Artisan Partners Asset Management (APAM) 10-K 23 Feb 21 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information Document - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Feb. 19, 2021	Jun. 30, 2020
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	001-35826
Entity Registrant Name	Artisan Partners Asset Management Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-0969585
Entity Address, Address Line One	875 E. Wisconsin Avenue
Entity Address, Address Line Two	Suite 800
Entity Address, City or Town	Milwaukee
Entity Address, State or Province	WI
Entity Address, Postal Zip Code	53202
City Area Code	414
Local Phone Number	390-6100
Title of 12(b) Security	Class A Common Stock, $0.01 par value
Trading Symbol	APAM
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Central Index Key	0001517302
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	true
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Public Float			$ 2,000,000
Share Price (in dollars per share)			$ 32.50
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		62,981,300
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		4,457,958
Class C Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		10,983,145

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Accounts receivable	$ 99,888	$ 81,868
Investment securities	3,656	23,878
Prepaid expenses	10,820	9,589
Property and equipment, net	35,874	39,495
Operating lease assets	79,304	87,155
Restricted cash	629	629
Deferred tax assets	482,061	435,897
Other	6,942	3,099
Total assets	1,151,962	933,619
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS, AND STOCKHOLDERS’ EQUITY
Accounts payable, accrued expenses, and other	24,727	19,926
Accrued incentive compensation	12,924	16,159
Operating lease liabilities	92,671	101,154
Borrowings	199,284	199,103
Amounts payable under tax receivable agreements	412,468	375,324
Total liabilities	867,167	752,008
Commitments and contingencies
Redeemable noncontrolling interests	93,753	43,110
Additional paid-in capital	107,738	89,149
Retained earnings	72,944	44,455
Accumulated other comprehensive income (loss)	(991)	(1,425)
Total Artisan Partners Asset Management Inc. stockholders’ equity	180,477	132,957
Noncontrolling interests - Artisan Partners Holdings	10,565	5,544
Total stockholders’ equity	191,042	138,501
Total liabilities, redeemable noncontrolling interests, and stockholders’ equity	1,151,962	933,619
Consolidated Entity, Excluding VIE
ASSETS
Cash and cash equivalents	154,987	134,621
Variable Interest Entity, Primary Beneficiary
ASSETS
Cash and cash equivalents	43,834	9,005
Investment securities	230,380	106,736
Accounts receivable and other	3,587	1,647
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS, AND STOCKHOLDERS’ EQUITY
Accounts payable, accrued expenses, and other	109,362	34,156
Class A Common Stock
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS, AND STOCKHOLDERS’ EQUITY
Common stock	631	564
Class B Common Stock
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS, AND STOCKHOLDERS’ EQUITY
Common stock	45	78
Class C Common Stock
LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS, AND STOCKHOLDERS’ EQUITY
Common stock	$ 110	$ 136

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parenthetical)	Dec. 31, 2020$ / sharesshares
Common stock, par value (in dollars per share) | $ / shares	$ 0.01
Outstanding	78,572,110
Class A Common Stock
Authorized	500,000,000
Outstanding	63,131,007
Class B Common Stock
Authorized	200,000,000
Outstanding	4,457,958
Class C Common Stock
Authorized	400,000,000
Outstanding	10,983,145

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues
Revenue from Contracts with Customers	$ 899,567	$ 798,952	$ 828,635
Total revenues	899,567	798,952	828,635
Operating Expenses
Compensation and benefits	435,818	400,456	413,166
Distribution, servicing and marketing	24,312	23,170	26,561
Occupancy	21,922	23,319	18,700
Communication and technology	38,138	39,499	37,164
General and administrative	21,053	29,053	28,103
Total operating expenses	541,243	515,497	523,694
Operating Income (Loss), Total	358,324	283,455	304,941
Non-operating income (expense)
Interest expense	(10,804)	(11,054)	(11,223)
Net investment gain (loss) of consolidated investment products	160	5,101	688
Net gain (loss) on the tax receivable agreements	(4,674)	(19,557)	251
Total non-operating income (expense)	10,974	(14,189)	(3,153)
Income before income taxes	369,298	269,266	301,788
Provision for income taxes	60,795	27,809	47,598
Net income before noncontrolling interests	308,503	241,457	254,190
Less: Net income attributable to noncontrolling interests - Artisan Partners Holdings	81,079	80,055	91,054
Less: Net income attributable to noncontrolling interests - consolidated investment products	14,807	4,866	4,827
Net income attributable to Artisan Partners Asset Management Inc.	$ 212,617	$ 156,536	$ 158,309
Basic earnings per share (in dollars per share)	$ 3.40	$ 2.65	$ 2.84
Diluted earnings per share (in dollars per share)	$ 3.40	$ 2.65	$ 2.84
Basic weighted average number of common shares outstanding	55,633,529	51,127,929	48,862,435
Diluted weighted average number of common shares outstanding	55,637,922	51,127,929	48,862,435
Dividends declared per Class A common share	$ 3.39	$ 3.39	$ 3.19
Variable Interest Entity, Primary Beneficiary
Non-operating income (expense)
Net investment gain (loss) of consolidated investment products	$ 26,147	$ 10,084	$ 5,721
Consolidated Entity Excluding Variable Interest Entities (VIE)
Non-operating income (expense)
Net investment gain (loss) of consolidated investment products	305	6,338	2,098
Management fees
Revenues
Revenue from Contracts with Customers	884,902	794,338	825,679
Performance fees
Revenues
Revenue from Contracts with Customers	$ 14,665	$ 4,614	$ 2,956

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income before noncontrolling interests	$ 308,503	$ 241,457	$ 254,190
Other Comprehensive Income (Loss)
Foreign currency translation gain (loss)	732	732	(1,002)
Total other comprehensive income (loss)	732	732	(1,002)
Comprehensive income	309,235	242,189	253,188
Comprehensive income attributable to Artisan Partners Asset Management Inc.	213,052	157,006	157,545
Artisan Partners Holdings LP
Other Comprehensive Income (Loss)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	81,376	80,317	90,816
Consolidated Investment Products
Other Comprehensive Income (Loss)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	$ 14,807	$ 4,866	$ 4,827

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders’ Equity - USD ($) $ in Thousands	Total	Common StockClass A Common Stock	Common StockClass B Common Stock	Common StockClass C Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling interests - Artisan Partners Holdings
Increase (Decrease) in Stockholders' Equity
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	$ 62,581
Balance at beginning of period at Dec. 31, 2017	108,065	$ 505	$ 119	$ 132	$ 147,910	$ (37,870)	$ (873)	$ (1,858)
Increase (Decrease) in Stockholders' Equity
Net income	254,190					158,309		91,054
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	249,363
Comprehensive income attributable to noncontrolling interests - consolidated investment products	4,827
Other comprehensive income - foreign currency translation	(1,002)						(717)	(285)
Other comprehensive income - available for sale investments, net of tax	98					358	(260)
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	0				(4,878)		(45)	4,923
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	53,554				37,589			15,965
Adjustments to Paid In Capital Establishment of Deferred Tax Assets Net Of Amounts Payable Under Tax Receivable Agreements	4,376				4,376
Issuance of Class A common stock, net of issuance costs	21,289	6			21,283
Forfeitures and employee/partner terminations		5	(20)	15	0
Stock Issued During Period, Value, Restricted Stock Award, Gross	0	15			15
Employee net share settlement	(2,564)				(1,742)			(820)
Exchange of subsidiary equity		12	(7)	(5)	0
Purchase of equity and subsidiary equity	(21,478)		(6)	0	(21,472)
Capital contributions, net	46,572
Distributions	(103,434)							(103,434)
Dividends	(167,780)				(85,498)	(82,180)		(102)
Impact of deconsolidation of CIPs	(79,631)
Balance at end of period at Dec. 31, 2018	140,487	541	86	142	97,553	38,617	(1,895)	5,443
Increase (Decrease) in Stockholders' Equity
Payments for Repurchase of Other Equity	21,478
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	34,349
Net income	241,457					156,536		80,055
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	236,591
Comprehensive income attributable to noncontrolling interests - consolidated investment products	4,866
Other comprehensive income - foreign currency translation	732						521	211
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	0				(3,533)		(51)	3,584
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	43,095				31,268			11,827
Adjustments to Paid In Capital Establishment of Deferred Tax Assets Net Of Amounts Payable Under Tax Receivable Agreements	2,716				2,716
Issuance of Class A common stock, net of issuance costs	(22)				(22)
Forfeitures and employee/partner terminations	0
Stock Issued During Period, Value, Restricted Stock Award, Gross	0	10			10
Employee net share settlement	(2,078)	(1)			(1,470)			(607)
Exchange of subsidiary equity	0	14	(8)	(6)
Capital contributions, net	3,895
Distributions	(94,842)							(94,842)
Dividends	(188,178)				(37,353)	(150,698)		(127)
Balance at end of period at Dec. 31, 2019	138,501	564	78	136	89,149	44,455	(1,425)	5,544
Increase (Decrease) in Stockholders' Equity
Payments for Repurchase of Other Equity	0
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	43,110
Net income	308,503					212,617		81,079
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	293,696
Comprehensive income attributable to noncontrolling interests - consolidated investment products	14,807
Other comprehensive income - foreign currency translation	732						623	109
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	0				(2,544)		(189)	2,733
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	37,027				28,801	0		8,226
Adjustments to Paid In Capital Establishment of Deferred Tax Assets Net Of Amounts Payable Under Tax Receivable Agreements	14,740				14,740
Issuance of Class A common stock, net of issuance costs	62,714	18			62,696
Forfeitures and employee/partner terminations	0
Stock Issued During Period, Value, Restricted Stock Award, Gross	0	9			9
Employee net share settlement	(4,530)	(1)			(3,314)			(1,215)
Exchange of subsidiary equity	0	41	(15)	(26)
Purchase of equity and subsidiary equity	(63,027)		(18)		(63,009)
Capital contributions, net	38,277
Distributions	(85,805)							(85,805)
Dividends	(203,006)				(18,772)	(184,128)		(106)
Impact of deconsolidation of CIPs	(2,441)
Balance at end of period at Dec. 31, 2020	191,042	$ 631	$ 45	$ 110	$ 107,738	$ 72,944	$ (991)	$ 10,565
Increase (Decrease) in Stockholders' Equity
Payments for Repurchase of Other Equity	63,027
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	$ 93,753

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net income before noncontrolling interests	$ 308,503	$ 241,457	$ 254,190
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,625	6,233	5,668
Deferred income taxes	27,990	7,356	24,863
Asset impairment	871	2,107	0
Noncash lease expense	(1,499)	1,533	4,086
Net investment (gain) loss on nonconsolidated seed investment securities	(160)	(5,101)	(688)
Net (gain) loss on the tax receivable agreements	4,674	19,557	(251)
(Gain) loss on disposal of property and equipment	5	275	18
Amortization of debt issuance costs	422	463	457
Share-based compensation	37,027	43,095	53,554
Net investment (gain) loss of consolidated investment products	(26,147)	(10,084)	(5,721)
Purchase of investments by consolidated investment products	(191,274)	(123,366)	(643,548)
Proceeds from sale of investments by consolidated investment products	137,561	75,468	611,117
Change in assets and liabilities resulting in an increase (decrease) in cash:
Accounts receivable	(18,020)	(14,178)	9,002
Prepaid expenses and other assets	(6,110)	1,031	(2,275)
Accounts payable and accrued expenses	1,622	6,881	10,027
Net change in operating assets and liabilities of consolidated investment products	36,587	40,066	12,823
Net cash provided by operating activities	318,677	292,793	333,322
Cash flows from investing activities
Acquisition of property and equipment	(2,049)	(3,498)	(2,834)
Payments For Leasehold Improvements	1,050	14,286	11,007
Proceeds from sale of investment securities	24,001	288	0
Purchase of investment securities	(2,150)	(10)	(500)
Net cash provided by (used in) investing activities	18,752	(17,506)	(14,341)
Cash flows from financing activities
Partnership distributions	85,805	94,842	103,434
Dividends paid	(203,006)	(188,178)	(167,780)
Payment of debt issuance costs	0	(366)	0
Proceeds from issuance of notes payable	0	50,000	0
Principal payments on notes payable	0	(50,000)	0
Tax Receivable Agreement Payments	26,943	24,998	36,111
Net proceeds from issuance of common stock	63,027	0	21,478
Payment of costs directly associated with the issuance of Class A common stock	(227)	0	(166)
Payments for Repurchase of Other Equity	(63,027)	0	(21,478)
Taxes paid related to employee net share settlement	(4,530)	(2,078)	(2,564)
Capital contributions to consolidated investment products, net	38,277	3,895	46,572
Net cash used in financing activities	(282,234)	(306,567)	(263,483)
Net increase (decrease) in cash, cash equivalents and restricted cash	55,195	(31,280)	55,498
Net cash impact of deconsolidation of CIPs	0	0	(39,759)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning Balance	144,255	175,535	159,796
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance	199,450	144,255	175,535
Cash, cash equivalents and restricted cash
Restricted cash	629	629	629
Noncash activity:
Establishment of deferred tax assets	77,756	35,999	24,679
Establishment of amounts payable under tax receivable agreements	64,087	30,967	20,303
Increase in investment securities due to deconsolidation of consolidated investment products	1,469	946	11,381
Operating lease assets obtained in exchange for operating leases	3,425	4,162	0
Cash paid for:
Interest on borrowings	10,255	10,649	10,694
Income tax	35,484	18,593	20,731
Consolidated Entity, Excluding VIE
Cash, cash equivalents and restricted cash
Cash and cash equivalents	154,987	134,621	160,463
Variable Interest Entity, Primary Beneficiary
Adjustments to reconcile net income to net cash provided by operating activities:
Net investment (gain) loss on nonconsolidated seed investment securities	(26,147)	(10,084)	(5,721)
Cash, cash equivalents and restricted cash
Cash and cash equivalents	43,834	9,005
Cash and cash equivalents of consolidated investment products	$ 43,834	$ 9,005	$ 14,443

Nature of Business and Organiza

Nature of Business and Organization	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business and Organization	Note 1. Nature of Business and Organization Nature of Business Artisan Partners Asset Management Inc. (“APAM”), through its subsidiaries, is an investment management firm focused on providing high-value added, active investment strategies to sophisticated clients globally. APAM and its subsidiaries are hereafter referred to collectively as “Artisan” or the “Company”. Artisan’s autonomous investment teams manage a broad range of U.S., non-U.S. and global investment strategies that are diversified by asset class, market cap and investment style. Strategies are offered through multiple investment vehicles to accommodate a broad range of client mandates. Artisan offers its investment management services primarily to institutions and through intermediaries that operate with institutional-like decision-making processes and have long-term investment horizons. Organization On March 12, 2013, APAM completed its initial public offering (the “IPO”). APAM was formed for the purpose of becoming the general partner of Artisan Partners Holdings LP (“Artisan Partners Holdings” or “Holdings”) in connection with the IPO. Holdings is a holding company for the investment management business conducted under the name “Artisan Partners”. The reorganization (“IPO Reorganization”) established the necessary corporate structure to complete the IPO while at the same time preserving the ability of the firm to conduct operations through Holdings and its subsidiaries. As the sole general partner, APAM controls the business and affairs of Holdings. As a result, APAM consolidates Holdings’ financial statements and records a noncontrolling interest for the equity interests in Holdings held by the limited partners of Holdings. At December 31, 2020, APAM held approximately 80% of the equity ownership interest in Holdings.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Summary of significant accounting policies	Note 2. Summary of Significant Accounting Policies Basis of presentation The accompanying consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and related rules and regulations of the SEC. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates or assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from these estimates or assumptions. Principles of consolidation Artisan’s policy is to consolidate all subsidiaries or other entities in which it has a controlling financial interest. The consolidation guidance requires an analysis to determine if an entity should be evaluated for consolidation using the voting interest entity (“VOE”) model or the variable interest entity (“VIE”) model. Under the VOE model, controlling financial interest is generally defined as a majority ownership of voting interests. Under the VIE model, controlling financial interest is defined as (i) the power to direct activities that most significantly impact the economic performance of the entity and (ii) the right to receive potentially significant benefits or the obligation to absorb potentially significant losses. Artisan generally consolidates VIEs in which it meets the power criteria and holds an equity ownership interest of greater than 10%. The consolidated financial statements include the accounts of APAM and all subsidiaries or other entities in which APAM has a direct or indirect controlling financial interest. All material intercompany balances have been eliminated in consolidation. Artisan serves as the investment adviser to Artisan Funds, Artisan Global Funds and Artisan Private Funds. Artisan Funds and Artisan Global Funds are corporate entities the business and affairs of which are managed by their respective boards of directors. The shareholders of the funds retain voting rights, including rights to elect and reelect members of their respective boards of directors. Each series of Artisan Funds is a VOE and is separately evaluated for consolidation under the VOE model. The shareholders of Artisan Global Funds lack simple majority liquidation rights, and as a result, each sub-fund of Artisan Global Funds is evaluated for consolidation under the VIE model. Artisan Private Funds are also evaluated for consolidation under the VIE model because third-party equity holders of the funds generally lack the ability to divest Artisan of its control of the funds. From time to time, the Company makes investments in Artisan Funds, Artisan Global Funds and Artisan Private Funds. If the investment results in a controlling financial interest, APAM consolidates the fund, and the underlying activity of the entire fund is included in Artisan’s Consolidated Financial Statements. As of December 31, 2020, Artisan had a controlling financial interest in three sub-funds of Artisan Global Funds and three Artisan Private Funds and, as a result, these funds are included in Artisan’s Consolidated Financial Statements. Because these consolidated investment products meet the definition of investment companies under U.S. GAAP, Artisan has retained the specialized industry accounting principles for investment companies in the consolidated financial statements. See Note 6, “Variable Interest Entities and Consolidated Investment Products” for additional details. Operating segments Artisan operates in one segment, the investment management industry. Artisan provides investment management services to separate accounts, mutual funds and other pooled investment vehicles. Management assesses the financial performance of these vehicles on a combined basis. Cash and cash equivalents Artisan defines cash and cash equivalents as money market funds and other highly liquid investments with original maturities of 90 days or less. Cash and cash equivalents are stated at cost, which approximates fair value due to the short-term nature and liquidity of these financial instruments. For disclosure purposes, cash equivalents are categorized as Level 1 in the fair value hierarchy. Cash and cash equivalents are subject to credit risk and were primarily maintained in demand deposit accounts with financial institutions or treasury money market funds. Interest and dividends related to cash and cash equivalents is recorded in other investment gain (loss) in the Consolidated Statements of Operations. Foreign currency translation Assets and liabilities of foreign operations whose functional currency is not the U.S. dollar are translated at prevailing year-end exchange rates. Revenue and expenses of such foreign operations are translated at average exchange rates during the year. The net effect of the translation adjustment for foreign operations is included in other comprehensive income (loss) in the Consolidated Statements of Comprehensive Income. The cumulative effect of translation adjustments is included in accumulated other comprehensive income (loss) and noncontrolling interests - Artisan Partners Holdings in the Consolidated Statements of Financial Condition, based on period-end ownership levels. Accounts receivable Accounts receivable are carried at invoiced amounts and consist primarily of investment advisory fees that have been earned, but not yet received from clients. Due to the short-term nature of the receivables, the carrying values of these assets approximate fair value. The accounts receivable balance does not include any allowance for doubtful accounts as Artisan believes all accounts receivable balances are fully collectible. There has not been any bad debt expense recorded for the years ended December 31, 2020, 2019 and 2018. Investment securities Investment securities consist of nonconsolidated investments in shares of Artisan Funds, Artisan Global Funds, and Artisan Private Funds. Investments provide exposure to various risks, including price risk (the risk of a potential future decline in value of the investment) and foreign currency risk. Investments are carried at fair value based on net asset values as of the valuation date. Realized and unrealized gains (losses) on nonconsolidated investment securities are recorded in other investment gain (loss) in the Consolidated Statements of Operations. Dividend income from these investments is recognized when earned and is also included in other investment gain (loss). Property and equipment Property and equipment are carried at cost, less accumulated depreciation. Depreciation is generally recognized on a straight-line basis over the estimated useful lives of the respective assets or the remaining lease term, whichever is shorter. The estimated useful lives of property and equipment as of December 31, 2020 are as follows: Property and Equipment Type Useful Life Computers and equipment Five years Computer software Three Furniture and fixtures Seven years Leasehold improvements Two Implementation costs incurred to develop or obtain internal-use software, including hosting arrangements, are capitalized and expensed on a straight-line basis over either the estimated useful life of the respective software or the term of the hosting arrangement. Property and equipment is tested for impairment when there is an indication that the carrying amount of an asset may not be recoverable. When an asset is determined to not be recoverable, the impairment loss is measured based on the excess, if any, of the carrying value of the asset over its fair value. Leases Artisan has lease commitments for office space, parking structures, and equipment, which are all accounted for as operating leases. Artisan records expense for operating leases on a straight-line basis over the lease term. Any lease incentives received by Artisan are also amortized on a straight-line basis over the lease term. Artisan assesses its contractual arrangements for the existence of a lease at inception. Operating leases with an initial term greater than 12 months are recorded as operating lease assets and operating lease liabilities in the Consolidated Statements of Financial Condition. Lease components (e.g. fixed rental payments) and non-lease components (e.g. fixed common-area maintenance costs) are generally accounted for as a single component. Operating lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. Operating lease assets are recognized at the lease commencement date based on the present value of lease payments over the lease term, adjusted for prepaid rent and the remaining balance of lease incentives received. Artisan's lease agreements generally do not provide an implicit interest rate, and therefore the present value calculation uses Artisan's estimated incremental borrowing rate. A market-based approach is used to estimate the incremental borrowing rate for each individual lease using observable market interest rates and Artisan specific inputs. The lease terms include periods covered by options to extend or exclude periods covered by options to terminate the lease when it is reasonably certain that Artisan will exercise that option. Restricted cash Restricted cash represents cash that is restricted as collateral on a standby letter of credit related to a lease obligation. Cash and cash equivalents of consolidated investment products Cash and cash equivalents of consolidated investment products consist of highly liquid investments, including money market funds. See Note 6, “Variable Interest Entities and Consolidated Investment Products” for additional details. Investment assets and liabilities of consolidated investment products Investment assets and liabilities of consolidated investment products primarily consist of equity securities, fixed income securities and options. The carrying value of the investment assets and liabilities is also their fair value. Changes in the fair value of the investments are recognized as gains and losses in earnings. Equity securities are generally valued based upon closing market prices of the security on the principal exchange on which the security is traded. Fixed income securities include corporate bonds, convertible bonds and bank loans. Fixed income securities are generally valued based on the judgment of pricing vendors. Derivative assets and liabilities are generally comprised of put and call options on securities or indices. Put and call options are valued at the mid price (average of the bid price and ask price) as provided by the pricing vendor at the close of trading on the contract’s principal exchange. See Note 6, “Variable Interest Entities and Consolidated Investment Products” for additional details. Redeemable noncontrolling interests Redeemable noncontrolling interests represent third-party investors’ ownership interest in consolidated investment products. Third-party investors in consolidated investment products generally have the right to withdraw their capital, subject to certain conditions. Noncontrolling interests of consolidated investment products that are currently redeemable or convertible for cash or other assets at the option of the holder are classified as temporary equity. Revenue recognition Artisan’s investment advisory revenue is derived from contracts with customers in the form of investment management fees and performance fees. Investment Management Fees Investment management fees are generally computed as a percentage of assets under management and are recognized as revenue at the end of each distinct service period. Fees for providing investment advisory services are computed and billed in accordance with the underlying investment management agreements, which is generally on a monthly or quarterly basis. Investment management fees are presented net of cash rebates and expense reimbursements pursuant to contractual expense limitations of certain funds. Performance Fees A number of investment management agreements provide for performance-based fees or incentive allocations, collectively “performance fees”. Performance fees, if earned, are recognized upon completion of the contractually determined measurement period, which is generally quarterly or annually. Performance fees are not subject to claw back as a result of performance declines subsequent to the most recent measurement date. Revenue Recognition Artisan accounts for asset management services as a single performance obligation that is satisfied over time, using a time-based measure of progress to recognize revenue. Customer consideration is variable due to the uncertainty of the value of assets under management during each distinct service period. At the end of each period, Artisan records revenue for the actual amount of investment management fees earned for that period because the uncertainty has been resolved. Performance fees are subject to the uncertainty of market volatility, and as a result, the entire amount of the variable consideration related to performance fees is constrained until the end of each measurement period. At the end of the measurement period, revenue is recorded for the actual amount of performance fees earned during that period because the uncertainty has been resolved. For performance fees with annual measurement periods, revenue recognized in the current period relates to performance obligations that were partially satisfied in prior periods. Customer Rebates and Expense Reimbursements Artisan has contractually agreed to reimburse for expenses incurred to the extent necessary to limit annualized ordinary operating expenses incurred by certain funds to not more than a fixed percentage of the funds’ average daily net assets. Artisan may also contractually agree to pay fee rebates to certain investors in Artisan Global Funds. Artisan accounts for all reimbursements and rebates as a reduction of the transaction price (and, hence, of revenue) because the billing adjustments and payments represent consideration payable to customers and Artisan does not receive any distinct goods or services from the customers in exchange. Share-based compensation Share-based compensation expense is recognized based on the estimated grant date fair value on a straight-line basis over the requisite service period of the award. The initial requisite service period is generally five years for restricted share-based awards. The Company’s accounting policy is to record the impact of forfeitures when they occur. Distribution, servicing and marketing Artisan Funds has authorized certain financial services companies, broker-dealers, banks or other intermediaries, and in some cases other organizations designated by an authorized intermediary, to accept purchase, exchange, and redemption orders for shares of Artisan Funds on the funds’ behalf. Many intermediaries charge a fee for accounting and shareholder services provided to fund shareholders on the funds’ behalf. Those services typically include recordkeeping, transaction processing for shareholders’ accounts, and other services. The fee is either based on the number of accounts to which the intermediary provides such services or a percentage of the average daily value of fund shares held in such accounts. The funds pay a portion of such fees directly to the intermediaries, which are intended to compensate the intermediary for its provision of services of the type that would be provided by the funds’ transfer agent or other service providers if the shares were registered directly on the books of the funds’ transfer agent. Artisan pays the balance of those fees which includes compensation to the intermediary for its distribution, servicing and marketing of Artisan Funds shares. Artisan Global Funds also have arrangements pursuant to which Artisan is required to pay a portion of its investment management fee for distribution, servicing and marketing of Artisan Global Funds shares. Distribution, servicing and marketing fees paid by Artisan are presented as an operating expense as Artisan is the principal in its role as the primary obligor related to these services. Fees paid were as follows: For the Years Ended December 31, 2020 2019 2018 Fees paid with respect to Artisan Funds $ 21,320 $ 20,096 $ 22,822 Fees paid with respect to Global Funds 595 424 1,002 Other marketing expenses 2,397 2,650 2,737 Total distribution, servicing and marketing $ 24,312 $ 23,170 $ 26,561 Accrued fees to intermediaries were $4.2 million and $3.3 million as of December 31, 2020 and 2019, respectively, and are included in accounts payable, accrued expenses and other in the Consolidated Statements of Financial Condition. Loss contingencies Artisan considers the assessment of loss contingencies as a significant accounting policy because of the significant uncertainty relating to the outcome of any potential legal actions and other claims and the difficulty of predicting the likelihood and range of the potential liability involved, coupled with the material impact on Artisan’s results of operations that could result from legal actions or other claims and assessments. Artisan recognizes estimated costs to defend as incurred. Potential loss contingencies are reviewed at least quarterly and are adjusted to reflect the impact and status of settlements, rulings, advice of counsel and other information pertinent to a particular matter. Significant differences could exist between the actual cost required to investigate, litigate and/or settle a claim or the ultimate outcome of a suit and management’s estimate. These differences could have a material impact on Artisan’s results of operations, financial position, or cash flows. Recoveries of losses are recognized in the Consolidated Statements of Operations when receipt is deemed probable. No loss contingencies were recorded at December 31, 2020, 2019 and 2018. Currently, there are no legal or administrative proceedings that management believes may have a material effect on Artisan’s consolidated financial position, cash flows or results of operations. Income taxes Artisan accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the future tax consequences attributable to temporary differences between the financial statement carrying amounts and tax bases of assets and liabilities. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be realized or settled. Artisan recognizes a valuation allowance if it is more likely than not that some portion or all of the deferred tax assets will not be realized. Artisan accounts for uncertain income tax positions by recognizing the impact of a tax position in its consolidated financial statements when Artisan believes it is more likely than not that the tax position would not be sustained upon examination by the appropriate tax authorities based on the technical merits of the position. Comprehensive income (loss) Total comprehensive income (loss) includes net income and other comprehensive income. Other comprehensive income (loss) consists of foreign currency translation. Partnership distributions Artisan makes distributions to its partners for purposes of paying income taxes as required under the terms of Artisan Partners Holdings’ partnership agreement. Tax distributions are calculated utilizing the highest combined individual federal, state and local income tax rate among the various locations in which the partners, as a result of owning their interests in the partnership, are subject to tax, assuming maximum applicability of the phase-out of itemized deductions contained in the Internal Revenue Code for tax years prior to 2018. Artisan also makes additional distributions under the terms of the partnership agreement. Distributions are recorded in the financial statements on the declaration date. Earnings per share Basic earnings per share is computed under the two-class method by dividing income available to Class A common stockholders by the weighted average number of Class A common shares outstanding during the period. Unvested restricted share-based awards are excluded from the number of Class A common shares outstanding for the basic earnings per share calculation because the shares have not yet been earned by employees. Income available to Class A common stockholders is computed by reducing net income attributable to APAM by earnings (both distributed and undistributed) allocated to participating securities, according to their respective rights to participate in those earnings. Except for certain performance share units, unvested share-based awards are participating securities because the awards include non-forfeitable dividend rights during the vesting period. Class B and Class C common shares do not share in profits of APAM and therefore are not reflected in the calculations. Diluted earnings per share is computed under the more dilutive of the treasury stock method or the two-class method. The weighted average number of Class A common shares outstanding during the period is increased by the assumed conversion of nonparticipating unvested share-based awards into Class A common stock using the treasury stock method. Recent accounting pronouncements Accounting standards adopted as of January 1, 2020 In August 2018, the FASB issued ASU 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract , which aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The capitalized implementation costs will be expensed over the term of the hosting arrangement. The Company adopted the new guidance on January 1, 2020. The Company capitalized $1.3 million of software implementation costs and recorded $0.1 million of related amortization expense during the year ended December 31, 2020. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses , which requires entities to measure credit losses on financial assets based on expected losses rather than incurred losses. The guidance was effective on January 1, 2020 and requires a modified retrospective approach to adoption. The adoption of this guidance did not have an impact on the consolidated financial statements.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Note 3. Investment Securities The disclosures below include details of Artisan’s investments, excluding money market funds and consolidated investment products. Investments held by consolidated investment products are described in Note 6, “Variable Interest Entities and Consolidated Investment Products”. As of December 31, 2020 As of December 31, 2019 Investments in equity securities $ 2,807 $ 7,543 Investments in equity securities accounted for under the equity method 849 16,335 Total investment securities $ 3,656 $ 23,878 Artisan’s investments in equity securities consist of investments in shares of Artisan Funds, Artisan Global Funds and Artisan Private Funds. Unrealized gains on investment securities held as of December 31, 2020, 2019 and 2018 were $0.7 million, $5.0 million, and $0.7 million, respectively.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 4. Fair Value Measurements The table below presents information about Artisan’s assets and liabilities that are measured at fair value and the valuation techniques Artisan utilized to determine such fair value. The financial instruments held by consolidated investment products are excluded from the table below and are presented in Note 6, “Variable Interest Entities and Consolidated Investment Products”. In accordance with ASC 820, fair value is defined as the price that Artisan would receive upon selling an investment in an orderly transaction to an independent buyer in the principal or most advantageous market for the investment. The following three-tier fair value hierarchy prioritizes the inputs used in measuring fair value: • Level 1 – Observable inputs such as quoted (unadjusted) market prices in active markets for identical securities. • Level 2 – Other significant observable inputs (including but not limited to quoted prices for similar instruments, interest rates, prepayment speeds, credit risk, etc.). • Level 3 – Significant unobservable inputs (including Artisan’s own assumptions in determining fair value). The following provides the hierarchy of inputs used to derive fair value of Artisan’s assets and liabilities that are financial instruments as of December 31, 2020 and 2019: Assets and Liabilities at Fair Value Total NAV Practical Expedient (No Fair Value Level) Level 1 Level 2 Level 3 December 31, 2020 Assets Money market funds $ 25,855 $ — $ 25,855 $ — $ — Equity securities 3,656 57 3,599 — — December 31, 2019 Assets Money market funds $ 30,673 $ — $ 30,673 $ — $ — Equity securities 23,878 15,068 8,810 — —

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Borrowings	Note 5. Borrowings Artisan’s borrowings consist of the following as of December 31, 2020 and 2019: Maturity Outstanding Balance Interest Rate Per Annum Revolving credit agreement August 2022 — NA Senior notes Series C August 2022 90,000 5.82 % Series D August 2025 60,000 4.29 % Series E August 2027 50,000 4.53 % Total borrowings $ 200,000 The fair value of borrowings was approximately $207.7 million as of December 31, 2020. Fair value was determined based on future cash flows, discounted to present value using current market interest rates. The inputs are categorized as Level 2 in the fair value hierarchy, as defined in Note 4, “Fair Value Measurements”. Senior notes - On August 16, 2019, Holdings issued $50 million of 4.53% Series E senior notes and used the proceeds to repay the $50 million of 5.32% Series B senior notes that matured on August 16, 2019. The fixed interest rate on each series of unsecured notes is subject to a one percentage point increase in the event Holdings receives a below-investment grade rating and any such increase will continue to apply until an investment grade rating is received. Revolving credit agreement - Any loans outstanding under the revolving credit agreement bear interest at a rate per annum equal to, at the Company’s election, (i) LIBOR adjusted by a statutory reserve percentage plus an applicable margin ranging from 1.50% to 2.50%, depending on Holdings’ leverage ratio (as defined in the revolving credit agreement) or (ii) an alternate base rate equal to the highest of (a) Citibank, N.A.’s prime rate, (b) the federal funds effective rate plus 0.50%, and (c) the daily one-month LIBOR adjusted by a statutory reserve percentage plus 1.00%, plus, in each case, an applicable margin ranging from 0.50% to 1.50%, depending on Holdings’ leverage ratio. Unused commitments will bear interest at a rate that ranges from 0.175% to 0.500%, depending on Holdings’ leverage ratio. As of and for the year-ended December 31, 2020, there were no borrowings outstanding under the revolving credit agreement and the interest rate on the unused commitment was 0.175%. The unsecured notes and the revolving credit agreement contain certain restrictive financial covenants including a limitation on the leverage ratio of Holdings and a minimum interest coverage ratio. The Company was in compliance with all debt covenants as of December 31, 2020. Interest expense incurred on the unsecured notes and revolving credit agreement was $10.3 million, $10.5 million, and $10.6 million for the years ended December 31, 2020, 2019 and 2018, respectively. As of December 31, 2020, the aggregate maturities of debt obligations, based on their contractual terms, are as follows: 2021 $ — 2022 90,000 2023 — 2024 — 2025 60,000 Thereafter 50,000 Total $ 200,000

Variable Interest Entities and

Variable Interest Entities and Consolidated Investment Products (Notes)	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Variable Interest Entities and Consolidated Investment Products	Note 6. Variable Interest Entities and Consolidated Investment Products Artisan serves as the investment adviser for various types of investment products, consisting of both VIEs and VOEs. Artisan consolidates an investment product if it has a controlling financial interest in the entity. See Note 2, “Summary of Significant Accounting Policies”. Any such entities are collectively referred to herein as consolidated investment products or CIPs. As of December 31, 2020, Artisan is considered to have a controlling financial interest in three sub-funds of Artisan Global Funds and three Artisan Private Funds, with an aggregate direct equity investment in the consolidated investment products of $59.0 million. Artisan’s maximum exposure to loss in connection with the assets and liabilities of CIPs is limited to its direct equity investment, while the potential benefit is limited to the management and performance fees received and the return on its equity investment. With the exception of Artisan’s direct equity investment, the assets of CIPs are not available to Artisan’s creditors, nor are they available to Artisan for general corporate purposes. In addition, third-party investors in the CIPs have no recourse to the general credit of the Company. Management and performance fees earned from CIPs are eliminated from revenue upon consolidation. See Note 17, “Related Party Transactions” for additional information on management and performance fees earned from CIPs. Third-party investors’ ownership interest in CIPs is presented as redeemable noncontrolling interests in the Consolidated Statements of Financial Condition as third-party investors have the right to withdraw their capital, subject to certain conditions. Net income attributable to third-party investors is reported as net income attributable to noncontrolling interests - consolidated investment products in the Consolidated Statements of Operations. During the year ended December 31, 2020, the Company determined that it no longer had a controlling financial interest in one sub-fund of Artisan Global Funds as a result of third party capital contributions. Upon loss of control, the VIE was deconsolidated and the related assets, liabilities and equity of the fund were derecognized from the Company’s Consolidated Statements of Financial Condition. There was no net impact to the Consolidated Statements of Operations for the year ended December 31, 2020. Artisan generally does not recognize a gain or loss upon deconsolidation of investment products because the assets and liabilities of CIPs are carried at fair value. Upon deconsolidation, Artisan's $1.5 million direct equity investment was reclassified from investment assets of consolidated investment products to investment securities in the Company's Consolidated Statements of Financial Condition. As of December 31, 2020, Artisan held direct equity investments of $0.8 million in VIEs for which the Company does not hold a controlling financial interest. These direct equity investments consisted of seed investments in sub-funds of Artisan Global Funds and Artisan Private Funds, both of which are accounted for under the equity method of accounting because Artisan has significant influence over the funds. Fair Value Measurements - Consolidated Investment Products The carrying value of CIPs’ investments is also their fair value. Short and long positions on equity securities are valued based upon closing prices of the security on the exchange or market designated by the accounting agent or pricing vendor as the principal exchange. The closing price may represent last sale price, official closing price, a closing auction or other information depending on market convention. Short and long positions on fixed income instruments are valued at market value. Market values are generally evaluations based on the judgment of pricing vendors, which may consider, among other factors, the prices at which securities actually trade, broker-dealer quotations, pricing formulas, estimates of market values obtained from yield data relating to investments or securities with similar characteristics and/or discounted cash flow models that might be applicable. Derivative assets and liabilities are generally comprised of put and call options on securities and indices. Put and call options are valued at the mid price (average of bid price and ask price) as provided by the pricing vendor at the close of trading on the contract’s principal exchange. The following tables present the fair value hierarchy levels of assets and liabilities held by CIPs measured at fair value as of December 31, 2020 and 2019: Assets and Liabilities at Fair Value Total Level 1 Level 2 Level 3 December 31, 2020 Assets Money market funds $ 7,822 $ 7,822 $ — $ — Equity securities - long position 83,960 83,027 933 — Fixed income instruments - long position 133,518 — 133,518 — Derivative assets 12,902 12,902 — — Liabilities Fixed income instruments - short position $ 14,978 $ — $ 14,978 $ — Derivative liabilities 753 566 187 — December 31, 2019 Assets Money market funds $ 5,005 $ 5,005 $ — $ — Equity securities - long position 9,933 9,933 — — Fixed income instruments - long position 96,681 — 96,681 — Derivative assets 122 22 100 — Liabilities Fixed income instruments - short position $ 6,005 $ — $ 6,005 $ — Derivative liabilities 181 — 181 — CIP balances included in the Company's consolidated statements of financial condition were as follows: As of December 31, As of December 31, Net CIP assets included in the table above $ 222,471 $ 105,555 Net CIP assets not included in the table above (69,763) (28,509) Total Net CIP assets 152,708 77,046 Less: redeemable noncontrolling interests 93,753 43,110 Artisan’s direct equity investment in CIPs $ 58,955 $ 33,936

Noncontrolling Interest - Holdi

Noncontrolling Interest - Holdings	12 Months Ended
	Dec. 31, 2020
Noncontrolling Interest [Abstract]
Noncontrolling Interest - Holdings	Note 7. Noncontrolling Interests - Holdings Net income attributable to noncontrolling interests - Artisan Partners Holdings in the Consolidated Statements of Operations represents the portion of earnings or loss attributable to the equity ownership interests in Holdings held by the limited partners of Holdings. As of December 31, 2020, APAM held approximately 80% of the equity ownership interests in Holdings. Limited partners of Artisan Partners Holdings are entitled to exchange partnership units (along with a corresponding number of shares of Class B or C common stock of APAM) for shares of Class A common stock from time to time (the "Holdings Common Unit Exchanges"). The Holdings Common Unit Exchanges increase APAM's equity ownership interest in Holdings and result in an increase to deferred tax assets and amounts payable under the tax receivable agreements. See Note 11, “Income Taxes and Related Payments”. In order to maintain the one-to-one correspondence of the number of Holdings partnership units and APAM common shares, Holdings will issue one general partner (“GP”) unit to APAM for each share of Class A common stock issued by APAM. For the years ended December 31, 2020, 2019 and 2018, APAM’s equity ownership interest in Holdings has increased as a result of the following transactions: Holdings GP Units Limited Partnership Units Total APAM Ownership % Balance at January 1, 2018 50,463,126 25,106,719 75,569,845 67 % Issuance of APAM Restricted Shares, Net (1) 1,440,282 — 1,440,282 — % 2018 Follow-On Offering 644,424 (644,424) — 1 % Holdings Common Unit Exchanges 1,590,611 (1,590,611) — 2 % Forfeitures from Employee Terminations (1) (67,255) — (67,255) — % Balance at December 31, 2018 54,071,188 22,871,684 76,942,872 70 % Issuance of APAM Restricted Shares, Net (1) 876,271 — 876,271 — % Holdings Common Unit Exchanges 1,499,655 (1,499,655) — 3 % Forfeitures from Employee Terminations (1) (17,289) — (17,289) — % Balance at December 31, 2019 56,429,825 21,372,029 77,801,854 73 % Issuance of APAM Restricted Shares, Net (1) 789,114 — 789,114 — % Delivery of Shares Underlying RSUs (1) 24,233 — 24,233 — % 2020 Follow-On Offering 1,802,326 (1,802,326) — 2 % Holdings Common Unit Exchanges 4,128,600 (4,128,600) — 5 % Forfeitures from Employee Terminations (1) (43,091) — (43,091) — % Balance at December 31, 2020 63,131,007 15,441,103 78,572,110 80 % (1) The impact of the transaction on APAM’s ownership percentage was less than 1%. Changes in ownership of Holdings are accounted for as equity transactions because APAM continues to have a controlling interest in Holdings. Additional paid-in capital and noncontrolling interests - Artisan Partners Holdings in the Consolidated Statements of Financial Condition are adjusted to reallocate Holdings’ historical equity to reflect the change in APAM’s ownership of Holdings. The reallocation of equity had the following impact on the Consolidated Statements of Financial Condition: Statement of Financial Condition For the Years Ended December 31, 2020 2019 Additional paid-in capital $ (2,544) $ (3,533) Noncontrolling interests - Artisan Partners Holdings 2,733 3,584 Accumulated other comprehensive income (loss) (189) (51) Net impact to financial condition $ — $ —

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Stockholders' Equity	Note 8. Stockholders’ Equity APAM - Stockholders’ Equity APAM had the following authorized and outstanding equity as of December 31, 2020 and 2019, respectively: Outstanding Authorized December 31, 2020 December 31, 2019 Voting Rights (1) Economic Rights Common shares Class A, par value $0.01 per share 500,000,000 63,131,007 56,429,825 1 vote per share Proportionate Class B, par value $0.01 per share 200,000,000 4,457,958 7,803,364 1 vote per share None Class C, par value $0.01 per share 400,000,000 10,983,145 13,568,665 1 vote per share None (1) The Company’s employees to whom Artisan has granted equity have entered into a stockholders agreement with respect to all shares of APAM common stock they have acquired from the Company and any shares they may acquire from the Company in the future, pursuant to which they granted an irrevocable voting proxy to a Stockholders Committee. As of December 31, 2020, Artisan’s employees held 5,183,747 restricted shares of Class A common stock and all 4,457,958 outstanding shares of Class B common stock, all of which were subject to the agreement. APAM is dependent on cash generated by Holdings to fund any dividends. Generally, Holdings will make distributions to all of its partners, including APAM, based on the proportionate ownership each holds in Holdings. APAM will fund dividends to its stockholders from its proportionate share of those distributions after provision for its taxes and other obligations. APAM declared and paid the following dividends per share during the years ended December 31, 2020, 2019 and 2018: Type of Dividend Class of Stock For the Years Ended December 31, 2020 2019 2018 Quarterly Common Class A $ 2.79 $ 2.36 $ 2.40 Special Annual Common Class A $ 0.60 $ 1.03 $ 0.79 The following table summarizes APAM’s stock transactions for the years ended December 31, 2020, 2019 and 2018: Total Stock Outstanding Class A Common Stock (1) Class B Common Stock Class C Common Stock Balance at January 1, 2018 75,569,845 50,463,126 11,922,192 13,184,527 2018 Follow-On Offering — 644,424 (644,424) — Holdings Common Unit Exchanges — 1,590,611 (606,066) (984,545) Restricted Share Award Grants 1,517,724 1,517,724 — — Restricted Share Award Net Share Settlement (77,442) (77,442) — — Employee/Partner Terminations (67,255) (67,255) (2,026,453) 2,026,453 Balance at December 31, 2018 76,942,872 54,071,188 8,645,249 14,226,435 Holdings Common Unit Exchanges — 1,499,655 (841,885) (657,770) Restricted Share Award Grants 959,000 959,000 — — Restricted Share Award Net Share Settlement (82,729) (82,729) — — Employee/Partner Terminations (17,289) (17,289) — — Balance at December 31, 2019 77,801,854 56,429,825 7,803,364 13,568,665 2020 Follow-On Offering — 1,802,326 (1,777,326) (25,000) Holdings Common Unit Exchanges — 4,128,600 (1,535,275) (2,593,325) Delivery of Shares Underlying RSUs 24,233 24,233 — — Restricted Share Award Grants 916,085 916,085 — — Restricted Share Award Net Share Settlement (126,971) (126,971) — — Employee/Partner Terminations (43,091) (43,091) (32,805) 32,805 Balance at December 31, 2020 78,572,110 63,131,007 4,457,958 10,983,145 (1) There were 304,570, 297,891, and 246,581 restricted stock units outstanding at December 31, 2020, 2019, and 2018, respectively. In addition, there were 60,000 performance share units outstanding at December 31, 2020. Based on the current status of the market and performance conditions, the 60,000 unvested performance share units would ultimately result in the issuance of 90,000 shares of Class A common stock if all other vesting conditions were met. Restricted stock units and performance share units are not reflected in the table because they are not considered outstanding or issued stock. Each Class A, Class B, Class D and Class E common unit of Holdings (together with the corresponding share of Class B or Class C common stock) is exchangeable for one share of Class A common stock. The corresponding shares of Class B and Class C common stock are immediately canceled upon any such exchange. Upon termination of employment with Artisan, an employee-partner’s Class B common units are exchanged for Class E common units and the corresponding shares of Class B common stock are canceled. APAM issues the former employee-partner a number of shares of Class C common stock equal to the former employee-partner’s number of Class E common units. Class E common units are exchangeable for Class A common stock subject to the same restrictions and limitations on exchange applicable to the other common units of Holdings. Artisan Partners Holdings - Partners’ Equity Holdings makes distributions of its net income to the holders of its partnership units for income taxes as required under the terms of the partnership agreement and also makes additional distributions under the terms of the partnership agreement. The distributions are recorded in the financial statements on the declaration date, or on the payment date in lieu of a declaration date. Holdings’ partnership distributions for the years ended December 31, 2020, 2019 and 2018 were as follows: For the Years Ended December 31, 2020 2019 2018 Holdings Partnership Distributions to Limited Partners $ 85,805 $ 94,842 $ 103,434 Holdings Partnership Distributions to APAM 270,044 226,245 217,396 Total Holdings Partnership Distributions $ 355,849 $ 321,087 $ 320,830

Revenue from Contract with Cust

Revenue from Contract with Customer (Notes)	12 Months Ended
	Dec. 31, 2020
Revenue from Contract with Customer [Text Block]	Note 9. Revenue From Contracts with Customers The following table presents a disaggregation of investment advisory revenue by type and vehicle for the years ended December 31, 2020, 2019 and 2018: For the Years Ended December 31, 2020 2019 2018 Management fees Artisan Funds $ 503,642 $ 452,504 $ 487,041 Artisan Global Funds 33,531 32,332 35,007 Separate accounts (1) 347,729 309,502 303,631 Performance fees Separate accounts (1) 14,650 4,614 2,956 Artisan Global Funds 15 — — Total revenues (2) $ 899,567 $ 798,952 $ 828,635 (1) Separate account revenue consists of management fees and performance fees earned from vehicles other than Artisan Funds or Artisan Global Funds, which includes traditional separate accounts, Artisan-branded collective investment trusts and Artisan Private Funds. (2) All management fees and performance fees from consolidated investment products were eliminated upon consolidation and therefore are omitted from this table. The following table presents the balances of receivables related to contracts with customers: December 31, December 31, Customer Artisan Funds $ 5,227 $ 6,703 Artisan Global Funds 4,473 3,588 Separate accounts 87,971 69,413 Total receivables from contracts with customers $ 97,671 $ 79,704 Non-customer receivables 2,217 2,164 Accounts receivable $ 99,888 $ 81,868 Artisan Funds and Artisan Global Funds are billed on the last day of each month. Artisan Funds and Artisan Global Funds make payments on the same day the invoice is received for the majority of the invoiced amount. The remainder of the invoice is generally paid in the month following receipt of the invoice. Separate account clients are generally billed on a monthly or quarterly basis, with payments due within 30 days of billing. Artisan had no other contract assets or liabilities from contracts with customers as of December 31, 2020 and 2019.

Compensation and Benefits

Compensation and Benefits	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Compensation and Benefits	Note 10. Compensation and Benefits Total compensation and benefits consists of the following: For the Years Ended December 31, 2020 2019 2018 Salaries, incentive compensation and benefits (1) $ 399,325 $ 358,339 $ 360,287 Restricted share-based award compensation expense 36,493 42,117 52,879 Total compensation and benefits $ 435,818 $ 400,456 $ 413,166 (1) Excluding restricted share-based award compensation expense Incentive compensation Cash incentive compensation paid to members of Artisan’s investment teams and members of its distribution teams is generally based on formulas that are tied directly to revenues. These payments are made in the quarter following the quarter in which the incentive was earned with the exception of fourth quarter payments which are paid in the fourth quarter of the year. Cash incentive compensation paid to most other employees is discretionary and subjectively determined based on individual performance and Artisan’s overall results during the applicable year and is generally paid on an annual basis. Restricted share-based awards Artisan has registered 14,000,000 shares of Class A common stock for issuance under the 2013 Omnibus Incentive Compensation Plan (the “Plan”). Pursuant to the Plan, APAM has granted a combination of restricted stock awards, restricted stock units, and performance share units (collectively referred to as “restricted share-based awards” or "awards") of Class A common stock to employees. Standard Restricted Shares. Standard restricted shares are generally subject to a pro rata five-year service vesting condition. Career Shares. Career shares are generally subject to both (i) a pro rata five-year service vesting condition and (ii) a qualifying retirement (as defined in the award agreement). Franchise Shares . Like career shares, franchise shares are generally subject to both (i) a pro rata five-year service vesting condition and (ii) a qualifying retirement condition. In addition, franchise shares, which are only granted to investment team members, are subject to a Franchise Protection Clause, which provides that the number of shares that ultimately vest depends on whether certain conditions relating to client cash flows are met. If such conditions are not met, compensation cost will be reversed for any shares that do not vest. Performance Share Units (PSUs) . PSUs are generally subject to (i) a three-year service vesting condition, (ii) certain performance conditions related to the Company's operating margin and total shareholder return compared to a peer group during a three-year performance period, and (iii) for one-half of the PSUs eligible to vest at the end of the performance period, a qualifying retirement condition. The number of shares of Class A common stock that are ultimately issued in connection with each PSU award will depend upon the outcome of the performance, market and qualified retirement conditions. For the portion of a PSU award with a "performance condition" under ASC 718, expense is recognized over the service period if it is probable that the performance condition will be achieved. Compensation expense is recognized based on the estimated grant date fair value on a straight-line basis over the requisite service period of the award. The initial requisite service period is generally five years for restricted stock awards and restricted stock units, and three years for performance share units. The fair value of each award is equal to the market price of the Company's common stock on the grant date, except for performance share units with a "market condition" performance metric under ASC 718, which have a grant-date fair value based on a Monte Carlo valuation model. Unvested restricted share-based awards are subject to forfeiture. Grantees are generally entitled to dividends or dividend equivalents on unvested and vested awards. 4,634,924 shares of Class A common stock were reserved and available for issuance under the Plan as of December 31, 2020.During the year ended December 31, 2020, Artisan granted 916,085 restricted stock awards, 3,370 restricted stock units, and 60,000 performance share units of Class A common stock to employees of the Company. Total compensation expense associated with the 2020 grant is expected to be approximately $34.0 million. The following tables summarize the restricted share-based award activity for the years ended December 31, 2020, 2019 and 2018: Weighted-Average Grant Date Fair Value Restricted Stock Awards and Restricted Stock Units Unvested at January 1, 2018 $ 38.79 4,013,986 Granted 39.32 1,518,974 Forfeited 36.09 (67,255) Vested 44.50 (787,248) Unvested at January 1, 2019 $ 38.04 4,678,457 Granted 22.92 963,000 Forfeited 34.61 (17,289) Vested 39.21 (618,746) Unvested at January 1, 2020 $ 35.00 5,005,422 Granted 33.80 919,455 Forfeited 30.92 (43,091) Vested 32.59 (588,144) Unvested at December 31, 2020 $ 35.09 5,293,642 Weighted-Average Grant Date Fair Value Performance Share Units Unvested at January 1, 2020 $ — — Granted 52.45 60,000 Forfeited — — Vested — — Unvested at December 31, 2020 $ 52.45 60,000 Based on the current status of the market and performance conditions, the 60,000 unvested performance share units would ultimately result in the issuance of 90,000 shares of Class A common stock if all other vesting conditions were met. The aggregate vesting date fair value of awards that vested during the years ended December 31, 2020, 2019 and 2018 was approximately $21.0 million , $15.9 million, and $25.8 million, respectively. The unrecognized compensation expense for the unvested restricted stock awards and restricted stock units as of December 31, 2020 was $76.4 million with a weighted average recognition period of 3.1 years remaining. The unrecognized compensation expense for the unvested performance share units as of December 31, 2020 was $2.3 million with a weighted average recognition period of 3.2 years remaining. During the years ended December 31, 2020 and 2019, the Company withheld a total of 126,971 and 82,729 restricted shares, respectively, and paid $4.5 million and $2.1 million, respectively, as a result of net share settlements to satisfy employee tax withholding obligations. These net share settlements had the effect of shares repurchased and retired by the Company, as they reduced the number of shares outstanding.

Income Taxes and Related Paymen

Income Taxes and Related Payments	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes and Related Payments	Note 11. Income Taxes and Related Payments APAM is subject to U.S. federal, state and local income taxation on APAM’s allocable portion of Holdings’ income, as well as foreign income taxes payable by Holdings’ subsidiaries. Components of the provision for income taxes consist of the following: For the Years Ended December 31, 2020 2019 2018 Current: Federal $ 24,116 $ 13,609 $ 18,247 State and local 8,174 6,315 3,993 Foreign 515 529 495 Total 32,805 20,453 22,735 Deferred: Federal 27,110 22,310 22,218 State and local 880 (14,954) 2,645 Total 27,990 7,356 24,863 Income tax expense $ 60,795 $ 27,809 $ 47,598 The provision for income taxes differs from the amount of income tax computed by applying the applicable U.S. statutory federal income tax rate to income before provision for income taxes as follows: Years Ended December 31, 2020 2019 2018 U.S. federal statutory rate 21.0 % 21.0 % 21.0 % State and local taxes, net of federal tax effect 3.1 2.8 2.1 Excess tax benefits on share-based compensation (1.1) (0.7) (0.4) Rate benefit from the flow through entity (5.5) (6.7) (6.7) Change in state tax rate (1.1) (6.8) — Unrecognized tax benefits 0.2 0.6 — Other (0.1) 0.1 (0.2) Effective tax rate 16.5 % 10.3 % 15.8 % The effective tax rate includes a rate benefit attributable to the fact that, for the years ended December 31, 2020 , 2019 and 2018, approximately 24%, 31% and 33%, respectively, of Artisan Partners Holdings’ taxable earnings were attributable to other partners and not subject to corporate-level taxes. The effective tax rate was also reduced in the years ended December 31, 2019, and 2020 due to the remeasurement of existing deferred tax assets resulting from an increase in Artisan's state deferred income tax rates. The effective tax rate was also lower than the statutory rate due to dividends paid on unvested share-based awards. In connection with the IPO, APAM entered into two tax receivable agreements (“TRAs”). The first TRA, generally provides for the payment by APAM to a private equity fund (the “Pre-H&F Corp Merger Shareholder”) or its assignees of 85% of the applicable cash savings, if any, of U.S. federal, state and local income taxes that APAM actually realizes (or is deemed to realize in certain circumstances) as a result of (i) the tax attributes of the preferred units APAM acquired in the merger of a wholly-owned subsidiary of the Pre-H&F Corp Merger Shareholder into APAM in March 2013, (ii) net operating losses available as a result of the merger and (iii) tax benefits related to imputed interest. The second TRA generally provides for the payment by APAM to current or former limited partners of Holdings or their assignees of 85% of the applicable cash savings, if any, of U.S. federal, state and local income taxes that APAM actually realizes (or is deemed to realize in certain circumstances) as a result of (i) certain tax attributes of their partnership units sold to APAM or exchanged (for shares of Class A common stock, convertible preferred stock or other consideration) and that are created as a result of such sales or exchanges and payments under the TRAs and (ii) tax benefits related to imputed interest. Under both agreements, APAM generally will retain the benefit of the remaining 15% of the applicable tax savings. For purposes of the TRAs, cash savings of income taxes are calculated by comparing APAM’s actual income tax liability to the amount it would have been required to pay had it not been able to utilize any of the tax benefits subject to the TRAs, unless certain assumptions apply. The TRAs will continue in effect until all such tax benefits have been utilized or expired, unless APAM exercises its right to terminate the agreements or payments under the agreements are accelerated in the event that APAM materially breaches any of its material obligations under the agreements. The actual increase in tax basis, as well as the amount and timing of any payments under these agreements, will vary depending upon a number of factors, including the timing of sales or exchanges by the holders of limited partnership units, the price of the Class A common stock at the time of such sales or exchanges, whether such sales or exchanges are taxable, the amount and timing of the taxable income APAM generates in the future and the tax rate then applicable and the portion of APAM’s payments under the TRAs constituting imputed interest or depreciable basis or amortizable basis. Payments under the TRAs, if any, will be made pro rata among all TRA counterparties entitled to payments on an annual basis to the extent APAM has sufficient taxable income to utilize the increased depreciation and amortization charges and imputed interest deductions. Artisan expects to make one or more payments under the TRAs, to the extent they are required, prior to or within 125 days after APAM’s U.S. federal income tax return is filed for each fiscal year. Interest on the TRA payments will accrue at a rate equal to one-year LIBOR plus 100 basis points from the due date (without extension) of such tax return until such payments are made. Amounts payable under tax receivable agreements are estimates which may be impacted by factors, including but not limited to, expected tax rates, projected taxable income, and projected ownership levels and are subject to change. Changes in the estimates of amounts payable under tax receivable agreements are recorded as non-operating income (loss) in the Consolidated Statements of Operations. The change in the Company’s deferred tax assets related to the tax benefits described above and the change in corresponding amounts payable under the TRAs for the years ended December 31, 2020 and 2019 is summarized as follows: Deferred Tax Asset - Amortizable Basis Amounts Payable Under Tax Receivable Agreements December 31, 2018 $ 404,715 $ 369,355 2019 Holdings Common Unit Exchanges 13,424 11,410 Amortization (31,872) — Payments under TRAs (1) — (24,998) Change in estimate (2) 21,873 19,557 December 31, 2019 $ 408,140 $ 375,324 2020 Follow-On Offering 21,424 18,211 2020 Holdings Common Unit Exchanges 48,474 41,203 Amortization (34,686) — Payments under TRAs (1) — (26,943) Change in estimate (2) 3,602 4,673 December 31, 2020 $ 446,954 $ 412,468 (1) Interest payments of $60 thousand and $78 thousand were paid in addition to these TRA payments for the years ended December 31, 2020 and 2019, respectively. (2) Included in these totals are adjustments to the deferred tax assets for changes in the state deferred enacted tax rates of $3.7 million and $17.2 million for the years ended December 31, 2020 and 2019, respectively. Net deferred tax assets comprise the following: As of December 31, 2020 As of December 31, 2019 Deferred tax assets: Amortizable basis (1) $ 446,954 $ 408,140 Other (2) 35,107 27,757 Total deferred tax assets 482,061 435,897 Less: valuation allowance (3) — — Net deferred tax assets $ 482,061 $ 435,897 (1) Represents the unamortized step-up of tax basis and other tax attributes from the merger and partnership unit sales and exchanges described above. These future tax benefits are subject to the TRA agreements. (2) Represents the net deferred tax assets associated with the merger described above and other miscellaneous deferred tax assets. These future tax benefits are not subject to the TRA agreements. (3) Artisan assessed whether the deferred tax assets would be realizable and determined based on its history of taxable income that the benefits would more likely than not be realized. Accordingly, no valuation allowance is required. Accounting standards establish a minimum threshold for recognizing, and a process for measuring, the benefits of income tax return positions in financial statements. The change in the Company’s gross unrecognized tax benefits for the years ended December 31, 2020, 2019 and 2018 is summarized as follows: For the Years Ended December 31, 2020 2019 2018 Balance at beginning of year $ 1,667 $ — $ — Additions for tax positions of prior years 1,187 1,667 — Reductions for tax positions of prior years (613) — — Tax positions related to the current year 216 — — Settlements with taxing authorities (1,372) — — Expirations of statute of limitations — — — Balance at end of year $ 1,085 $ 1,667 $ — If recognized, $0.7 million and $1.6 million of the benefits recorded as of December 31, 2020 and 2019, respectively, would favorably impact the effective tax rate in future periods. The total amount of unrecognized tax benefits is currently not expected to significantly increase or decrease within the next twelve months. The Company recognizes interest and penalties related to unrecognized tax benefits as a component of the income tax provision. Accrued interest on uncertain tax positions was $0.2 million and $0.3 million as of December 31, 2020 and 2019, respectively, and is excluded from the unrecognized tax benefits total above. The gross unrecognized tax benefit is recorded within accounts payable, accrued expenses, and other in the Company's Consolidated Statements of Financial Condition. In the normal course of business, Artisan is subject to examination by federal and certain state, local and foreign tax regulators. As of December 31, 2020, U.S. federal income tax returns filed for the years 2017 through 2019 are open and therefore subject to examination. State, local and foreign income tax returns filed are generally subject to examination from 2016 to 2019.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Note 12. Earnings Per Share The computation of basic and diluted earnings per share for the years ended December 31, 2020, 2019 and 2018 were as follows: For the Years Ended December 31, Basic and Diluted Earnings Per Share 2020 2019 2018 Numerator: Net income attributable to APAM $ 212,617 $ 156,536 $ 158,309 Less: Allocation to participating securities 23,268 21,154 19,447 Net income available to common stockholders $ 189,349 $ 135,382 $ 138,862 Denominator: Basic weighted average shares outstanding 55,633,529 51,127,929 48,862,435 Dilutive effect of nonparticipating equity awards 4,393 — — Diluted weighted average shares outstanding 55,637,922 51,127,929 48,862,435 Earnings per share - Basic $ 3.40 $ 2.65 $ 2.84 Earnings per share - Diluted $ 3.40 $ 2.65 $ 2.84 Allocation to participating securities in the table above primarily represents dividends paid to holders of unvested restricted share-based awards, which reduces net income available to common stockholders. The Holdings limited partnership units are anti-dilutive primarily due to the impact of public company expenses. Unvested restricted share-based awards with non-forfeitable dividend rights during the vesting period are considered participating securities and are therefore anti-dilutive. The following table summarizes the weighted-average shares outstanding that are excluded from the calculation of diluted earnings per share because their effect would have been anti-dilutive: For the Years Ended December 31, Anti-Dilutive Weighted Average Shares Outstanding 2020 2019 2018 Holdings limited partnership units 17,885,335 21,827,809 23,351,440 Unvested restricted share-based awards 5,313,466 5,026,357 4,813,895 Total 23,198,801 26,854,166 28,165,335

Benefit Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2020
Retirement Benefits [Abstract]
Benefit Plans	Note 13. Benefit Plans Artisan has a 401(k) plan and similar foreign arrangements for its non-U.S. employees, under which it provides a matching contribution on employees’ pre-tax contributions. Expenses related to Artisan’s benefits plans for the years ended December 31, 2020, 2019 and 2018 were $7.8 million, $7.2 million and $6.9 million, respectively, and are included in compensation and benefits in the Consolidated Statements of Operations. Artisan provides an opportunity for eligible employees to participate in Artisan’s financial growth and success through phantom equity awards, pursuant to the Artisan Partners Holdings LP Phantom Equity Plan. The phantom equity awards provide participants the right to receive cash payments upon vesting based on the trading price of APAM’s Class A common stock. Awards made under the Phantom Equity Plan are liability awards and are subject to vesting on a pro-rata basis over five years. Award recipients must be employed by Artisan on the vesting date in order to receive payment. Expense related to the plan for the years ended December 31, 2020, 2019 and 2018 was $1.6 million, $0.9 million and $0.5 million, respectively, and is included in compensation and benefits in the Consolidated Statements of Operations. The liability at December 31, 2020 and 2019 for the plan was $1.5 million and $0.9 million, respectively.

Indemnifications

Indemnifications	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Indemnifications	Note 14. Indemnifications In the normal course of business, APAM enters into agreements that include indemnities in favor of third parties. Holdings has also agreed to indemnify APAM as its general partner, Artisan Investment Corporation (“AIC”) as its former general partner, the directors and officers of APAM, the directors and officers of AIC as its former general partner, the members of its former Advisory Committee, and its partners, directors, officers, employees and agents. Holdings’ subsidiaries may also have similar agreements to indemnify their respective general partner(s), directors, officers, directors and officers of their general partner(s), partners, members, employees, and agents. The Company’s maximum exposure under these arrangements is unknown, as this would involve future claims that may be made against the Company that have not yet occurred. APAM maintains insurance policies that may provide coverage against certain claims under these indemnities.

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Property and Equipment	Note 15. Property and Equipment The composition of property and equipment at December 31, 2020 and 2019 are as follows: As of December 31, 2020 2019 Computers and equipment $ 6,768 $ 7,105 Computer software 5,377 4,112 Furniture and fixtures 12,267 11,780 Leasehold improvements 49,038 48,119 Total Cost $ 73,450 $ 71,116 Less: Accumulated depreciation (37,576) (31,621) Property and equipment, net of accumulated depreciation $ 35,874 $ 39,495 Depreciation expense totaled $6.5 million , $6.8 million and $5.6 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Leases

Leases	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Leases of Lessee Disclosure	Note 16. Leases Operating lease expense was as follows: For the Years Ended December 31, Lease Type Classification 2020 2019 Parking leases Compensation and benefits $ 520 $ 519 Office leases (1) Occupancy 14,991 15,931 Variable lease cost (2) Occupancy 135 118 Short-term lease cost (2) Occupancy 343 369 Sublease income Occupancy (429) (286) Office equipment leases Communication and technology 281 305 Total operating lease expense $ 15,841 $ 16,956 (1) Office lease expense includes impairment charges of $0.9 million and $1.5 million for the years ended December 31, 2020 and 2019, respectively, related to the abandonment of a leased office space, as discussed below. (2) Variable and short-term lease costs are excluded from the measurement of operating lease liabilities. During the years ended December 31, 2020 and 2019, the Company recognized asset impairment losses of $0.9 million and $2.1 million, respectively, related to the abandonment of a leased office location. The losses are recorded in occupancy expense based on the present value of expected future cash flows. The $0.9 million impairment loss incurred for the year ended December 31, 2020 consists entirely of a lease asset impairment and the $2.1 million impairment loss incurred for the year ended December 31, 2019 consists of a $1.5 million lease asset impairment and a $0.6 million property impairment. Operating lease expense was $13.9 million for the year ended December 31, 2018 under ASC Topic 840. The table below presents the maturity of operating lease liabilities: As of December 31, 2020 2021 $ 16,749 2022 15,375 2023 13,800 2024 13,495 2025 13,450 Thereafter 37,026 Total undiscounted lease payments 109,895 Adjustment to discount to present value (17,224) Operating lease liabilities $ 92,671 As of December 31, 2020, there were not any leases that were signed but not yet commenced, and none of the options to extend lease terms were reasonably certain of being exercised. Other information related to leases was as follows: For the Years Ended December 31, 2020 2019 Weighted average discount rate 4.6 % 4.7 % Weighted average remaining lease term 7.4 years 8.1 years Operating cash flows for operating leases 16,546 14,183

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Note 17. Related Party Transactions Several of the current executive officers and directors of APAM, or entities associated with those individuals, are limited partners of Holdings. As a result, certain transactions (such as TRA payments) between Artisan and the limited partners of Holdings are considered to be related party transactions with respect to these persons. Holdings also makes estimated state tax payments on behalf of certain limited partners, including related parties. These payments are then netted from subsequent distributions to the limited partners. At December 31, 2020 and 2019, accounts receivables included $2.0 million and $0.9 million, respectively, of partnership tax reimbursements due from Holdings’ limited partners, including related parties. Affiliate transactions—Artisan Funds Artisan has an agreement to serve as the investment adviser to Artisan Funds, with which certain Artisan employees are affiliated. Under the terms of the agreement, which generally is reviewed and continued by the board of directors of Artisan Funds annually, a fee is paid to Artisan based on an annual percentage of the average daily net assets of each Artisan Fund ranging from 0.625% to 1.05%. Artisan has contractually agreed to reimburse for expenses incurred to the extent necessary to limit annualized ordinary operating expenses incurred by certain of the Artisan Funds to not more than a fixed percentage (ranging from 0.88% to 1.50%) of a fund’s average daily net assets. In addition, Artisan may voluntarily waive fees or reimburse any of the Artisan Funds for other expenses. The officers and directors of Artisan Funds who are affiliated with Artisan receive no compensation from the funds. Investment advisory fees for managing Artisan Funds and amounts reimbursed by Artisan for fees and expenses (including management fees) are as follows: For the Years Ended December 31, Artisan Funds 2020 2019 2018 Investment advisory fees (Gross of expense reimbursements) $ 504,204 $ 452,895 $ 487,460 Expense reimbursements $ 562 $ 391 $ 419 Affiliate transactions—Artisan Global Funds Artisan has an agreement to serve as the investment manager to Artisan Global Funds, with which certain Artisan employees are affiliated. Under the terms of these agreements, a fee is paid based on an annual percentage of the average daily net assets of each fund ranging from 0.75% to 1.85%. Artisan reimburses each sub-fund of Artisan Global Funds to the extent that sub-fund’s annual expenses, not including Artisan’s fee, exceed certain levels, which range from 0.10% to 0.20%. In addition, Artisan may voluntarily waive fees or reimburse any of the Artisan Global Funds for other expenses. The directors of Artisan Global Funds who are also employees of Artisan receive no compensation from the funds. Investment advisory fees for managing Artisan Global Funds and amounts reimbursed to Artisan Global Funds by Artisan are as follows: For the Years Ended December 31, Artisan Global Funds 2020 2019 2018 Investment advisory fees (Gross of expense reimbursements) $ 33,786 $ 32,577 $ 35,070 Elimination of fees from consolidated investment products (1) (58) (67) (62) Consolidated investment advisory fees (Gross of expense reimbursements) $ 33,728 $ 32,510 $ 35,008 Expense reimbursements $ 515 $ 514 $ 386 Elimination of expense reimbursements from consolidated investment products (1) (333) (336) (385) Consolidated expense reimbursements $ 182 $ 178 $ 1 (1) Investment advisory fees and expense reimbursements related to consolidated investment products are eliminated from revenue upon consolidation. Affiliate transactions - Artisan Private Funds Pursuant to written agreements, Artisan serves as the investment manager and acts as the general partner for certain Artisan Private Funds. Under the terms of these agreements, Artisan earns a management fee and for certain funds is entitled to receive either an allocation of profits or a performance-based fee. In addition, for a period of time following the formation of each private fund, Artisan has agreed to reimburse the fund to the extent that expenses, excluding Artisan’s management fee, performance fee and transaction related costs, exceed certain levels, which range from 0.10% to 1.00% per annum of the net assets of the fund. Artisan may also voluntarily waive fees or reimburse the funds for other expenses. Artisan and certain related parties, including employees, officers and members of the Company’s Board have invested in one or more of the funds and currently do not pay a management fee, performance fee or incentive allocation. Investment advisory fees for managing the Artisan Private Funds and amounts reimbursed to Artisan Private Funds by Artisan are as follows: For the Years Ended December 31, Artisan Private Funds 2020 2019 2018 Investment advisory fees (Gross of expense reimbursements) $ 7,570 $ 3,253 $ 1,298 Elimination of fees from consolidated investment products (1) (1,084) (369) (286) Consolidated investment advisory fees (Gross of expense reimbursements) $ 6,486 $ 2,884 $ 1,012 Expense reimbursements $ 405 $ 219 $ 206 Elimination of expense reimbursements from consolidated investment products (1) (258) (114) (206) Consolidated expense reimbursements $ 147 $ 105 $ — (1) Investment advisory fees and expense reimbursements related to consolidated investment products are eliminated from revenue upon consolidation.

Concentration of Credit Risk an

Concentration of Credit Risk and Significant Relationships	12 Months Ended
	Dec. 31, 2020
Risks and Uncertainties [Abstract]
Segment Reporting Disclosure	Note 18. Geographic Information Artisan generates a portion of its revenues from clients domiciled in various countries outside the United States. Revenues by geographic location based on client domicile for the years ended December 31, 2020, 2019 and 2018 were as follows: For the Years Ended December 31, 2020 2019 2018 U.S. $ 748,327 $ 666,650 $ 698,994 Non-U.S. 151,240 132,302 129,641 Total revenues $ 899,567 $ 798,952 $ 828,635 The following table sets forth Artisan’s long-lived assets by geographic area, which consist of net property and equipment and operating lease assets: As of December 31, 2020 2019 U.S. $ 111,171 $ 121,146 Non-U.S. 4,007 5,504 Total long-lived assets $ 115,178 $ 126,650

Litigation Matters

Litigation Matters	12 Months Ended
	Dec. 31, 2020
Litigation Matters [Abstract]
Litigation Matters	Note 19. Litigation Matters In the normal course of business, Artisan may be subject to various legal and administrative proceedings. Currently, there are no legal or administrative proceedings that management believes may have a material effect on Artisan’s consolidated financial position, cash flows or results of operations.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	Note 20. Subsequent Events Long-term incentive awards During the first quarter of 2021, the board of directors of APAM approved the grant of $79.4 million of long-term incentive awards consisting of $44.4 million of restricted share-based awards and $35.0 million of long-term cash awards to certain employees pursuant to the Company’s 2013 Omnibus Incentive Compensation Plan. The grant will be effective March 1, 2021. Compensation expense associated with these awards will be recognized on a straight-line basis over the requisite service period, which is generally five years. Expense for the cash awards will be variable based on the investment returns of the underlying equity investments that are linked to the cash awards. Distributions and dividends APAM, acting as the general partner of Artisan Partners Holdings, declared, effective February 2, 2021, a distribution by Artisan Partners Holdings of $60.4 million to holders of Artisan Partners Holdings partnership units, including APAM. The board of directors of APAM declared, effective February 2, 2021, a quarterly dividend of $0.97 per share of Class A common stock and a special annual dividend of $0.31 per share of Class A common stock. Both APAM common stock dividends, a total of $1.28 per share, are payable on February 26, 2021 to stockholders of record as of February 12, 2021.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation The accompanying consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and related rules and regulations of the SEC. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates or assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from these estimates or assumptions.
Principles of consolidation	Principles of consolidation Artisan’s policy is to consolidate all subsidiaries or other entities in which it has a controlling financial interest. The consolidation guidance requires an analysis to determine if an entity should be evaluated for consolidation using the voting interest entity (“VOE”) model or the variable interest entity (“VIE”) model. Under the VOE model, controlling financial interest is generally defined as a majority ownership of voting interests. Under the VIE model, controlling financial interest is defined as (i) the power to direct activities that most significantly impact the economic performance of the entity and (ii) the right to receive potentially significant benefits or the obligation to absorb potentially significant losses. Artisan generally consolidates VIEs in which it meets the power criteria and holds an equity ownership interest of greater than 10%. The consolidated financial statements include the accounts of APAM and all subsidiaries or other entities in which APAM has a direct or indirect controlling financial interest. All material intercompany balances have been eliminated in consolidation. Artisan serves as the investment adviser to Artisan Funds, Artisan Global Funds and Artisan Private Funds. Artisan Funds and Artisan Global Funds are corporate entities the business and affairs of which are managed by their respective boards of directors. The shareholders of the funds retain voting rights, including rights to elect and reelect members of their respective boards of directors. Each series of Artisan Funds is a VOE and is separately evaluated for consolidation under the VOE model. The shareholders of Artisan Global Funds lack simple majority liquidation rights, and as a result, each sub-fund of Artisan Global Funds is evaluated for consolidation under the VIE model. Artisan Private Funds are also evaluated for consolidation under the VIE model because third-party equity holders of the funds generally lack the ability to divest Artisan of its control of the funds.
Operating segments	Operating segments Artisan operates in one segment, the investment management industry. Artisan provides investment management services to separate accounts, mutual funds and other pooled investment vehicles. Management assesses the financial performance of these vehicles on a combined basis.
Cash and cash equivalents	Cash and cash equivalentsArtisan defines cash and cash equivalents as money market funds and other highly liquid investments with original maturities of 90 days or less. Cash and cash equivalents are stated at cost, which approximates fair value due to the short-term nature and liquidity of these financial instruments. For disclosure purposes, cash equivalents are categorized as Level 1 in the fair value hierarchy. Cash and cash equivalents are subject to credit risk and were primarily maintained in demand deposit accounts with financial institutions or treasury money market funds. Interest and dividends related to cash and cash equivalents is recorded in other investment gain (loss) in the Consolidated Statements of Operations.
Foreign currency translation	Foreign currency translation Assets and liabilities of foreign operations whose functional currency is not the U.S. dollar are translated at prevailing year-end exchange rates. Revenue and expenses of such foreign operations are translated at average exchange rates during the year. The net effect of the translation adjustment for foreign operations is included in other comprehensive income (loss) in the Consolidated Statements of Comprehensive Income. The cumulative effect of translation adjustments is included in accumulated other comprehensive income (loss) and noncontrolling interests - Artisan Partners Holdings in the Consolidated Statements of Financial Condition, based on period-end ownership levels.
Accounts receivable	Accounts receivable Accounts receivable are carried at invoiced amounts and consist primarily of investment advisory fees that have been earned, but not yet received from clients. Due to the short-term nature of the receivables, the carrying values of these assets approximate fair value. The accounts receivable balance does not include any allowance for doubtful accounts as Artisan believes all accounts receivable balances are fully collectible. There has not been any bad debt expense recorded for the years ended December 31, 2020, 2019 and 2018.
Investment securities	Investment securities Investment securities consist of nonconsolidated investments in shares of Artisan Funds, Artisan Global Funds, and Artisan Private Funds. Investments provide exposure to various risks, including price risk (the risk of a potential future decline in value of the investment) and foreign currency risk. Investments are carried at fair value based on net asset values as of the valuation date.
Property and equipment	Property and equipment Property and equipment are carried at cost, less accumulated depreciation. Depreciation is generally recognized on a straight-line basis over the estimated useful lives of the respective assets or the remaining lease term, whichever is shorter. The estimated useful lives of property and equipment as of December 31, 2020 are as follows: Property and Equipment Type Useful Life Computers and equipment Five years Computer software Three Furniture and fixtures Seven years Leasehold improvements Two Implementation costs incurred to develop or obtain internal-use software, including hosting arrangements, are capitalized and expensed on a straight-line basis over either the estimated useful life of the respective software or the term of the hosting arrangement. Property and equipment is tested for impairment when there is an indication that the carrying amount of an asset may not be recoverable. When an asset is determined to not be recoverable, the impairment loss is measured based on the excess, if any, of the carrying value of the asset over its fair value.
Restricted cash	Restricted cash Restricted cash represents cash that is restricted as collateral on a standby letter of credit related to a lease obligation.
Cash and cash equivalents of consolidated investment products	Cash and cash equivalents of consolidated investment productsCash and cash equivalents of consolidated investment products consist of highly liquid investments, including money market funds. See Note 6, “Variable Interest Entities and Consolidated Investment Products” for additional details.
Investment assets and liabilities of consolidated investment products	Investment assets and liabilities of consolidated investment productsInvestment assets and liabilities of consolidated investment products primarily consist of equity securities, fixed income securities and options. The carrying value of the investment assets and liabilities is also their fair value. Changes in the fair value of the investments are recognized as gains and losses in earnings. Equity securities are generally valued based upon closing market prices of the security on the principal exchange on which the security is traded. Fixed income securities include corporate bonds, convertible bonds and bank loans. Fixed income securities are generally valued based on the judgment of pricing vendors. Derivative assets and liabilities are generally comprised of put and call options on securities or indices. Put and call options are valued at the mid price (average of the bid price and ask price) as provided by the pricing vendor at the close of trading on the contract’s principal exchange. See Note 6, “Variable Interest Entities and Consolidated Investment Products” for additional details.
Redeemable noncontrolling interests	Redeemable noncontrolling interests Redeemable noncontrolling interests represent third-party investors’ ownership interest in consolidated investment products. Third-party investors in consolidated investment products generally have the right to withdraw their capital, subject to certain conditions. Noncontrolling interests of consolidated investment products that are currently redeemable or convertible for cash or other assets at the option of the holder are classified as temporary equity.
Revenue recognition	Revenue recognition Artisan’s investment advisory revenue is derived from contracts with customers in the form of investment management fees and performance fees. Investment Management Fees Investment management fees are generally computed as a percentage of assets under management and are recognized as revenue at the end of each distinct service period. Fees for providing investment advisory services are computed and billed in accordance with the underlying investment management agreements, which is generally on a monthly or quarterly basis. Investment management fees are presented net of cash rebates and expense reimbursements pursuant to contractual expense limitations of certain funds. Performance Fees A number of investment management agreements provide for performance-based fees or incentive allocations, collectively “performance fees”. Performance fees, if earned, are recognized upon completion of the contractually determined measurement period, which is generally quarterly or annually. Performance fees are not subject to claw back as a result of performance declines subsequent to the most recent measurement date. Revenue Recognition Artisan accounts for asset management services as a single performance obligation that is satisfied over time, using a time-based measure of progress to recognize revenue. Customer consideration is variable due to the uncertainty of the value of assets under management during each distinct service period. At the end of each period, Artisan records revenue for the actual amount of investment management fees earned for that period because the uncertainty has been resolved. Performance fees are subject to the uncertainty of market volatility, and as a result, the entire amount of the variable consideration related to performance fees is constrained until the end of each measurement period. At the end of the measurement period, revenue is recorded for the actual amount of performance fees earned during that period because the uncertainty has been resolved. For performance fees with annual measurement periods, revenue recognized in the current period relates to performance obligations that were partially satisfied in prior periods. Customer Rebates and Expense Reimbursements Artisan has contractually agreed to reimburse for expenses incurred to the extent necessary to limit annualized ordinary operating expenses incurred by certain funds to not more than a fixed percentage of the funds’ average daily net assets. Artisan may also contractually agree to pay fee rebates to certain investors in Artisan Global Funds. Artisan accounts for all reimbursements and rebates as a reduction of the transaction price (and, hence, of revenue) because the billing adjustments and payments represent consideration payable to customers and Artisan does not receive any distinct goods or services from the customers in exchange.
Unit and share-based compensation	Share-based compensation Share-based compensation expense is recognized based on the estimated grant date fair value on a straight-line basis over the requisite service period of the award. The initial requisite service period is generally five years for restricted share-based awards. The Company’s accounting policy is to record the impact of forfeitures when they occur.
Distribution fees	Distribution, servicing and marketing Artisan Funds has authorized certain financial services companies, broker-dealers, banks or other intermediaries, and in some cases other organizations designated by an authorized intermediary, to accept purchase, exchange, and redemption orders for shares of Artisan Funds on the funds’ behalf. Many intermediaries charge a fee for accounting and shareholder services provided to fund shareholders on the funds’ behalf. Those services typically include recordkeeping, transaction processing for shareholders’ accounts, and other services. The fee is either based on the number of accounts to which the intermediary provides such services or a percentage of the average daily value of fund shares held in such accounts. The funds pay a portion of such fees directly to the intermediaries, which are intended to compensate the intermediary for its provision of services of the type that would be provided by the funds’ transfer agent or other service providers if the shares were registered directly on the books of the funds’ transfer agent. Artisan pays the balance of those fees which includes compensation to the intermediary for its distribution, servicing and marketing of Artisan Funds shares. Artisan Global Funds also have arrangements pursuant to which Artisan is required to pay a portion of its investment management fee for distribution, servicing and marketing of Artisan Global Funds shares. Distribution, servicing and marketing fees paid by Artisan are presented as an operating expense as Artisan is the principal in its role as the primary obligor related to these services. Fees paid were as follows: For the Years Ended December 31, 2020 2019 2018 Fees paid with respect to Artisan Funds $ 21,320 $ 20,096 $ 22,822 Fees paid with respect to Global Funds 595 424 1,002 Other marketing expenses 2,397 2,650 2,737 Total distribution, servicing and marketing $ 24,312 $ 23,170 $ 26,561 Accrued fees to intermediaries were $4.2 million and $3.3 million as of December 31, 2020 and 2019, respectively, and are included in accounts payable, accrued expenses and other in the Consolidated Statements of Financial Condition.
Leases	Leases Artisan has lease commitments for office space, parking structures, and equipment, which are all accounted for as operating leases. Artisan records expense for operating leases on a straight-line basis over the lease term. Any lease incentives received by Artisan are also amortized on a straight-line basis over the lease term. Artisan assesses its contractual arrangements for the existence of a lease at inception. Operating leases with an initial term greater than 12 months are recorded as operating lease assets and operating lease liabilities in the Consolidated Statements of Financial Condition. Lease components (e.g. fixed rental payments) and non-lease components (e.g. fixed common-area maintenance costs) are generally accounted for as a single component. Operating lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. Operating lease assets are recognized at the lease commencement date based on the present value of lease payments over the lease term, adjusted for prepaid rent and the remaining balance of lease incentives received. Artisan's lease agreements generally do not provide an implicit interest rate, and therefore the present value calculation uses Artisan's estimated incremental borrowing rate. A market-based approach is used to estimate the incremental borrowing rate for each individual lease using observable market interest rates and Artisan specific inputs. The lease terms include periods covered by options to extend or exclude periods covered by options to terminate the lease when it is reasonably certain that Artisan will exercise that option.
Loss contingencies	Loss contingencies Artisan considers the assessment of loss contingencies as a significant accounting policy because of the significant uncertainty relating to the outcome of any potential legal actions and other claims and the difficulty of predicting the likelihood and range of the potential liability involved, coupled with the material impact on Artisan’s results of operations that could result from legal actions or other claims and assessments. Artisan recognizes estimated costs to defend as incurred. Potential loss contingencies are reviewed at least quarterly and are adjusted to reflect the impact and status of settlements, rulings, advice of counsel and other information pertinent to a particular matter. Significant differences could exist between the actual cost required to investigate, litigate and/or settle a claim or the ultimate outcome of a suit and management’s estimate. These differences could have a material impact on Artisan’s results of operations, financial position, or cash flows. Recoveries of losses are recognized in the Consolidated Statements of Operations when receipt is deemed probable. No loss contingencies were recorded at December 31, 2020, 2019 and 2018. Currently, there are no legal or administrative proceedings that management believes may have a material effect on Artisan’s consolidated financial position, cash flows or results of operations.
Income taxes	Income taxes Artisan accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the future tax consequences attributable to temporary differences between the financial statement carrying amounts and tax bases of assets and liabilities. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be realized or settled. Artisan recognizes a valuation allowance if it is more likely than not that some portion or all of the deferred tax assets will not be realized. Artisan accounts for uncertain income tax positions by recognizing the impact of a tax position in its consolidated financial statements when Artisan believes it is more likely than not that the tax position would not be sustained upon examination by the appropriate tax authorities based on the technical merits of the position.
Comprehensive income (loss)	Comprehensive income (loss) Total comprehensive income (loss) includes net income and other comprehensive income. Other comprehensive income (loss) consists of foreign currency translation.
Partnership distributions	Partnership distributions Artisan makes distributions to its partners for purposes of paying income taxes as required under the terms of Artisan Partners Holdings’ partnership agreement. Tax distributions are calculated utilizing the highest combined individual federal, state and local income tax rate among the various locations in which the partners, as a result of owning their interests in the partnership, are subject to tax, assuming maximum applicability of the phase-out of itemized deductions contained in the Internal Revenue Code for tax years prior to 2018. Artisan also makes additional distributions under the terms of the partnership agreement. Distributions are recorded in the financial statements on the declaration date.
Earnings per share	Earnings per share Basic earnings per share is computed under the two-class method by dividing income available to Class A common stockholders by the weighted average number of Class A common shares outstanding during the period. Unvested restricted share-based awards are excluded from the number of Class A common shares outstanding for the basic earnings per share calculation because the shares have not yet been earned by employees. Income available to Class A common stockholders is computed by reducing net income attributable to APAM by earnings (both distributed and undistributed) allocated to participating securities, according to their respective rights to participate in those earnings. Except for certain performance share units, unvested share-based awards are participating securities because the awards include non-forfeitable dividend rights during the vesting period. Class B and Class C common shares do not share in profits of APAM and therefore are not reflected in the calculations. Diluted earnings per share is computed under the more dilutive of the treasury stock method or the two-class method. The weighted average number of Class A common shares outstanding during the period is increased by the assumed conversion of nonparticipating unvested share-based awards into Class A common stock using the treasury stock method.
Recent accounting pronouncements	Recent accounting pronouncements Accounting standards adopted as of January 1, 2020 In August 2018, the FASB issued ASU 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract , which aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The capitalized implementation costs will be expensed over the term of the hosting arrangement. The Company adopted the new guidance on January 1, 2020. The Company capitalized $1.3 million of software implementation costs and recorded $0.1 million of related amortization expense during the year ended December 31, 2020. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses , which requires entities to measure credit losses on financial assets based on expected losses rather than incurred losses. The guidance was effective on January 1, 2020 and requires a modified retrospective approach to adoption. The adoption of this guidance did not have an impact on the consolidated financial statements.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Distribution And Marketing Fees	Fees paid were as follows: For the Years Ended December 31, 2020 2019 2018 Fees paid with respect to Artisan Funds $ 21,320 $ 20,096 $ 22,822 Fees paid with respect to Global Funds 595 424 1,002 Other marketing expenses 2,397 2,650 2,737 Total distribution, servicing and marketing $ 24,312 $ 23,170 $ 26,561

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Gain (Loss) on Securities [Line Items]
Gain (Loss) on Securities [Table Text Block]		Artisan’s investments in equity securities consist of investments in shares of Artisan Funds, Artisan Global Funds and Artisan Private Funds. Unrealized gains on investment securities held as of December 31, 2020, 2019 and 2018 were $0.7 million, $5.0 million, and $0.7 million, respectively.
Schedule of available-for-sale securities	The disclosures below include details of Artisan’s investments, excluding money market funds and consolidated investment products. Investments held by consolidated investment products are described in Note 6, “Variable Interest Entities and Consolidated Investment Products”. As of December 31, 2020 As of December 31, 2019 Investments in equity securities $ 2,807 $ 7,543 Investments in equity securities accounted for under the equity method 849 16,335 Total investment securities $ 3,656 $ 23,878

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair value hierarchy of assets and liabilities	The following provides the hierarchy of inputs used to derive fair value of Artisan’s assets and liabilities that are financial instruments as of December 31, 2020 and 2019: Assets and Liabilities at Fair Value Total NAV Practical Expedient (No Fair Value Level) Level 1 Level 2 Level 3 December 31, 2020 Assets Money market funds $ 25,855 $ — $ 25,855 $ — $ — Equity securities 3,656 57 3,599 — — December 31, 2019 Assets Money market funds $ 30,673 $ — $ 30,673 $ — $ — Equity securities 23,878 15,068 8,810 — —

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Schedule of borrowings	Artisan’s borrowings consist of the following as of December 31, 2020 and 2019: Maturity Outstanding Balance Interest Rate Per Annum Revolving credit agreement August 2022 — NA Senior notes Series C August 2022 90,000 5.82 % Series D August 2025 60,000 4.29 % Series E August 2027 50,000 4.53 % Total borrowings $ 200,000
Aggregate maturities of debt obligations	As of December 31, 2020, the aggregate maturities of debt obligations, based on their contractual terms, are as follows: 2021 $ — 2022 90,000 2023 — 2024 — 2025 60,000 Thereafter 50,000 Total $ 200,000

Variable Interest Entities an_2

Variable Interest Entities and Consolidated Investment Products (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring	The following tables present the fair value hierarchy levels of assets and liabilities held by CIPs measured at fair value as of December 31, 2020 and 2019: Assets and Liabilities at Fair Value Total Level 1 Level 2 Level 3 December 31, 2020 Assets Money market funds $ 7,822 $ 7,822 $ — $ — Equity securities - long position 83,960 83,027 933 — Fixed income instruments - long position 133,518 — 133,518 — Derivative assets 12,902 12,902 — — Liabilities Fixed income instruments - short position $ 14,978 $ — $ 14,978 $ — Derivative liabilities 753 566 187 — December 31, 2019 Assets Money market funds $ 5,005 $ 5,005 $ — $ — Equity securities - long position 9,933 9,933 — — Fixed income instruments - long position 96,681 — 96,681 — Derivative assets 122 22 100 — Liabilities Fixed income instruments - short position $ 6,005 $ — $ 6,005 $ — Derivative liabilities 181 — 181 —

Noncontrolling Interest - Hol_2

Noncontrolling Interest - Holdings (Tables)	12 Months Ended
	Dec. 31, 2020
Noncontrolling Interest [Abstract]
Result of Increased Equity Ownership Interest in Holdings	For the years ended December 31, 2020, 2019 and 2018, APAM’s equity ownership interest in Holdings has increased as a result of the following transactions: Holdings GP Units Limited Partnership Units Total APAM Ownership % Balance at January 1, 2018 50,463,126 25,106,719 75,569,845 67 % Issuance of APAM Restricted Shares, Net (1) 1,440,282 — 1,440,282 — % 2018 Follow-On Offering 644,424 (644,424) — 1 % Holdings Common Unit Exchanges 1,590,611 (1,590,611) — 2 % Forfeitures from Employee Terminations (1) (67,255) — (67,255) — % Balance at December 31, 2018 54,071,188 22,871,684 76,942,872 70 % Issuance of APAM Restricted Shares, Net (1) 876,271 — 876,271 — % Holdings Common Unit Exchanges 1,499,655 (1,499,655) — 3 % Forfeitures from Employee Terminations (1) (17,289) — (17,289) — % Balance at December 31, 2019 56,429,825 21,372,029 77,801,854 73 % Issuance of APAM Restricted Shares, Net (1) 789,114 — 789,114 — % Delivery of Shares Underlying RSUs (1) 24,233 — 24,233 — % 2020 Follow-On Offering 1,802,326 (1,802,326) — 2 % Holdings Common Unit Exchanges 4,128,600 (4,128,600) — 5 % Forfeitures from Employee Terminations (1) (43,091) — (43,091) — % Balance at December 31, 2020 63,131,007 15,441,103 78,572,110 80 % (1) The impact of the transaction on APAM’s ownership percentage was less than 1%.
Impact of the Reallocation of Equity	The reallocation of equity had the following impact on the Consolidated Statements of Financial Condition: Statement of Financial Condition For the Years Ended December 31, 2020 2019 Additional paid-in capital $ (2,544) $ (3,533) Noncontrolling interests - Artisan Partners Holdings 2,733 3,584 Accumulated other comprehensive income (loss) (189) (51) Net impact to financial condition $ — $ —

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Authorized and outstanding equity	APAM had the following authorized and outstanding equity as of December 31, 2020 and 2019, respectively: Outstanding Authorized December 31, 2020 December 31, 2019 Voting Rights (1) Economic Rights Common shares Class A, par value $0.01 per share 500,000,000 63,131,007 56,429,825 1 vote per share Proportionate Class B, par value $0.01 per share 200,000,000 4,457,958 7,803,364 1 vote per share None Class C, par value $0.01 per share 400,000,000 10,983,145 13,568,665 1 vote per share None (1) The Company’s employees to whom Artisan has granted equity have entered into a stockholders agreement with respect to all shares of APAM common stock they have acquired from the Company and any shares they may acquire from the Company in the future, pursuant to which they granted an irrevocable voting proxy to a Stockholders Committee. As of December 31, 2020, Artisan’s employees held 5,183,747 restricted shares of Class A common stock and all 4,457,958 outstanding shares of Class B common stock, all of which were subject to the agreement.
Dividends Declared	APAM declared and paid the following dividends per share during the years ended December 31, 2020, 2019 and 2018: Type of Dividend Class of Stock For the Years Ended December 31, 2020 2019 2018 Quarterly Common Class A $ 2.79 $ 2.36 $ 2.40 Special Annual Common Class A $ 0.60 $ 1.03 $ 0.79
Schedule of Stock by Class	The following table summarizes APAM’s stock transactions for the years ended December 31, 2020, 2019 and 2018: Total Stock Outstanding Class A Common Stock (1) Class B Common Stock Class C Common Stock Balance at January 1, 2018 75,569,845 50,463,126 11,922,192 13,184,527 2018 Follow-On Offering — 644,424 (644,424) — Holdings Common Unit Exchanges — 1,590,611 (606,066) (984,545) Restricted Share Award Grants 1,517,724 1,517,724 — — Restricted Share Award Net Share Settlement (77,442) (77,442) — — Employee/Partner Terminations (67,255) (67,255) (2,026,453) 2,026,453 Balance at December 31, 2018 76,942,872 54,071,188 8,645,249 14,226,435 Holdings Common Unit Exchanges — 1,499,655 (841,885) (657,770) Restricted Share Award Grants 959,000 959,000 — — Restricted Share Award Net Share Settlement (82,729) (82,729) — — Employee/Partner Terminations (17,289) (17,289) — — Balance at December 31, 2019 77,801,854 56,429,825 7,803,364 13,568,665 2020 Follow-On Offering — 1,802,326 (1,777,326) (25,000) Holdings Common Unit Exchanges — 4,128,600 (1,535,275) (2,593,325) Delivery of Shares Underlying RSUs 24,233 24,233 — — Restricted Share Award Grants 916,085 916,085 — — Restricted Share Award Net Share Settlement (126,971) (126,971) — — Employee/Partner Terminations (43,091) (43,091) (32,805) 32,805 Balance at December 31, 2020 78,572,110 63,131,007 4,457,958 10,983,145 (1) There were 304,570, 297,891, and 246,581 restricted stock units outstanding at December 31, 2020, 2019, and 2018, respectively. In addition, there were 60,000 performance share units outstanding at December 31, 2020. Based on the current status of the market and performance conditions, the 60,000 unvested performance share units would ultimately result in the issuance of 90,000 shares of Class A common stock if all other vesting conditions were met. Restricted stock units and performance share units are not reflected in the table because they are not considered outstanding or issued stock.
Distributions	Holdings’ partnership distributions for the years ended December 31, 2020, 2019 and 2018 were as follows: For the Years Ended December 31, 2020 2019 2018 Holdings Partnership Distributions to Limited Partners $ 85,805 $ 94,842 $ 103,434 Holdings Partnership Distributions to APAM 270,044 226,245 217,396 Total Holdings Partnership Distributions $ 355,849 $ 321,087 $ 320,830

Revenue from Contract with Cu_2

Revenue from Contract with Customer (Tables)	12 Months Ended
	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Table Text Block]	The following table presents a disaggregation of investment advisory revenue by type and vehicle for the years ended December 31, 2020, 2019 and 2018: For the Years Ended December 31, 2020 2019 2018 Management fees Artisan Funds $ 503,642 $ 452,504 $ 487,041 Artisan Global Funds 33,531 32,332 35,007 Separate accounts (1) 347,729 309,502 303,631 Performance fees Separate accounts (1) 14,650 4,614 2,956 Artisan Global Funds 15 — — Total revenues (2) $ 899,567 $ 798,952 $ 828,635 (1) Separate account revenue consists of management fees and performance fees earned from vehicles other than Artisan Funds or Artisan Global Funds, which includes traditional separate accounts, Artisan-branded collective investment trusts and Artisan Private Funds. (2) All management fees and performance fees from consolidated investment products were eliminated upon consolidation and therefore are omitted from this table.
Contract with Customer, Asset and Liability [Table Text Block]	The following table presents the balances of receivables related to contracts with customers: December 31, December 31, Customer Artisan Funds $ 5,227 $ 6,703 Artisan Global Funds 4,473 3,588 Separate accounts 87,971 69,413 Total receivables from contracts with customers $ 97,671 $ 79,704 Non-customer receivables 2,217 2,164 Accounts receivable $ 99,888 $ 81,868

Compensation and Benefits (Tabl

Compensation and Benefits (Tables)	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Components of Compensation Expense	Total compensation and benefits consists of the following: For the Years Ended December 31, 2020 2019 2018 Salaries, incentive compensation and benefits (1) $ 399,325 $ 358,339 $ 360,287 Restricted share-based award compensation expense 36,493 42,117 52,879 Total compensation and benefits $ 435,818 $ 400,456 $ 413,166 (1) Excluding restricted share-based award compensation expense
Restricted Share Activity	The following tables summarize the restricted share-based award activity for the years ended December 31, 2020, 2019 and 2018: Weighted-Average Grant Date Fair Value Restricted Stock Awards and Restricted Stock Units Unvested at January 1, 2018 $ 38.79 4,013,986 Granted 39.32 1,518,974 Forfeited 36.09 (67,255) Vested 44.50 (787,248) Unvested at January 1, 2019 $ 38.04 4,678,457 Granted 22.92 963,000 Forfeited 34.61 (17,289) Vested 39.21 (618,746) Unvested at January 1, 2020 $ 35.00 5,005,422 Granted 33.80 919,455 Forfeited 30.92 (43,091) Vested 32.59 (588,144) Unvested at December 31, 2020 $ 35.09 5,293,642

Income Taxes and Related Paym_2

Income Taxes and Related Payments (Tables)	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Components of the provision for income taxes	Components of the provision for income taxes consist of the following: For the Years Ended December 31, 2020 2019 2018 Current: Federal $ 24,116 $ 13,609 $ 18,247 State and local 8,174 6,315 3,993 Foreign 515 529 495 Total 32,805 20,453 22,735 Deferred: Federal 27,110 22,310 22,218 State and local 880 (14,954) 2,645 Total 27,990 7,356 24,863 Income tax expense $ 60,795 $ 27,809 $ 47,598
Reconciliation of effective tax rate	The provision for income taxes differs from the amount of income tax computed by applying the applicable U.S. statutory federal income tax rate to income before provision for income taxes as follows: Years Ended December 31, 2020 2019 2018 U.S. federal statutory rate 21.0 % 21.0 % 21.0 % State and local taxes, net of federal tax effect 3.1 2.8 2.1 Excess tax benefits on share-based compensation (1.1) (0.7) (0.4) Rate benefit from the flow through entity (5.5) (6.7) (6.7) Change in state tax rate (1.1) (6.8) — Unrecognized tax benefits 0.2 0.6 — Other (0.1) 0.1 (0.2) Effective tax rate 16.5 % 10.3 % 15.8 %
Schedule of DTA and TRA Payable	The change in the Company’s deferred tax assets related to the tax benefits described above and the change in corresponding amounts payable under the TRAs for the years ended December 31, 2020 and 2019 is summarized as follows: Deferred Tax Asset - Amortizable Basis Amounts Payable Under Tax Receivable Agreements December 31, 2018 $ 404,715 $ 369,355 2019 Holdings Common Unit Exchanges 13,424 11,410 Amortization (31,872) — Payments under TRAs (1) — (24,998) Change in estimate (2) 21,873 19,557 December 31, 2019 $ 408,140 $ 375,324 2020 Follow-On Offering 21,424 18,211 2020 Holdings Common Unit Exchanges 48,474 41,203 Amortization (34,686) — Payments under TRAs (1) — (26,943) Change in estimate (2) 3,602 4,673 December 31, 2020 $ 446,954 $ 412,468 (1) Interest payments of $60 thousand and $78 thousand were paid in addition to these TRA payments for the years ended December 31, 2020 and 2019, respectively. (2) Included in these totals are adjustments to the deferred tax assets for changes in the state deferred enacted tax rates of $3.7 million and $17.2 million for the years ended December 31, 2020 and 2019, respectively.
Components of deferred tax assets	Net deferred tax assets comprise the following: As of December 31, 2020 As of December 31, 2019 Deferred tax assets: Amortizable basis (1) $ 446,954 $ 408,140 Other (2) 35,107 27,757 Total deferred tax assets 482,061 435,897 Less: valuation allowance (3) — — Net deferred tax assets $ 482,061 $ 435,897 (1) Represents the unamortized step-up of tax basis and other tax attributes from the merger and partnership unit sales and exchanges described above. These future tax benefits are subject to the TRA agreements. (2) Represents the net deferred tax assets associated with the merger described above and other miscellaneous deferred tax assets. These future tax benefits are not subject to the TRA agreements. (3) Artisan assessed whether the deferred tax assets would be realizable and determined based on its history of taxable income that the benefits would more likely than not be realized. Accordingly, no valuation allowance is required.
Schedule of Unrecognized Tax Benefits Roll Forward	The change in the Company’s gross unrecognized tax benefits for the years ended December 31, 2020, 2019 and 2018 is summarized as follows: For the Years Ended December 31, 2020 2019 2018 Balance at beginning of year $ 1,667 $ — $ — Additions for tax positions of prior years 1,187 1,667 — Reductions for tax positions of prior years (613) — — Tax positions related to the current year 216 — — Settlements with taxing authorities (1,372) — — Expirations of statute of limitations — — — Balance at end of year $ 1,085 $ 1,667 $ — If recognized, $0.7 million and $1.6 million of the benefits recorded as of December 31, 2020 and 2019, respectively, would favorably impact the effective tax rate in future periods. The total amount of unrecognized tax benefits is currently not expected to significantly increase or decrease within the next twelve months. The Company recognizes interest and penalties related to unrecognized tax benefits as a component of the income tax provision. Accrued interest on uncertain tax positions was $0.2 million and $0.3 million as of December 31, 2020 and 2019, respectively, and is excluded from the unrecognized tax benefits total above. The gross unrecognized tax benefit is recorded within accounts payable, accrued expenses, and other in the Company's Consolidated Statements of Financial Condition.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Computation of basic and diluted net income (loss) per share	The computation of basic and diluted earnings per share for the years ended December 31, 2020, 2019 and 2018 were as follows: For the Years Ended December 31, Basic and Diluted Earnings Per Share 2020 2019 2018 Numerator: Net income attributable to APAM $ 212,617 $ 156,536 $ 158,309 Less: Allocation to participating securities 23,268 21,154 19,447 Net income available to common stockholders $ 189,349 $ 135,382 $ 138,862 Denominator: Basic weighted average shares outstanding 55,633,529 51,127,929 48,862,435 Dilutive effect of nonparticipating equity awards 4,393 — — Diluted weighted average shares outstanding 55,637,922 51,127,929 48,862,435 Earnings per share - Basic $ 3.40 $ 2.65 $ 2.84 Earnings per share - Diluted $ 3.40 $ 2.65 $ 2.84
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following table summarizes the weighted-average shares outstanding that are excluded from the calculation of diluted earnings per share because their effect would have been anti-dilutive: For the Years Ended December 31, Anti-Dilutive Weighted Average Shares Outstanding 2020 2019 2018 Holdings limited partnership units 17,885,335 21,827,809 23,351,440 Unvested restricted share-based awards 5,313,466 5,026,357 4,813,895 Total 23,198,801 26,854,166 28,165,335

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	The composition of property and equipment at December 31, 2020 and 2019 are as follows: As of December 31, 2020 2019 Computers and equipment $ 6,768 $ 7,105 Computer software 5,377 4,112 Furniture and fixtures 12,267 11,780 Leasehold improvements 49,038 48,119 Total Cost $ 73,450 $ 71,116 Less: Accumulated depreciation (37,576) (31,621) Property and equipment, net of accumulated depreciation $ 35,874 $ 39,495

Lease Commitments (Tables)

Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Lessee, Operating Lease, Liability, Maturity	The table below presents the maturity of operating lease liabilities: As of December 31, 2020 2021 $ 16,749 2022 15,375 2023 13,800 2024 13,495 2025 13,450 Thereafter 37,026 Total undiscounted lease payments 109,895 Adjustment to discount to present value (17,224) Operating lease liabilities $ 92,671
Lease, Cost	Operating lease expense was as follows: For the Years Ended December 31, Lease Type Classification 2020 2019 Parking leases Compensation and benefits $ 520 $ 519 Office leases (1) Occupancy 14,991 15,931 Variable lease cost (2) Occupancy 135 118 Short-term lease cost (2) Occupancy 343 369 Sublease income Occupancy (429) (286) Office equipment leases Communication and technology 281 305 Total operating lease expense $ 15,841 $ 16,956 (1) Office lease expense includes impairment charges of $0.9 million and $1.5 million for the years ended December 31, 2020 and 2019, respectively, related to the abandonment of a leased office space, as discussed below. (2) Variable and short-term lease costs are excluded from the measurement of operating lease liabilities.

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2020
Artisan Funds
Related Party Transaction [Line Items]
Schedule of related party transactions	Investment advisory fees for managing Artisan Funds and amounts reimbursed by Artisan for fees and expenses (including management fees) are as follows: For the Years Ended December 31, Artisan Funds 2020 2019 2018 Investment advisory fees (Gross of expense reimbursements) $ 504,204 $ 452,895 $ 487,460 Expense reimbursements $ 562 $ 391 $ 419
Artisan Global Funds
Related Party Transaction [Line Items]
Schedule of related party transactions	Investment advisory fees for managing Artisan Global Funds and amounts reimbursed to Artisan Global Funds by Artisan are as follows: For the Years Ended December 31, Artisan Global Funds 2020 2019 2018 Investment advisory fees (Gross of expense reimbursements) $ 33,786 $ 32,577 $ 35,070 Elimination of fees from consolidated investment products (1) (58) (67) (62) Consolidated investment advisory fees (Gross of expense reimbursements) $ 33,728 $ 32,510 $ 35,008 Expense reimbursements $ 515 $ 514 $ 386 Elimination of expense reimbursements from consolidated investment products (1) (333) (336) (385) Consolidated expense reimbursements $ 182 $ 178 $ 1 (1) Investment advisory fees and expense reimbursements related to consolidated investment products are eliminated from revenue upon consolidation.
Artisan Private Funds
Related Party Transaction [Line Items]
Schedule of related party transactions	For the Years Ended December 31, Artisan Private Funds 2020 2019 2018 Investment advisory fees (Gross of expense reimbursements) $ 7,570 $ 3,253 $ 1,298 Elimination of fees from consolidated investment products (1) (1,084) (369) (286) Consolidated investment advisory fees (Gross of expense reimbursements) $ 6,486 $ 2,884 $ 1,012 Expense reimbursements $ 405 $ 219 $ 206 Elimination of expense reimbursements from consolidated investment products (1) (258) (114) (206) Consolidated expense reimbursements $ 147 $ 105 $ — (1) Investment advisory fees and expense reimbursements related to consolidated investment products are eliminated from revenue upon consolidation.

Concentration of Credit Risk _2

Concentration of Credit Risk and Significant Relationships (Tables)	12 Months Ended
	Dec. 31, 2020
Risks and Uncertainties [Abstract]
Revenue from External Customers by Geographic Areas	Revenues by geographic location based on client domicile for the years ended December 31, 2020, 2019 and 2018 were as follows: For the Years Ended December 31, 2020 2019 2018 U.S. $ 748,327 $ 666,650 $ 698,994 Non-U.S. 151,240 132,302 129,641 Total revenues $ 899,567 $ 798,952 $ 828,635
Long-lived Assets by Geographic Areas	The following table sets forth Artisan’s long-lived assets by geographic area, which consist of net property and equipment and operating lease assets: As of December 31, 2020 2019 U.S. $ 111,171 $ 121,146 Non-U.S. 4,007 5,504 Total long-lived assets $ 115,178 $ 126,650

Nature of Business and Organi_2

Nature of Business and Organization (Details)	Dec. 31, 2020
Artisan Partners Holdings LP
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
APAM economic interest in Artisan Partners Holdings LP (as a percent)	80.00%

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2020USD ($)segmentvote	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Significant Accounting Policies [Line Items]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	10.00%
Number of Operating Segments | segment	1
Accrued fees to authorized agents	$ 4,200,000	$ 3,300,000
Loss Contingency Accrual	0
Depreciation expense	$ 6,500,000	$ 6,800,000	$ 5,600,000
Artisan Global Funds
Significant Accounting Policies [Line Items]
Number of Consolidated VIEs | vote	3
Artisan Private Funds
Significant Accounting Policies [Line Items]
Number of Consolidated VIEs | vote	3
Accounting Standards Update 2018-15 [Member]
Significant Accounting Policies [Line Items]
Capitalized Computer Software, Additions	$ 1,300,000
Depreciation expense	$ 100,000
Computers and equipment
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Furniture and fixtures
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	7 years
Minimum | Computer software
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Minimum | Leasehold improvements
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Maximum | Computer software
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Maximum | Leasehold improvements
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	14 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Distribution Fees (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies [Line Items]
Distribution, servicing and marketing	$ 24,312	$ 23,170	$ 26,561
Other marketing expenses	2,397	2,650	2,737
Artisan Funds
Significant Accounting Policies [Line Items]
Distribution, servicing and marketing	21,320	20,096	22,822
Artisan Global Funds
Significant Accounting Policies [Line Items]
Distribution, servicing and marketing	$ 595	$ 424	$ 1,002

Investment Securities - Schedul

Investment Securities - Schedule of available-for-sale securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Investments in equity securities	$ 2,807	$ 7,543
Investments in equity securities accounted for under the equity method	849	16,335
Total investment securities	3,656	23,878
Unrealized Gain (Loss) on Investments	$ 700	$ 5,000	$ 700

Fair Value Measurements - Fair

Fair Value Measurements - Fair value hierarchy of assets and liabilities (Details) - Recurring - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	$ 25,855	$ 30,673
Equity securities	3,656	23,878
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	25,855	30,673
Equity securities	3,599	8,810
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Equity securities	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Equity securities	0	0
Fair Value Measured at Net Asset Value Per Share [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Equity securities	$ 57	$ 15,068

Borrowings - Components of Borr

Borrowings - Components of Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Interest Expense, Debt	$ 10,300	$ 10,500	$ 10,600
Outstanding Balance	200,000
Senior notes | Series B
Debt Instrument [Line Items]
Outstanding Balance			$ 50,000
Interest Rate Per Annum			5.32%
Senior notes | Series C
Debt Instrument [Line Items]
Outstanding Balance	$ 90,000
Interest Rate Per Annum	5.82%
Senior notes | Series D
Debt Instrument [Line Items]
Outstanding Balance	$ 60,000
Interest Rate Per Annum	4.29%
Senior notes | Series E Senior Notes
Debt Instrument [Line Items]
Outstanding Balance	$ 50,000
Interest Rate Per Annum	4.53%
Revolving credit agreement
Debt Instrument [Line Items]
Outstanding Balance	$ 0

Borrowings - Additional Informa

Borrowings - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Outstanding Balance	$ 200,000
Interest Expense, Debt	10,300	$ 10,500	$ 10,600
Revolving credit agreement
Debt Instrument [Line Items]
Outstanding Balance	$ 0
Commitment fee percentage	0.175%
Revolving credit agreement | Minimum
Debt Instrument [Line Items]
Commitment fee percentage	0.175%
Revolving credit agreement | Maximum
Debt Instrument [Line Items]
Commitment fee percentage	0.50%
Revolving credit agreement | LIBOR adjusted by a statutory reserve percentage | Minimum
Debt Instrument [Line Items]
Spread on variable rate	1.50%
Revolving credit agreement | LIBOR adjusted by a statutory reserve percentage | Maximum
Debt Instrument [Line Items]
Spread on variable rate	2.50%
Revolving credit agreement | Federal funds effective rate
Debt Instrument [Line Items]
Spread on variable rate	0.50%
Revolving credit agreement | One-month LIBOR adjusted by a statutory reserve percentage
Debt Instrument [Line Items]
Spread on variable rate	1.00%
Revolving credit agreement | Margin based on leverage ratio | Minimum
Debt Instrument [Line Items]
Spread on variable rate	0.50%
Revolving credit agreement | Margin based on leverage ratio | Maximum
Debt Instrument [Line Items]
Spread on variable rate	1.50%
Level 2 | Recurring
Debt Instrument [Line Items]
Borrowings	$ 207,700
Series D | Senior notes
Debt Instrument [Line Items]
Interest Rate Per Annum	4.29%
Outstanding Balance	$ 60,000

Borrowings - Aggregate Maturiti

Borrowings - Aggregate Maturities of Debt Obligations (Details) $ in Thousands	Dec. 31, 2020USD ($)
Debt Disclosure [Abstract]
2021	$ 0
2022	90,000
2023	0
2024	0
2025	60,000
Thereafter	50,000
Borrowings	$ 200,000

Variable Interest Entities an_3

Variable Interest Entities and Consolidated Investment Products (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in equity securities accounted for under the equity method	$ 849	$ 16,335
Net CIP assets included in the table above	222,471	105,555
Net CIP assets not included in the table above	(69,763)	(28,509)
Total Net CIP Assets	152,708	77,046
Less: redeemable noncontrolling interests	93,753	43,110
Artisan's direct equity investment in CIPs	58,955	33,936
Less: Amounts reclassified to investment securities			$ 1,500
Investment securities	$ 3,656	23,878
Shares issued during period (in shares)	24,233
Variable Interest Entity, Primary Beneficiary
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 43,834	9,005
Investment securities	230,380	106,736
Investment-related Liabilities	15,731	6,186
Variable Interest Entity, Not Primary Beneficiary [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Artisan's direct equity investment in CIPs	800
Recurring | Variable Interest Entity, Primary Beneficiary | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	7,822	5,005
Recurring | Variable Interest Entity, Primary Beneficiary | Equity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	83,960	9,933
Recurring | Variable Interest Entity, Primary Beneficiary | Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	133,518	96,681
Investment-related Liabilities	14,978	6,005
Recurring | Variable Interest Entity, Primary Beneficiary | Derivative
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	12,902	122
Investment-related Liabilities	753	181
Fair Value, Inputs, Level 1 | Recurring | Variable Interest Entity, Primary Beneficiary | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	7,822	5,005
Fair Value, Inputs, Level 1 | Recurring | Variable Interest Entity, Primary Beneficiary | Equity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	83,027	9,933
Fair Value, Inputs, Level 1 | Recurring | Variable Interest Entity, Primary Beneficiary | Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	0
Investment-related Liabilities	0	0
Fair Value, Inputs, Level 1 | Recurring | Variable Interest Entity, Primary Beneficiary | Derivative
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	12,902	22
Investment-related Liabilities	566	0
Fair Value, Inputs, Level 2 | Recurring | Variable Interest Entity, Primary Beneficiary | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 2 | Recurring | Variable Interest Entity, Primary Beneficiary | Equity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	933	0
Fair Value, Inputs, Level 2 | Recurring | Variable Interest Entity, Primary Beneficiary | Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	133,518	96,681
Investment-related Liabilities	14,978	6,005
Fair Value, Inputs, Level 2 | Recurring | Variable Interest Entity, Primary Beneficiary | Derivative
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	100
Investment-related Liabilities	187	181
Fair Value, Inputs, Level 3 | Recurring | Variable Interest Entity, Primary Beneficiary | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 3 | Recurring | Variable Interest Entity, Primary Beneficiary | Equity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	0
Fair Value, Inputs, Level 3 | Recurring | Variable Interest Entity, Primary Beneficiary | Debt Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	0
Investment-related Liabilities	0	0
Fair Value, Inputs, Level 3 | Recurring | Variable Interest Entity, Primary Beneficiary | Derivative
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities	0	0
Investment-related Liabilities	$ 0	$ 0

Noncontrolling Interest - Hol_3

Noncontrolling Interest - Holdings - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Noncontrolling Interest [Line Items]
Shares issued during period (in shares)	24,233
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	$ 0	$ 0
Deferred Tax Assets | Additional Paid-in Capital
Noncontrolling Interest [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	$ (4,300)	$ (700)

Noncontrolling Interest - Hol_4

Noncontrolling Interest - Holdings - Result of Increased Equity Ownership Interest in Holdings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Noncontrolling Interest [Line Items]
Cumulative impact of changes in ownership	$ 0	$ 0
Stock Issued During Period, Shares, New Issues	(24,233)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	126,971	82,729	77,442
Artisan Partners Holdings LP
Noncontrolling Interest [Line Items]
APAM economic interest in Artisan Partners Holdings LP (as a percent)	80.00%
General Partnership Units
Noncontrolling Interest [Line Items]
Capital Units, Outstanding	63,131,007	56,429,825	54,071,188	50,463,126
Shares repurchased and retired during the period (shares)		(17,289)	(67,255)
Stock Issued During Period, Shares, Conversion of Units		(1,499,655)	(1,590,611)
Limited Partnership Units
Noncontrolling Interest [Line Items]
Capital Units, Outstanding	15,441,103	21,372,029	22,871,684	25,106,719
Shares repurchased and retired during the period (shares)	0	0	0
Stock Issued During Period, Shares, Conversion of Units	(4,128,600)	(1,499,655)	(1,590,611)
Capital Units
Noncontrolling Interest [Line Items]
Units of Partnership Interest, Amount	78,572,110	77,801,854	76,942,872	75,569,845
Shares repurchased and retired during the period (shares)	(43,091)	(17,289)	(67,255)
Stock Issued During Period, Shares, Conversion of Units	0	0	0
Noncontrolling Interest, Increase (Decrease) Ownership Interest, Exchange of Units, Percent	5.00%	3.00%	2.00%
Capital Units | Artisan Partners Holdings LP
Noncontrolling Interest [Line Items]
APAM economic interest in Artisan Partners Holdings LP (as a percent)	80.00%	73.00%	70.00%	67.00%
Class A Common Stock
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	(24,233)
Shares repurchased and retired during the period (shares)	(43,091)
Stock Issued During Period, Shares, Conversion of Units	(4,128,600)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	126,971	82,729	77,442
Unvested restricted share-based awards
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	(916,085)	(959,000)	(1,517,724)
Unvested restricted share-based awards | General Partnership Units
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	(789,114)	(876,271)	(1,440,282)
Unvested restricted share-based awards | Limited Partnership Units
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	0	0	0
Unvested restricted share-based awards | Capital Units
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	(789,114)	(876,271)	(1,440,282)
Change in APAM Economic Ownership Interest in Artisan Partners Holdings LP (as a percent)	0.00%	0.00%	0.00%
Unvested restricted share-based awards | Class A Common Stock
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	(916,085)	(959,000)	(1,517,724)
Capital Units
Noncontrolling Interest [Line Items]
Change in APAM Economic Ownership Interest in Artisan Partners Holdings LP (as a percent)	0.00%	0.00%	0.00%
Follow On Offering | General Partnership Units
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues			(644,424)
Follow On Offering | Limited Partnership Units
Noncontrolling Interest [Line Items]
Shares repurchased and retired during the period (shares)	(1,802,326)		(644,424)
Follow On Offering | Class A Common Stock
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	(1,802,326)
Capital Units | Unvested restricted share-based awards
Noncontrolling Interest [Line Items]
Change in APAM Economic Ownership Interest in Artisan Partners Holdings LP (as a percent)	0.00%
Capital Units | Follow On Offering
Noncontrolling Interest [Line Items]
Stock Issued During Period, Shares, New Issues	0		0
Change in APAM Economic Ownership Interest in Artisan Partners Holdings LP (as a percent)	2.00%		1.00%

Noncontrolling Interest - Hol_5

Noncontrolling Interest - Holdings - Impact of the Reallocation of Equity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	$ 0	$ 0	$ 0
Cumulative impact of changes in ownership	0	0
Additional paid-in capital
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	(2,544)	(3,533)	(4,878)
Noncontrolling interests - Artisan Partners Holdings
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	2,733	3,584	4,923
Accumulated other comprehensive income (loss)
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Cumulative impact of changes in ownership of Artisan Partners Holdings LP, net of tax	$ (189)	$ (51)	$ (45)

Stockholders' Equity (Details)

Stockholders' Equity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)vote$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017shares
Class of Stock [Line Items]
Outstanding	78,572,110	77,801,854	76,942,872	75,569,845
Common Class A, dividends paid (in dollars per share) | $ / shares	$ 3.39	$ 3.39	$ 3.19
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	304,570	297,891	246,581
Artisan Partners Holdings LP
Class of Stock [Line Items]
Holdings Partnership Distributions to Limited Partners | $	$ 85,805	$ 94,842	$ 103,434
General Partners' Capital Account, Period Distribution Amount | $	270,044	226,245	217,396
Total Holdings Partnership Distributions | $	$ 355,849	$ 321,087	$ 320,830
Quarterly cash dividend
Class of Stock [Line Items]
Common Class A, dividends paid (in dollars per share) | $ / shares	$ 2.79	$ 2.36	$ 2.40
Special annual dividend
Class of Stock [Line Items]
Common Class A, dividends paid (in dollars per share) | $ / shares	$ 0.60	$ 1.03	$ 0.79
Class A Common Stock
Class of Stock [Line Items]
Authorized	500,000,000
Outstanding	63,131,007	56,429,825	54,071,188	50,463,126
Common stock votes per share | vote	1
Class B Common Stock
Class of Stock [Line Items]
Authorized	200,000,000
Outstanding	4,457,958	7,803,364	8,645,249	11,922,192
Common stock votes per share | vote	1
Class C Common Stock
Class of Stock [Line Items]
Authorized	400,000,000
Outstanding	10,983,145	13,568,665	14,226,435	13,184,527
Common stock votes per share | vote	1

Stockholders' Equity Share Acti

Stockholders' Equity Share Activity by Class (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	(24,233)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	(126,971)	(82,729)	(77,442)
Outstanding	78,572,110	77,801,854	76,942,872	75,569,845
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	304,570	297,891	246,581
Class A Common Stock
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	(24,233)
Shares repurchased and retired during the period (shares)	(43,091)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	(126,971)	(82,729)	(77,442)
Outstanding	63,131,007	56,429,825	54,071,188	50,463,126
Class B Common Stock
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	(1,777,326)		(644,424)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	0	0	0
Outstanding	4,457,958	7,803,364	8,645,249	11,922,192
Class C Common Stock
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	(25,000)		0
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	0	0	0
Outstanding	10,983,145	13,568,665	14,226,435	13,184,527
Common Stock
Class of Stock [Line Items]
Shares repurchased and retired during the period (shares)	(43,091)	(17,289)	(67,255)
Common Stock | Class A Common Stock
Class of Stock [Line Items]
Shares repurchased and retired during the period (shares)		(17,289)	(67,255)
Common Stock | Class B Common Stock
Class of Stock [Line Items]
Shares repurchased and retired during the period (shares)	(32,805)	0	(2,026,453)
Common Stock | Class C Common Stock
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	(32,805)	0	(2,026,453)
Common Stock | Class A Common Stock
Class of Stock [Line Items]
Shares repurchased and retired during the period (shares)		(1,499,655)	(1,590,611)
Common Stock | Class B Common Stock
Class of Stock [Line Items]
Shares repurchased and retired during the period (shares)	(1,535,275)	(841,885)	(606,066)
Common Stock | Class C Common Stock
Class of Stock [Line Items]
Shares repurchased and retired during the period (shares)	(2,593,325)	(657,770)	(984,545)
Unvested restricted share-based awards
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	(916,085)	(959,000)	(1,517,724)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	5,293,642	5,005,422	4,678,457	4,013,986
Unvested restricted share-based awards | Class A Common Stock
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	(916,085)	(959,000)	(1,517,724)
Unvested restricted share-based awards | Class B Common Stock
Class of Stock [Line Items]
Shares repurchased and retired during the period (shares)	0	0	0
Unvested restricted share-based awards | Class C Common Stock
Class of Stock [Line Items]
Shares repurchased and retired during the period (shares)	0	0	0
Performance Shares
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	60,000	0
Performance Shares | Pro Forma
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	90,000

Revenue from Contract with Cu_3

Revenue from Contract with Customer (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Contract with Customer, Asset, after Allowance for Credit Loss	$ 0
Revenue from Contracts with Customers	899,567	$ 798,952	$ 828,635
Total receivables from contracts with customers	97,671	79,704
Non-customer receivables	2,217	2,164
Accounts receivable	99,888	81,868
Artisan Funds
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	5,227	6,703
Artisan Global Funds
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	4,473	3,588
Separate Accounts [Member]
Disaggregation of Revenue [Line Items]
Total receivables from contracts with customers	87,971	69,413
Management fees
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	884,902	794,338	825,679
Management fees | Artisan Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	503,642	452,504	487,041
Management fees | Artisan Global Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	33,531	32,332	35,007
Management fees | Separate Accounts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	347,729	309,502	303,631
Performance fees
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	14,665	4,614	2,956
Performance fees | Artisan Global Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	15	0	0
Performance fees | Separate Accounts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	$ 14,650	$ 4,614	$ 2,956

Compensation and Benefits - Com

Compensation and Benefits - Components of expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 21,000	$ 15,900	$ 25,800
Salaries, incentive compensation and benefits	399,325	358,339	360,287
Restricted share-based award compensation expense	36,493	42,117	52,879
Total compensation and benefits	$ 435,818	400,456	413,166
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	4,634,924
Stock Issued During Period, Value, Restricted Stock Award, Gross	$ 0	$ 0	$ 0
Compensation and Benefits	Note 10. Compensation and Benefits Total compensation and benefits consists of the following: For the Years Ended December 31, 2020 2019 2018 Salaries, incentive compensation and benefits (1) $ 399,325 $ 358,339 $ 360,287 Restricted share-based award compensation expense 36,493 42,117 52,879 Total compensation and benefits $ 435,818 $ 400,456 $ 413,166 (1) Excluding restricted share-based award compensation expense Incentive compensation Cash incentive compensation paid to members of Artisan’s investment teams and members of its distribution teams is generally based on formulas that are tied directly to revenues. These payments are made in the quarter following the quarter in which the incentive was earned with the exception of fourth quarter payments which are paid in the fourth quarter of the year. Cash incentive compensation paid to most other employees is discretionary and subjectively determined based on individual performance and Artisan’s overall results during the applicable year and is generally paid on an annual basis. Restricted share-based awards Artisan has registered 14,000,000 shares of Class A common stock for issuance under the 2013 Omnibus Incentive Compensation Plan (the “Plan”). Pursuant to the Plan, APAM has granted a combination of restricted stock awards, restricted stock units, and performance share units (collectively referred to as “restricted share-based awards” or "awards") of Class A common stock to employees. Standard Restricted Shares. Standard restricted shares are generally subject to a pro rata five-year service vesting condition. Career Shares. Career shares are generally subject to both (i) a pro rata five-year service vesting condition and (ii) a qualifying retirement (as defined in the award agreement). Franchise Shares . Like career shares, franchise shares are generally subject to both (i) a pro rata five-year service vesting condition and (ii) a qualifying retirement condition. In addition, franchise shares, which are only granted to investment team members, are subject to a Franchise Protection Clause, which provides that the number of shares that ultimately vest depends on whether certain conditions relating to client cash flows are met. If such conditions are not met, compensation cost will be reversed for any shares that do not vest. Performance Share Units (PSUs) . PSUs are generally subject to (i) a three-year service vesting condition, (ii) certain performance conditions related to the Company's operating margin and total shareholder return compared to a peer group during a three-year performance period, and (iii) for one-half of the PSUs eligible to vest at the end of the performance period, a qualifying retirement condition. The number of shares of Class A common stock that are ultimately issued in connection with each PSU award will depend upon the outcome of the performance, market and qualified retirement conditions. For the portion of a PSU award with a "performance condition" under ASC 718, expense is recognized over the service period if it is probable that the performance condition will be achieved. Compensation expense is recognized based on the estimated grant date fair value on a straight-line basis over the requisite service period of the award. The initial requisite service period is generally five years for restricted stock awards and restricted stock units, and three years for performance share units. The fair value of each award is equal to the market price of the Company's common stock on the grant date, except for performance share units with a "market condition" performance metric under ASC 718, which have a grant-date fair value based on a Monte Carlo valuation model. Unvested restricted share-based awards are subject to forfeiture. Grantees are generally entitled to dividends or dividend equivalents on unvested and vested awards. 4,634,924 shares of Class A common stock were reserved and available for issuance under the Plan as of December 31, 2020.During the year ended December 31, 2020, Artisan granted 916,085 restricted stock awards, 3,370 restricted stock units, and 60,000 performance share units of Class A common stock to employees of the Company. Total compensation expense associated with the 2020 grant is expected to be approximately $34.0 million. The following tables summarize the restricted share-based award activity for the years ended December 31, 2020, 2019 and 2018: Weighted-Average Grant Date Fair Value Restricted Stock Awards and Restricted Stock Units Unvested at January 1, 2018 $ 38.79 4,013,986 Granted 39.32 1,518,974 Forfeited 36.09 (67,255) Vested 44.50 (787,248) Unvested at January 1, 2019 $ 38.04 4,678,457 Granted 22.92 963,000 Forfeited 34.61 (17,289) Vested 39.21 (618,746) Unvested at January 1, 2020 $ 35.00 5,005,422 Granted 33.80 919,455 Forfeited 30.92 (43,091) Vested 32.59 (588,144) Unvested at December 31, 2020 $ 35.09 5,293,642 Weighted-Average Grant Date Fair Value Performance Share Units Unvested at January 1, 2020 $ — — Granted 52.45 60,000 Forfeited — — Vested — — Unvested at December 31, 2020 $ 52.45 60,000 Based on the current status of the market and performance conditions, the 60,000 unvested performance share units would ultimately result in the issuance of 90,000 shares of Class A common stock if all other vesting conditions were met. The aggregate vesting date fair value of awards that vested during the years ended December 31, 2020, 2019 and 2018 was approximately $21.0 million , $15.9 million, and $25.8 million, respectively. The unrecognized compensation expense for the unvested restricted stock awards and restricted stock units as of December 31, 2020 was $76.4 million with a weighted average recognition period of 3.1 years remaining. The unrecognized compensation expense for the unvested performance share units as of December 31, 2020 was $2.3 million with a weighted average recognition period of 3.2 years remaining. During the years ended December 31, 2020 and 2019, the Company withheld a total of 126,971 and 82,729 restricted shares, respectively, and paid $4.5 million and $2.1 million, respectively, as a result of net share settlements to satisfy employee tax withholding obligations. These net share settlements had the effect of shares repurchased and retired by the Company, as they reduced the number of shares outstanding.
2020 Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Value, Restricted Stock Award, Gross	$ 34,000
Unvested restricted share-based awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 76,400
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	3 years 1 month 6 days
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	5 years
Granted in Period, Number of Shares	919,455	963,000	1,518,974
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	5,293,642	5,005,422	4,678,457	4,013,986
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 2,300
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	3 years 2 months 12 days
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	3 years
Granted in Period, Number of Shares	60,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	60,000	0
Performance Shares | Pro Forma
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	90,000
Share-based Payment Arrangement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted in Period, Number of Shares	916,085
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted in Period, Number of Shares	3,370

Compensation and Benefits - Res

Compensation and Benefits - Restricted Share Activity and Class B Awards Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	4,634,924
Restricted Stock Awards and Restricted Stock Units
Restricted share-based award compensation expense	$ 36,493	$ 42,117	$ 52,879
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 21,000	$ 15,900	$ 25,800
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	126,971	82,729	77,442
Taxes paid related to employee net share settlement	$ (4,530)	$ (2,078)	$ (2,564)
Unrecognized Tax Benefits, Income Tax Penalties Accrued	$ 200	$ 300
Unvested restricted share-based awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at beginning of period	5,005,422	4,678,457	4,013,986
Granted in Period, Number of Shares	919,455	963,000	1,518,974
Forfeited in Period, Number of Shares	(43,091)	(17,289)	(67,255)
Vested in Period, Number of Shares	(588,144)	(618,746)	(787,248)
Unvested at end of period	5,293,642	5,005,422	4,678,457
Weighted-Average Grant Date Fair Value
Unvested at beginning of period (in dollars per share)	$ 35	$ 38.04	$ 38.79
Granted in Period, Weighted Average Grant Date Fair Value (in dollars per share)	33.80	22.92	39.32
Forfeited in Period, Weighted Average Grant Date Fair Value (in dollars per share)	30.92	34.61	36.09
Vested in Period, Weighted Average Grant Date Fair Value (in dollars per share)	32.59	39.21	44.50
Unvested at end of period (in dollars per share)	$ 35.09	$ 35	$ 38.04
Restricted Stock Awards and Restricted Stock Units
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 76,400
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	3 years 1 month 6 days
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at beginning of period	0
Granted in Period, Number of Shares	60,000
Forfeited in Period, Number of Shares	0
Vested in Period, Number of Shares	0
Unvested at end of period	60,000	0
Weighted-Average Grant Date Fair Value
Unvested at beginning of period (in dollars per share)	$ 0
Granted in Period, Weighted Average Grant Date Fair Value (in dollars per share)	52.45
Forfeited in Period, Weighted Average Grant Date Fair Value (in dollars per share)	0
Vested in Period, Weighted Average Grant Date Fair Value (in dollars per share)	0
Unvested at end of period (in dollars per share)	$ 52.45	$ 0
Restricted Stock Awards and Restricted Stock Units
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 2,300
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	3 years 2 months 12 days
General Partnership Units [Member] | Unvested restricted share-based awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at end of period	5,183,747
Class A Common Stock
Restricted Stock Awards and Restricted Stock Units
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	126,971	82,729	77,442

Compensation and Benefits - Pre

Compensation and Benefits - Pre-Offering Related Compensation (Details) - Unvested restricted share-based awards - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeited (in dollars per share)	$ 30.92	$ 34.61	$ 36.09
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 76.4
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	3 years 1 month 6 days

Income Taxes and Related Paym_3

Income Taxes and Related Payments - Components of provision for income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	$ 24,116	$ 13,609	$ 18,247
State and local	8,174	6,315	3,993
Foreign	515	529	495
Total	32,805	20,453	22,735
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	27,110	22,310	22,218
State and local	880	(14,954)	2,645
Total	27,990	7,356	24,863
Income tax expense	$ 60,795	$ 27,809	$ 47,598

Unrecognized Tax Benefits Rollf

Unrecognized Tax Benefits Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits	$ 1,085	$ 1,667	$ 0	$ 0
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	1,187	1,667	0
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	613	0	0
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	216	0	0
Tax Adjustments, Settlements, and Unusual Provisions	(1,372)	0	0
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	$ 0	$ 0	$ 0

Income Taxes and Related Paym_4

Income Taxes and Related Payments - Reconciliation of effective tax rate (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	21.00%	21.00%	21.00%
State and local taxes, net of federal tax effect	3.10%	2.80%	2.10%
Excess tax benefits on share-based compensation	(1.10%)	(0.70%)	(0.40%)
Rate benefit from the flow through entity	(5.50%)	(6.70%)	(6.70%)
Change in state tax rate	(1.10%)	(6.80%)	0.00%
Unrecognized tax benefits	0.20%	0.60%	0.00%
Other	(0.10%)	0.10%	(0.20%)
Effective tax rate	16.50%	10.30%	15.80%

Income Taxes and Related Paym_5

Income Taxes and Related Payments - Components of deferred tax assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Amortizable basis	$ 446,954	$ 408,140	$ 404,715
2018 Follow-On Offering	64,087	30,967	20,303
Deferred Tax Assets, Exchanges	48,474	13,424
Amortization	(34,686)	(31,872)
Other Tax Expense (Benefit)	3,602	21,873
Amounts payable under tax receivable agreements	412,468	375,324	369,355
Establishment of Amounts Payable Under Tax Receivable Agreements	41,203	11,410
Tax Receivable Agreement Payments	26,943	24,998	36,111
Net (Gain) Loss On The Tax Receivable Agreements Other	4,673	19,557
Interest Paid, Including Capitalized Interest, Operating and Investing Activities	60	78
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	3,700	17,200
Deferred tax assets:
Amortizable basis	446,954	408,140	$ 404,715
Other	35,107	27,757
Total deferred tax assets	482,061	435,897
Less: valuation allowance	0	0
Net deferred tax assets	482,061	$ 435,897
Follow On Offering
2018 Follow-On Offering	21,424
Establishment of Amounts Payable Under Tax Receivable Agreements	$ 18,211

Income Taxes and Related Paym_6

Income Taxes and Related Payments - Additional information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Approximate percentage of earnings not subject to income taxes	24.00%	31.00%	33.00%
Tax Receivable Agreement Percentage Savings Required to be Paid to Shareholders	85.00%
Tax Receivable Agreement Percentage To Be Retained by Entity	15.00%
Tax Receivable Agreement Payment Period	125 days
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 700	$ 1,600
Unrecognized Tax Benefits, Income Tax Penalties Accrued	$ 200	$ 300
London Interbank Offered Rate (LIBOR) [Member]
Tax Receivable, Basis Point Spread on Variable Rate, Basis Points	100

Earnings Per Share - Computatio

Earnings Per Share - Computation of basic and diluted net income (loss) per share (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net income attributable to APAM	$ 212,617	$ 156,536	$ 158,309
Less allocation to participating securities	23,268	21,154	19,447
Net income (loss) available to common stockholders	$ 189,349	$ 135,382	$ 138,862
Basic weighted average shares outstanding	55,633,529	51,127,929	48,862,435
Dilutive effect of nonparticipating equity awards	4,393	0	0
Diluted weighted average number of common shares outstanding	55,637,922	51,127,929	48,862,435

Earnings Per Share - Antidiluti

Earnings Per Share - Antidilutive securities excluded from the computation of net income per share (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	23,198,801	26,854,166	28,165,335
Capital Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	17,885,335	21,827,809	23,351,440
Unvested restricted share-based awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5,313,466	5,026,357	4,813,895

Benefit Plans (Details)

Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Retirement Benefits [Abstract]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 7.8	$ 7.2	$ 6.9
Share-based compensation	1.6	0.9	$ 0.5
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Compensation Liability, Current and Noncurrent	$ 1.5	$ 0.9

Property and Equipment (Details

Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total Cost	$ 73,450	$ 71,116
Less: Accumulated depreciation	(37,576)	(31,621)
Property and equipment, net of accumulated depreciation	35,874	39,495
Depreciation expense	6,500	6,800	$ 5,600
Computers and equipment
Property, Plant and Equipment [Line Items]
Total Cost	$ 6,768	7,105
Property, Plant and Equipment, Useful Life	5 years
Computer software
Property, Plant and Equipment [Line Items]
Total Cost	$ 5,377	4,112
Computer software | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Computer software | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total Cost	$ 12,267	11,780
Property, Plant and Equipment, Useful Life	7 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total Cost	$ 49,038	$ 48,119
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	14 years
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	2 years

Lease Commitments (Details)

Lease Commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Commitments [Line Items]
Operating Lease, Cost		$ (15,841)	$ (16,956)
Short-term Lease, Cost		343	369
Sublease Income		281	305
Asset impairment		$ 871	$ 2,107	$ 0
Rent expense				$ 13,900
Lessee, Operating Lease, Lease Not Yet Commenced, Option To Extend, Value	$ 0
Operating Lease, Weighted Average Discount Rate, Percent	4.70%	4.60%	4.70%
Operating Lease, Weighted Average Remaining Lease Term	8 years 1 month 6 days	7 years 4 months 24 days	8 years 1 month 6 days
Operating Lease, Payments		$ 16,546	$ 14,183
Occupancy
Other Commitments [Line Items]
Operating Lease, Cost		(14,991)	(15,931)
Variable Lease, Cost		135	118
Occupancy | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations
Other Commitments [Line Items]
Operating Lease, Cost		(900)
Asset impairment		900	2,100
Occupancy | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Abandonment [Member]
Other Commitments [Line Items]
Operating Lease, Cost			(1,500)
Impairment of Long-Lived Assets to be Disposed of			600
Compensation and Benefits
Other Commitments [Line Items]
Operating Lease, Cost		(520)	(519)
Communication and Technology
Other Commitments [Line Items]
Operating Lease, Cost		$ (429)	$ (286)

Lease Commitments - Lease Matur

Lease Commitments - Lease Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
2021	$ 16,749
2022	15,375
2023	13,800
2024	13,495
2025	13,450
Thereafter	37,026
Total undiscounted lease payments	109,895
Adjustment to discount to present value	(17,224)
Operating lease liabilities	$ 92,671	$ 101,154

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties	$ 2,000	$ 900
Artisan Funds
Related Party Transaction [Line Items]
Investment management fees	504,204	452,895	$ 487,460
Fee waiver / expense reimbursement	562	391	419
Artisan Global Funds
Related Party Transaction [Line Items]
Investment management fees	33,728	32,510	35,008
Fee waiver / expense reimbursement	$ 182	178	1
Artisan Global Funds | Minimum
Related Party Transaction [Line Items]
Management fee percentage of average daily net assets	0.75%
Management fee threshold for reimbursement, percentage average daily net assets	0.10%
Artisan Global Funds | Maximum
Related Party Transaction [Line Items]
Management fee percentage of average daily net assets	1.85%
Management fee threshold for reimbursement, percentage average daily net assets	0.20%
Artisan Funds
Related Party Transaction [Line Items]
Annualized operating expenses maximum percentage of average daily net assets	0.88%
Annualized operating expenses minimum percentage of average daily assets	1.50%
Artisan Funds | Minimum
Related Party Transaction [Line Items]
Management fee percentage of average daily net assets	0.625%
Artisan Funds | Maximum
Related Party Transaction [Line Items]
Management fee percentage of average daily net assets	1.05%
Artisan Global Funds
Related Party Transaction [Line Items]
Investment management fees	$ 6,486	2,884	1,012
Fee waiver / expense reimbursement	$ 147	105	0
Artisan Global Funds | Minimum
Related Party Transaction [Line Items]
Management fee threshold for reimbursement, percentage average daily net assets	0.10%
Artisan Global Funds | Maximum
Related Party Transaction [Line Items]
Management fee threshold for reimbursement, percentage average daily net assets	1.00%
Subsidiaries [Member] | Artisan Global Funds
Related Party Transaction [Line Items]
Investment management fees	$ 33,786	32,577	35,070
Fee waiver / expense reimbursement	515	514	386
Subsidiaries [Member] | Artisan Global Funds
Related Party Transaction [Line Items]
Investment management fees	7,570	3,253	1,298
Fee waiver / expense reimbursement	405	219	206
Consolidation, Eliminations [Member] | Artisan Global Funds
Related Party Transaction [Line Items]
Investment management fees	(58)	(67)	(62)
Fee waiver / expense reimbursement	(333)	(336)	(385)
Consolidation, Eliminations [Member] | Artisan Global Funds
Related Party Transaction [Line Items]
Investment management fees	(1,084)	(369)	(286)
Fee waiver / expense reimbursement	$ (258)	$ (114)	$ (206)

Concentration of Credit Risk _3

Concentration of Credit Risk and Significant Relationships (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Concentration Risk [Line Items]
Revenue from Contracts with Customers	$ 899,567	$ 798,952	$ 828,635
Total long-lived assets	115,178	126,650
U.S.
Concentration Risk [Line Items]
Revenue from Contracts with Customers	748,327	666,650	698,994
Total long-lived assets	111,171	121,146
Non-U.S.
Concentration Risk [Line Items]
Revenue from Contracts with Customers	151,240	132,302	$ 129,641
Total long-lived assets	$ 4,007	$ 5,504

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands	Feb. 02, 2021	Jan. 26, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Subsequent Event [Line Items]
Stock Issued During Period, Value, Restricted Stock Award, Gross			$ 0	$ 0	$ 0
Subsequent Event
Subsequent Event [Line Items]
Distribution Made to Limited Partner, Cash Distributions Declared	$ 60,400
Stock Issued During Period, Value, Restricted Stock Award, Gross		$ 44,400
Subsequent Event | Long Term Incentive
Subsequent Event [Line Items]
Long-Term Incentive Awards, Costs Not Yet Recognized		79,400
Subsequent Event | Cash Award
Subsequent Event [Line Items]
Long-Term Cash Awards, Costs Not Yet Recognized [Line Items]		$ 35,000
Subsequent Event | Class A Common Stock
Subsequent Event [Line Items]
Dividends declared (in dollars per share)	$ 1.28
Subsequent Event | Quarterly cash dividend | Class A Common Stock
Subsequent Event [Line Items]
Dividends declared (in dollars per share)	0.97
Subsequent Event | Special annual dividend | Class A Common Stock
Subsequent Event [Line Items]
Dividends declared (in dollars per share)	$ 0.31