Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions The Company, either by itself or through its wholly-owned subsidiaries, serves as the sponsor, administrator, investment advisor, distributor and shareholder servicer for SEI-sponsored investment products. These investment products are offered to clients of the Company and its subsidiaries. Fees earned by the Company for the related services are recognized pursuant to the provisions of investment advisory, fund administration, distribution, and shareholder services agreements directly with the investment products. These fees totaled $426,301, $411,206 and $470,813 in 2015, 2014 and 2013, respectively, and are reflected in Asset management, administration and distribution fees on the accompanying Consolidated Statements of Operations. The Company also serves as an introducing broker-dealer for securities transactions of SEI-sponsored investment products. The Company recognized $365, $2,332 and $620 in commissions during 2015, 2014 and 2013, respectively. These fees are reflected in Transaction-based and trade execution fees on the accompanying Consolidated Statements of Operations. Receivables from regulated investment companies (RICs) on the accompanying Consolidated Balance Sheets primarily represent fees receivable for distribution, investment advisory, and administration services to various RICs sponsored by SEI.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.