XML 24 R47.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Business Segment Information (Schedule Of Financial Information About Business Segments) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 335,622 | $ 322,047 | $ 998,811 | $ 943,248
Expenses | 235,748 | 218,559 | 683,819 | 644,415
Operating profit (loss) | 99,874 | 103,488 | 314,992 | 298,833
Gain on sale of subsidiary | 0 | 0 | 2,791 | 5,582
Segment profit (loss) |  |  | 317,783 | 304,415
Private Banks [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 116,280 | 110,147 | 342,826 | 329,508
Expenses | 104,217 | 100,498 | 308,200 | 299,645
Operating profit (loss) | 12,063 | 9,649 | 34,626 | 29,863
Gain on sale of subsidiary | 0 | 0 | 2,791 | 5,582
Segment profit (loss) |  |  | 37,417 | 35,445
Investment Advisors [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 76,238 | 74,469 | 228,006 | 210,939
Expenses | 45,530 | 37,796 | 125,446 | 108,052
Operating profit (loss) | 30,708 | 36,673 | 102,560 | 102,887
Gain on sale of subsidiary | 0 | 0 | 0 | 0
Segment profit (loss) |  |  | 102,560 | 102,887
Institutional Investors [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 74,515 | 72,560 | 224,043 | 212,211
Expenses | 36,923 | 35,495 | 108,662 | 104,615
Operating profit (loss) | 37,592 | 37,065 | 115,381 | 107,596
Gain on sale of subsidiary | 0 | 0 | 0 | 0
Segment profit (loss) |  |  | 115,381 | 107,596
Investment Managers [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 67,162 | 63,640 | 199,809 | 187,099
Expenses | 43,899 | 40,156 | 126,663 | 118,789
Operating profit (loss) | 23,263 | 23,484 | 73,146 | 68,310
Gain on sale of subsidiary | 0 | 0 | 0 | 0
Segment profit (loss) |  |  | 73,146 | 68,310
Investments In New Businesses [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 1,427 | 1,231 | 4,127 | 3,491
Expenses | 5,179 | 4,614 | 14,848 | 13,314
Operating profit (loss) | (3,752) | (3,383) | (10,721) | (9,823)
Gain on sale of subsidiary | $ 0 | $ 0 | 0 | 0
Segment profit (loss) |  |  | $ (10,721) | $ (9,823)

X
- Definition Total profit (loss) + References No definition available. + Details
Name: | seic_SegmentProfitLoss
Namespace Prefix: | seic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2443-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2941-110230 + Details
Name: | us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_GrossProfit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense. + References No definition available. + Details
Name: | us-gaap_OperatingCostsAndExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=seic_PrivateBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=seic_InvestmentAdvisorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=seic_InstitutionalInvestorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=seic_InvestmentManagersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=seic_InvestmentsInNewBusinessesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |