Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Commissions
U.S. high-grade	$ 26,830	$ 20,249	$ 53,208	$ 40,025
Eurobond	4,606	4,669	9,223	10,161
Other	7,640	4,542	14,430	8,581
Total commissions	39,076	29,460	76,861	58,767
Technology products and services	3,984	3,251	7,092	6,415
Information and user access fees	1,719	1,722	3,408	3,356
Investment income	310	315	609	606
Other	702	578	1,430	1,066
Total revenues	45,791	35,326	89,400	70,210
Expenses
Employee compensation and benefits	15,104	14,189	31,372	28,122
Depreciation and amortization	1,627	1,622	3,189	3,238
Technology and communications	2,724	2,353	5,224	4,770
Professional and consulting fees	2,665	1,990	5,537	4,128
Occupancy	708	707	1,474	1,645
Marketing and advertising	1,248	759	2,222	1,387
General and administrative	1,810	1,850	2,811	3,979
Total expenses	25,886	23,470	51,829	47,269
Income before income taxes	19,905	11,856	37,571	22,941
Provision for income taxes	7,968	4,687	14,854	9,071
Net income	$ 11,937	$ 7,169	$ 22,717	$ 13,870
Net income per common share
Basic	$ 0.32	$ 0.19	$ 0.62	$ 0.37
Diluted	$ 0.30	$ 0.18	$ 0.58	$ 0.35
Cash dividends declared per common share	$ 0.09	$ 0.07	$ 0.18	$ 0.14
Weighted average common shares
Basic	36,762	33,733	36,635	33,679
Diluted	39,490	39,514	39,396	39,409