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Business Combinations - Schedule of Goodwill Allocation by Segment (Details) - Baker Street Advisors, LLC and myCIO Wealth Partners, L.P.	Dec. 31, 2016
Institutional
Business Acquisition
Goodwill allocation to business segments (percent)	14.40%
Mutual Fund
Business Acquisition
Goodwill allocation to business segments (percent)	0.00%
High Net Worth
Business Acquisition
Goodwill allocation to business segments (percent)	85.60%

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