$SEIC
SEI INVESTMENTS CO Stock $seic

$seic Overview Financials Valuation SEC Filings Company Website

2023 Q2 Form 10-Q Financial Statement

#000035089423000055 Filed on April 24, 2023

Income Statement

Concept	2023 Q2	2023 Q1
Revenue	$489.1M	$469.1M
YoY Change	1.53%	-19.32%
Cost Of Revenue	$78.68M	$73.46M
YoY Change	1.44%	-6.18%
Gross Profit	$410.4M	$395.7M
YoY Change	193.84%	65.67%
Gross Profit Margin	83.91%	84.34%
Selling, General & Admin	$279.4M	$275.9M
YoY Change	6.04%	4.78%
% of Gross Profit	68.08%	69.74%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$18.41M	$17.96M
YoY Change	-25.74%	-28.14%
% of Gross Profit	4.49%	4.54%
Operating Expenses	$297.8M	$293.9M
YoY Change	3.31%	1.92%
Operating Profit	$112.6M	$101.8M
YoY Change	-2.81%	-52.62%
Interest Expense	$42.64M	$38.26M
YoY Change	20107.11%	15204.0%
% of Operating Profit	37.87%	37.6%
Other Income/Expense, Net
YoY Change
Pretax Income	$155.2M	$140.0M
YoY Change	7.29%	-43.39%
Income Tax	$36.39M	$33.01M
% Of Pretax Income	23.44%	23.58%
Net Earnings	$118.9M	$107.0M
YoY Change	6.81%	-43.77%
Net Earnings / Revenue	24.3%	22.81%
Basic Earnings Per Share	$0.89	$0.80
Diluted Earnings Per Share	$0.89	$0.79
COMMON SHARES
Basic Shares Outstanding	133.3M shares	134.3M shares
Diluted Shares Outstanding	133.9M shares	135.3M shares

Balance Sheet

Concept	2023 Q2	2023 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$808.1M	$866.1M
YoY Change	0.65%	-7.77%
Cash & Equivalents	$777.1M	$834.4M
Short-Term Investments	$31.04M	$31.78M
Other Short-Term Assets	$55.91M	$51.32M
YoY Change	10.66%	11.28%
Inventory
Prepaid Expenses
Receivables	$552.9M	$514.0M
Other Receivables	$25.05M	$0.00
Total Short-Term Assets	$1.442B	$1.431B
YoY Change	4.83%	-3.35%
LONG-TERM ASSETS
Property, Plant & Equipment	$202.8M	$207.2M
YoY Change	13.33%	14.82%
Goodwill	$115.6M	$115.6M
YoY Change	-1.54%	-1.56%
Intangibles	$49.62M	$52.57M
YoY Change	-19.54%	-19.55%
Long-Term Investments	$177.9M	$185.8M
YoY Change	279.56%	-4.58%
Other Assets	$94.63M	$85.82M
YoY Change	206.33%	211.3%
Total Long-Term Assets	$883.1M	$887.1M
YoY Change	2.75%	-0.51%
TOTAL ASSETS
Total Short-Term Assets	$1.442B	$1.431B
Total Long-Term Assets	$883.1M	$887.1M
Total Assets	$2.325B	$2.318B
YoY Change	4.03%	-2.28%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$7.220M	$14.16M
YoY Change	-29.94%	76.19%
Accrued Expenses	$247.9M	$244.0M
YoY Change	13.35%	-2.58%
Deferred Revenue	$14.91M	$14.33M
YoY Change	10.38%	-7.08%
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$270.4M	$272.5M
YoY Change	6.63%	-4.43%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00
YoY Change		-100.0%
Other Long-Term Liabilities	$31.04M	$31.66M
YoY Change	122.18%	43.78%
Total Long-Term Liabilities	$31.04M	$31.66M
YoY Change	122.18%	43.78%
TOTAL LIABILITIES
Total Short-Term Liabilities	$270.4M	$272.5M
Total Long-Term Liabilities	$31.04M	$31.66M
Total Liabilities	$301.4M	$304.2M
YoY Change	-3.65%	-23.87%
SHAREHOLDERS EQUITY
Retained Earnings	$724.7M	$730.0M
YoY Change	4.49%	-0.49%
Common Stock	$1.339B	$1.329B
YoY Change	5.06%	4.83%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.024B	$2.014B
YoY Change
Total Liabilities & Shareholders Equity	$2.325B	$2.318B
YoY Change	4.03%	-2.28%

Cashflow Statement

Concept	2023 Q2	2023 Q1
OPERATING ACTIVITIES
Net Income	$118.9M	$107.0M
YoY Change	6.81%	-43.77%
Depreciation, Depletion And Amortization	$18.41M	$17.96M
YoY Change	-25.74%	-28.14%
Cash From Operating Activities	$68.09M	$114.4M
YoY Change	-2.99%	-56.09%
INVESTING ACTIVITIES
Capital Expenditures	$14.83M	$10.64M
YoY Change	-183.48%	14.62%
Acquisitions
YoY Change
Other Investing Activities	$6.004M	$3.917M
YoY Change	-14.25%	95.85%
Cash From Investing Activities	-$8.821M	-$16.99M
YoY Change	-17.99%	-46.51%
FINANCING ACTIVITIES
Cash Dividend Paid		$57.84M
YoY Change		4.2%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-120.9M	-$118.6M
YoY Change	-34.85%	-19.14%
NET CHANGE
Cash From Operating Activities	68.09M	$114.4M
Cash From Investing Activities	-8.821M	-$16.99M
Cash From Financing Activities	-120.9M	-$118.6M
Net Change In Cash	-61.61M	-$18.65M
YoY Change	-51.14%	-124.41%
FREE CASH FLOW
Cash From Operating Activities	$68.09M	$114.4M
Capital Expenditures	$14.83M	$10.64M
Free Cash Flow	$53.27M	$103.7M
YoY Change	-39.43%	-58.7%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000350894
CY2023Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2023Q1	dei	Amendment Flag AmendmentFlag	false
CY2023Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023Q1	dei	Document Type DocumentType	10-Q
CY2023Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2023Q1	dei	Document Period End Date DocumentPeriodEndDate	2023-03-31
CY2023Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2023Q1	dei	Entity File Number EntityFileNumber	0-10200
CY2023Q1	dei	Entity Registrant Name EntityRegistrantName	SEI INVESTMENTS COMPANY
CY2023Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	PA
CY2023Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	23-1707341
CY2023Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	1 Freedom Valley Drive
CY2023Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Oaks
CY2023Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2023Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	19456
CY2023Q1	dei	City Area Code CityAreaCode	610
CY2023Q1	dei	Local Phone Number LocalPhoneNumber	676-1000
CY2023Q1	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
CY2023Q1	dei	Trading Symbol TradingSymbol	SEIC
CY2023Q1	dei	Security Exchange Name SecurityExchangeName	NASDAQ
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CY2023Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2023Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023Q1	dei	Entity Shell Company EntityShellCompany	false
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CY2023Q1	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	352000	usd
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CY2023Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
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CY2023Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-35000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-189000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4389000	usd
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8338000	usd
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	111404000	usd
CY2022Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	181970000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1953824000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	107015000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4389000	usd
CY2023Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	80332000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1203000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	20161000	usd
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8074000	usd
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	2014334000	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
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	107015000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	190308000	usd
CY2023Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	7349000	usd
CY2022Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	70119000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	114364000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	260427000	usd
CY2023Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10640000	usd
CY2022Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9283000	usd
CY2023Q1	us-gaap	Payments For Software PaymentsForSoftware	9041000	usd
CY2022Q1	us-gaap	Payments For Software PaymentsForSoftware	6589000	usd
CY2023Q1	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	21777000	usd
CY2022Q1	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	49333000	usd
CY2023Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	28387000	usd
CY2022Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	35397000	usd
CY2023Q1	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	0	usd
CY2022Q1	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	48000	usd
CY2023Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3917000	usd
CY2022Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2000000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-16988000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-31760000	usd
CY2023Q1	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	usd
CY2022Q1	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	10000000	usd
CY2023Q1	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	904000	usd
CY2022Q1	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	868000	usd
CY2023Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	81214000	usd
CY2022Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	100155000	usd
CY2023Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	21364000	usd
CY2022Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	19874000	usd
CY2023Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	57835000	usd
CY2022Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	55503000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-118589000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-146652000	usd
CY2023Q1	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2561000	usd
CY2022Q1	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-5591000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-18652000	usd
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	76424000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	853359000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	831758000	usd
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	834707000	usd
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	908182000	usd
CY2023Q1	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	9041000	usd
CY2022Q1	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	6589000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	107015000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	190308000	usd
CY2023Q1	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	134020000	shares
CY2022Q1	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	137935000	shares
CY2023Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1291000	shares
CY2022Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1777000	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	135311000	shares
CY2022Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	139712000	shares
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.80
CY2022Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.38
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.79
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.36
CY2023Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	11273000	shares
CY2022Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	12218000	shares
CY2023Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Net Income Per Outstanding Unit Amount AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount	61.28
CY2022Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Net Income Per Outstanding Unit Amount AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount	60.28
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	107015000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	190308000	usd
CY2023Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8531000	usd
CY2022Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8098000	usd
CY2023Q1	us-gaap	Adjustment For Amortization AdjustmentForAmortization	9424000	usd
CY2022Q1	us-gaap	Adjustment For Amortization AdjustmentForAmortization	16887000	usd
CY2023Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	28879000	usd
CY2022Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	32459000	usd
CY2023Q1	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	29219000	usd
CY2022Q1	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	32961000	usd
CY2023Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8074000	usd
CY2022Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10566000	usd
CY2023Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-180000	usd
CY2022Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-214000	usd
CY2023Q1	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	5452000	usd
CY2022Q1	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	10908000	usd
CY2023Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	744000	usd
CY2022Q1	us-gaap	Gain Loss On Investments GainLossOnInvestments	-489000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	938000	usd
CY2022Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1138000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	783000	usd
CY2022Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	706000	usd
CY2023Q1	seic	Capitalized Contract Costs Net Of Amortization CapitalizedContractCostsNetOfAmortization	-423000	usd
CY2022Q1	seic	Capitalized Contract Costs Net Of Amortization CapitalizedContractCostsNetOfAmortization	-389000	usd
CY2023Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-123000	usd
CY2022Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1228000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-6270000	usd
CY2022Q1	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-1452000	usd
CY2023Q1	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	962000	usd
CY2022Q1	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-3979000	usd
CY2023Q1	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	2261000	usd
CY2022Q1	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	2556000	usd
CY2023Q1	us-gaap	Increase Decrease Due From Affiliates IncreaseDecreaseDueFromAffiliates	-49292000	usd
CY2022Q1	us-gaap	Increase Decrease Due From Affiliates IncreaseDecreaseDueFromAffiliates	-54636000	usd
CY2023Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	877000	usd
CY2022Q1	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2273000	usd
CY2023Q1	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-65998000	usd
CY2022Q1	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-18078000	usd
CY2023Q1	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-563000	usd
CY2022Q1	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	5490000	usd
CY2023Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	7349000	usd
CY2022Q1	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	70119000	usd
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	114364000	usd
CY2022Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	260427000	usd
CY2023Q1	us-gaap	Equity Method Investments EquityMethodInvestments	55041000	usd
CY2023Q1	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	29219000	usd
CY2022Q1	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	32961000	usd
CY2023Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	28879000	usd
CY2022Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	32459000	usd
CY2022Q1	seic	Capitalized Contract Cost Accelerated Amortization CapitalizedContractCostAcceleratedAmortization	1784000	usd
CY2023Q1	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0	usd
CY2023Q1	us-gaap	Billed Contract Receivables BilledContractReceivables	102590000	usd
CY2022Q4	us-gaap	Billed Contract Receivables BilledContractReceivables	110722000	usd
CY2023Q1	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	343823000	usd
CY2022Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	320700000	usd
CY2023Q1	us-gaap	Other Receivables Gross Current OtherReceivablesGrossCurrent	12534000	usd
CY2022Q4	us-gaap	Other Receivables Gross Current OtherReceivablesGrossCurrent	26563000	usd
CY2023Q1	seic	Receivables Gross Current ReceivablesGrossCurrent	458947000	usd
CY2022Q4	seic	Receivables Gross Current ReceivablesGrossCurrent	457985000	usd
CY2023Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	721000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	901000	usd
CY2023Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	458226000	usd
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	457084000	usd
CY2022Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	0	usd
CY2023Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	632835000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	621890000	usd
CY2023Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	449628000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	440861000	usd
CY2023Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	183207000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	181029000	usd
CY2023Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8531000	usd
CY2022Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8098000	usd
CY2023Q1	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	37505000	usd
CY2022Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	37928000	usd
CY2023Q1	seic	Capitalized Contract Cost Amount Capitalized During Period CapitalizedContractCostAmountCapitalizedDuringPeriod	1744000	usd
CY2022Q1	seic	Capitalized Contract Cost Amount Capitalized During Period CapitalizedContractCostAmountCapitalizedDuringPeriod	3519000	usd
CY2023Q1	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	2167000	usd
CY2022Q1	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	3908000	usd
CY2023Q1	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	47950000	usd
CY2022Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	100566000	usd
CY2023Q1	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	4394000	usd
CY2022Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	9852000	usd
CY2023Q1	seic	Accrued Voluntary Separation Program Current AccruedVoluntarySeparationProgramCurrent	36091000	usd
CY2022Q4	seic	Accrued Voluntary Separation Program Current AccruedVoluntarySeparationProgramCurrent	53821000	usd
CY2023Q1	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	37822000	usd
CY2022Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	37009000	usd
CY2023Q1	seic	Accrued Sub Advisory Distribution And Other Asset Management Fees Current AccruedSubAdvisoryDistributionAndOtherAssetManagementFeesCurrent	48225000	usd
CY2022Q4	seic	Accrued Sub Advisory Distribution And Other Asset Management Fees Current AccruedSubAdvisoryDistributionAndOtherAssetManagementFeesCurrent	52916000	usd
CY2023Q1	us-gaap	Dividends Payable Current DividendsPayableCurrent	0	usd
CY2022Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	58051000	usd
CY2023Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	15930000	usd
CY2023Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	43272000	usd
CY2022Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	47148000	usd
CY2023Q1	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	233684000	usd
CY2022Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	359363000	usd
CY2023Q1	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	31779000	usd
CY2023Q1	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	162585000	usd
CY2022Q4	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	32148000	usd
CY2022Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	166715000	usd
CY2023Q1	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	503582000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	450240000	usd
CY2023Q1	seic	Debt Securities Available For Sale And Equity Securities Fvni Cost DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNICost	134561000	usd
CY2023Q1	seic	Debt Securities Available For Sale And Equity Securities Fvni Accumulated Gross Unrealized Gain Before Tax DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGainBeforeTax	95000	usd
CY2023Q1	seic	Debt Securities Available For Sale And Equity Securities Fvni Accumulated Gross Unrealized Loss Before Tax DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedLossBeforeTax	10387000	usd
CY2023Q1	seic	Debt Securities Available For Sale And Equity Securities Fvni DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNI	124269000	usd
CY2022Q4	seic	Debt Securities Available For Sale And Equity Securities Fvni Cost DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNICost	140605000	usd
CY2022Q4	seic	Debt Securities Available For Sale And Equity Securities Fvni Accumulated Gross Unrealized Gain Before Tax DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGainBeforeTax	0	usd
CY2022Q4	seic	Debt Securities Available For Sale And Equity Securities Fvni Accumulated Gross Unrealized Loss Before Tax DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedLossBeforeTax	12404000	usd
CY2022Q4	seic	Debt Securities Available For Sale And Equity Securities Fvni DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNI	128201000	usd
CY2023Q1	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-7972000	usd
CY2023Q1	seic	Accumulated Other Comprehensive Income Loss Debt Securities Available For Sale Securities Adjustment Tax AccumulatedOtherComprehensiveIncomeLossDebtSecuritiesAvailableForSaleSecuritiesAdjustmentTax	-2381000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-9294000	usd
CY2022Q4	seic	Accumulated Other Comprehensive Income Loss Debt Securities Available For Sale Securities Adjustment Tax AccumulatedOtherComprehensiveIncomeLossDebtSecuritiesAvailableForSaleSecuritiesAdjustmentTax	-2777000	usd
CY2022Q1	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
CY2023Q1	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
CY2023Q1	us-gaap	Equity Securities Fv Ni Realized Gain EquitySecuritiesFvNiRealizedGain	32000	usd
CY2023Q1	us-gaap	Equity Securities Fv Ni Realized Loss EquitySecuritiesFvNiRealizedLoss	10000	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
CY2023Q1	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	31779000	usd
CY2022Q4	us-gaap	Financial Instruments Owned Us Government And Agency Obligations At Fair Value FinancialInstrumentsOwnedUSGovernmentAndAgencyObligationsAtFairValue	32148000	usd
CY2023Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8074000	usd
CY2022Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10566000	usd
CY2023Q1	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1492000	usd
CY2022Q1	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2096000	usd
CY2023Q1	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	6582000	usd
CY2022Q1	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	8470000	usd
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Incremental Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost	694000	usd
CY2023Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	111182000	usd
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	6564000	usd
CY2023Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	57295000	usd
CY2023Q1	us-gaap	Share Price SharePrice	57.55
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	52.97
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	18001000	shares
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	8599000	shares
CY2023Q1	seic	Gross Liability For Unrecognized Tax Benefits Exclusive Of Interest And Penalties GrossLiabilityForUnrecognizedTaxBenefitsExclusiveOfInterestAndPenalties	15984000	usd
CY2023Q1	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	4354000	usd
CY2023Q1	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-35000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4389000	usd
CY2023Q1	us-gaap	Revenues Revenues	469119000	usd
CY2023Q1	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	336200000	usd
CY2023Q1	us-gaap	Gross Profit GrossProfit	132919000	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
CY2022Q4	seic	Gross Liability For Unrecognized Tax Benefits Exclusive Of Interest And Penalties GrossLiabilityForUnrecognizedTaxBenefitsExclusiveOfInterestAndPenalties	15204000	usd
CY2023Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	15299000	usd
CY2023Q1	us-gaap	Gross Profit GrossProfit	132919000	usd
CY2022Q1	us-gaap	Gross Profit GrossProfit	238823000	usd
CY2023Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	31152000	usd
CY2022Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	24024000	usd
CY2023Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	101767000	usd
CY2022Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	214799000	usd
CY2023Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	19621000	usd
CY2022Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	15872000	usd
CY2023Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8531000	usd
CY2022Q1	us-gaap	Depreciation Nonproduction DepreciationNonproduction	8098000	usd
CY2023Q1	us-gaap	Adjustment For Amortization AdjustmentForAmortization	9424000	usd
CY2022Q1	us-gaap	Adjustment For Amortization AdjustmentForAmortization	16887000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	14431000	usd
CY2023Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1344000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1118000	usd
CY2023Q1	seic	Gross Liability For Unrecognized Tax Benefits Exclusive Of Interest And Penalties GrossLiabilityForUnrecognizedTaxBenefitsExclusiveOfInterestAndPenalties	15984000	usd
CY2022Q4	seic	Gross Liability For Unrecognized Tax Benefits Exclusive Of Interest And Penalties GrossLiabilityForUnrecognizedTaxBenefitsExclusiveOfInterestAndPenalties	15204000	usd
CY2023Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1344000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1118000	usd
CY2023Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17328000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16322000	usd
CY2023Q1	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	4133000	usd
CY2022Q4	us-gaap	Liability For Uncertain Tax Positions Current LiabilityForUncertainTaxPositionsCurrent	4065000	usd
CY2023Q1	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	13195000	usd
CY2022Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	12257000	usd
CY2023Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17328000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16322000	usd
CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.029
CY2022Q1	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.029
CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.001
CY2022Q1	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.001
CY2023Q1	seic	Effective Income Tax Rate Reconciliation Tax Benefit From Stock Option Exercises Percent EffectiveIncomeTaxRateReconciliationTaxBenefitFromStockOptionExercisesPercent	-0.002
CY2022Q1	seic	Effective Income Tax Rate Reconciliation Tax Benefit From Stock Option Exercises Percent EffectiveIncomeTaxRateReconciliationTaxBenefitFromStockOptionExercisesPercent	-0.004
CY2023Q1	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2022Q1	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003
CY2023Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.236
CY2022Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.231
CY2022Q4	us-gaap	Goodwill Goodwill	115599000	usd
CY2023Q1	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	3000	usd
CY2023Q1	us-gaap	Goodwill Goodwill	115602000	usd
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3055000	usd
CY2022Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3253000	usd
CY2023Q1	us-gaap	Revenues Revenues	469119000	usd
CY2023Q1	us-gaap	Revenues Revenues	469119000	usd
CY2022Q1	us-gaap	Revenues Revenues	581443000	usd
CY2022Q1	us-gaap	Revenues Revenues	581443000	usd

Files In Submission

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0000350894-23-000055-index-headers.html	Edgar Link	pending
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seic-0331202310qex311.htm	Edgar Link	pending
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seic-20230331_cal.xml	Edgar Link	unprocessable
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seic-20230331_lab.xml	Edgar Link	unprocessable
seic-20230331_def.xml	Edgar Link	unprocessable
seic-20230331_htm.xml	Edgar Link	completed

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$SEIC
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2023 Q2 Form 10-Q Financial Statement

#000035089423000055 Filed on April 24, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SEIC SEI INVESTMENTS CO Stock $seic

2023 Q2 Form 10-Q Financial Statement

#000035089423000055 Filed on April 24, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SEIC
SEI INVESTMENTS CO Stock $seic