information [Abstract]
Income taxes paid		2,492,000	20,699,000
Proceeds from Income tax refunds		2,654,000	352,000
Deferred income tax expense		9,345,000
Restricted stock unit dividend equivalents, net of forfeitures		730,000	$ 1,283,000
SICAV Preferred
Supplemental Cash Flow Information [Abstract]
Net consolidation (deconsolidation) of Company-sponsored funds		114,192,000
SICAV GRE
Supplemental Cash Flow Information [Abstract]
Noncontrolling interest, period increase (decrease)		$ 45,988,000
[1]	Included net income (loss) attributable to redeemable noncontrolling interests.

Organization and Description of

Organization and Description of Business	6 Months Ended
	Jun. 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	6 Months Ended
	Jun. 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 can not 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, liquidity or prospects 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. Reclassifications— The Company reclassified certain prior period amounts in the condensed consolidated financial statements to conform with the current period presentation. Prior period revenue amounts related to model-based portfolios were reclassified from other (previously reported as portfolio consulting and other) to investment advisory and administration fees. 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 —Company-sponsored funds that are consolidated 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 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 June 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 fixed income 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 six months ended June 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 in the Company-sponsored fund 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 the Company-sponsored fund's 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 to gain exposure to the underlying commodities markets or to hedge market and credit risks of the underlying portfolios, including options, futures and swaps contracts. 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 foreign exchange contracts to 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. Operating 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 therefore excluded from the transaction price 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 may be 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 ($7,422,000) and ($6,326,000) at June 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	6 Months Ended
	Jun. 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 Six Months Ended (in thousands) 2020 2019 2020 2019 Client domicile: North America $ 81,407 $ 87,267 $ 172,414 $ 167,710 Japan 7,486 8,387 15,902 16,618 Asia Pacific excluding Japan 2,536 2,554 5,608 5,706 Europe, Middle East and Africa 2,658 3,584 5,993 5,984 Total $ 94,087 $ 101,792 $ 199,917 $ 196,018 Three Months Ended Six Months Ended (in thousands) 2020 2019 2020 2019 Investment vehicle: Open-end funds (1) $ 51,566 $ 53,860 $ 109,157 $ 102,460 Closed-end funds 17,512 20,002 37,134 39,054 Institutional accounts 24,500 27,410 52,359 53,535 Other (2) 509 520 1,267 969 Total $ 94,087 $ 101,792 $ 199,917 $ 196,018 ________________________ (1) Included distribution and service fees of $6.9 million and $7.4 million for the three months ended June 30, 2020 and 2019, respectively, and $14.7 million and $14.4 million for the six months ended June 30, 2020 and 2019, respectively. (2) Prior period amounts related to model-based portfolios were reclassified from other (previously reported as portfolio consulting and other) to open-end funds and institutional accounts.

Investments

Investments	6 Months Ended
	Jun. 30, 2020
Investments [Abstract]
Investments	Investments The following table summarizes the Company's investments: (in thousands) June 30, December 31, Equity investments at fair value $ 79,834 $ 89,872 Trading 17,278 14,980 Held-to-maturity carried at amortized cost (1) 49,975 49,807 Equity method 451 554 Total investments $ 147,538 $ 155,213 _________________________ (1) Held-to-maturity investments had a fair value of approximately $50.2 million and $50.0 million at June 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 12 to 24 months at June 30, 2020 and December 31, 2019. The Company seeded one new fund during the six months ended June 30, 2019. The following table summarizes gain (loss)—net from investments: Three Months Ended Six Months Ended (in thousands) 2020 2019 2020 2019 Net realized gains (losses) during the period $ (4,191) $ 4,526 $ (5,421) $ 3,759 Net unrealized gains (losses) during the period on investments still held at the end of the period 11,508 (2,652) (9,289) 11,979 Gain (loss) from investments—net (1) $ 7,317 $ 1,874 $ (14,710) $ 15,738 ________________________ (1) Included net income (loss) attributable to redeemable noncontrolling interests. At June 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: June 30, 2020 (in thousands) GLI SICAV GRP-CIP SICAV GRE SICAV RAP Total Assets (1) Investments $ 6,474 $ 271 $ 33,039 $ 28,471 $ 68,255 Due from brokers — 69 361 67 497 Other assets 165 — 861 425 1,451 Total assets $ 6,639 $ 340 $ 34,261 $ 28,963 $ 70,203 Liabilities (1) Due to brokers $ — $ — $ — $ 62 $ 62 Other liabilities and accrued expenses 110 5 307 199 621 Total liabilities $ 110 $ 5 $ 307 $ 261 $ 683 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	6 Months Ended
	Jun. 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. In determining the appropriate levels, the Company performed a detailed analysis of the assets and liabilities that are subject to ASC 820. The following tables present fair value measurements: June 30, 2020 (in thousands) Level 1 Level 2 Level 3 Investments Investments Total Cash equivalents $ 73,897 $ — $ — $ — $ — $ 73,897 Equity investments at fair value Common stocks $ 77,672 $ — $ — $ — $ — $ 77,672 Company-sponsored funds 125 — — — — 125 Limited partnership interests 756 — — 271 — 1,027 Preferred securities 839 56 — — — 895 Other — — — 115 — 115 Total $ 79,392 $ 56 $ — $ 386 $ — $ 79,834 Trading investments Fixed income $ 83 $ 17,195 $ — $ — $ — $ 17,278 Held-to-maturity investments $ — $ — $ — $ — $ 49,975 $ 49,975 Equity method investments $ — $ — $ — $ 451 $ — $ 451 Total investments $ 79,475 $ 17,251 $ — $ 837 $ 49,975 $ 147,538 Derivatives - assets Commodity futures $ 341 $ — $ — $ — $ — $ 341 Foreign exchange — 58 — — — 58 Total $ 341 $ 58 $ — $ — $ — $ 399 Derivatives - liabilities Commodity futures $ 237 $ — $ — $ — $ — $ 237 Commodity swaps — 49 — — — 49 Foreign exchange — 95 — — — 95 Total $ 237 $ 144 $ — $ — $ — $ 381 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 Commodity futures $ 570 $ — $ — $ — $ — $ 570 Foreign exchange — 74 — — — 74 Total $ 570 $ 74 $ — $ — $ — $ 644 Derivatives - liabilities Commodity futures $ 339 $ — $ — $ — $ — $ 339 Commodity swaps — 173 — — — 173 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 - includes 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 June 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 - includes 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 June 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 1.0% 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 12 to 24 months at June 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. Commodity swap contracts classified as level 2 were valued based on the underlying futures contracts. 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 involves a significant degree of judgment, taking into consideration a combination of internal and external factors. Such investments are valued on a quarterly basis, taking into consideration any changes in key inputs and changes in economic and other relevant conditions, and valuation models are updated accordingly. The valuation process also includes a review by the Company's valuation committee which is comprised of senior members from various departments within the Company, including investment management. The valuation committee provides independent oversight of the valuation policies and procedures.

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Derivatives The following tables summarize the notional amount and fair value of the derivative financial instruments that are not designated in a formal hedging relationship: As of June 30, 2020 Notional Amount Fair Value (1) (in thousands) Long Short Assets Liabilities Commodity futures $ 11,246 $ 3,168 $ 341 $ 237 Commodity swaps — 7,784 — 49 Foreign exchange — 9,091 58 95 $ 11,246 $ 20,043 $ 399 $ 381 As of December 31, 2019 Notional Amount Fair Value (1) (in thousands) Long Short Assets Liabilities Commodity futures $ 14,394 $ 4,623 $ 570 $ 339 Commodity swaps — 8,909 — 173 Foreign exchange — 10,787 74 44 $ 14,394 $ 24,319 $ 644 $ 556 ________________________ (1) The fair value of the derivative financial instruments is recorded in other assets and other liabilities and accrued expenses on the Company's condensed consolidated statements of financial condition. The Company's exposure to commodity futures is limited to certain seed investments. Commodity swap contracts are utilized to economically hedge and reduce the overall risk of the Company's market exposure to these investments. The Company enters into foreign exchange contracts to sell currency to economically hedge exposure arising from certain non-U.S. dollar investment advisory fees. Investments of approximately $1,675,000 and $1,713,000 on the condensed consolidated statements of financial condition at June 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 Six Months Ended (in thousands) 2020 2019 2020 2019 Commodity futures $ 412 $ (155) $ (1,689) $ 741 Commodity swaps (381) 395 1,760 (346) Foreign exchange (164) (228) (67) (36) Total (1) $ (133) $ 12 $ 4 $ 359 ________________________ (1) Gains and losses on the 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	6 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per ShareBasic 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 using the treasury stock method by dividing net income attributable to common stockholders by the total weighted average shares of common stock outstanding and common stock equivalents. Common stock equivalents are comprised of dilutive potential shares from restricted stock unit awards and are excluded from the computation if their effect is anti-dilutive. Anti-dilutive common stock equivalents of approximately 63,000 shares were excluded from the computation for the three months ended June 30, 2020. There were no anti-dilutive common stock equivalents for either the three months ended June 30, 2019 or six months ended June 30, 2020. Anti-dilutive common stock equivalents of approximately 2,300 shares were excluded from the computation for the six months ended June 30, 2019. The following table reconciles income and share data used in the basic and diluted earnings per share computations: Three Months Ended Six Months Ended (in thousands, except per share data) 2020 2019 2020 2019 Net income $ 32,162 $ 32,649 40,230 72,626 Less: Net (income) loss attributable to redeemable noncontrolling interests (3,642) (1,316) 8,862 (8,750) Net income attributable to common stockholders $ 28,520 $ 31,333 $ 49,092 $ 63,876 Basic weighted average shares outstanding 47,826 47,304 47,739 47,226 Dilutive potential shares from restricted stock units 746 871 810 716 Diluted weighted average shares outstanding 48,572 48,175 48,549 47,942 Basic earnings per share attributable to common stockholders $ 0.60 $ 0.66 1.03 1.35 Diluted earnings per share attributable to common stockholders $ 0.59 $ 0.65 1.01 1.33

Income Taxes

Income Taxes	6 Months Ended
	Jun. 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 June 30, 2020 was approximately 28.0%, compared with approximately 24.2% for the three months ended June 30, 2019. The effective tax rate for the three months ended June 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 June 30, 2019 differed from the U.S. federal statutory rate of 21.0% primarily due to state, local and foreign taxes. The effective tax rate for the six months ended June 30, 2020 was approximately 19.0%, compared with approximately 24.2% for the six months ended June 30, 2019. The effective tax rate for the six months ended June 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 more than 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 six months ended June 30, 2019 differed from the U.S. federal statutory rate of 21.0% primarily due to state, local and foreign taxes, partially offset by 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	6 Months Ended
	Jun. 30, 2020
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Regulatory Requirements	Regulatory RequirementsCSS, 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 June 30, 2020, CSS had net capital of approximately $3.3 million, which exceeded its requirement by approximately $3.1 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 June 30, 2020, CSAL had regulatory capital of approximately $2.4 million, which exceeded its minimum regulatory capital requirement by approximately $2.0 million. During the three months ended June 30, 2020, CSAL paid dividends in the amount of approximately $12.9 million to its parent, Cohen & Steers Capital Management, Inc.CSUK is subject to regulation by the United Kingdom Financial Conduct Authority. At June 30, 2020, CSUK had regulatory capital of approximately $26.2 million, which exceeded its minimum regulatory capital requirement by approximately $21.9 million.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 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 Six Months Ended (in thousands) 2020 2019 2020 2019 Investment advisory and administration fees (1) $ 61,035 $ 65,409 $ 129,377 $ 125,105 Distribution and service fees 6,930 7,418 14,713 14,391 Total $ 67,965 $ 72,827 $ 144,090 $ 139,496 _________________________ (1) Investment advisory and administration fees are reflected net of fund reimbursements of $2.9 million and $2.4 million for the three months ended June 30, 2020 and 2019, respectively, and $6.1 million and $4.8 million for the six months ended June 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 Six Months Ended (in thousands) 2020 2019 2020 2019 Proceeds from sales $ — $ 5,399 $ 7 $ 26,506 Gross realized gains — 32 — 32 Gross realized losses — — — (907) Dividend income 1 28 2 30 Included in accounts receivable at June 30, 2020 and December 31, 2019 are receivables due from Company-sponsored funds of approximately $23,955,000 and $26,701,000, respectively. Included in accounts payable at June 30, 2020 and December 31, 2019 are payables due to Company-sponsored funds of approximately $1,079,000 and $474,000, respectively.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 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 June 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. At June 30, 2020, the unfunded commitment was not recorded on the Company's condensed consolidated statements of financial condition.

Concentration of Credit Risk

Concentration of Credit Risk	6 Months Ended
	Jun. 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	6 Months Ended
	Jun. 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 August 6, 2020, the Company declared a quarterly dividend on its common stock in the amount of $0.39 per share. The dividend will be payable on August 27, 2020 to stockholders of record at the close of business on August 17, 2020.

Basis of Presentation and Sig_2

Basis of Presentation and Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 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 can not 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, liquidity or prospects 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.
Reclassification	Reclassifications— The Company reclassified certain prior period amounts in the condensed consolidated financial statements to conform with the current period presentation. Prior period revenue amounts related to model-based portfolios were reclassified from other (previously reported as portfolio consulting and other) to investment advisory and administration fees.
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 —Company-sponsored funds that are consolidated 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 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 June 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 fixed income 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 six months ended June 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 in the Company-sponsored fund 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 the Company-sponsored fund's 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 to gain exposure to the underlying commodities markets or to hedge market and credit risks of the underlying portfolios, including options, futures and swaps contracts. 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 foreign exchange contracts to 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. Operating 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 therefore excluded from the transaction price 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 may be 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
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 ($7,422,000) and ($6,326,000) at June 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 involves a significant degree of judgment, taking into consideration a combination of internal and external factors. Such investments are valued on a quarterly basis, taking into consideration any changes in key inputs and changes in economic and other relevant conditions, and valuation models are updated accordingly. The valuation process also includes a review by the Company's valuation committee which is comprised of senior members from various departments within the Company, including investment management. The valuation committee provides independent oversight of the valuation policies and procedures.

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 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 Six Months Ended (in thousands) 2020 2019 2020 2019 Client domicile: North America $ 81,407 $ 87,267 $ 172,414 $ 167,710 Japan 7,486 8,387 15,902 16,618 Asia Pacific excluding Japan 2,536 2,554 5,608 5,706 Europe, Middle East and Africa 2,658 3,584 5,993 5,984 Total $ 94,087 $ 101,792 $ 199,917 $ 196,018 Three Months Ended Six Months Ended (in thousands) 2020 2019 2020 2019 Investment vehicle: Open-end funds (1) $ 51,566 $ 53,860 $ 109,157 $ 102,460 Closed-end funds 17,512 20,002 37,134 39,054 Institutional accounts 24,500 27,410 52,359 53,535 Other (2) 509 520 1,267 969 Total $ 94,087 $ 101,792 $ 199,917 $ 196,018 ________________________ (1) Included distribution and service fees of $6.9 million and $7.4 million for the three months ended June 30, 2020 and 2019, respectively, and $14.7 million and $14.4 million for the six months ended June 30, 2020 and 2019, respectively. (2) Prior period amounts related to model-based portfolios were reclassified from other (previously reported as portfolio consulting and other) to open-end funds and institutional accounts.

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jun. 30, 2020
Investments [Abstract]
Summary Investment Holdings	The following table summarizes the Company's investments: (in thousands) June 30, December 31, Equity investments at fair value $ 79,834 $ 89,872 Trading 17,278 14,980 Held-to-maturity carried at amortized cost (1) 49,975 49,807 Equity method 451 554 Total investments $ 147,538 $ 155,213 _________________________ (1) Held-to-maturity investments had a fair value of approximately $50.2 million and $50.0 million at June 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 12 to 24 months at June 30, 2020 and December 31, 2019.
Gain (Loss) on Investments	The following table summarizes gain (loss)—net from investments: Three Months Ended Six Months Ended (in thousands) 2020 2019 2020 2019 Net realized gains (losses) during the period $ (4,191) $ 4,526 $ (5,421) $ 3,759 Net unrealized gains (losses) during the period on investments still held at the end of the period 11,508 (2,652) (9,289) 11,979 Gain (loss) from investments—net (1) $ 7,317 $ 1,874 $ (14,710) $ 15,738 ________________________ (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: June 30, 2020 (in thousands) GLI SICAV GRP-CIP SICAV GRE SICAV RAP Total Assets (1) Investments $ 6,474 $ 271 $ 33,039 $ 28,471 $ 68,255 Due from brokers — 69 361 67 497 Other assets 165 — 861 425 1,451 Total assets $ 6,639 $ 340 $ 34,261 $ 28,963 $ 70,203 Liabilities (1) Due to brokers $ — $ — $ — $ 62 $ 62 Other liabilities and accrued expenses 110 5 307 199 621 Total liabilities $ 110 $ 5 $ 307 $ 261 $ 683 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)	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring	The following tables present fair value measurements: June 30, 2020 (in thousands) Level 1 Level 2 Level 3 Investments Investments Total Cash equivalents $ 73,897 $ — $ — $ — $ — $ 73,897 Equity investments at fair value Common stocks $ 77,672 $ — $ — $ — $ — $ 77,672 Company-sponsored funds 125 — — — — 125 Limited partnership interests 756 — — 271 — 1,027 Preferred securities 839 56 — — — 895 Other — — — 115 — 115 Total $ 79,392 $ 56 $ — $ 386 $ — $ 79,834 Trading investments Fixed income $ 83 $ 17,195 $ — $ — $ — $ 17,278 Held-to-maturity investments $ — $ — $ — $ — $ 49,975 $ 49,975 Equity method investments $ — $ — $ — $ 451 $ — $ 451 Total investments $ 79,475 $ 17,251 $ — $ 837 $ 49,975 $ 147,538 Derivatives - assets Commodity futures $ 341 $ — $ — $ — $ — $ 341 Foreign exchange — 58 — — — 58 Total $ 341 $ 58 $ — $ — $ — $ 399 Derivatives - liabilities Commodity futures $ 237 $ — $ — $ — $ — $ 237 Commodity swaps — 49 — — — 49 Foreign exchange — 95 — — — 95 Total $ 237 $ 144 $ — $ — $ — $ 381 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 Commodity futures $ 570 $ — $ — $ — $ — $ 570 Foreign exchange — 74 — — — 74 Total $ 570 $ 74 $ — $ — $ — $ 644 Derivatives - liabilities Commodity futures $ 339 $ — $ — $ — $ — $ 339 Commodity swaps — 173 — — — 173 Foreign exchange — 44 — — — 44 Total $ 339 $ 217 $ — $ — $ — $ 556

Derivatives (Tables)

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The following tables summarize the notional amount and fair value of the derivative financial instruments that are not designated in a formal hedging relationship: As of June 30, 2020 Notional Amount Fair Value (1) (in thousands) Long Short Assets Liabilities Commodity futures $ 11,246 $ 3,168 $ 341 $ 237 Commodity swaps — 7,784 — 49 Foreign exchange — 9,091 58 95 $ 11,246 $ 20,043 $ 399 $ 381 As of December 31, 2019 Notional Amount Fair Value (1) (in thousands) Long Short Assets Liabilities Commodity futures $ 14,394 $ 4,623 $ 570 $ 339 Commodity swaps — 8,909 — 173 Foreign exchange — 10,787 74 44 $ 14,394 $ 24,319 $ 644 $ 556 ________________________ (1) The fair value of the 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 Six Months Ended (in thousands) 2020 2019 2020 2019 Commodity futures $ 412 $ (155) $ (1,689) $ 741 Commodity swaps (381) 395 1,760 (346) Foreign exchange (164) (228) (67) (36) Total (1) $ (133) $ 12 $ 4 $ 359 ________________________ (1) Gains and losses on the 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)	6 Months Ended
	Jun. 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 Six Months Ended (in thousands, except per share data) 2020 2019 2020 2019 Net income $ 32,162 $ 32,649 40,230 72,626 Less: Net (income) loss attributable to redeemable noncontrolling interests (3,642) (1,316) 8,862 (8,750) Net income attributable to common stockholders $ 28,520 $ 31,333 $ 49,092 $ 63,876 Basic weighted average shares outstanding 47,826 47,304 47,739 47,226 Dilutive potential shares from restricted stock units 746 871 810 716 Diluted weighted average shares outstanding 48,572 48,175 48,549 47,942 Basic earnings per share attributable to common stockholders $ 0.60 $ 0.66 1.03 1.35 Diluted earnings per share attributable to common stockholders $ 0.59 $ 0.65 1.01 1.33

Related Party Transactions (Tab

Related Party Transactions (Tables)	6 Months Ended
	Jun. 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 Six Months Ended (in thousands) 2020 2019 2020 2019 Investment advisory and administration fees (1) $ 61,035 $ 65,409 $ 129,377 $ 125,105 Distribution and service fees 6,930 7,418 14,713 14,391 Total $ 67,965 $ 72,827 $ 144,090 $ 139,496 _________________________ (1) Investment advisory and administration fees are reflected net of fund reimbursements of $2.9 million and $2.4 million for the three months ended June 30, 2020 and 2019, respectively, and $6.1 million and $4.8 million for the six months ended June 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 Six Months Ended (in thousands) 2020 2019 2020 2019 Proceeds from sales $ — $ 5,399 $ 7 $ 26,506 Gross realized gains — 32 — 32 Gross realized losses — — — (907) Dividend income 1 28 2 30

Basis of Presentation and Sig_3

Basis of Presentation and Significant Accounting Policies - Narrative (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ (7,422,000)	$ (6,326,000)

Revenue (Details)

Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Total revenue		$ 94,087	$ 101,792	$ 199,917	$ 196,018
North America
Disaggregation of Revenue [Line Items]
Total revenue		81,407	87,267	172,414	167,710
Japan
Disaggregation of Revenue [Line Items]
Total revenue		7,486	8,387	15,902	16,618
Asia, excluding Japan
Disaggregation of Revenue [Line Items]
Total revenue		2,536	2,554	5,608	5,706
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenue		2,658	3,584	5,993	5,984
Distribution and service fees
Disaggregation of Revenue [Line Items]
Total revenue		6,930	7,418	14,713	14,391
Open-end funds
Disaggregation of Revenue [Line Items]
Total revenue	[1]	51,566	53,860	109,157	102,460
Closed-end funds
Disaggregation of Revenue [Line Items]
Total revenue		17,512	20,002	37,134	39,054
Institutional accounts
Disaggregation of Revenue [Line Items]
Total revenue		24,500	27,410	52,359	53,535
Other
Disaggregation of Revenue [Line Items]
Total revenue	[2]	$ 509	$ 520	$ 1,267	$ 969
[1]	Included distribution and service fees of $6.9 million and $7.4 million for the three months ended June 30, 2020 and 2019, respectively, and $14.7 million and $14.4 million for the six months ended June 30, 2020 and 2019, respectively.
[2]	Prior period amounts related to model-based portfolios were reclassified from other (previously reported as portfolio consulting and other) to open-end funds and institutional accounts.

Investments Trading and Equity

Investments Trading and Equity Investments (Details) $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
		Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)new_funds_seeded	Jun. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Trading Securities and Other Trading Assets [Line Items]
Debt Securities, Held-to-maturity, Fair Value		$ 50,200		$ 50,200		$ 50,000
Number of new funds seeded | new_funds_seeded				1
Equity investments at fair value		79,834		$ 79,834		89,872
Equity method investments		451		451		554
Trading		17,278		17,278		14,980
Held-to-maturity	[1]	49,975		49,975		49,807
Investments ($68,255 and $82,829)	[2]	147,538		147,538		$ 155,213
Gain (Loss) on Investments [Abstract]
Net realized gains (losses) during the period		(4,191)	$ 4,526	(5,421)	$ 3,759
Net unrealized gains (losses) during the period on investments still held at the end of the period		11,508	(2,652)	(9,289)	11,979
Gain (loss) from investments—net	[3]	$ 7,317	$ 1,874	$ (14,710)	$ 15,738
Minimum [Member]
Gain (Loss) on Investments [Abstract]
Investments, Held-to-maturity, Fair Value, Original Maturity Period				12 months		12 months
Maximum [Member]
Gain (Loss) on Investments [Abstract]
Investments, Held-to-maturity, Fair Value, Original Maturity Period				24 months		24 months
[1]	Held-to-maturity investments had a fair value of approximately $50.2 million and $50.0 million at June 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 12 to 24 months at June 30, 2020 and December 31, 2019.
[2]	Asset and liability amounts in parentheses represent the aggregated balances at June 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		Jun. 30, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Investments	[1]	$ 147,538	$ 155,213
Other Assets	[1]	8,675	7,433
Total assets		368,288	402,419
Due to brokers	[1]	62	366
Other liabilities and accrued expenses	[1]	10,743	13,972
Total liabilities		111,672	135,304
GLI SICAV
Variable Interest Entity [Line Items]
Investments		6,474	7,048
Due from broker		0	264
Other Assets		165	92
Total assets		6,639	7,404
Due to brokers		0	45
Other liabilities and accrued expenses		110	100
Total liabilities		110	145
GRP-CIP
Variable Interest Entity [Line Items]
Investments		271	337
Due from broker		69	203
Other Assets		0	0
Total assets		340	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		33,039	45,468
Due from broker		361	663
Other Assets		861	681
Total assets		34,261	46,812
Due to brokers		0	92
Other liabilities and accrued expenses		307	466
Total liabilities		307	558
SICAV RAP
Variable Interest Entity [Line Items]
Investments		28,471	29,976
Due from broker		67	613
Other Assets		425	268
Total assets		28,963	30,857
Due to brokers		62	229
Other liabilities and accrued expenses		199	213
Total liabilities		261	442
GLI SICAV, GRP-CIP, SICAV GRE and SICAV RAP
Variable Interest Entity [Line Items]
Investments		68,255	82,829
Due from broker		497	1,743
Other Assets		1,451	1,041
Total assets		70,203	85,613
Due to brokers		62	366
Other liabilities and accrued expenses		621	784
Total liabilities		$ 683	$ 1,150
[1]	Asset and liability amounts in parentheses represent the aggregated balances at June 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		Jun. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading		$ 17,278	$ 14,980
Held-to-maturity	[1]	49,975	49,807
Equity investments at fair value		79,834	89,872
Equity method investments		451	554
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		73,897	85,889
Equity investments at fair value		79,834	89,872
Total investments		147,538	155,213
Derivative - assets		399	644
Derivative - liabilities		381	556
Fair Value, Measurements, Recurring | Commodity futures contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets		341	570
Derivative - liabilities		237	339
Fair Value, Measurements, Recurring | Commodity swap contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - liabilities		49	173
Fair Value, Measurements, Recurring | Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets		58	74
Derivative - liabilities		95	44
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		73,897	85,889
Equity investments at fair value		79,392	89,292
Total investments		79,475	89,292
Derivative - assets		341	570
Derivative - liabilities		237	339
Fair Value, Measurements, Recurring | Level 1 | Commodity futures contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets		341	570
Derivative - liabilities		237	339
Fair Value, Measurements, Recurring | Level 1 | Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
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		56	108
Total investments		17,251	15,088
Derivative - assets		58	74
Derivative - liabilities		144	217
Fair Value, Measurements, Recurring | Level 2 | Commodity futures contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - liabilities		0
Fair Value, Measurements, Recurring | Level 2 | Commodity swap contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - liabilities		49	173
Fair Value, Measurements, Recurring | Level 2 | Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - assets		58	74
Derivative - liabilities		95	44
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		386	472
Total investments		837	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		895	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		839	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		56	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		1,027	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		756	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		271	337
Fixed income | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading		17,278	14,980
Total investments		49,975	49,807
Fixed income | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading		83
Fixed income | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading		17,195	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		77,672	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		77,672	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		115	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		115	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		125	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		125	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		$ 49,975	$ 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%	1.00%
Equity Method Investments | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity method investments		$ 451	$ 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		$ 451	$ 554
[1]	Held-to-maturity investments had a fair value of approximately $50.2 million and $50.0 million at June 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 12 to 24 months at June 30, 2020 and December 31, 2019.

Derivatives (Details)

Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Derivative [Line Items]
Notional Amount, long	$ 11,246		$ 11,246		$ 14,394
Notional Amount, Short	20,043		20,043		24,319
Derivative Assets, Fair Value	399		399		644
Derivative Liabilities, Fair Value	381		381		556
Derivative, Gains (Losses) on derivative, net	(133)	$ 12	4	$ 359
Foreign exchange contracts
Derivative [Line Items]
Notional Amount, long	0		0		0
Notional Amount, Short	9,091		9,091		10,787
Derivative Assets, Fair Value	58		58		74
Derivative Liabilities, Fair Value	95		95		44
Derivative, Gains (Losses) on derivative, net	(164)	(228)	(67)	(36)
Commodity futures contracts
Derivative [Line Items]
Notional Amount, long	11,246		11,246		14,394
Notional Amount, Short	3,168		3,168		4,623
Derivative Assets, Fair Value	341		341		570
Derivative Liabilities, Fair Value	237		237		339
Derivative, Gains (Losses) on derivative, net	412	(155)	(1,689)	741
Commodity swap contracts
Derivative [Line Items]
Notional Amount, long	0		0		0
Notional Amount, Short	7,784		7,784		8,909
Derivative Assets, Fair Value	0		0		0
Derivative Liabilities, Fair Value	49		49		173
Derivative, Gains (Losses) on derivative, net	(381)	$ 395	1,760	$ (346)
Investments
Derivative [Line Items]
Trading investments and pledged as collateral	$ 1,675		$ 1,675		$ 1,713

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net income	$ 32,162	$ 32,649	$ 40,230	$ 72,626
Less: Net (income) loss attributable to redeemable noncontrolling interests	(3,642)	(1,316)	8,862	(8,750)
Net income attributable to common stockholders	$ 28,520	$ 31,333	$ 49,092	$ 63,876
Basic weighted average shares outstanding (shares)	47,826,000	47,304,000	47,739,000	47,226,000
Dilutive potential shares from restricted stock units (shares)	746,000	871,000	810,000	716,000
Diluted weighted average shares outstanding (shares)	48,572,000	48,175,000	48,549,000	47,942,000
Basic earnings per share attributable to common stockholders (in dollars per share)	$ 0.60	$ 0.66	$ 1.03	$ 1.35
Diluted earnings per share attributable to common stockholders (in dollars per share)	$ 0.59	$ 0.65	$ 1.01	$ 1.33
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	63,000	0	0	2,300

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 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%
Affiliated Funds
Income Tax Contingency [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 2.9	$ 2.4	$ 6.1	$ 4.8
U.S. Federal, State, Local and Foreign Taxes
Income Tax Contingency [Line Items]
Effective income tax rate reconciliation, percent	28.00%	24.20%	19.00%	24.20%

Regulatory Requirements (Detail

Regulatory Requirements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Financial Instruments Owned and Pledged as Collateral [Line Items]
Dividends	$ 18,999	$ 17,662	$ 38,040	$ 35,324
Subsidiaries
Financial Instruments Owned and Pledged as Collateral [Line Items]
Proceeds from Dividends Received	12,900
Securities Registered Domestically
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net Capital	3,300		3,300
Excess Capital	3,100		3,100
Securities Regulated By Foreign Entities - Asia
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net Capital	2,400		2,400
Excess Capital	2,000		2,000
Securities Regulated By Foreign Entities - UK
Financial Instruments Owned and Pledged as Collateral [Line Items]
Net Capital	26,200		26,200
Excess Capital	$ 21,900		$ 21,900

Related Party Transactions (Det

Related Party Transactions (Details) - Affiliated Funds - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2020		Jun. 30, 2019		Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Related Party Transactions, Revenue [Abstract]
Investment advisory and administrative fees	$ 61,035,000	[1]	$ 65,409,000	[1]	$ 129,377,000	$ 125,105,000
Distribution and service fees	6,930,000		7,418,000		14,713,000	14,391,000
Total	67,965,000		72,827,000		144,090,000	139,496,000
Related Party Transaction, Expenses from Transactions with Related Party	2,900,000		2,400,000		6,100,000	4,800,000
Proceeds from sales	0		5,399,000		7,000	26,506,000
Gross realized gains	0		32,000		0	32,000
Gross realized losses	0		0		0	(907,000)
Dividend income	1,000		$ 28,000		2,000	$ 30,000
Receivables due from company-sponsored mutual funds	23,955,000				23,955,000		$ 26,701,000
Payables due to company-sponsored mutual funds	$ 1,079,000				$ 1,079,000		$ 474,000
[1]	Investment advisory and administration fees are reflected net of fund reimbursements of $2.9 million and $2.4 million for the three months ended June 30, 2020 and 2019, respectively, and $6.1 million and $4.8 million for the six months ended June 30, 2020 and 2019, respectively.

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	6 Months Ended
	Jun. 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) - $ / shares	Aug. 06, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Subsequent Event [Line Items]
Dividends, Common Stock, Cash		$ 0.39	$ 0.36	$ 0.78	$ 0.72
Dividend Declared | Subsequent Event
Subsequent Event [Line Items]
Dividends, Common Stock, Cash	$ 0.39