$SEIC
SEI INVESTMENTS CO Stock $seic

$seic Overview Financials Valuation SEC Filings Company Website

2022 Q2 Form 10-Q Financial Statement

#000035089422000021 Filed on April 25, 2022

Income Statement

Concept	2022 Q2	2022 Q1	2021 Q1
Revenue	$481.7M	$581.4M	$455.7M
YoY Change	1.27%	27.6%	9.87%
Cost Of Revenue	$77.56M	$78.30M	$73.20M
YoY Change	-5.15%	6.97%	5.17%
Gross Profit	$139.7M	$238.8M	$154.4M
YoY Change	-11.8%	54.73%	20.39%
Gross Profit Margin	28.99%	41.07%	33.87%
Selling, General & Admin	$263.5M	$263.4M	$227.0M
YoY Change	12.25%	16.02%	5.88%
% of Gross Profit	188.64%	110.27%	147.07%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$24.79M	$24.99M	$8.309M
YoY Change	194.33%	200.7%	11.19%
% of Gross Profit	17.75%	10.46%	5.38%
Operating Expenses	$288.2M	$288.3M	$249.6M
YoY Change	11.79%	15.52%	6.26%
Operating Profit	$115.9M	$214.8M	$132.8M
YoY Change	-14.82%	61.7%	20.51%
Interest Expense	$211.0K	$250.0K	$123.0K
YoY Change	62.31%	103.25%	-19.08%
% of Operating Profit	0.18%	0.12%	0.09%
Other Income/Expense, Net
YoY Change
Pretax Income	$144.7M	$247.4M	$167.3M
YoY Change	-15.98%	47.82%	20.22%
Income Tax	$33.42M	$57.06M	$37.87M
% Of Pretax Income	23.1%	23.07%	22.63%
Net Earnings	$111.3M	$190.3M	$129.5M
YoY Change	-16.82%	46.99%	18.52%
Net Earnings / Revenue	23.1%	32.73%	28.41%
Basic Earnings Per Share	$0.82	$1.38	$0.90
Diluted Earnings Per Share	$0.81	$1.36	$0.89
COMMON SHARES
Basic Shares Outstanding	137.3M shares	138.4M shares	143.5M shares
Diluted Shares Outstanding	137.8M shares	139.7M shares	145.3M shares

Balance Sheet

Concept	2022 Q2	2022 Q1	2021 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$802.8M	$939.1M	$815.6M
YoY Change	-0.53%	15.14%	4.79%
Cash & Equivalents	$771.7M	$907.8M	$782.6M
Short-Term Investments	$31.17M	$31.26M	$33.00M
Other Short-Term Assets	$50.52M	$46.12M	$42.81M
YoY Change	32.4%	7.72%	1.88%
Inventory
Prepaid Expenses
Receivables	$466.9M	$437.8M	$406.0M
Other Receivables	$23.56M	$7.437M	$13.10M
Total Short-Term Assets	$1.376B	$1.481B	$1.325B
YoY Change	4.89%	11.78%	7.44%
LONG-TERM ASSETS
Property, Plant & Equipment	$178.9M	$180.5M	$184.3M
YoY Change	-2.77%	-2.06%	6.35%
Goodwill	$117.4M	$117.4M	$64.49M
YoY Change	82.05%	82.1%	0.0%
Intangibles	$61.67M	$65.34M	$34.38M
YoY Change	85.82%	90.03%	27.03%
Long-Term Investments	$46.87M	$194.8M	$173.3M
YoY Change	-74.58%	12.39%	8.58%
Other Assets	$30.89M	$27.57M	$31.72M
YoY Change	-6.62%	-13.1%	-4.74%
Total Long-Term Assets	$859.4M	$891.6M	$826.1M
YoY Change	3.75%	7.94%	0.14%
TOTAL ASSETS
Total Short-Term Assets	$1.376B	$1.481B	$1.325B
Total Long-Term Assets	$859.4M	$891.6M	$826.1M
Total Assets	$2.235B	$2.373B	$2.151B
YoY Change	4.45%	10.31%	4.51%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$10.31M	$8.037M	$5.529M
YoY Change	10.91%	45.36%	-57.75%
Accrued Expenses	$218.8M	$250.5M	$199.2M
YoY Change	3.19%	25.71%	10.83%
Deferred Revenue	$13.51M	$15.42M	$1.335M
YoY Change	955.47%	1055.21%	-77.67%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$253.6M	$285.1M	$215.9M
YoY Change	8.87%	32.07%	4.03%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$30.00M	$0.00
YoY Change
Other Long-Term Liabilities	$13.97M	$22.02M	$21.10M
YoY Change	-33.61%	4.36%	-13.58%
Total Long-Term Liabilities	$13.97M	$22.02M	$21.10M
YoY Change	-33.61%	4.36%	-13.58%
TOTAL LIABILITIES
Total Short-Term Liabilities	$253.6M	$285.1M	$215.9M
Total Long-Term Liabilities	$13.97M	$22.02M	$21.10M
Total Liabilities	$312.8M	$399.5M	$321.8M
YoY Change	-6.36%	24.16%	-0.61%
SHAREHOLDERS EQUITY
Retained Earnings	$693.5M	$733.6M	$634.7M
YoY Change	15.74%	15.59%	6.22%
Common Stock	$1.274B	$1.268B	$1.210B
YoY Change	4.38%	4.78%	3.22%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.922B	$1.973B	$1.829B
YoY Change
Total Liabilities & Shareholders Equity	$2.235B	$2.373B	$2.151B
YoY Change	4.45%	10.31%	4.51%

Cashflow Statement

Concept	2022 Q2	2022 Q1	2021 Q1
OPERATING ACTIVITIES
Net Income	$111.3M	$190.3M	$129.5M
YoY Change	-16.82%	46.99%	18.52%
Depreciation, Depletion And Amortization	$24.79M	$24.99M	$8.309M
YoY Change	194.33%	200.7%	11.19%
Cash From Operating Activities	$70.19M	$260.4M	$136.6M
YoY Change	-62.74%	90.69%	37.99%
INVESTING ACTIVITIES
Capital Expenditures	-$17.76M	$9.283M	$4.218M
YoY Change	3.61%	120.08%	-79.6%
Acquisitions
YoY Change
Other Investing Activities	$7.002M	$2.000M	$11.00M
YoY Change	-184.9%	-81.82%	-833.33%
Cash From Investing Activities	-$10.76M	-$31.76M	-$30.66M
YoY Change	-57.63%	3.6%	76.67%
FINANCING ACTIVITIES
Cash Dividend Paid		$55.50M	$53.13M
YoY Change		4.47%	1.29%
Common Stock Issuance & Retirement, Net		$80.28M	$55.68M
YoY Change		44.18%	-50.27%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-185.5M	-$146.7M	-$109.5M
YoY Change	10.14%	33.91%	-33.65%
NET CHANGE
Cash From Operating Activities	70.19M	$260.4M	$136.6M
Cash From Investing Activities	-10.76M	-$31.76M	-$30.66M
Cash From Financing Activities	-185.5M	-$146.7M	-$109.5M
Net Change In Cash	-126.1M	$76.42M	-$2.044M
YoY Change	2223.79%	-3838.94%	-97.84%
FREE CASH FLOW
Cash From Operating Activities	$70.19M	$260.4M	$136.6M
Capital Expenditures	-$17.76M	$9.283M	$4.218M
Free Cash Flow	$87.95M	$251.1M	$132.4M
YoY Change	-57.21%	89.75%	69.04%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000350894
CY2022Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2022Q1	dei	Amendment Flag AmendmentFlag	false
CY2022Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022Q1	dei	Document Type DocumentType	10-Q
CY2022Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2022Q1	dei	Document Period End Date DocumentPeriodEndDate	2022-03-31
CY2022Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2022Q1	dei	Entity File Number EntityFileNumber	0-10200
CY2022Q1	dei	Entity Registrant Name EntityRegistrantName	SEI INVESTMENTS COMPANY
CY2022Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	PA
CY2022Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	23-1707341
CY2022Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	1 Freedom Valley Drive
CY2022Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Oaks
CY2022Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2022Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	19456
CY2022Q1	dei	City Area Code CityAreaCode	610
CY2022Q1	dei	Local Phone Number LocalPhoneNumber	676-1000
CY2022Q1	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
CY2022Q1	dei	Trading Symbol TradingSymbol	SEIC
CY2022Q1	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2022Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2022Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2022Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022Q1	dei	Entity Shell Company EntityShellCompany	false
CY2022Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	137265550	shares
CY2022Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	907831000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	831407000	USD
CY2022Q1	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	351000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	351000	USD
CY2022Q1	us-gaap	Due From Other Related Parties Current DueFromOtherRelatedPartiesCurrent	57584000	USD
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CY2022Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1388000	USD
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CY2022Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	145306000	shares
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	190308000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	129470000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-4558000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	1685000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1186000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	160000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-3969000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-543000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	57000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	74000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-189000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-253000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8338000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1395000	USD
CY2022Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	181970000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	130865000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	1860763000	USD
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	190308000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8338000	USD
CY2022Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	100090000	USD
CY2022Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1168000	USD
CY2022Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	18706000	USD
CY2022Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10566000	USD
CY2022Q1	us-gaap	Stockholders Equity StockholdersEquity	1973083000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1739907000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	129470000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1395000	USD
CY2021Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	66939000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1139000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	14384000	USD
CY2021Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9752000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	1829108000	USD
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	190308000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	129470000	USD
CY2022Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	70119000	USD
CY2021Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	7103000	USD
CY2022Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	260427000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	136573000	USD
CY2022Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9283000	USD
CY2021Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4218000	USD
CY2022Q1	us-gaap	Payments For Software PaymentsForSoftware	6589000	USD
CY2021Q1	us-gaap	Payments For Software PaymentsForSoftware	6360000	USD
CY2022Q1	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	49333000	USD
CY2021Q1	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	51524000	USD
CY2022Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	35397000	USD
CY2021Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	42446000	USD
CY2022Q1	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	48000	USD
CY2021Q1	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	0	USD
CY2022Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2000000	USD
CY2021Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	11000000	USD
CY2022Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-31760000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-30656000	USD
CY2022Q1	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	10000000	USD
CY2021Q1	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	USD
CY2022Q1	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	868000	USD
CY2021Q1	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	702000	USD
CY2022Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	100155000	USD
CY2021Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	71206000	USD
CY2022Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	19874000	USD
CY2021Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	15523000	USD
CY2022Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	55503000	USD
CY2021Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	53127000	USD
CY2022Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-146652000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-109512000	USD
CY2022Q1	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-5591000	USD
CY2021Q1	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1551000	USD
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	76424000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-2044000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	831758000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	787727000	USD
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	908182000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	785683000	USD
CY2022Q1	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	6589000	USD
CY2021Q1	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	6360000	USD
CY2021Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	11715000	shares
CY2022Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Net Income Per Outstanding Unit Amount AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount	60.28
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	190308000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	129470000	USD
CY2022Q1	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	137935000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	143201000	shares
CY2022Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1777000	shares
CY2021Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2105000	shares
CY2022Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	139712000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	145306000	shares
CY2022Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.38
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.90
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.36
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.89
CY2022Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	12218000	shares
CY2022Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-214000	USD
CY2021Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Net Income Per Outstanding Unit Amount AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount	57.99
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	190308000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	129470000	USD
CY2022Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8098000	USD
CY2021Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8309000	USD
CY2022Q1	us-gaap	Adjustment For Amortization AdjustmentForAmortization	16887000	USD
CY2021Q1	us-gaap	Adjustment For Amortization AdjustmentForAmortization	14352000	USD
CY2022Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	32459000	USD
CY2021Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	33350000	USD
CY2022Q1	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	32961000	USD
CY2021Q1	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	28774000	USD
CY2022Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10566000	USD
CY2021Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9752000	USD
CY2021Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1207000	USD
CY2022Q1	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	10908000	USD
CY2021Q1	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	3915000	USD
CY2022Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	-489000	USD
CY2021Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	332000	USD
CY2022Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1138000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1043000	USD
CY2022Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	706000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-507000	USD
CY2022Q1	seic	Capitalized Contract Costs Net Of Amortization CapitalizedContractCostsNetOfAmortization	-389000	USD
CY2021Q1	seic	Capitalized Contract Costs Net Of Amortization CapitalizedContractCostsNetOfAmortization	-351000	USD
CY2022Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1228000	USD
CY2021Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-992000	USD
CY2022Q1	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-1452000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	2020000	USD
CY2022Q1	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-3979000	USD
CY2021Q1	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	22016000	USD
CY2022Q1	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	2556000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	4113000	USD
CY2022Q1	us-gaap	Increase Decrease Due From Affiliates IncreaseDecreaseDueFromAffiliates	-54636000	USD
CY2021Q1	us-gaap	Increase Decrease Due From Affiliates IncreaseDecreaseDueFromAffiliates	-51266000	USD
CY2022Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2273000	USD
CY2021Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2237000	USD
CY2022Q1	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-18078000	USD
CY2021Q1	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-41717000	USD
CY2022Q1	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	5490000	USD
CY2021Q1	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	250000	USD
CY2022Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	70119000	USD
CY2021Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	7103000	USD
CY2022Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	260427000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	136573000	USD
CY2022Q1	us-gaap	Billed Contract Receivables BilledContractReceivables	101117000	USD
CY2021Q4	us-gaap	Billed Contract Receivables BilledContractReceivables	111209000	USD
CY2022Q1	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	330678000	USD
CY2021Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	315255000	USD
CY2022Q1	us-gaap	Other Receivables Gross Current OtherReceivablesGrossCurrent	7437000	USD
CY2021Q4	us-gaap	Other Receivables Gross Current OtherReceivablesGrossCurrent	16747000	USD
CY2022Q1	seic	Receivables Gross Current ReceivablesGrossCurrent	439232000	USD
CY2021Q4	seic	Receivables Gross Current ReceivablesGrossCurrent	443211000	USD
CY2022Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1388000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1602000	USD
CY2022Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	437844000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	441609000	USD
CY2022Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	597499000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	588117000	USD
CY2022Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	417041000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	409248000	USD
CY2022Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	180458000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	178869000	USD
CY2022Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8098000	USD
CY2021Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8309000	USD
CY2022Q1	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	35847000	USD
CY2021Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	36236000	USD
CY2022Q1	seic	Capitalized Contract Cost Amount Capitalized During Period CapitalizedContractCostAmountCapitalizedDuringPeriod	3519000	USD
CY2021Q1	seic	Capitalized Contract Cost Amount Capitalized During Period CapitalizedContractCostAmountCapitalizedDuringPeriod	2372000	USD
CY2022Q1	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	3908000	USD
CY2021Q1	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	2723000	USD
CY2022Q1	seic	Capitalized Contract Cost Accelerated Amortization CapitalizedContractCostAcceleratedAmortization	1784000	USD
CY2022Q1	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0	USD
CY2022Q1	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	42053000	USD
CY2021Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	107933000	USD
CY2022Q1	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	7117000	USD
CY2021Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	13951000	USD
CY2022Q1	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	44175000	USD
CY2021Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	36411000	USD
CY2022Q1	seic	Accrued Sub Advisory Distribution And Other Asset Management Fees Current AccruedSubAdvisoryDistributionAndOtherAssetManagementFeesCurrent	58087000	USD
CY2021Q4	seic	Accrued Sub Advisory Distribution And Other Asset Management Fees Current AccruedSubAdvisoryDistributionAndOtherAssetManagementFeesCurrent	58661000	USD
CY2022Q1	us-gaap	Dividends Payable Current DividendsPayableCurrent	0	USD
CY2022Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	173245000	USD
CY2021Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	55452000	USD
CY2022Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	55278000	USD
CY2021Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	0	USD
CY2022Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	43758000	USD
CY2021Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	51974000	USD
CY2022Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	250468000	USD
CY2021Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	324382000	USD
CY2022Q1	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	31258000	USD
CY2021Q4	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	28267000	USD
CY2021Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	164724000	USD
CY2022Q1	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	422635000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	422838000	USD
CY2022Q1	seic	Debt Securities Available For Sale And Equity Securities Fvni Cost DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNICost	138994000	USD
CY2022Q1	seic	Debt Securities Available For Sale And Equity Securities Fvni Accumulated Gross Unrealized Gain Before Tax DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGainBeforeTax	734000	USD
CY2022Q1	seic	Debt Securities Available For Sale And Equity Securities Fvni Accumulated Gross Unrealized Loss Before Tax DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedLossBeforeTax	5011000	USD
CY2022Q1	seic	Debt Securities Available For Sale And Equity Securities Fvni DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNI	134717000	USD
CY2021Q4	seic	Debt Securities Available For Sale And Equity Securities Fvni Cost DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNICost	128898000	USD
CY2021Q4	seic	Debt Securities Available For Sale And Equity Securities Fvni Accumulated Gross Unrealized Gain Before Tax DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGainBeforeTax	723000	USD
CY2021Q4	seic	Debt Securities Available For Sale And Equity Securities Fvni Accumulated Gross Unrealized Loss Before Tax DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedLossBeforeTax	80000	USD
CY2021Q4	seic	Debt Securities Available For Sale And Equity Securities Fvni DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNI	129541000	USD
CY2022Q1	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-3842000	USD
CY2022Q1	seic	Accumulated Other Comprehensive Income Loss Debt Securities Available For Sale Securities Adjustment Tax AccumulatedOtherComprehensiveIncomeLossDebtSecuritiesAvailableForSaleSecuritiesAdjustmentTax	-1148000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-62000	USD
CY2021Q4	seic	Accumulated Other Comprehensive Income Loss Debt Securities Available For Sale Securities Adjustment Tax AccumulatedOtherComprehensiveIncomeLossDebtSecuritiesAvailableForSaleSecuritiesAdjustmentTax	-18000	USD
CY2022Q1	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	USD
CY2022Q1	us-gaap	Equity Securities Fv Ni Realized Gain EquitySecuritiesFvNiRealizedGain	5000	USD
CY2022Q1	us-gaap	Equity Securities Fv Ni Realized Loss EquitySecuritiesFvNiRealizedLoss	579000	USD
CY2022Q1	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	31258000	USD
CY2021Q4	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	28267000	USD
CY2022Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10566000	USD
CY2021Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9752000	USD
CY2022Q1	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2096000	USD
CY2021Q1	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1854000	USD
CY2022Q1	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	8470000	USD
CY2021Q1	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	7898000	USD
CY2022Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	92057000	USD
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	8966000	USD
CY2022Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	103527000	USD
CY2022Q1	us-gaap	Share Price SharePrice	60.21
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	49.16
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	18467000	shares
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	8153000	shares
CY2022Q1	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-8527000	USD
CY2022Q1	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-189000	USD
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8338000	USD
CY2022Q1	us-gaap	Revenues Revenues	581443000	USD
CY2022Q1	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	342620000	USD
CY2022Q1	us-gaap	Gross Profit GrossProfit	238823000	USD
CY2021Q1	us-gaap	Revenues Revenues	455686000	USD
CY2021Q1	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	301333000	USD
CY2021Q1	us-gaap	Gross Profit GrossProfit	154353000	USD
CY2022Q1	us-gaap	Gross Profit GrossProfit	238823000	USD
CY2021Q1	us-gaap	Gross Profit GrossProfit	154353000	USD
CY2022Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	24024000	USD
CY2021Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	21516000	USD
CY2022Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	214799000	USD
CY2021Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	132837000	USD
CY2022Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	15872000	USD
CY2021Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	10578000	USD
CY2022Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8098000	USD
CY2021Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8309000	USD
CY2022Q1	us-gaap	Adjustment For Amortization AdjustmentForAmortization	16887000	USD
CY2021Q1	us-gaap	Adjustment For Amortization AdjustmentForAmortization	14352000	USD
CY2022Q1	seic	Gross Liability For Unrecognized Tax Benefits Exclusive Of Interest And Penalties GrossLiabilityForUnrecognizedTaxBenefitsExclusiveOfInterestAndPenalties	15768000	USD
CY2021Q4	seic	Gross Liability For Unrecognized Tax Benefits Exclusive Of Interest And Penalties GrossLiabilityForUnrecognizedTaxBenefitsExclusiveOfInterestAndPenalties	14887000	USD
CY2022Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	15251000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	14382000	USD
CY2022Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1445000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1338000	USD
CY2022Q1	seic	Gross Liability For Unrecognized Tax Benefits Exclusive Of Interest And Penalties GrossLiabilityForUnrecognizedTaxBenefitsExclusiveOfInterestAndPenalties	15768000	USD
CY2021Q4	seic	Gross Liability For Unrecognized Tax Benefits Exclusive Of Interest And Penalties GrossLiabilityForUnrecognizedTaxBenefitsExclusiveOfInterestAndPenalties	14887000	USD
CY2022Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1445000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1338000	USD
CY2022Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17213000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16225000	USD
CY2022Q1	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	4272000	USD
CY2021Q4	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	4253000	USD
CY2022Q1	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	12941000	USD
CY2021Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	11972000	USD
CY2022Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17213000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16225000	USD
CY2022Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022Q1	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.029
CY2021Q1	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.031
CY2022Q1	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.001
CY2021Q1	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.001
CY2022Q1	seic	Effective Income Tax Rate Reconciliation Tax Benefit From Stock Option Exercises Percent EffectiveIncomeTaxRateReconciliationTaxBenefitFromStockOptionExercisesPercent	-0.004
CY2021Q1	seic	Effective Income Tax Rate Reconciliation Tax Benefit From Stock Option Exercises Percent EffectiveIncomeTaxRateReconciliationTaxBenefitFromStockOptionExercisesPercent	-0.011
CY2022Q1	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003
CY2021Q1	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003
CY2022Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.231
CY2021Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.226
CY2021Q4	us-gaap	Goodwill Goodwill	117232000	USD
CY2022Q1	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	211000	USD
CY2022Q1	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-9000	USD
CY2022Q1	us-gaap	Goodwill Goodwill	117434000	USD
CY2022Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3253000	USD
CY2021Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	921000	USD
CY2022Q1	us-gaap	Revenues Revenues	581443000	USD
CY2022Q1	us-gaap	Revenues Revenues	581443000	USD
CY2021Q1	us-gaap	Revenues Revenues	455686000	USD
CY2021Q1	us-gaap	Revenues Revenues	455686000	USD

Files In Submission

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seic-20220331_cal.xml	Edgar Link	unprocessable
seic-20220331_def.xml	Edgar Link	unprocessable
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$SEIC
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2022 Q2 Form 10-Q Financial Statement

#000035089422000021 Filed on April 25, 2022

Income Statement

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$SEIC SEI INVESTMENTS CO Stock $seic

2022 Q2 Form 10-Q Financial Statement

#000035089422000021 Filed on April 25, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SEIC
SEI INVESTMENTS CO Stock $seic