Consolidated Statements of Operations (USD $) In Thousands, except Per Share data	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Revenues:
Net revenues	$ 334,214	[1]	$ 340,388	[1]	$ 1,059,684	[1]	$ 980,427	[1]
Non-interest expenses:
Income before income tax expense	39,023		(142,556)		93,582		(67,046)
Net income/(loss)	$ 22,304		$ (84,336)		$ 57,118		$ (39,487)
Earnings per common share:
Basic	$ 0.43		$ (1.65)		$ 1.09		$ (0.82)
Diluted	$ 0.35	[2]	$ (1.65)	[2]	$ 0.90	[2]	$ (0.82)	[2]
Weighted average number of common shares outstanding:
Basic	52,367		51,201		52,610		47,865
Diluted	63,152		61,834		63,174		55,593

[1] No individual client accounted for more than 10 percent of total net revenues for the three and nine months ended September 30, 2011 or 2010.

[2]