Segment Reporting (Schedule Of Information Of Total Assets On Segment Basis) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total assets	$ 9,518,151	$ 9,008,870
Global Wealth Management [Member]
Segment Reporting Information [Line Items]
Total assets	5,816,284	5,505,076
Institutional Group [Member]
Segment Reporting Information [Line Items]
Total assets	3,476,592	3,290,573
Other [Member]
Segment Reporting Information [Line Items]
Total assets	$ 225,275	$ 213,221