Acquisitions Acquisitions (Details) (USD $)	4 Months Ended
	Apr. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Business Acquisition [Line Items]
Consideration Transferred	$ 27,000,000
Cash Paid for Acquisitions	23,000,000
Contingent Consideration Recognized in Acquisitions	4,000,000
Identifiable Intangible Assets Recognized Through Acquisitions	16,000,000
Goodwill Recognized Through Acquisitions	13,000,000	364,570,000	359,759,000	359,759,000
GTrust Financial Corporation [Member]
Business Acquisition [Line Items]
Assets Under Management at time of acquisition	631,000,000
MBM Advisors [Member]
Business Acquisition [Line Items]
Assets Under Management at time of acquisition	$ 1,300,000,000