Segment Reporting (Schedule Of Operating Information, Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended	9 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Jun. 30, 2013 item	Sep. 30, 2013
Number of business segments					3
Number of businesses within reportable segment					2
Net revenues	$ 546,746	[1]	$ 438,604	[1]
Income before income tax expense	78,128		23,658
Net revenues accounted for by individual client, maximum percentage						10.00%
Global Wealth Management [Member]
Net revenues	297,183	[1]	266,957	[1]
Income before income tax expense	79,676		69,499
Institutional Group [Member]
Net revenues	249,977	[1]	173,300	[1]
Income before income tax expense	45,622		28,230
Other [Member]
Net revenues	(414)	[1]	(1,653)	[1]
Income before income tax expense	$ (47,170)		$ (74,071)

[1] No individual client accounted for more than 10 percent of total net revenues for the three months ended March 31, 2014 or 2013.