Segment Reporting (Schedule Of Information Of Total Assets On Segment Basis) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Total assets	$ 9,387,814	$ 9,008,870
Global Wealth Management [Member]
Total assets	5,736,638	5,505,076
Institutional Group [Member]
Total assets	3,428,986	3,290,573
Other [Member]
Total assets	$ 222,190	$ 213,221