Acquisitions (Identifiable Intangible Assets) (Details) - USD ($) $ in Thousands		9 Months Ended
	Jan. 02, 2015	Sep. 30, 2015
Acquired Indefinite-lived Intangible Assets [Line Items]
Useful Life		9 years 9 months 28 days
Trade names
Acquired Indefinite-lived Intangible Assets [Line Items]
Useful Life		7 years 10 months 24 days
Securities Service Network, Inc. (SSN)
Acquired Indefinite-lived Intangible Assets [Line Items]
Identifiable intangible assets	$ 30,901
Securities Service Network, Inc. (SSN) \| Relationships with financial advisors
Acquired Indefinite-lived Intangible Assets [Line Items]
Identifiable intangible assets	$ 26,654
Useful Life	20 years
Securities Service Network, Inc. (SSN) \| Technology
Acquired Indefinite-lived Intangible Assets [Line Items]
Identifiable intangible assets	$ 2,080
Useful Life	12 years 6 months
Securities Service Network, Inc. (SSN) \| Trade names
Acquired Indefinite-lived Intangible Assets [Line Items]
Identifiable intangible assets	$ 1,756
Useful Life	9 years
Securities Service Network, Inc. (SSN) \| Non-compete agreements
Acquired Indefinite-lived Intangible Assets [Line Items]
Identifiable intangible assets	$ 411
Useful Life	3 years