XML 55 R39.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Business Acquisitions Business Acquisitions (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Business Acquisitions [Abstract] |
Schedule of purchase price allocation | The purchase price allocation is as follows:
|  | Estimated Fair Value |  | Estimated Useful Life
Current assets, net of current liabilities |  | $ | 2,539 |  |  |
Property and equipment |  | 776 |  |  |
Goodwill |  | 52,990 |  |  |
Identifiable intangible assets |  |  |  |
Acquired technology |  | 13,510 |  |  | 10 years
Client relationships |  | 10,760 |  |  | 15 years
Non-competition agreements |  | 3,470 |  |  | 5 years
Trade names |  | 2,390 |  |  | 7 years
Contingent consideration |  | (4,800 | ) |  |
Total purchase price allocation |  | $ | 81,635 |  |  |

X
- Definition Business Acquisitions [Abstract] + References No definition available. + Details
Name: | seic_BusinessAcquisitionsAbstract
Namespace Prefix: | seic_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration