SEI Investments (SEIC) 10-Q 25 Apr 22 2022 Q1 Quarterly report Financial data

Cover page

Cover page - shares	3 Months Ended
	Mar. 31, 2022	Apr. 21, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	0-10200
Entity Registrant Name	SEI INVESTMENTS COMPANY
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	23-1707341
Entity Address, Address Line One	1 Freedom Valley Drive
Entity Address, City or Town	Oaks
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19456
City Area Code	610
Local Phone Number	676-1000
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	SEIC
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		137,265,550
Entity Central Index Key	0000350894
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false
Current Fiscal Year End Date	--12-31

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 907,831	$ 831,407
Restricted cash	351	351
Receivables from investment products	57,584	59,036
Receivables, net of allowance for doubtful accounts of $1,388 and $1,602	437,844	441,609
Securities owned	31,258	28,267
Other current assets	46,115	43,559
Total Current Assets	1,480,983	1,404,229
Property and Equipment, net of accumulated depreciation of $417,041 and $409,248	180,458	178,869
Operating Lease Right-of-Use Assets	31,024	33,614
Capitalized Software, net of accumulated amortization of $558,861 and $545,307	236,481	243,446
Available for Sale and Equity Securities	134,717	129,541
Investments in Affiliated Funds, at fair value	7,270	6,916
Investment in Unconsolidated Affiliate	52,778	107,918
Goodwill	117,434	117,232
Intangible Assets, net of accumulated amortization of $20,969 and $17,716	65,339	68,782
Deferred Contract Costs	35,847	36,236
Deferred Income Taxes	2,706	2,983
Other Assets, net	27,569	24,936
Total Assets	2,372,606	2,354,702
Current Liabilities:
Accounts payable	8,037	10,312
Accrued liabilities	250,468	324,382
Current portion of long-term operating lease liabilities	11,219	11,328
Deferred revenue	15,422	9,721
Total Current Liabilities	285,146	355,743
Borrowings Under Revolving Credit Facility	30,000	40,000
Long-term Income Taxes Payable	803	803
Deferred Income Taxes	36,561	48,876
Long-term Operating Lease Liabilities	24,997	27,639
Other Long-term Liabilities	22,016	20,878
Total Liabilities	399,523	493,939
Commitments and Contingencies
Shareholders' Equity:
Common stock, $0.01 par value, 750,000 shares authorized; 137,219 and 138,449 shares issued and outstanding	1,372	1,384
Capital in excess of par value	1,266,320	1,246,608
Retained earnings	733,572	632,614
Accumulated other comprehensive loss, net	(28,181)	(19,843)
Total Shareholders' Equity	1,973,083	1,860,763
Total Liabilities and Shareholders' Equity	$ 2,372,606	$ 2,354,702

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Receivables, allowance for doubtful accounts	$ 1,388	$ 1,602
Property and equipment, accumulated depreciation	417,041	409,248
Capitalized Software, accumulated amortization	558,861	545,307
Intangible Assets, accumulated amortization	$ 20,969	$ 17,716
Shareholders' Equity:
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	137,219,000	138,449,000
Common stock, shares outstanding	137,219,000	138,449,000

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues:
Revenues	$ 581,443	$ 455,686
Expenses:
Subadvisory, distribution and other asset management costs	53,128	50,164
Software royalties and other information processing costs	7,547	5,742
Compensation, benefits and other personnel	160,484	137,221
Stock-based compensation	10,566	9,752
Consulting, outsourcing and professional fees	62,491	54,340
Data processing and computer related	29,816	25,721
Facilities, supplies and other costs	17,627	17,248
Amortization	16,887	14,352
Depreciation	8,098	8,309
Total expenses	366,644	322,849
Income from operations	214,799	132,837
Net (loss) gain from investments	(489)	332
Interest and dividend income	848	945
Interest expense	(250)	(123)
Equity in earnings of unconsolidated affiliate	32,459	33,350
Income before income taxes	247,367	167,341
Income taxes	57,059	37,871
Net income	$ 190,308	$ 129,470
Basic earnings per common share (in USD per share)	$ 1.38	$ 0.90
Shares used to compute basic earnings per share (in shares)	137,935	143,201
Diluted earnings per common share (in USD per share)	$ 1.36	$ 0.89
Shares used to compute diluted earnings per share (in shares)	139,712	145,306
Asset management, administration and distribution fees
Revenues:
Revenues	$ 394,097	$ 367,646
Information processing and software servicing fees
Revenues:
Revenues	$ 187,346	$ 88,040

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 190,308	$ 129,470
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(4,558)	1,685
Unrealized loss on investments:
Unrealized losses during the period, net of income taxes of $1,186 and $160	(3,969)	(543)
Reclassification adjustment for losses realized in net income, net of income taxes of $(57) and $(74)	189	253
Total other comprehensive (loss) income, net of tax	(8,338)	1,395
Comprehensive income	$ 181,970	$ 130,865

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Unrealized gains during the period, taxes	$ 1,186	$ 160
Reclassification adjustment for losses realized in net income, taxes	$ (57)	$ (74)

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Capital In Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance, (in shares) at Dec. 31, 2020		143,396
Beginning balance at Dec. 31, 2020	$ 1,739,907	$ 1,434	$ 1,190,001	$ 565,270	$ (16,798)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	129,470			129,470
Other comprehensive income (loss)	1,395				1,395
Purchase and retirement of common stock, (in shares)		(1,152)
Purchase and retirement of common stock	(66,939)	$ (11)	(6,839)	(60,089)
Issuance of common stock under employee stock purchase plan, (in shares)		24
Issuance of common stock under employee stock purchase plan	1,139		1,139
Issuance of common stock upon exercise of stock options, (in shares)		433
Issuance of common stock upon exercise of stock options	14,384	$ 4	14,380
Stock-based compensation	9,752		9,752
Ending balance, (in shares) at Mar. 31, 2021		142,701
Ending balance at Mar. 31, 2021	$ 1,829,108	$ 1,427	1,208,433	634,651	(15,403)
Beginning balance, (in shares) at Dec. 31, 2021	138,449	138,449
Beginning balance at Dec. 31, 2021	$ 1,860,763	$ 1,384	1,246,608	632,614	(19,843)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	190,308			190,308
Other comprehensive income (loss)	(8,338)				(8,338)
Purchase and retirement of common stock, (in shares)		(1,713)
Purchase and retirement of common stock	(100,090)	$ (17)	(10,723)	(89,350)
Issuance of common stock under employee stock purchase plan, (in shares)		23
Issuance of common stock under employee stock purchase plan	1,168		1,168
Issuance of common stock upon exercise of stock options, (in shares)		460
Issuance of common stock upon exercise of stock options	18,706	$ 5	18,701
Stock-based compensation	$ 10,566		10,566
Ending balance, (in shares) at Mar. 31, 2022	137,219	137,219
Ending balance at Mar. 31, 2022	$ 1,973,083	$ 1,372	$ 1,266,320	$ 733,572	$ (28,181)

Consolidated Condensed Statemen

Consolidated Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income	$ 190,308	$ 129,470
Adjustments to reconcile net income to net cash provided by operating activities (See Note 1)	70,119	7,103
Net cash provided by operating activities	260,427	136,573
Cash flows from investing activities:
Additions to property and equipment	(9,283)	(4,218)
Additions to capitalized software	(6,589)	(6,360)
Purchases of marketable securities	(49,333)	(51,524)
Prepayments and maturities of marketable securities	35,397	42,446
Sales of marketable securities	48	0
Other investing activities	(2,000)	(11,000)
Net cash used in investing activities	(31,760)	(30,656)
Cash flows from financing activities:
Repayments under revolving credit facility	(10,000)	0
Payment of contingent consideration	(868)	(702)
Purchase and retirement of common stock	(100,155)	(71,206)
Proceeds from issuance of common stock	19,874	15,523
Payment of dividends	(55,503)	(53,127)
Net cash used in financing activities	(146,652)	(109,512)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(5,591)	1,551
Net increase (decrease) in cash, cash equivalents and restricted cash	76,424	(2,044)
Cash, cash equivalents and restricted cash, beginning of period	831,758	787,727
Cash, cash equivalents and restricted cash, end of period	$ 908,182	$ 785,683

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Nature of Operations SEI Investments Company (the Company), a Pennsylvania corporation, provides comprehensive platforms, services and infrastructure–encompassing technology, operational, and investment management services–to help wealth managers, financial advisors, investment managers, family offices, institutional and private investors create and manage wealth. Investment processing platforms provide technologies and business process outsourcing services for wealth managers and investment advisors. These solutions include investment advisory, client relationship, and other technology-enabled capabilities for the front office; administrative and investment services for the middle office; and accounting and processing services for the back office. Revenues from investment processing platforms are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations. Investment operations platforms provide business process outsourcing services for investment managers and asset owners. These platforms support a broad range of traditional and alternative investments and provide technology-enabled information analytics and investor capabilities for the front office; administrative and investment services for the middle office; and fund administration and accounting services for the back office. Revenues from investment operations platforms are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations. Investment management platforms provide comprehensive solutions for managing personal and institutional wealth. These platforms include goals-based investment strategies; SEI-sponsored investment products, including mutual funds, collective investment products, alternative investment portfolios and separately managed accounts (SMA); and other market-specific advice, technology and operational components. These platforms are offered to wealth managers as part of a complete goals-based investment program for their end-investors. For institutional investors, the Company provides Outsourced Chief Investment Officer (OCIO) solutions that include investment management programs, as well as advisory and administrative services. Revenues from investment management platforms are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations. Basis of Presentation The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America. Certain financial information and accompanying note disclosure normally included in the Company’s Annual Report on Form 10-K have been condensed or omitted. The interim financial information is unaudited but reflects all adjustments (consisting of only normal recurring adjustments) which are, in the opinion of management, necessary for a fair statement of financial position of the Company as of March 31, 2022, the results of operations for the three months ended March 31, 2022 and 2021, and cash flows for the three-months ended March 31, 2022 and 2021. These interim Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and the Notes to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. There have been no significant changes in significant accounting policies during the three months ended March 31, 2022 as compared to the significant accounting policies described in the Company's Annual Report on Form 10-K for the year ended December 31, 2021. Variable Interest Entities The Company or its affiliates have created numerous investment products for its clients in various types of legal entity structures. The Company serves as the Manager, Administrator and Distributor for these investment products and may also serve as the Trustee for some of the investment products. The Company receives asset management, distribution, administration and custodial fees for these services. Clients are the equity investors and participate in proportion to their ownership percentage in the net income or loss and net capital gains or losses of the products, and, on liquidation, will participate in proportion to their ownership percentage in the remaining net assets of the products after satisfaction of outstanding liabilities. The Company has concluded that it is not the primary beneficiary of the entities and, therefore, is not required to consolidate any of the pooled investment vehicles for which it receives asset management, distribution, administration and custodial fees under the VIE model. The Company is a party to expense limitation agreements with certain SEI-sponsored money market funds subject to Rule 2a-7 of the Investment Company Act of 1940 which establish a maximum level of ordinary operating expenses incurred by the fund in any fiscal year including, but not limited to, fees of the administrator or its affiliates. Under the terms of these agreements, the Company waived $11,185 and $10,233 in fees during the three months ended March 31, 2022 and 2021, respectively. Revenue Recognition Revenue is recognized when the transfer of control of promised goods or services under the terms of a contract with customers are satisfied in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those promised goods or services. Certain portions of the Company’s revenues involve a third party in providing goods or services to its customers. In such circumstances, the Company must determine whether the nature of its promise to the customer is to provide the underlying goods or services (the Company is the principal in the transaction and reports the transaction gross) or to arrange for a third party to provide the underlying goods or services (the entity is the agent in the transaction and reports the transaction net). See Note 13 for related disclosures regarding revenue recognition. Cash and Cash Equivalents Cash and cash equivalents includes $299,843 and $290,256 at March 31, 2022 and December 31, 2021, respectively, primarily invested in SEI-sponsored open-ended money market mutual funds. Restricted Cash Restricted cash includes $250 at March 31, 2022 and December 31, 2021 segregated for regulatory purposes related to trade-execution services conducted by SEI Investments (Europe) Limited. Restricted cash also includes $101 at March 31, 2022 and December 31, 2021 segregated in special reserve accounts for the benefit of customers of the Company’s broker-dealer subsidiary, SEI Investments Distribution Co. (SIDCO), in accordance with certain rules established by the Securities and Exchange Commission (SEC) for broker-dealers. Capitalized Software The Company capitalized $6,589 and $6,360 of software development costs during the three months ended March 31, 2022 and 2021, respectively. The Company's software development costs primarily relate to significant enhancements to the SEI Wealth Platform SM (SWP). As of March 31, 2022, the net book value of SWP was $230,363 . The net book value includes $31,108 of capitalized software development costs in-progress associated with future releases of SWP. Capitalized software development costs in-progress associated with future releases of SWP were $29,253 as of December 31, 2021. SWP has a weighted average remaining life of 10.2 years. Amortization expense for SWP was $12,104 and $11,923 during the three months ended March 31, 2022 and 2021, respectively. Earnings per Share The calculations of basic and diluted earnings per share for the three months ended March 31, 2022 and 2021 are: Three Months Ended March 31, 2022 2021 Net income $ 190,308 $ 129,470 Shares used to compute basic earnings per common share 137,935,000 143,201,000 Dilutive effect of stock options 1,777,000 2,105,000 Shares used to compute diluted earnings per common share 139,712,000 145,306,000 Basic earnings per common share $ 1.38 $ 0.90 Diluted earnings per common share $ 1.36 $ 0.89 During the three months ended March 31, 2022 and 2021, employee stock options to purchase 12,218,000 and 11,715,000 shares of common stock with an average exercise price of $60.28 and $57.99, respectively, were outstanding but not included in the computation of diluted earnings per common share. These options for the three month periods were not included in the computation of diluted earnings per common share because either the performance conditions have not been satisfied or would not have been satisfied if the reporting date was the end of the contingency period or the options' exercise price was greater than the average market price of the Company’s common stock and the effect on diluted earnings per common share would have been anti-dilutive. Recently Adopted Accounting Pronouncements In July 2021, the FASB issued ASU 2021-05, Leases (Topic 842): Lessors – Certain Leases with Variable Lease Payments (ASU 2021-05) which requires a lessor to classify a lease with entirely or partially variable payments that do not depend on an index or rate as an operating lease if a different classification would result in a commencement date selling loss (Day 1 loss). The Company adopted ASU 2021-05 on January 1, 2022. There was no material impact to the Company's consolidated financial statements from the implementation of ASU 2021-05. Statements of Cash Flows For purposes of the Consolidated Statements of Cash Flows, the Company considers investment instruments purchased with an original maturity of three months or less to be cash equivalents. The following table provides the details of the adjustments to reconcile net income to net cash provided by operating activities for the three months ended March 31: 2022 2021 Net income $ 190,308 $ 129,470 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation 8,098 8,309 Amortization 16,887 14,352 Equity in earnings of unconsolidated affiliate (32,459) (33,350) Distributions received from unconsolidated affiliate 32,961 28,774 Stock-based compensation 10,566 9,752 Provision for losses on receivables (214) 1,207 Deferred income tax expense (10,908) (3,915) Net loss (gain) from investments 489 (332) Change in other long-term liabilities 1,138 1,043 Change in other assets (706) 507 Contract costs capitalized, net of amortization 389 351 Other 1,228 992 Change in current assets and liabilities (Increase) decrease in Receivables from investment products 1,452 (2,020) Receivables 3,979 (22,016) Other current assets (2,556) (4,113) Advances due from unconsolidated affiliate 54,636 51,266 (Decrease) increase in Accounts payable (2,273) (2,237) Accrued liabilities (18,078) (41,717) Deferred revenue 5,490 250 Total adjustments 70,119 7,103 Net cash provided by operating activities $ 260,427 $ 136,573

Investment In Unconsolidated Af

Investment In Unconsolidated Affiliate	3 Months Ended
	Mar. 31, 2022
Equity Method Investments and Joint Ventures [Abstract]
Investment In Unconsolidated Affiliate	Investment in Unconsolidated Affiliate LSV Asset Management The Company has an investment in LSV Asset Management (LSV), a registered investment advisor that provides investment advisory services primarily to institutions, including pension plans and investment companies. LSV is currently an investment sub-advisor for a limited number of SEI-sponsored investment products. The Company's partnership interest in LSV as of March 31, 2022 was 38.7%. The Company accounts for its interest in LSV using the equity method because of its less than 50% ownership. The Company’s interest in the net assets of LSV is reflected in Investment in unconsolidated affiliate on the accompanying Consolidated Balance Sheets and its interest in the earnings of LSV is reflected in Equity in earnings of unconsolidated affiliate on the accompanying Consolidated Statements of Operations. At March 31, 2022, the Company’s total investment in LSV was $52,778. The Company receives partnership distributions from LSV on a quarterly basis. The Company received partnership distributions from LSV of $32,961 and $28,774 in the three months ended March 31, 2022 and 2021, respectively. As such, the Company considers these distribution payments as returns on investment rather than returns of the Company's original investment in LSV and has therefore classified the associated cash inflows as an operating activity on the Consolidated Statements of Cash Flows. The Company’s proportionate share in the earnings of LSV was $32,459 and $33,350 during the three months ended March 31, 2022 and 2021, respectively. These tables contain condensed financial information of LSV: Condensed Statement of Operations Three Months Ended March 31, 2022 2021 Revenues $ 108,450 $ 110,837 Net income 83,791 85,920 Condensed Balance Sheets March 31, 2022 December 31, 2021 Current assets $ 128,362 $ 171,058 Non-current assets 5,028 4,792 Total assets $ 133,390 $ 175,850 Current liabilities $ 41,767 $ 82,858 Non-current liabilities 3,665 3,863 Partners’ capital 87,958 89,129 Total liabilities and partners’ capital $ 133,390 $ 175,850

Composition of Certain Financia

Composition of Certain Financial Statement Captions	3 Months Ended
	Mar. 31, 2022
Items Included in Consolidated Statement of Financial Condition [Abstract]
Composition of Certain Financial Statement Captions	Composition of Certain Financial Statement Captions Receivables Receivables on the accompanying Consolidated Balance Sheets consist of: March 31, 2022 December 31, 2021 Trade receivables $ 101,117 $ 111,209 Fees earned, not billed 330,678 315,255 Other receivables 7,437 16,747 439,232 443,211 Less: Allowance for doubtful accounts (1,388) (1,602) $ 437,844 $ 441,609 Fees earned, not billed represents receivables from contracts with customers earned but unbilled and results from timing differences between services provided and contractual billing schedules. These billing schedules generally provide for fees to be billed on a quarterly basis. In addition, certain fees earned from investment operations services are calculated based on assets under administration that have an extended valuation process. Billings to these clients occur once the asset valuation processes are completed. Receivables from investment products on the accompanying Consolidated Balance Sheets primarily represent fees receivable for distribution, investment advisory, and administration services to various regulated investment companies and other investment products sponsored by SEI. Property and Equipment Property and Equipment on the accompanying Consolidated Balance Sheets consists of: March 31, 2022 December 31, 2021 Buildings $ 209,834 $ 209,766 Equipment 161,426 153,158 Land 25,825 24,651 Purchased software 156,529 156,387 Furniture and fixtures 21,328 21,254 Leasehold improvements 21,564 21,946 Construction in progress 993 955 597,499 588,117 Less: Accumulated depreciation (417,041) (409,248) Property and Equipment, net $ 180,458 $ 178,869 The Company recognized $8,098 and $8,309 in depreciation expense related to property and equipment for the three months ended March 31, 2022 and 2021, respectively. Deferred Contract Costs Deferred contract costs, which primarily consist of deferred sales commissions, were $35,847 and $36,236 as of March 31, 2022 and December 31, 2021, respectively. The Company deferred expenses related to contract costs of $3,519 and $2,372 during the three months ended March 31, 2022 and 2021, respectively. Amortization expense related to deferred contract costs were $3,908 and $2,723 during the three months ended March 31, 2022 and 2021, respectively. Amortization expense during the three months ended March 31, 2022 includes $1,784 in expense accelerated as a result of the termination of a contractual agreement with a significant client (See Note 13). Amortization expense related to deferred contract costs is included in Compensation, benefits and other personnel on the accompanying Consolidated Statements of Operations. There was no impairment loss in relation to deferred contract costs during the three months ended March 31, 2022. Accrued Liabilities Accrued liabilities on the accompanying Consolidated Balance Sheets consist of: March 31, 2022 December 31, 2021 Accrued employee compensation $ 42,053 $ 107,933 Accrued employee benefits and other personnel 7,117 13,951 Accrued consulting, outsourcing and professional fees 44,175 36,411 Accrued sub-advisory, distribution and other asset management fees 58,087 58,661 Accrued dividend payable — 55,452 Accrued income taxes 55,278 — Other accrued liabilities 43,758 51,974 Total accrued liabilities $ 250,468 $ 324,382

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value MeasurementsThe fair value of the Company’s financial assets and liabilities, except for the Company's investment funds sponsored by LSV, is determined in accordance with the fair value hierarchy. The fair value of the Company’s Level 1 financial assets consist mainly of investments in open-ended mutual funds that are quoted daily. Level 2 financial assets consist of GNMA mortgage-backed securities held by the Company's wholly-owned limited purpose federal thrift subsidiary, SEI Private Trust Company (SPTC), Federal Home Loan Bank (FHLB) and other U.S. government agency short-term notes held by SIDCO. The financial assets held by SIDCO were purchased as part of a cash management program requiring only short term, top-tier investment grade government and corporate securities. The financial assets held by SPTC are debt securities issued by GNMA and are backed by the full faith and credit of the U.S. government. These securities were purchased for the sole purpose of satisfying applicable regulatory requirements and have maturity dates which range from 2023 to 2041. The fair value of the Company's investment funds sponsored by LSV is measured using the net asset value per share (NAV) as a practical expedient. The NAVs of the funds are calculated by the funds' independent custodian and are derived from the fair values of the underlying investments as of the reporting date. The funds allow for investor redemptions at the end of each calendar month. This investment has not been classified in the fair value hierarchy but is presented in the tables below to permit reconciliation to the amounts presented on the accompanying Consolidated Balance Sheets. The valuation of the Company's Level 2 financial assets held by SIDCO and SPTC are based upon securities pricing policies and procedures utilized by third-party pricing vendors. The pricing policies and procedures applied for our Level 1 and Level 2 financial assets during the three months ended March 31, 2022 were consistent with those as described in the Company's Annual Report on Form 10-K at December 31, 2021. The Company had no Level 3 financial assets at March 31, 2022 or December 31, 2021 that were required to be measured at fair value on a recurring basis. Level 3 financial liabilities at March 31, 2022 and December 31, 2021 consist entirely of the estimated contingent consideration resulting from an acquisition (See Note 12). The fair value of the contingent consideration was determined using a Monte-Carlo simulation model. Key assumptions for the Monte-Carlo simulation model include expected revenues, expected volatility, risk-free rate and other factors. There were no transfers of financial assets between levels within the fair value hierarchy during the three months ended March 31, 2022. The fair value of certain financial assets of the Company was determined using the following inputs: Fair Value Measurements at the End of the Reporting Period Using Assets March 31, 2022 Quoted Prices in Significant Equity securities $ 11,903 $ 11,903 $ — Available-for-sale debt securities 122,814 — 122,814 Fixed-income securities owned 31,258 — 31,258 Investment funds sponsored by LSV (1) 7,270 $ 173,245 $ 11,903 $ 154,072 Fair Value Measurements at the End of the Reporting Period Using Assets December 31, 2021 Quoted Prices in Significant Equity securities $ 12,406 $ 12,406 $ — Available-for-sale debt securities 117,135 — 117,135 Fixed-income securities owned 28,267 — 28,267 Investment funds sponsored by LSV (1) 6,916 $ 164,724 $ 12,406 $ 145,402

Marketable Securities

Marketable Securities	3 Months Ended
	Mar. 31, 2022
Marketable Securities [Abstract]
Marketable Securities	Marketable Securities Marketable securities include investments in money market funds and commercial paper classified as cash equivalents, available-for-sale debt securities, investments in SEI-sponsored and non-SEI-sponsored mutual funds, equities, investments in funds sponsored by LSV and securities owned by SIDCO. Cash Equivalents Investments in money market funds and commercial paper classified as cash equivalents had a fair value of $422,635 and $422,838 at March 31, 2022 and December 31, 2021, respectively. There were no material unrealized or realized gains or losses from these investments during the three months ended March 31, 2022 and 2021. Investments in money market funds and commercial paper are Level 1 assets. Available for Sale and Equity Securities Available For Sale and Equity Securities on the accompanying Consolidated Balance Sheets consist of: At March 31, 2022 Cost Gross Gross Fair Available-for-sale debt securities $ 127,804 $ — $ (4,990) $ 122,814 SEI-sponsored mutual funds 6,353 505 (21) 6,837 Equities and other mutual funds 4,837 229 — 5,066 $ 138,994 $ 734 $ (5,011) $ 134,717 At December 31, 2021 Cost Gross Gross Fair Available-for-sale debt securities $ 117,215 $ — $ (80) $ 117,135 SEI-sponsored mutual funds 6,748 463 — 7,211 Equities and other mutual funds 4,935 260 — 5,195 $ 128,898 $ 723 $ (80) $ 129,541 Net unrealized losses at March 31, 2022 of available-for-sale debt securities were $3,842 (net of income tax benefit of $1,148). Net unrealized losses at December 31, 2021 of available-for-sale debt securities were $62 (net of income tax benefit of $18). These unrealized losses are associated with the Company’s investments in mortgage-backed securities issued by GNMA and were caused by interest rate increases (See Note 4). The contractual cash flows of these securities are guaranteed by an agency of the U.S. government. Accordingly, it is expected that the securities would not be settled at a price less than the amortized cost bases of the Company's investments. The Company does not intend to sell the investments and it is not more likely than not that the Company will be required to sell the investments before recovery of their amortized cost bases. These net unrealized losses are reported as a separate component of Accumulated other comprehensive loss on the accompanying Consolidated Balance Sheets. There were gross realized losses of $246 and $327 from available-for-sale debt securities during the three months ended March 31, 2022 and 2021, respectively. There were no gross realized gains from available-for-sale debt securities during the three months ended March 31, 2022 and 2021. Realized losses from available-for-sale debt securities, including amounts reclassified from accumulated comprehensive loss, are reflected in Net (loss) gain from investments on the accompanying Consolidated Statements of Operations. There were gross realized gains of $5 and gross realized losses of $579 from mutual funds and equities during the three months ended March 31, 2022. Gains and losses from mutual funds and equities are reflected in Net (loss) gain from investments on the accompanying Consolidated Statements of Operations. Investments in Affiliated Funds The Company has an investment in funds sponsored by LSV. The Company records this investment on the accompanying Consolidated Balance Sheets at fair value. Unrealized gains and losses from the change in fair value of these funds are recognized in Net (loss) gain from investments on the accompanying Consolidated Statements of Operations. The funds had a fair value of $7,270 and $6,916 at March 31, 2022 and December 31, 2021, respectively. The Company recognized unrealized gains of $354 and $457 during the three months ended March 31, 2022 and 2021, respectively, from the change in fair value of the funds. Securities Owned The Company’s broker-dealer subsidiary, SIDCO, has investments in U.S. government agency securities with maturity dates less than one year. These investments are reflected as Securities owned on the accompanying Consolidated Balance Sheets. Due to specialized accounting practices applicable to investments by broker-dealers, the securities are reported at fair value and changes in fair value are recorded in current period earnings. The securities had a fair value of $31,258 and $28,267 at March 31, 2022 and December 31, 2021, respectively. There were no material net gains or losses related to the securities during the three months ended March 31, 2022 and 2021.

Line of Credit

Line of Credit	3 Months Ended
	Mar. 31, 2022
Line of Credit Facility [Abstract]
Line of Credit	Line of Credit The Company has a five-year $325,000 Credit Agreement (the Credit Facility) with Wells Fargo Bank, N.A., and a syndicate of other lenders. The Credit Facility is scheduled to expire in April 2026, at which time any aggregate principal amount of loans outstanding becomes payable in full. Any borrowings made under the Credit Facility will accrue interest at rates that, at the Company's option, are based on a base rate (the Base Rate) plus a premium that can range from 0.25% to 1.00% or the London InterBank Offered Rate (LIBOR) plus a premium that can range from 1.25% to 2.00% depending on the Company’s Leverage Ratio (a ratio of consolidated indebtedness to consolidated EBITDA for the four preceding fiscal quarters, all as defined in the related agreement). The Base Rate is defined as the highest of a) the Federal Funds Rate, as published by the Federal Reserve Bank of New York, plus 0.50%, b) the prime commercial lending rate of Wells Fargo, c) the applicable LIBOR plus 1.00%, or d) 0%. The Credit Facility includes fallback language clearly defining an alternative reference rate which provides for specified replacement rates upon a LIBOR cessation event. At the time of a LIBOR cessation event, the replacement rate, the Secured Overnight Financing Rate (SOFR), self-executes without the need for negotiations or a formal amendment process. The Company also pays quarterly commitment fees based on the unused portion of the Credit Facility. The quarterly fees for the Credit Facility can range from 0.15% of the amount of the unused portion to 0.30%, depending on the Company’s Leverage Ratio. Certain wholly-owned subsidiaries of the Company have guaranteed the obligations of the Company under the agreement. The aggregate amount of the Credit Facility may be increased by an additional $100,000 under certain conditions set forth in the agreement. The Company may issue up to $15,000 in letters of credit under the terms of the Credit Facility. The Company pays a periodic commission fee of 1.25% plus an issuance fee of 0.200% of the aggregate face amount of the outstanding letters of credit issued under the Credit Facility. The Credit Facility contains covenants with restrictions on the ability of the Company to do transactions with affiliates other than wholly-owned subsidiaries or to incur liens or certain types of indebtedness as defined in the agreement. In the event of a default under the Credit Facility, the Company would also be restricted from paying dividends on, or repurchasing, its common stock without the approval of the lenders. Upon the occurrence of certain financial or economic events, significant corporate events, or certain other events of default constituting an event of default under the Credit Facility, all loans outstanding may be declared immediately due and payable and all commitments under the agreement may be terminated. In November 2021, the Company borrowed $40,000 under the Credit Facility for the funding of an acquisition (See Note 12). In February 2022, the Company made a principal payment of $10,000 against the outstanding balance of the Credit Facility. As of March 31, 2022, the outstanding balance of the Credit Facility was $30,000 and is included in Borrowings Under Revolving Credit Facility on the accompanying Consolidated Balance Sheets. As of April 21, 2022, the Company had outstanding letters of credit of $6,264 under the Credit Facility. These letters of credit were issued primarily for the expansion of the Company's headquarters and are scheduled to expire during 2022. The amount of the Credit Facility that is available for general corporate purposes as of April 21, 2022 was $288,736. The Company considers the book value of long-term debt related to the borrowing through the Credit Facility to be representative of its fair value. The Company was in compliance with all covenants of the credit facilities during the three months ended March 31, 2022.

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2022
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders’ Equity Stock-Based Compensation The Company has only non-qualified stock options and restricted stock units outstanding under its equity compensation plans. All outstanding stock options have performance-based vesting provisions specific to each option grant that tie the vesting of the applicable stock options to the Company’s financial performance. The Company’s stock options vest at a rate of 50% when a specified financial vesting target is achieved, and the remaining 50% when a second, higher specified financial vesting target is achieved. Options vest as a result of achievement of the financial vesting targets. Options granted in December 2017 and thereafter include a service condition which requires a minimum two The Company recognized stock-based compensation expense in its Consolidated Financial Statements in the three months ended March 31, 2022 and 2021, respectively, as follows: Three Months Ended March 31, 2022 2021 Stock-based compensation expense $ 10,566 $ 9,752 Less: Deferred tax benefit (2,096) (1,854) Stock-based compensation expense, net of tax $ 8,470 $ 7,898 As of March 31, 2022, there was approximately $92,057 of unrecognized compensation cost remaining related to unvested employee stock options that management expects will vest and is being amortized. The Company issues new common shares associated with the exercise of stock options. The total intrinsic value of options exercised during the three months ended March 31, 2022 was $8,966. The total options exercisable as of March 31, 2022 had an intrinsic value of $103,527. The total intrinsic value for options exercisable is calculated as the difference between the market value of the Company’s common stock as of March 31, 2022 and the weighted average exercise price of the options. The market value of the Company’s common stock as of March 31, 2022 was $60.21 as reported by the Nasdaq Stock Market, LLC. The weighted average exercise price of the options exercisable as of March 31, 2022 was $49.16. Total options that were outstanding as of March 31, 2022 were 18,467,000 . Total options that were exercisable as of March 31, 2022 were 8,153,000 . Common Stock Buyback The Company’s Board of Directors, under multiple authorizations, has authorized the repurchase of common stock on the open market or through private transactions. The Company purchased 1,713,000 shares at a total cost of $100,090 during the three months ended March 31, 2022, which reduced the total shares outstanding of common stock. The cost of stock purchases during the period includes the cost of certain transactions that settled in the following quarter. As of March 31, 2022, the Company had approximately $131,203 of authorization remaining for the purchase of common stock under the program. The Company immediately retires its common stock when purchased. Upon retirement, the Company reduces Capital in excess of par value for the average capital per share outstanding and the remainder is charged against Retained earnings. If the Company reduces its Retained earnings to zero, any subsequent purchases of common stock will be charged entirely to Capital in excess of par value.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The components of Accumulated other comprehensive loss, net of tax, are as follows: Foreign Currency Translation Adjustments Unrealized Accumulated Other Comprehensive Loss Balance, January 1, 2022 $ (19,781) $ (62) $ (19,843) Other comprehensive loss before reclassifications (4,558) (3,969) (8,527) Amounts reclassified from accumulated other comprehensive loss — 189 189 Net current-period other comprehensive loss (4,558) (3,780) (8,338) Balance, March 31, 2022 $ (24,339) $ (3,842) $ (28,181)

Business Segment Information

Business Segment Information	3 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Business Segment Information	Business Segment Information The Company’s reportable business segments are: Private Banks – Provides outsourced investment processing and investment management platforms to banks and trust institutions, independent wealth advisers and financial advisors worldwide; Investment Advisors – Provides investment management and investment processing platforms to affluent investors through a network of independent registered investment advisors, financial planners and other investment professionals in the United States; Institutional Investors – Provides OCIO solutions, including investment management and administrative outsourcing platforms to retirement plan sponsors, healthcare systems, higher education and other not-for-profit organizations worldwide; Investment Managers – Provides investment operations outsourcing platforms to fund companies, banking institutions, traditional and non-traditional investment managers worldwide and family offices in the United States; and Investments in New Businesses – Focuses on providing investment management solutions to ultra-high-net-worth families residing in the United States; developing network and data protection services; modularizing larger technology platforms into stand-alone components; entering new markets; and conducting other research and development activities. The information in the following tables is derived from internal financial reporting used for corporate management purposes. There are no inter-segment revenues for the three months ended March 31, 2022 and 2021. Assets are not allocated to segments for internal reporting purposes. The accounting policies of the reportable business segments are the same as those described in Note 1 to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. The following tables highlight certain financial information about each of the business segments for the three months ended March 31, 2022 and 2021: Private Banks Investment Institutional Investment Investments Total For the Three Months Ended March 31, 2022 Revenues $ 213,548 $ 119,230 $ 86,839 $ 156,901 $ 4,925 $ 581,443 Expenses 121,955 64,520 45,358 98,837 11,950 342,620 Operating profit (loss) $ 91,593 $ 54,710 $ 41,481 $ 58,064 $ (7,025) $ 238,823 Private Investment Institutional Investment Investments Total For the Three Months Ended March 31, 2021 Revenues $ 117,608 $ 113,294 $ 84,499 $ 136,419 $ 3,866 $ 455,686 Expenses 110,724 55,027 39,158 83,020 13,404 301,333 Operating profit (loss) $ 6,884 $ 58,267 $ 45,341 $ 53,399 $ (9,538) $ 154,353 A reconciliation of the total operating profit reported for the business segments to income from operations in the Consolidated Statements of Operations for the three months ended March 31, 2022 and 2021 is as follows: 2022 2021 Total operating profit from segments $ 238,823 $ 154,353 Corporate overhead expenses (24,024) (21,516) Income from operations $ 214,799 $ 132,837 The following tables provide additional information for the three months ended March 31, 2022 and 2021 pertaining to the business segments: Capital Expenditures (1) Depreciation 2022 2021 2022 2021 Private Banks $ 7,222 $ 5,829 $ 5,106 $ 4,132 Investment Advisors 3,027 2,308 456 1,289 Institutional Investors 949 511 289 358 Investment Managers 4,024 1,631 2,020 2,053 Investments in New Businesses 205 139 44 146 Total from business segments $ 15,427 $ 10,418 $ 7,915 $ 7,978 Corporate overhead 445 160 183 331 $ 15,872 $ 10,578 $ 8,098 $ 8,309 (1) Capital expenditures include additions to property and equipment and capitalized software. Amortization 2022 2021 Private Banks $ 8,539 $ 8,576 Investment Advisors 3,233 2,627 Institutional Investors 2,283 426 Investment Managers 2,576 2,480 Investments in New Businesses 185 185 Total from business segments $ 16,816 $ 14,294 Corporate overhead 71 58 $ 16,887 $ 14,352

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The gross liability for unrecognized tax benefits at March 31, 2022 and December 31, 2021 was $15,768 and $14,887, respectively, exclusive of interest and penalties, of which $15,251 and $14,382 would affect the effective tax rate if the Company were to recognize the tax benefit. The Company classifies interest and penalties on unrecognized tax benefits as income tax expense. As of March 31, 2022 and December 31, 2021, the combined amount of accrued interest and penalties related to tax positions taken on tax returns was $1,445 and $1,338, respectively. March 31, 2022 December 31, 2021 Gross liability for unrecognized tax benefits, exclusive of interest and penalties $ 15,768 $ 14,887 Interest and penalties on unrecognized benefits 1,445 1,338 Total gross uncertain tax positions $ 17,213 $ 16,225 Amount included in Current liabilities $ 4,272 $ 4,253 Amount included in Other long-term liabilities 12,941 11,972 $ 17,213 $ 16,225 The effective income tax rate for the three months ended March 31, 2022 and 2021 differs from the federal income tax statutory rate due to the following: Three Months Ended March 31, 2022 2021 Statutory rate 21.0 % 21.0 % State taxes, net of federal tax benefit 2.9 3.1 Foreign tax expense and tax rate differential (0.1) (0.1) Tax benefit from stock option exercises (0.4) (1.1) Other, net (0.3) (0.3) 23.1 % 22.6 % The increase in the Company's effective tax rate for the three months ended March 31, 2022 was primarily due to decreased tax benefits related to the lower volume of stock option exercises in 2022 compared to the prior year period. The Company files income tax returns in the United States on a consolidated basis and in many U.S. state and foreign jurisdictions. The Company is subject to examination of income tax returns by the Internal Revenue Service (IRS) and other domestic and foreign tax authorities. The Company is no longer subject to U.S. federal income tax examination for years before 2018 and is no longer subject to state, local or foreign income tax examinations by authorities for years before 2015. The Company estimates it will recognize $4,272 of gross unrecognized tax benefits. This amount is expected to be paid within one year or to be removed at the expiration of the statute of limitations and resolution of income tax audits and is netted against the current payable account. These unrecognized tax benefits are related to tax positions taken on certain federal, state, and foreign tax returns. However, the timing of the resolution of income tax examinations is highly uncertain, and the amounts ultimately paid, if any, upon resolution of the issues raised by the taxing authorities may differ materially from the amounts accrued for each year. While it is reasonably possible that some issues under examination could be resolved in the next twelve months, based upon the current facts and circumstances, the Company cannot reasonably estimate the timing of such resolution or the total range of potential changes as it relates to the current unrecognized tax benefits that are recorded as part of the Company’s financial statements.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies In the ordinary course of business, the Company from time to time enters into contracts containing indemnification obligations of the Company. These obligations may require the Company to make payments to another party upon the occurrence of certain events including the failure by the Company to meet its performance obligations under the contract. These contractual indemnification provisions are often standard contractual terms of the nature customarily found in the type of contracts entered into by the Company. In many cases, there are no stated or notional amounts included in the indemnification provisions. There are no amounts reflected on the Consolidated Balance Sheets as of March 31, 2022 and December 31, 2021 related to these indemnifications. Stanford Trust Company Litigation SEI has been named in seven lawsuits filed in Louisiana courts; four of the cases also name SPTC as a defendant. The underlying allegations in all actions relate to the purported role of SPTC in providing back-office services to Stanford Trust Company. The complaints allege that SEI and SPTC participated in some manner in the sale of “certificates of deposit” issued by Stanford International Bank so as to be a “seller” of the certificates of deposit for purposes of primary liability under the Louisiana Securities Law or so as to be secondarily liable under that statute for sales of certificates of deposit made by Stanford Trust Company. Two of the actions also include claims for violations of the Louisiana Racketeering Act and possibly conspiracy, and a third also asserts claims of negligence, breach of contract, breach of fiduciary duty, violations of the uniform fiduciaries law, negligent misrepresentation, detrimental reliance, violations of the Louisiana Racketeering Act, and conspiracy. This litigation is comprised of two federal class actions that are based on similar theories, the Lillie and the Adhers litigations, and five ancillary but related actions, all of which have all been dormant as the Lillie and Adhers matters were litigated. All claims in the Lillie and Adhers litigations have been dismissed by the United States District Court. These dismissals have been upheld on appeal by the United States Court of Appeals for the Fifth Circuit. The only potential recourse left for plaintiffs is to seek a writ of certiorari from the United States Supreme Court for leave to appeal to the Fifth Circuit decision. The plaintiffs in these actions did not seek a writ of certiorari within the time period for filing, consequently these matters are now closed. SEI is also named as a relief defendant in another matter, Janvey v. Alguire , where SEI is not a defendant but custodian of the assets subject to the litigation. While SEI expects all remaining ancillary litigations to be resolved in its favor, counsel is in the process of having these cases dismissed as a consequence of the final resolution of the Lillie and Adhers cl ass action litigations: • In two of the state cases pending in the District Court in Louisiana , Milford Wampold, III, et. al. v. Pershing, LLC, et. al., and Numa L. Marquette, et al. v . Pershing, LLC, et. al., both plaintiffs have agreed to dismiss all claims against SEI, and SEI and plaintiffs will be filing joint motions to dismiss with prejudice plaintiffs’ claims against SEI and SPTC. • The two other state cases, Farr and Rolland , are based on similar claims as in Lillie and Adhers , and plaintiffs are represented by the same counsel as in the Lillie matter. The Company is awaiting receipt of information requested from plaintiff’s counsel concerning individuals that opted out of the Lillie class prior to seeking dismissal of these two matters based on the Lille and Adhers precedent. • The last action in federal court, Jackson , remains pending. The opt-out information the Company is gathering from plaintiff’s counsel in the Lillie matter will inform next steps in the process to dismiss this matter. While the ultimate outcome of this litigation remains uncertain, SEI and SPTC believe that they have valid defenses to plaintiffs' claims and intend to defend the lawsuits vigorously. Because of uncertainty in the make-up of the Lillie class, the specific theories of liability that may survive a motion for summary judgment or other dispositive motion, the relative lack of discovery regarding damages, causation, mitigation and other aspects that may ultimately bear upon loss, the Company is not reasonably able to provide an estimate of loss, if any, with respect to the foregoing lawsuits. SS&C Advent Litigation On February 28, 2020, SEI Global Services, Inc. (SGSI), a wholly-owned subsidiary of the Company, filed a complaint under seal in the United States District Court for the Eastern District of Pennsylvania against SS&C Advent (Advent) and SS&C Technologies Holdings, Inc. (SS&C) alleging that SS&C and Advent breached the terms of the contract between the parties and asking the Court to hold SS&C and Advent to their bargained-for obligations (the Advent Matter). In addition to Breach of Contract, the complaint also includes counts for Declaratory Judgment, Tortious Interference with Existing and Prospective Contractual Relations, Violation of the New York General Business Law Section 349, Violations of Section 2 of the Sherman Antitrust Act, Promissory Estoppel and Breach of the Covenant of Good Faith and Fair Dealing. SGSI seeks various forms of relief, including declaratory judgment, specific performance under the contract, and monetary damages, including punitive damages, treble damages and attorney’s fees. Following various procedural actions, including an amendment of SGSI’s complaint to include additional breach of contract claims, Advent filed a motion to dismiss SGSI’s complaint. On October 23, 2020, the United States District Court for the Eastern District of Pennsylvania dismissed SEI’s federal antitrust claims and declined to rule on the state law claims on the basis that in the absence of the anti-trust claim, the court had no jurisdiction over the state law claims. SGSI has appealed the dismissal of the federal anti-trust claims to the Third Circuit Court of Appeals, which is currently pending. Since October 23, 2020, Advent and SGSI have been litigating the remaining breach of contract, breach of the implied duty of good faith and fair dealing, and tortious interference with contract claims in New York State Court. Additionally, SGSI made motions for injunctive relief to insure that Advent provided SGSI with access to the Geneva, Moxy and APX software modules as SGSI believes is required pursuant to the terms of a valid contract. On January 13, 2021, Judge Borrok of the Supreme Court of the State of New York, granted SGSI’s motion for injunctive relief and issued an Order in which he characterized the basis for Advent’s claim for breach of contract as appearing to be “pre-textual” and found that SGSI’s claims for breach of contract would likely succeed on the merits. Judge Borrok granted SGSI’s motion for injunctive relief, on a preliminary basis, and precluded SS&C Advent from: • Dishonoring their contractual obligations and commitments under the SLSA, including, denying SEI’s licenses, rights, and privileges under the SLSA; • Failing to provide new license keys for the license keys due to Geneva, Moxy, and APX, and other software products licensed by SEI pursuant to the SLSA (such new license keys to be provided no later than January 15, 2021 at 10 A.M.); • Denying to SEI any and all access to the Geneva, Moxy, and APX software and related modules as are reasonably necessary to provide access to such software to SEI’s clients; and • Denying to SEI any and all support, maintenance and technical support services for Geneva, Moxy, and APX. Pursuant to the Court's injunction order, SS&C Advent provided SEI with the necessary access to the Geneva, Moxy and APX software modules on January 14, 2021. These were tested, verified and are now running in the SEI production environment. On January 15, 2021, SS&C Advent appealed Judge Borrok’s order granting SEI’s motion for preliminary injunctive relief to the Appellate Division of the Supreme Court of the State of New York, First Department. The Appellate Division unanimously affirmed the injunction order on June 15, 2021. On March 1, 2021, SS&C Advent moved to dismiss SGSI’s breach of contract and tortious interference with contract counter claims. These counter-claims were: 1. breach of contract; 2. declaratory judgment; 3. tortious interference with existing and prospective contractual relations; 4. deceptive trade practices in violation of New York Statutes; 5. breach of the covenant of good faith and fair dealing; and 6. promissory estoppel. The parties agreed to toll the litigation while endeavoring to resolve their dispute through a settlement mediation process moderated by Judge Borrok. The parties were unable to reach an agreement as to a settlement of the litigation and reengaged in the litigation process. On October 5, 2021, Judge Borrok issued an order partially denying and partially granting SS&C’s Advent’s motion to dismiss SGSI’s breach of contract and tortious interference with contract counter claims. Judge Borrok dismissed the third claim with respect to prospective contractual relationships only, as well as the fourth claim and the sixth claim. The remaining claims directed to proceed were: 1. breach of contract; 2. declaratory judgment; 3. tortious interference with existing a contractual relations; and 4. breach of the covenant of good faith and fair dealing. On December 1, 2021, SGSI filed a motion for partial summary judgment in the New York state court action. This motion applies to Count I of SS&C Advent’s complaint (SS&C Advent’s request for a declaratory judgment that its termination of the SGSI license agreements was proper); and Counts I and II of SGSI’s counterclaims (SGSI’s request for a declaratory judgment that SS&C Advent’s termination of the contract was improper because the licenses are perpetual unless SGSI chooses to not renew them or breaches the terms). SS&C Advent filed a cross-motion for summary judgment for a declaration that it was entitled to not renew SGSI's contracts. It also argued that if SGSI prevailed on its breach of contract claims, then its breach of implied duty of good faith and fair dealing claim must be dismissed in turn. On December 7, 2021, SGSI filed its appellate brief with the Third Circuit Court of Appeals. SS&C Advent filed its appellate brief on January 7, 2022. SGSI filed its Reply brief on January 27, 2022. A disposition date, which could include oral argument, before the Third Circuit Court of Appeals currently is scheduled for June 10, 2022. On December 31, 2021, SGSI received the license key for another year of access to the product. This ensures SGSI access to Advent and Moxy through January 31, 2023. On April 15, 2022, Judge Borrok held a hearing on SGSI’s motion for partial summary judgement and issued an order on the same day granting SGSI's motion in its entirety and denying SS&C's cross motion. Specifically, the Court: 1. Rejected SS&C Advent's argument that the license is not perpetual; 2. Determined that SS&C Advent's purported termination was "pretextual" and breached the parties' contract; 3. Determined that SS&C Advent's attempt to not renew breached the parties' contracts because "Advent did not have the right not to renew," after dismissing SS&C Advent's argument that it shared the same nonrenewal rights as SGSI as a "false narrative;" and 4. Rejected SS&C Advent's second attempt to dismiss SGSI's breach of implied duty of good faith and fair dealing claim. SEI continues to believe that it will not have to change providers under the current terms of its contract with SS&C Advent and that the process of litigating its rights under this contract may be a multi-year process. SEI believes SGSI has a strong basis for proving the actions it alleges in the Advent Matter and looks forward to the opportunity to pursue its remaining tort and breach of implied covenant and good faith and fair dealing claims continue to assert all of its rights in tort and under the contract and prove the damages that it has suffered as a consequence of the behavior by SS&C Advent that SGSI alleges. SEI expects the financial impact of litigating the Advent Matter to be immaterial. Other Matters The Company and certain of its subsidiaries are party to various other examinations, investigations, actions and claims arising in the normal course of business that the Company does not believe are material. The Company believes that the ultimate resolution of these matters will not have a material adverse effect on the Company's financial position or the manner in which the Company conducts its business. Currently, the Company does not believe the amount of losses associated with these matters can be estimated. While the Company does not believe that the amount of such losses will, when liquidated or estimable, be material to its financial position, the assumptions may be incorrect and any such loss could have a material adverse effect on the Company's results of operations or the manner in which the Company conducts its business in the period(s) during which the underlying matters are resolved.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets The changes in the carrying amount of the Company's goodwill by segment are as follows: Institutional Investors Investment Managers Investments in New Businesses Total Balance, December 31, 2021 $ 48,911 $ 56,822 $ 11,499 $ 117,232 Measurement period adjustments — 211 — 211 Foreign currency translation adjustments — (9) — (9) Balance, March 31, 2022 $ 48,911 $ 57,024 $ 11,499 $ 117,434 In October 2021, the Company acquired all ownership interests of Finomial Corporation (Finomial). The excess purchase price over the estimated value of the net tangible and identifiable intangible assets was allocated to goodwill. The total amount of goodwill from this transaction amounted to $4,036 and is included in the accompanying Consolidated Balance Sheets. In November 2021, the Company acquired all ownership interests of Novus Partners (Novus). The excess purchase price over the estimated value of the net tangible and identifiable intangible assets was allocated to goodwill. The total amount of goodwill from this transaction amounted to $48,911 and is included in the accompanying Consolidated Balance Sheets. In addition to the intangible assets acquired through the acquisitions of Finomial and Novus, during 2021, the Company also acquired intangible assets through the purchase of a technology platform providing digital collaboration tools for financial advisors and the purchase of the Atlas Master Trust, a defined contribution master trust in the United Kingdom. In April 2018, the Company acquired all ownership interests of Huntington Steele, LLC (Huntington Steele). The total purchase price was allocated to Huntington Steele’s net tangible and intangible assets based upon their estimated fair values at the date of purchase. The excess purchase price over the value of the identifiable intangible assets was recorded as goodwill. The total amount of goodwill from this transaction amounted to $11,499 and is included on the accompanying Consolidated Balance Sheets. The total purchase price for Huntington Steele included a contingent purchase price payable to the sellers upon the attainment of specified financial measures determined at various intervals occurring between 2019 and 2023. The Company made payments of $868 and $702 during the three months ended March 31, 2022 and 2021, respectively, to the sellers. As of March 31, 2022, the remaining amount of the contingent consideration of $9,011 is included in Other long-term liabilities on the accompanying Balance Sheet. The Company recognized $3,253 and $921 of amortization expense related to the intangible assets acquired through acquisitions during the three months ended March 31, 2022 and 2021, respectively.

Revenues from Contracts with Cu

Revenues from Contracts with Customers	3 Months Ended
	Mar. 31, 2022
Revenue from Contract with Customer [Abstract]
Revenues from Contracts with Customers	Revenues from Contracts with Customers The Company’s principal sources of revenues are: (1) asset management, administration and distribution fees primarily earned based upon a contractual percentage of net assets under management or administration; and (2) information processing and software servicing fees that are either recurring and primarily earned based upon the number of trust accounts being serviced or a percentage of the market value of the clients' assets processed on the Company's platforms, or non-recurring and based upon project-oriented contractual agreements related to client implementations. Disaggregation of Revenue The following tables provide additional information pertaining to our revenues disaggregated by major product line and primary geographic market based on the location of the use of the products or services for each of the business segments for the three months ended March 31, 2022 and 2021: Private Banks Investment Institutional Investment Investments Total Major Product Lines: For the Three Months Ended March 31, 2022 Investment management fees from pooled investment products $ 33,118 $ 71,993 $ 13,866 $ 84 $ 367 $ 119,428 Investment management fees from investment management agreements 255 42,008 68,460 — 4,126 114,849 Investment operations fees 360 — — 145,379 — 145,739 Investment processing fees - PaaS 56,455 — — — — 56,455 Investment processing fees - SaaS 29,559 — 3,110 3,658 — 36,327 Professional services fees (1) 92,729 — — 389 — 93,118 Account fees and other 1,072 5,229 1,403 7,391 432 15,527 Total revenues $ 213,548 $ 119,230 $ 86,839 $ 156,901 $ 4,925 $ 581,443 Primary Geographic Markets: United States $ 80,886 $ 119,230 $ 70,563 $ 144,025 $ 4,925 $ 419,629 United Kingdom 116,663 — 12,749 — — 129,412 Canada 11,800 — 1,242 — — 13,042 Ireland 4,199 — 2,167 9,822 — 16,188 Luxembourg — — — 3,054 — 3,054 Other — — 118 — — 118 Total revenues $ 213,548 $ 119,230 $ 86,839 $ 156,901 $ 4,925 $ 581,443 (1) Professional services fees of the Private Banks segment includes one-time early termination fees of $88,000 related to a contractual agreement with a significant client of the Company. In accordance with Accounting Standards Codification 606, the entire amount of the fees received were recorded during the three months ended March 31, 2022 as there were no future performance obligations of the Company related to the agreement upon termination. Private Investment Institutional Investment Investments Total Major Product Lines: For the Three Months Ended March 31, 2021 Investment management fees from pooled investment products $ 32,564 $ 72,654 $ 14,088 $ 59 $ 329 $ 119,694 Investment management fees from investment management agreements 473 34,714 69,943 — 3,386 108,516 Investment operations fees 369 — — 125,161 — 125,530 Investment processing fees - PaaS 50,876 — — — — 50,876 Investment processing fees - SaaS 27,810 — — 3,706 — 31,516 Professional services fees 4,407 — — 1,147 — 5,554 Account fees and other 1,109 5,926 468 6,346 151 14,000 Total revenues $ 117,608 $ 113,294 $ 84,499 $ 136,419 $ 3,866 $ 455,686 Primary Geographic Markets: United States $ 75,095 $ 113,294 $ 66,720 $ 127,016 $ 3,866 $ 385,991 United Kingdom 26,665 — 13,729 — — 40,394 Canada 11,482 — 1,302 — — 12,784 Ireland 4,366 — 2,619 9,403 — 16,388 Other — — 129 — — 129 Total revenues $ 117,608 $ 113,294 $ 84,499 $ 136,419 $ 3,866 $ 455,686 Investment management fees from pooled investment products - Revenues associated with clients' assets invested in Company-sponsored pooled investment products. Contractual fees are stated as a percentage of the market value of assets under management and collected on a monthly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations. Investment management fees from investment management agreements - Revenues based on assets of clients of the Institutional Investors segment primarily invested in Company-sponsored products. Each client is charged an investment management fee that is stated as a percentage of the market value of all assets under management. The client is billed directly on a quarterly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations. Revenues associated with the separately managed account program offered through registered investment advisors located throughout the United States. The contractual fee is stated as a percentage of the market value of all assets invested in the separately managed account and collected on a quarterly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations. Investment operations fees - Revenues earned from accounting and administrative services, distribution support services and regulatory and compliance services to investment management firms and family offices. The Company contracts directly with the investment management firm or family office. The contractual fees are stated as a percentage of net assets under administration and billed when asset valuations are finalized. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations. Investment processing fees - Platform as a Service - Revenues associated with clients that outsource their entire investment operation and back-office processing functions. Through the use of the Company's proprietary platforms, the Company assumes all back-office investment processing services including investment processing, custody and safekeeping of assets, income collections, securities settlement and other related trust activities. The contractual fee is based on a monthly fee plus additional fees determined on a per-account or per-transaction basis. Contractual fees can also be stated as a percentage of the value of assets processed on the Company's platforms each month as long as the fee is in excess of a monthly contractual minimum. The client is billed directly on a monthly basis. Revenues are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations. Investment processing fees - Software as a Service - Revenues associated with clients that outsource investment processing technology software and computer processing by accessing the Company's proprietary software and data center remotely but retain responsibility for all investment operations, client administration and other back-office trust operations. The contractual fee is based on a monthly fee plus additional fees determined on a per-account or per-transaction basis. The client is billed directly on a monthly basis. Revenues associated with portfolio intelligence and workflow solutions offered to clients of the Institutional Investors segment and revenues associated with technology and outsourced services that support the accounting, investment management, and reporting functions for family offices and their service providers offered to clients of the Investment Managers segment. The contractual fee is primarily based on an annual fixed fee for software licenses and data management services. The client is billed in advance with various billing terms. Revenue recorded in advance of the performance of services is deferred and recognized when earned. Revenues are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations. Professional services fees - Revenues associated with the business services migration for investment processing clients of the Private Banks segment and investment operations clients of the Investment Managers segment. In addition, Professional services include other services such as business transformation consulting. Typically, fees are stated as a contractual fixed fee. The client is billed directly and fees are collected according to the terms of the agreement. Account fees and other - Revenues associated with custody account servicing, account terminations, reimbursements received for out-of-pocket expenses, and other fees for the provision of ancillary services.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of PresentationThe accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America.
Variable Interest Entities	Variable Interest Entities The Company or its affiliates have created numerous investment products for its clients in various types of legal entity structures. The Company serves as the Manager, Administrator and Distributor for these investment products and may also serve as the Trustee for some of the investment products. The Company receives asset management, distribution, administration and custodial fees for these services. Clients are the equity investors and participate in proportion to their ownership percentage in the net income or loss and net capital gains or losses of the products, and, on liquidation, will participate in proportion to their ownership percentage in the remaining net assets of the products after satisfaction of outstanding liabilities. The Company has concluded that it is not the primary beneficiary of the entities and, therefore, is not required to consolidate any of the pooled investment vehicles for which it receives asset management, distribution, administration and custodial fees under the VIE model.
Revenue Recognition	Revenue RecognitionRevenue is recognized when the transfer of control of promised goods or services under the terms of a contract with customers are satisfied in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those promised goods or services. Certain portions of the Company’s revenues involve a third party in providing goods or services to its customers. In such circumstances, the Company must determine whether the nature of its promise to the customer is to provide the underlying goods or services (the Company is the principal in the transaction and reports the transaction gross) or to arrange for a third party to provide the underlying goods or services (the entity is the agent in the transaction and reports the transaction net).The Company’s principal sources of revenues are: (1) asset management, administration and distribution fees primarily earned based upon a contractual percentage of net assets under management or administration; and (2) information processing and software servicing fees that are either recurring and primarily earned based upon the number of trust accounts being serviced or a percentage of the market value of the clients' assets processed on the Company's platforms, or non-recurring and based upon project-oriented contractual agreements related to client implementations. Investment management fees from pooled investment products - Revenues associated with clients' assets invested in Company-sponsored pooled investment products. Contractual fees are stated as a percentage of the market value of assets under management and collected on a monthly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations. Investment management fees from investment management agreements - Revenues based on assets of clients of the Institutional Investors segment primarily invested in Company-sponsored products. Each client is charged an investment management fee that is stated as a percentage of the market value of all assets under management. The client is billed directly on a quarterly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations. Revenues associated with the separately managed account program offered through registered investment advisors located throughout the United States. The contractual fee is stated as a percentage of the market value of all assets invested in the separately managed account and collected on a quarterly basis. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations. Investment operations fees - Revenues earned from accounting and administrative services, distribution support services and regulatory and compliance services to investment management firms and family offices. The Company contracts directly with the investment management firm or family office. The contractual fees are stated as a percentage of net assets under administration and billed when asset valuations are finalized. Revenues are recognized in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations. Investment processing fees - Platform as a Service - Revenues associated with clients that outsource their entire investment operation and back-office processing functions. Through the use of the Company's proprietary platforms, the Company assumes all back-office investment processing services including investment processing, custody and safekeeping of assets, income collections, securities settlement and other related trust activities. The contractual fee is based on a monthly fee plus additional fees determined on a per-account or per-transaction basis. Contractual fees can also be stated as a percentage of the value of assets processed on the Company's platforms each month as long as the fee is in excess of a monthly contractual minimum. The client is billed directly on a monthly basis. Revenues are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations. Investment processing fees - Software as a Service - Revenues associated with clients that outsource investment processing technology software and computer processing by accessing the Company's proprietary software and data center remotely but retain responsibility for all investment operations, client administration and other back-office trust operations. The contractual fee is based on a monthly fee plus additional fees determined on a per-account or per-transaction basis. The client is billed directly on a monthly basis. Revenues associated with portfolio intelligence and workflow solutions offered to clients of the Institutional Investors segment and revenues associated with technology and outsourced services that support the accounting, investment management, and reporting functions for family offices and their service providers offered to clients of the Investment Managers segment. The contractual fee is primarily based on an annual fixed fee for software licenses and data management services. The client is billed in advance with various billing terms. Revenue recorded in advance of the performance of services is deferred and recognized when earned. Revenues are recognized in Information processing and software servicing fees on the accompanying Consolidated Statements of Operations. Professional services fees - Revenues associated with the business services migration for investment processing clients of the Private Banks segment and investment operations clients of the Investment Managers segment. In addition, Professional services include other services such as business transformation consulting. Typically, fees are stated as a contractual fixed fee. The client is billed directly and fees are collected according to the terms of the agreement.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents includes $299,843 and $290,256 at March 31, 2022 and December 31, 2021, respectively, primarily invested in SEI-sponsored open-ended money market mutual funds. Statements of Cash Flows For purposes of the Consolidated Statements of Cash Flows, the Company considers investment instruments purchased with an original maturity of three months or less to be cash equivalents.
Restricted Cash	Restricted CashRestricted cash includes $250 at March 31, 2022 and December 31, 2021 segregated for regulatory purposes related to trade-execution services conducted by SEI Investments (Europe) Limited. Restricted cash also includes $101 at March 31, 2022 and December 31, 2021 segregated in special reserve accounts for the benefit of customers of the Company’s broker-dealer subsidiary, SEI Investments Distribution Co. (SIDCO), in accordance with certain rules established by the Securities and Exchange Commission (SEC) for broker-dealers.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In July 2021, the FASB issued ASU 2021-05, Leases (Topic 842): Lessors – Certain Leases with Variable Lease Payments (ASU 2021-05) which requires a lessor to classify a lease with entirely or partially variable payments that do not depend on an index or rate as an operating lease if a different classification would result in a commencement date selling loss (Day 1 loss). The Company adopted ASU 2021-05 on January 1, 2022. There was no material impact to the Company's consolidated financial statements from the implementation of ASU 2021-05.
Equity Method Investments	The Company accounts for its interest in LSV using the equity method because of its less than 50% ownership. The Company’s interest in the net assets of LSV is reflected in Investment in unconsolidated affiliate on the accompanying Consolidated Balance Sheets and its interest in the earnings of LSV is reflected in Equity in earnings of unconsolidated affiliate on the accompanying Consolidated Statements of Operations.
Fair Value of Financial Instruments	The fair value of the Company’s financial assets and liabilities, except for the Company's investment funds sponsored by LSV, is determined in accordance with the fair value hierarchy. The fair value of the Company’s Level 1 financial assets consist mainly of investments in open-ended mutual funds that are quoted daily. Level 2 financial assets consist of GNMA mortgage-backed securities held by the Company's wholly-owned limited purpose federal thrift subsidiary, SEI Private Trust Company (SPTC), Federal Home Loan Bank (FHLB) and other U.S. government agency short-term notes held by SIDCO. The financial assets held by SIDCO were purchased as part of a cash management program requiring only short term, top-tier investment grade government and corporate securities. The financial assets held by SPTC are debt securities issued by GNMA and are backed by the full faith and credit of the U.S. government. These securities were purchased for the sole purpose of satisfying applicable regulatory requirements and have maturity dates which range from 2023 to 2041. The fair value of the Company's investment funds sponsored by LSV is measured using the net asset value per share (NAV) as a practical expedient. The NAVs of the funds are calculated by the funds' independent custodian and are derived from the fair values of the underlying investments as of the reporting date. The funds allow for investor redemptions at the end of each calendar month. This investment has not been classified in the fair value hierarchy but is presented in the tables below to permit reconciliation to the amounts presented on the accompanying Consolidated Balance Sheets. The valuation of the Company's Level 2 financial assets held by SIDCO and SPTC are based upon securities pricing policies and procedures utilized by third-party pricing vendors.
Investments in Affiliated Funds	The fair value of the Company's investment funds sponsored by LSV is measured using the net asset value per share (NAV) as a practical expedient. The NAVs of the funds are calculated by the funds' independent custodian and are derived from the fair values of the underlying investments as of the reporting date. The funds allow for investor redemptions at the end of each calendar month. This investment has not been classified in the fair value hierarchy but is presented in the tables below to permit reconciliation to the amounts presented on the accompanying Consolidated Balance Sheets.
Available-for-sale Securities	These net unrealized losses are reported as a separate component of Accumulated other comprehensive loss on the accompanying Consolidated Balance Sheets.
Securities Owned	The Company’s broker-dealer subsidiary, SIDCO, has investments in U.S. government agency securities with maturity dates less than one year. These investments are reflected as Securities owned on the accompanying Consolidated Balance Sheets. Due to specialized accounting practices applicable to investments by broker-dealers, the securities are reported at fair value and changes in fair value are recorded in current period earnings.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Schedule of Calculation of Basic and Diluted Earnings Per Share	The calculations of basic and diluted earnings per share for the three months ended March 31, 2022 and 2021 are: Three Months Ended March 31, 2022 2021 Net income $ 190,308 $ 129,470 Shares used to compute basic earnings per common share 137,935,000 143,201,000 Dilutive effect of stock options 1,777,000 2,105,000 Shares used to compute diluted earnings per common share 139,712,000 145,306,000 Basic earnings per common share $ 1.38 $ 0.90 Diluted earnings per common share $ 1.36 $ 0.89
Schedule of Adjustments To Reconcile Net Income To Net Cash Provided By Operating Activities	The following table provides the details of the adjustments to reconcile net income to net cash provided by operating activities for the three months ended March 31: 2022 2021 Net income $ 190,308 $ 129,470 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation 8,098 8,309 Amortization 16,887 14,352 Equity in earnings of unconsolidated affiliate (32,459) (33,350) Distributions received from unconsolidated affiliate 32,961 28,774 Stock-based compensation 10,566 9,752 Provision for losses on receivables (214) 1,207 Deferred income tax expense (10,908) (3,915) Net loss (gain) from investments 489 (332) Change in other long-term liabilities 1,138 1,043 Change in other assets (706) 507 Contract costs capitalized, net of amortization 389 351 Other 1,228 992 Change in current assets and liabilities (Increase) decrease in Receivables from investment products 1,452 (2,020) Receivables 3,979 (22,016) Other current assets (2,556) (4,113) Advances due from unconsolidated affiliate 54,636 51,266 (Decrease) increase in Accounts payable (2,273) (2,237) Accrued liabilities (18,078) (41,717) Deferred revenue 5,490 250 Total adjustments 70,119 7,103 Net cash provided by operating activities $ 260,427 $ 136,573

Investment In Unconsolidated _2

Investment In Unconsolidated Affiliate (Tables)	3 Months Ended
	Mar. 31, 2022
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Equity Method Investments	These tables contain condensed financial information of LSV: Condensed Statement of Operations Three Months Ended March 31, 2022 2021 Revenues $ 108,450 $ 110,837 Net income 83,791 85,920 Condensed Balance Sheets March 31, 2022 December 31, 2021 Current assets $ 128,362 $ 171,058 Non-current assets 5,028 4,792 Total assets $ 133,390 $ 175,850 Current liabilities $ 41,767 $ 82,858 Non-current liabilities 3,665 3,863 Partners’ capital 87,958 89,129 Total liabilities and partners’ capital $ 133,390 $ 175,850

Composition of Certain Financ_2

Composition of Certain Financial Statement Captions (Tables)	3 Months Ended
	Mar. 31, 2022
Items Included in Consolidated Statement of Financial Condition [Abstract]
Schedule of Receivables	Receivables on the accompanying Consolidated Balance Sheets consist of: March 31, 2022 December 31, 2021 Trade receivables $ 101,117 $ 111,209 Fees earned, not billed 330,678 315,255 Other receivables 7,437 16,747 439,232 443,211 Less: Allowance for doubtful accounts (1,388) (1,602) $ 437,844 $ 441,609
Schedule of Property And Equipment	Property and Equipment on the accompanying Consolidated Balance Sheets consists of: March 31, 2022 December 31, 2021 Buildings $ 209,834 $ 209,766 Equipment 161,426 153,158 Land 25,825 24,651 Purchased software 156,529 156,387 Furniture and fixtures 21,328 21,254 Leasehold improvements 21,564 21,946 Construction in progress 993 955 597,499 588,117 Less: Accumulated depreciation (417,041) (409,248) Property and Equipment, net $ 180,458 $ 178,869
Schedule of Accrued Liabilities	Accrued liabilities on the accompanying Consolidated Balance Sheets consist of: March 31, 2022 December 31, 2021 Accrued employee compensation $ 42,053 $ 107,933 Accrued employee benefits and other personnel 7,117 13,951 Accrued consulting, outsourcing and professional fees 44,175 36,411 Accrued sub-advisory, distribution and other asset management fees 58,087 58,661 Accrued dividend payable — 55,452 Accrued income taxes 55,278 — Other accrued liabilities 43,758 51,974 Total accrued liabilities $ 250,468 $ 324,382

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Schedule of Fair Value Of Certain Financial Assets And Liabilities	The fair value of certain financial assets of the Company was determined using the following inputs: Fair Value Measurements at the End of the Reporting Period Using Assets March 31, 2022 Quoted Prices in Significant Equity securities $ 11,903 $ 11,903 $ — Available-for-sale debt securities 122,814 — 122,814 Fixed-income securities owned 31,258 — 31,258 Investment funds sponsored by LSV (1) 7,270 $ 173,245 $ 11,903 $ 154,072 Fair Value Measurements at the End of the Reporting Period Using Assets December 31, 2021 Quoted Prices in Significant Equity securities $ 12,406 $ 12,406 $ — Available-for-sale debt securities 117,135 — 117,135 Fixed-income securities owned 28,267 — 28,267 Investment funds sponsored by LSV (1) 6,916 $ 164,724 $ 12,406 $ 145,402

Marketable Securities (Tables)

Marketable Securities (Tables)	3 Months Ended
	Mar. 31, 2022
Marketable Securities [Abstract]
Schedule of Available For Sale and Equity Securities	Available For Sale and Equity Securities on the accompanying Consolidated Balance Sheets consist of: At March 31, 2022 Cost Gross Gross Fair Available-for-sale debt securities $ 127,804 $ — $ (4,990) $ 122,814 SEI-sponsored mutual funds 6,353 505 (21) 6,837 Equities and other mutual funds 4,837 229 — 5,066 $ 138,994 $ 734 $ (5,011) $ 134,717 At December 31, 2021 Cost Gross Gross Fair Available-for-sale debt securities $ 117,215 $ — $ (80) $ 117,135 SEI-sponsored mutual funds 6,748 463 — 7,211 Equities and other mutual funds 4,935 260 — 5,195 $ 128,898 $ 723 $ (80) $ 129,541

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2022
Stockholders' Equity Note [Abstract]
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan	The Company recognized stock-based compensation expense in its Consolidated Financial Statements in the three months ended March 31, 2022 and 2021, respectively, as follows: Three Months Ended March 31, 2022 2021 Stock-based compensation expense $ 10,566 $ 9,752 Less: Deferred tax benefit (2,096) (1,854) Stock-based compensation expense, net of tax $ 8,470 $ 7,898

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule Of Accumulated Other Comprehensive Income (Loss), Net Of Tax	The components of Accumulated other comprehensive loss, net of tax, are as follows: Foreign Currency Translation Adjustments Unrealized Accumulated Other Comprehensive Loss Balance, January 1, 2022 $ (19,781) $ (62) $ (19,843) Other comprehensive loss before reclassifications (4,558) (3,969) (8,527) Amounts reclassified from accumulated other comprehensive loss — 189 189 Net current-period other comprehensive loss (4,558) (3,780) (8,338) Balance, March 31, 2022 $ (24,339) $ (3,842) $ (28,181)

Business Segment Information (T

Business Segment Information (Tables)	3 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Schedule Of Financial Information About Business Segments	The following tables highlight certain financial information about each of the business segments for the three months ended March 31, 2022 and 2021: Private Banks Investment Institutional Investment Investments Total For the Three Months Ended March 31, 2022 Revenues $ 213,548 $ 119,230 $ 86,839 $ 156,901 $ 4,925 $ 581,443 Expenses 121,955 64,520 45,358 98,837 11,950 342,620 Operating profit (loss) $ 91,593 $ 54,710 $ 41,481 $ 58,064 $ (7,025) $ 238,823 Private Investment Institutional Investment Investments Total For the Three Months Ended March 31, 2021 Revenues $ 117,608 $ 113,294 $ 84,499 $ 136,419 $ 3,866 $ 455,686 Expenses 110,724 55,027 39,158 83,020 13,404 301,333 Operating profit (loss) $ 6,884 $ 58,267 $ 45,341 $ 53,399 $ (9,538) $ 154,353
Schedule of Reconciliation of Total Operating Profit Reported for Business Segments to Income from Operations in Consolidated Statements of Operations	A reconciliation of the total operating profit reported for the business segments to income from operations in the Consolidated Statements of Operations for the three months ended March 31, 2022 and 2021 is as follows: 2022 2021 Total operating profit from segments $ 238,823 $ 154,353 Corporate overhead expenses (24,024) (21,516) Income from operations $ 214,799 $ 132,837
Schedule of Additional Information Pertaining to Business Segments	The following tables provide additional information for the three months ended March 31, 2022 and 2021 pertaining to the business segments: Capital Expenditures (1) Depreciation 2022 2021 2022 2021 Private Banks $ 7,222 $ 5,829 $ 5,106 $ 4,132 Investment Advisors 3,027 2,308 456 1,289 Institutional Investors 949 511 289 358 Investment Managers 4,024 1,631 2,020 2,053 Investments in New Businesses 205 139 44 146 Total from business segments $ 15,427 $ 10,418 $ 7,915 $ 7,978 Corporate overhead 445 160 183 331 $ 15,872 $ 10,578 $ 8,098 $ 8,309 (1) Capital expenditures include additions to property and equipment and capitalized software. Amortization 2022 2021 Private Banks $ 8,539 $ 8,576 Investment Advisors 3,233 2,627 Institutional Investors 2,283 426 Investment Managers 2,576 2,480 Investments in New Businesses 185 185 Total from business segments $ 16,816 $ 14,294 Corporate overhead 71 58 $ 16,887 $ 14,352

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Schedule Of Interest And Penalties	March 31, 2022 December 31, 2021 Gross liability for unrecognized tax benefits, exclusive of interest and penalties $ 15,768 $ 14,887 Interest and penalties on unrecognized benefits 1,445 1,338 Total gross uncertain tax positions $ 17,213 $ 16,225 Amount included in Current liabilities $ 4,272 $ 4,253 Amount included in Other long-term liabilities 12,941 11,972 $ 17,213 $ 16,225
Schedule of Effective Income Tax Rate Reconciliation	The effective income tax rate for the three months ended March 31, 2022 and 2021 differs from the federal income tax statutory rate due to the following: Three Months Ended March 31, 2022 2021 Statutory rate 21.0 % 21.0 % State taxes, net of federal tax benefit 2.9 3.1 Foreign tax expense and tax rate differential (0.1) (0.1) Tax benefit from stock option exercises (0.4) (1.1) Other, net (0.3) (0.3) 23.1 % 22.6 %

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The changes in the carrying amount of the Company's goodwill by segment are as follows: Institutional Investors Investment Managers Investments in New Businesses Total Balance, December 31, 2021 $ 48,911 $ 56,822 $ 11,499 $ 117,232 Measurement period adjustments — 211 — 211 Foreign currency translation adjustments — (9) — (9) Balance, March 31, 2022 $ 48,911 $ 57,024 $ 11,499 $ 117,434

Revenues from Contracts with _2

Revenues from Contracts with Customers (Tables)	3 Months Ended
	Mar. 31, 2022
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The following tables provide additional information pertaining to our revenues disaggregated by major product line and primary geographic market based on the location of the use of the products or services for each of the business segments for the three months ended March 31, 2022 and 2021: Private Banks Investment Institutional Investment Investments Total Major Product Lines: For the Three Months Ended March 31, 2022 Investment management fees from pooled investment products $ 33,118 $ 71,993 $ 13,866 $ 84 $ 367 $ 119,428 Investment management fees from investment management agreements 255 42,008 68,460 — 4,126 114,849 Investment operations fees 360 — — 145,379 — 145,739 Investment processing fees - PaaS 56,455 — — — — 56,455 Investment processing fees - SaaS 29,559 — 3,110 3,658 — 36,327 Professional services fees (1) 92,729 — — 389 — 93,118 Account fees and other 1,072 5,229 1,403 7,391 432 15,527 Total revenues $ 213,548 $ 119,230 $ 86,839 $ 156,901 $ 4,925 $ 581,443 Primary Geographic Markets: United States $ 80,886 $ 119,230 $ 70,563 $ 144,025 $ 4,925 $ 419,629 United Kingdom 116,663 — 12,749 — — 129,412 Canada 11,800 — 1,242 — — 13,042 Ireland 4,199 — 2,167 9,822 — 16,188 Luxembourg — — — 3,054 — 3,054 Other — — 118 — — 118 Total revenues $ 213,548 $ 119,230 $ 86,839 $ 156,901 $ 4,925 $ 581,443 (1) Professional services fees of the Private Banks segment includes one-time early termination fees of $88,000 related to a contractual agreement with a significant client of the Company. In accordance with Accounting Standards Codification 606, the entire amount of the fees received were recorded during the three months ended March 31, 2022 as there were no future performance obligations of the Company related to the agreement upon termination. Private Investment Institutional Investment Investments Total Major Product Lines: For the Three Months Ended March 31, 2021 Investment management fees from pooled investment products $ 32,564 $ 72,654 $ 14,088 $ 59 $ 329 $ 119,694 Investment management fees from investment management agreements 473 34,714 69,943 — 3,386 108,516 Investment operations fees 369 — — 125,161 — 125,530 Investment processing fees - PaaS 50,876 — — — — 50,876 Investment processing fees - SaaS 27,810 — — 3,706 — 31,516 Professional services fees 4,407 — — 1,147 — 5,554 Account fees and other 1,109 5,926 468 6,346 151 14,000 Total revenues $ 117,608 $ 113,294 $ 84,499 $ 136,419 $ 3,866 $ 455,686 Primary Geographic Markets: United States $ 75,095 $ 113,294 $ 66,720 $ 127,016 $ 3,866 $ 385,991 United Kingdom 26,665 — 13,729 — — 40,394 Canada 11,482 — 1,302 — — 12,784 Ireland 4,366 — 2,619 9,403 — 16,388 Other — — 129 — — 129 Total revenues $ 117,608 $ 113,294 $ 84,499 $ 136,419 $ 3,866 $ 455,686

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Summary of Significant Accounting Policies [Line Items]
Cash and cash equivalents invested in SEI-sponsored money market funds	$ 907,831		$ 831,407
Restricted cash	351		351
Capitalized software development costs	6,589	$ 6,360
Net book value of capitalized software	$ 236,481		243,446
Anti-dilutive employee stock options (in shares)	12,218	11,715
Anti-dilutive employee stock options (in USD per share)	$ 60.28	$ 57.99
SEI Wealth Platform
Summary of Significant Accounting Policies [Line Items]
Net book value of capitalized software	$ 230,363
Capitalized software in progress	31,108		29,253
Amortization expense related to the SEI Wealth Platform	$ 12,104	$ 11,923
SEI Wealth Platform | Weighted Average
Summary of Significant Accounting Policies [Line Items]
Estimated useful life of the SEI Wealth Platform	10 years 2 months 12 days
SEI-Sponsored Open-Ended Money Market Mutual Funds
Summary of Significant Accounting Policies [Line Items]
Cash and cash equivalents invested in SEI-sponsored money market funds	$ 299,843		290,256
SEI Investments (Europe) Limited
Summary of Significant Accounting Policies [Line Items]
Restricted cash	250		250
SEI Investments Distribution Co. (SIDCO)
Summary of Significant Accounting Policies [Line Items]
Restricted cash	101		$ 101
SEI-Sponsored Open-Ended Money Market Mutual Funds
Summary of Significant Accounting Policies [Line Items]
Fees waived	$ 11,185	$ 10,233

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounting Policies [Abstract]
Net income	$ 190,308	$ 129,470
Shares used to compute basic earnings per common share (in shares)	137,935	143,201
Dilutive effect of stock options (in shares)	1,777	2,105
Shares used to compute diluted earnings per common share (in shares)	139,712	145,306
Basic earnings per common share (in USD per share)	$ 1.38	$ 0.90
Diluted earnings per common share (in USD per share)	$ 1.36	$ 0.89

Summary of Significant Accoun_6

Summary of Significant Accounting Policies (Net Cash Provided by Operating Activities) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounting Policies [Abstract]
Net income	$ 190,308	$ 129,470
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	8,098	8,309
Amortization	16,887	14,352
Equity in earnings of unconsolidated affiliate	(32,459)	(33,350)
Distributions received from unconsolidated affiliate	32,961	28,774
Stock-based compensation	10,566	9,752
Provision for losses on receivables	(214)	1,207
Deferred income tax expense	(10,908)	(3,915)
Net loss (gain) from investments	489	(332)
Change in other long-term liabilities	1,138	1,043
Change in other assets	(706)	507
Contract costs capitalized, net of amortization	389	351
Other	1,228	992
Change in current assets and liabilities (Increase) decrease in
Receivables from investment products	1,452	(2,020)
Receivables	3,979	(22,016)
Other current assets	(2,556)	(4,113)
Advances due from unconsolidated affiliate	54,636	51,266
(Decrease) increase in
Accounts payable	(2,273)	(2,237)
Accrued liabilities	(18,078)	(41,717)
Deferred revenue	5,490	250
Total adjustments	70,119	7,103
Net cash provided by operating activities	$ 260,427	$ 136,573

Investment In Unconsolidated _3

Investment In Unconsolidated Affiliate (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Apr. 01, 2021
Investments in and Advances to Affiliates [Line Items]
Distributions received from LSV	$ 32,961	$ 28,774
Company's share in the earnings of LSV	$ 32,459	33,350
LSV Asset Management
Investments in and Advances to Affiliates [Line Items]
Ownership interest in LSV	38.70%		38.60%
Total investment in LSV	$ 52,778
Distributions received from LSV	32,961	28,774
Company's share in the earnings of LSV	$ 32,459	$ 33,350

Investment In Unconsolidated _4

Investment In Unconsolidated Affiliate (Condensed Statements of Operations of LSV) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Schedule of Equity Method Investments [Line Items]
Revenues	$ 581,443	$ 455,686
Equity Method Investment, Nonconsolidated Investee | LSV Asset Management
Schedule of Equity Method Investments [Line Items]
Revenues	108,450	110,837
Net income	$ 83,791	$ 85,920

Investment in Unconsolidated _5

Investment in Unconsolidated Affiliate (Condensed Balance Sheets of LSV) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Current assets	$ 1,480,983	$ 1,404,229
Total Assets	2,372,606	2,354,702
Current liabilities	285,146	355,743
Total Liabilities and Shareholders' Equity	2,372,606	2,354,702
Equity Method Investment, Nonconsolidated Investee | LSV Asset Management
Schedule of Equity Method Investments [Line Items]
Current assets	128,362	171,058
Non-current assets	5,028	4,792
Total Assets	133,390	175,850
Current liabilities	41,767	82,858
Non-current liabilities	3,665	3,863
Partners’ capital	87,958	89,129
Total Liabilities and Shareholders' Equity	$ 133,390	$ 175,850

Composition of Certain Financ_3

Composition of Certain Financial Statement Captions (Receivables) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Items Included in Consolidated Statement of Financial Condition [Abstract]
Trade receivables	$ 101,117	$ 111,209
Fees earned, not billed	330,678	315,255
Other receivables	7,437	16,747
Gross receivables	439,232	443,211
Less: Allowance for doubtful accounts	(1,388)	(1,602)
Receivables, net	$ 437,844	$ 441,609

Composition of Certain Financ_4

Composition of Certain Financial Statement Captions (Property And Equipment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Property and Equipment [Line Items]
Property and equipment, gross	$ 597,499		$ 588,117
Less: Accumulated depreciation	(417,041)		(409,248)
Property and Equipment, net	180,458		178,869
Depreciation expense	8,098	$ 8,309
Buildings
Property and Equipment [Line Items]
Property and equipment, gross	209,834		209,766
Equipment
Property and Equipment [Line Items]
Property and equipment, gross	161,426		153,158
Land
Property and Equipment [Line Items]
Property and equipment, gross	25,825		24,651
Purchased software
Property and Equipment [Line Items]
Property and equipment, gross	156,529		156,387
Furniture and fixtures
Property and Equipment [Line Items]
Property and equipment, gross	21,328		21,254
Leasehold improvements
Property and Equipment [Line Items]
Property and equipment, gross	21,564		21,946
Construction in progress
Property and Equipment [Line Items]
Property and equipment, gross	$ 993		$ 955

Composition of Certain Financ_5

Composition of Certain Financial Statement Captions (Deferred Contract Costs) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Items Included in Consolidated Statement of Financial Condition [Abstract]
Deferred contract costs	$ 35,847,000		$ 36,236,000
Capitalized contract cost, amount capitalized during period	3,519,000	$ 2,372,000
Amortization of deferred contract costs	3,908,000	$ 2,723,000
Accelerated amortization of deferred contract costs	1,784,000
Capitalized contract cost impairment	$ 0

Composition of Certain Financ_6

Composition of Certain Financial Statement Captions (Accrued Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Items Included in Consolidated Statement of Financial Condition [Abstract]
Accrued employee compensation	$ 42,053	$ 107,933
Accrued employee benefits and other personnel	7,117	13,951
Accrued consulting, outsourcing and professional fees	44,175	36,411
Accrued sub-advisory, distribution and other asset management fees	58,087	58,661
Accrued dividend payable	0	55,452
Accrued income taxes	55,278	0
Other accrued liabilities	43,758	51,974
Total accrued liabilities	$ 250,468	$ 324,382

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed-income securities owned	$ 31,258	$ 28,267
Assets, fair value	173,245	164,724
Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed-income securities owned	0	0
Assets, fair value	11,903	12,406
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed-income securities owned	31,258	28,267
Assets, fair value	154,072	145,402
Equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	11,903	12,406
Equity securities | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	11,903	12,406
Equity securities | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	0	0
Available-for-sale debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	122,814	117,135
Available-for-sale debt securities | Quoted Prices in Active  Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	0	0
Available-for-sale debt securities | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	122,814	117,135
Investment Funds Sponsored by LSV
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment funds sponsored by LSV	$ 7,270	$ 6,916

Marketable Securities (Narrativ

Marketable Securities (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Schedule of Investments [Line Items]
Cash equivalents at fair value	$ 422,635,000		$ 422,838,000
Net unrealized gains (loss)	(3,842,000)		(62,000)
Net unrealized gains (losses) income tax expense (benefit)	(1,148,000)		(18,000)
Available-for-sale securities, gross realized gains	0	$ 0
Mutual funds and equities, gross realized gains	5,000
Mutual funds and equities, gross realized loss	579,000
Other long-term investments	52,778,000		107,918,000
Securities owned	31,258,000		28,267,000
Available-for-sale debt securities
Schedule of Investments [Line Items]
Available-for-sale securities, gross realized losses	246,000	327,000
Investment Funds Sponsored by LSV
Schedule of Investments [Line Items]
Other long-term investments	7,270,000		$ 6,916,000
Unrealized gains (losses) on investments	$ 354,000	$ 457,000

Marketable Securities (Investme

Marketable Securities (Investments Available For Sale) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Available For Sale and Equity Securities, Cost	$ 138,994	$ 128,898
Available For Sale and Equity Securities, Gross Unrealized Gains	734	723
Available For Sale and Equity Securities, Gross Unrealized (Losses)	(5,011)	(80)
Available For Sale and Equity Securities, Fair Value	134,717	129,541
Available-for-sale debt securities
Debt Securities, Available-for-sale [Line Items]
Available for sale debt securities, Cost	127,804	117,215
Available for sale debt securities, Gross Unrealized Gains	0	0
Available for sale debt securities, Gross Unrealized (Losses)	(4,990)	(80)
Available for sale debt securities, Fair Value	122,814	117,135
SEI-sponsored mutual funds
Debt Securities, Available-for-sale [Line Items]
Equity securities, FV-NI, Cost	6,353	6,748
Equity securities, FV-NI, Gross Unrealized Gains	505	463
Equity securities, FV-NI, Gross Unrealized (Losses)	(21)	0
Equity securities, FV-NI, Fair Value	6,837	7,211
Equities and other mutual funds
Debt Securities, Available-for-sale [Line Items]
Equity securities, FV-NI, Cost	4,837	4,935
Equity securities, FV-NI, Gross Unrealized Gains	229	260
Equity securities, FV-NI, Gross Unrealized (Losses)	0	0
Equity securities, FV-NI, Fair Value	$ 5,066	$ 5,195

Line of Credit (Details)

Line of Credit (Details)	Apr. 23, 2021USD ($)fiscalQuarter	Feb. 22, 2022USD ($)	Nov. 30, 2021USD ($)	Mar. 31, 2022USD ($)	Mar. 31, 2021USD ($)	Apr. 21, 2022USD ($)	Dec. 31, 2021USD ($)
Line of Credit Facility [Line Items]
Repayments under revolving credit facility				$ 10,000,000	$ 0
Borrowings Under Revolving Credit Facility				30,000,000			$ 40,000,000
2021 Credit Facility
Line of Credit Facility [Line Items]
Debt interest rate accrual term, number of preceding fiscal quarters | fiscalQuarter	4
2021 Credit Facility | Subsequent Event
Line of Credit Facility [Line Items]
Letters of credit outstanding amount						$ 6,264,000
2021 Credit Facility | Line of Credit
Line of Credit Facility [Line Items]
Credit facility term of agreement	5 years
Credit facility maximum borrowing capacity	$ 325,000,000
Credit facility stated percentage	0.00%
Credit facility accordion feature, increase limit	$ 100,000,000
Credit facility borrowings			$ 40,000,000
Repayments under revolving credit facility		$ 10,000,000
Borrowings Under Revolving Credit Facility				$ 30,000,000
2021 Credit Facility | Line of Credit | Subsequent Event
Line of Credit Facility [Line Items]
Credit facility remaining borrowing capacity						$ 288,736,000
2021 Credit Facility | Line of Credit | London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	1.00%
2021 Credit Facility | Line of Credit | Federal Funds Rate
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	0.50%
2021 Credit Facility | Line of Credit | Minimum
Line of Credit Facility [Line Items]
Credit facility commitment fee per annum on daily unused portion	0.15%
2021 Credit Facility | Line of Credit | Minimum | Lender's Base Rate Plus Market Spread
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	0.25%
2021 Credit Facility | Line of Credit | Minimum | London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	1.25%
2021 Credit Facility | Line of Credit | Maximum
Line of Credit Facility [Line Items]
Credit facility commitment fee per annum on daily unused portion	0.30%
2021 Credit Facility | Line of Credit | Maximum | Lender's Base Rate Plus Market Spread
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	1.00%
2021 Credit Facility | Line of Credit | Maximum | London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Credit facility variable interest rate basis spread	2.00%
2021 Credit Facility | Letter of Credit
Line of Credit Facility [Line Items]
Credit facility maximum borrowing capacity	$ 15,000,000
Credit facility, commitment fee percentage	1.25%
Credit facility, fronting fee percentage	0.20%

Shareholders' Equity (Narrative

Shareholders' Equity (Narrative) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 92,057
Total intrinsic value of options exercised	8,966
Aggregate intrinsic value of options exercisable	$ 103,527
Market value of Company's common stock (in USD per share) | $ / shares	$ 60.21
Weighted average exercise price per share (in USD per share) | $ / shares	$ 49.16
Total options outstanding (in shares) | shares	18,467
Total options exercisable (in shares) | shares	8,153
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Common Stock Buyback
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased and retired (in shares) | shares	1,713
Company purchased, cost	$ 100,090
Remaining stock repurchase authorization amount	$ 131,203
2014 Plan | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate	50.00%
2014 Plan | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate	50.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award waiting period	2 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award waiting period	4 years

Shareholders' Equity (Stock-Bas

Shareholders' Equity (Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Stockholders' Equity Note [Abstract]
Stock-based compensation expense	$ 10,566	$ 9,752
Less: Deferred tax benefit	(2,096)	(1,854)
Stock-based compensation expense, net of tax	$ 8,470	$ 7,898

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 1,860,763	$ 1,739,907
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Other comprehensive loss before reclassifications	(8,527)
Amounts reclassified from accumulated other comprehensive loss	189
Total other comprehensive (loss) income, net of tax	(8,338)	1,395
Ending balance	1,973,083	1,829,108
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(19,781)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Other comprehensive loss before reclassifications	(4,558)
Amounts reclassified from accumulated other comprehensive loss	0
Total other comprehensive (loss) income, net of tax	(4,558)
Ending balance	(24,339)
Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(62)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Other comprehensive loss before reclassifications	(3,969)
Amounts reclassified from accumulated other comprehensive loss	189
Total other comprehensive (loss) income, net of tax	(3,780)
Ending balance	(3,842)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(19,843)	(16,798)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Total other comprehensive (loss) income, net of tax	(8,338)	1,395
Ending balance	$ (28,181)	$ (15,403)

Business Segment Information (N

Business Segment Information (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Revenues	$ 581,443,000	$ 455,686,000
Intersegment
Segment Reporting Information [Line Items]
Revenues	$ 0	$ 0

Business Segment Information (S

Business Segment Information (Schedule of Financial Information About Business Segments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Revenues	$ 581,443	$ 455,686
Expenses	342,620	301,333
Operating profit (loss)	238,823	154,353
Private Banks
Segment Reporting Information [Line Items]
Revenues	213,548	117,608
Expenses	121,955	110,724
Operating profit (loss)	91,593	6,884
Investment Advisors
Segment Reporting Information [Line Items]
Revenues	119,230	113,294
Expenses	64,520	55,027
Operating profit (loss)	54,710	58,267
Institutional Investors
Segment Reporting Information [Line Items]
Revenues	86,839	84,499
Expenses	45,358	39,158
Operating profit (loss)	41,481	45,341
Investment Managers
Segment Reporting Information [Line Items]
Revenues	156,901	136,419
Expenses	98,837	83,020
Operating profit (loss)	58,064	53,399
Investments In New Businesses
Segment Reporting Information [Line Items]
Revenues	4,925	3,866
Expenses	11,950	13,404
Operating profit (loss)	$ (7,025)	$ (9,538)

Business Segment Information (R

Business Segment Information (Reconciliation of Total Operating Profit) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting [Abstract]
Total operating profit from segments	$ 238,823	$ 154,353
Corporate overhead expenses	(24,024)	(21,516)
Income from operations	$ 214,799	$ 132,837

Business Segment Information _2

Business Segment Information (Schedule Of Additional Information Pertaining To Business Segments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Capital expenditure	$ 15,872	$ 10,578
Depreciation	8,098	8,309
Amortization	16,887	14,352
Operating Segments
Segment Reporting Information [Line Items]
Capital expenditure	15,427	10,418
Depreciation	7,915	7,978
Amortization	16,816	14,294
Operating Segments | Private Banks
Segment Reporting Information [Line Items]
Capital expenditure	7,222	5,829
Depreciation	5,106	4,132
Amortization	8,539	8,576
Operating Segments | Investment Advisors
Segment Reporting Information [Line Items]
Capital expenditure	3,027	2,308
Depreciation	456	1,289
Amortization	3,233	2,627
Operating Segments | Institutional Investors
Segment Reporting Information [Line Items]
Capital expenditure	949	511
Depreciation	289	358
Amortization	2,283	426
Operating Segments | Investment Managers
Segment Reporting Information [Line Items]
Capital expenditure	4,024	1,631
Depreciation	2,020	2,053
Amortization	2,576	2,480
Operating Segments | Investments In New Businesses
Segment Reporting Information [Line Items]
Capital expenditure	205	139
Depreciation	44	146
Amortization	185	185
Corporate
Segment Reporting Information [Line Items]
Capital expenditure	445	160
Depreciation	183	331
Amortization	$ 71	$ 58

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Income Tax Contingency [Line Items]
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$ 15,768	$ 14,887
Unrecognized tax benefits that would affect effective tax rate	15,251	14,382
Interest and penalties on unrecognized benefits	1,445	$ 1,338
Settlement and Lapse of Statute
Income Tax Contingency [Line Items]
Unrecognized tax benefits within the next twelve months	$ 4,272

Income Taxes (Interest And Pena

Income Taxes (Interest And Penalties) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$ 15,768	$ 14,887
Interest and penalties on unrecognized benefits	1,445	1,338
Total gross uncertain tax positions	17,213	16,225
Amount included in Current liabilities	4,272	4,253
Amount included in Other long-term liabilities	12,941	11,972
Total gross uncertain tax positions	$ 17,213	$ 16,225

Income Taxes (Effective Income

Income Taxes (Effective Income Tax Rate Reconciliation) (Details)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Statutory rate	21.00%	21.00%
State taxes, net of federal tax benefit	2.90%	3.10%
Foreign tax expense and tax rate differential	(0.10%)	(0.10%)
Tax benefit from stock option exercises	(0.40%)	(1.10%)
Other, net	(0.30%)	(0.30%)
Effective income tax rate	23.10%	22.60%

Commitments and Contingencies (

Commitments and Contingencies (Details) - lawsuit	Jan. 14, 2022	Mar. 31, 2022
Stanford Trust Company Litigation
Loss Contingencies [Line Items]
Number of actions filed		7
Stanford Trust Company Litigation, SPTC As Defendant
Loss Contingencies [Line Items]
Number of actions filed		4
Stanford Trust Company Litigation, Claims For Violations Of Louisiana Racketeering Act
Loss Contingencies [Line Items]
Number of actions filed		2
Stanford Trust Company Litigation, Federal Class Actions
Loss Contingencies [Line Items]
Number of actions filed		2
Stanford Trust Company Litigation, Ancillary Actions
Loss Contingencies [Line Items]
Number of dismissed actions	2
Number of actions filed		5
Number of lawsuits filed		2

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 117,232
Measurement period adjustments	211
Foreign currency translation adjustments	(9)
Goodwill, ending balance	117,434
Institutional Investors
Goodwill [Roll Forward]
Goodwill, beginning balance	48,911
Measurement period adjustments	0
Foreign currency translation adjustments	0
Goodwill, ending balance	48,911
Investment Managers
Goodwill [Roll Forward]
Goodwill, beginning balance	56,822
Measurement period adjustments	211
Foreign currency translation adjustments	(9)
Goodwill, ending balance	57,024
Investments In New Businesses
Goodwill [Roll Forward]
Goodwill, beginning balance	11,499
Measurement period adjustments	0
Foreign currency translation adjustments	0
Goodwill, ending balance	$ 11,499

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended
	Nov. 30, 2021	Oct. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Apr. 30, 2018
Goodwill [Line Items]
Goodwill			$ 117,434		$ 117,232
Payment of contingent consideration			868	$ 702
Amortization expense			3,253	921
Finomial
Goodwill [Line Items]
Goodwill acquired		$ 4,036
Novus Partners
Goodwill [Line Items]
Goodwill acquired	$ 48,911
Huntington Steele, LLC
Goodwill [Line Items]
Goodwill						$ 11,499
Payment of contingent consideration			868	$ 702
Contingent consideration, long-term			$ 9,011

Revenues from Contracts with _3

Revenues from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 581,443	$ 455,686
United States
Disaggregation of Revenue [Line Items]
Revenues	419,629	385,991
United Kingdom
Disaggregation of Revenue [Line Items]
Revenues	129,412	40,394
Canada
Disaggregation of Revenue [Line Items]
Revenues	13,042	12,784
Ireland
Disaggregation of Revenue [Line Items]
Revenues	16,188	16,388
Luxembourg
Disaggregation of Revenue [Line Items]
Revenues	3,054
Other
Disaggregation of Revenue [Line Items]
Revenues	118	129
Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Revenues	119,428	119,694
Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Revenues	114,849	108,516
Investment operations fees
Disaggregation of Revenue [Line Items]
Revenues	145,739	125,530
Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Revenues	56,455	50,876
Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Revenues	36,327	31,516
Professional services fees
Disaggregation of Revenue [Line Items]
Revenues	93,118	5,554
Account fees and other
Disaggregation of Revenue [Line Items]
Revenues	15,527	14,000
Private Banks
Disaggregation of Revenue [Line Items]
Revenues	213,548	117,608
Private Banks | United States
Disaggregation of Revenue [Line Items]
Revenues	80,886	75,095
Private Banks | United Kingdom
Disaggregation of Revenue [Line Items]
Revenues	116,663	26,665
Private Banks | Canada
Disaggregation of Revenue [Line Items]
Revenues	11,800	11,482
Private Banks | Ireland
Disaggregation of Revenue [Line Items]
Revenues	4,199	4,366
Private Banks | Luxembourg
Disaggregation of Revenue [Line Items]
Revenues	0
Private Banks | Other
Disaggregation of Revenue [Line Items]
Revenues	0	0
Private Banks | Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Revenues	33,118	32,564
Private Banks | Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Revenues	255	473
Private Banks | Investment operations fees
Disaggregation of Revenue [Line Items]
Revenues	360	369
Private Banks | Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Revenues	56,455	50,876
Private Banks | Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Revenues	29,559	27,810
Private Banks | Professional services fees
Disaggregation of Revenue [Line Items]
Revenues	92,729	4,407
Private Banks | Account fees and other
Disaggregation of Revenue [Line Items]
Revenues	1,072	1,109
Private Banks | Professional services fees, one-time early termination fees
Disaggregation of Revenue [Line Items]
Revenues	88,000
Investment Advisors
Disaggregation of Revenue [Line Items]
Revenues	119,230	113,294
Investment Advisors | United States
Disaggregation of Revenue [Line Items]
Revenues	119,230	113,294
Investment Advisors | United Kingdom
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Advisors | Canada
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Advisors | Ireland
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Advisors | Luxembourg
Disaggregation of Revenue [Line Items]
Revenues	0
Investment Advisors | Other
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Advisors | Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Revenues	71,993	72,654
Investment Advisors | Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Revenues	42,008	34,714
Investment Advisors | Investment operations fees
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Advisors | Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Advisors | Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Advisors | Professional services fees
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Advisors | Account fees and other
Disaggregation of Revenue [Line Items]
Revenues	5,229	5,926
Institutional Investors
Disaggregation of Revenue [Line Items]
Revenues	86,839	84,499
Institutional Investors | United States
Disaggregation of Revenue [Line Items]
Revenues	70,563	66,720
Institutional Investors | United Kingdom
Disaggregation of Revenue [Line Items]
Revenues	12,749	13,729
Institutional Investors | Canada
Disaggregation of Revenue [Line Items]
Revenues	1,242	1,302
Institutional Investors | Ireland
Disaggregation of Revenue [Line Items]
Revenues	2,167	2,619
Institutional Investors | Luxembourg
Disaggregation of Revenue [Line Items]
Revenues	0
Institutional Investors | Other
Disaggregation of Revenue [Line Items]
Revenues	118	129
Institutional Investors | Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Revenues	13,866	14,088
Institutional Investors | Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Revenues	68,460	69,943
Institutional Investors | Investment operations fees
Disaggregation of Revenue [Line Items]
Revenues	0	0
Institutional Investors | Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Revenues	0	0
Institutional Investors | Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Revenues	3,110	0
Institutional Investors | Professional services fees
Disaggregation of Revenue [Line Items]
Revenues	0	0
Institutional Investors | Account fees and other
Disaggregation of Revenue [Line Items]
Revenues	1,403	468
Investment Managers
Disaggregation of Revenue [Line Items]
Revenues	156,901	136,419
Investment Managers | United States
Disaggregation of Revenue [Line Items]
Revenues	144,025	127,016
Investment Managers | United Kingdom
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Managers | Canada
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Managers | Ireland
Disaggregation of Revenue [Line Items]
Revenues	9,822	9,403
Investment Managers | Luxembourg
Disaggregation of Revenue [Line Items]
Revenues	3,054
Investment Managers | Other
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Managers | Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Revenues	84	59
Investment Managers | Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Managers | Investment operations fees
Disaggregation of Revenue [Line Items]
Revenues	145,379	125,161
Investment Managers | Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investment Managers | Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Revenues	3,658	3,706
Investment Managers | Professional services fees
Disaggregation of Revenue [Line Items]
Revenues	389	1,147
Investment Managers | Account fees and other
Disaggregation of Revenue [Line Items]
Revenues	7,391	6,346
Investments In New Businesses
Disaggregation of Revenue [Line Items]
Revenues	4,925	3,866
Investments In New Businesses | United States
Disaggregation of Revenue [Line Items]
Revenues	4,925	3,866
Investments In New Businesses | United Kingdom
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investments In New Businesses | Canada
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investments In New Businesses | Ireland
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investments In New Businesses | Luxembourg
Disaggregation of Revenue [Line Items]
Revenues	0
Investments In New Businesses | Other
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investments In New Businesses | Investment management fees from pooled investment products
Disaggregation of Revenue [Line Items]
Revenues	367	329
Investments In New Businesses | Investment management fees from investment management agreements
Disaggregation of Revenue [Line Items]
Revenues	4,126	3,386
Investments In New Businesses | Investment operations fees
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investments In New Businesses | Investment processing fees - PaaS
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investments In New Businesses | Investment processing fees - SaaS
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investments In New Businesses | Professional services fees
Disaggregation of Revenue [Line Items]
Revenues	0	0
Investments In New Businesses | Account fees and other
Disaggregation of Revenue [Line Items]
Revenues	$ 432	$ 151